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[GNUnet-SVN] r8880 - gnunet/src/util


From: gnunet
Subject: [GNUnet-SVN] r8880 - gnunet/src/util
Date: Sat, 29 Aug 2009 13:37:55 -0600

Author: grothoff
Date: 2009-08-29 13:37:54 -0600 (Sat, 29 Aug 2009)
New Revision: 8880

Added:
   gnunet/src/util/connection.c
   gnunet/src/util/test_connection.c
   gnunet/src/util/test_connection_addressing.c
   gnunet/src/util/test_connection_receive_cancel.c
   gnunet/src/util/test_connection_timeout.c
   gnunet/src/util/test_connection_timeout_no_connect.c
   gnunet/src/util/test_connection_transmit_cancel.c
Removed:
   gnunet/src/util/network.c
   gnunet/src/util/test_network.c
   gnunet/src/util/test_network_addressing.c
   gnunet/src/util/test_network_receive_cancel.c
   gnunet/src/util/test_network_timeout.c
   gnunet/src/util/test_network_timeout_no_connect.c
   gnunet/src/util/test_network_transmit_cancel.c
Modified:
   gnunet/src/util/Makefile.am
Log:
renames

Modified: gnunet/src/util/Makefile.am
===================================================================
--- gnunet/src/util/Makefile.am 2009-08-29 19:28:38 UTC (rev 8879)
+++ gnunet/src/util/Makefile.am 2009-08-29 19:37:54 UTC (rev 8880)
@@ -22,6 +22,7 @@
   common_gettext.c \
   common_logging.c \
   configuration.c \
+  connection.c \
   container_bloomfilter.c \
   container_meta_data.c \
   container_multihashmap.c \
@@ -37,7 +38,6 @@
   getopt.c \
   getopt_helpers.c \
   network.c \
-  network_socket.c \
   os_installation.c \
   os_load.c \
   os_network.c \
@@ -93,12 +93,12 @@
  test_crypto_rsa \
  test_disk \
  test_getopt \
- test_network \
- test_network_addressing \
- test_network_receive_cancel \
- test_network_timeout \
- test_network_timeout_no_connect \
- test_network_transmit_cancel \
+ test_connection \
+ test_connection_addressing \
+ test_connection_receive_cancel \
+ test_connection_timeout \
+ test_connection_timeout_no_connect \
+ test_connection_transmit_cancel \
  test_os_load \
  test_os_network \
  test_os_priority \
@@ -207,34 +207,34 @@
 test_getopt_LDADD = \
  $(top_builddir)/src/util/libgnunetutil.la  
 
-test_network_SOURCES = \
- test_network.c
-test_network_LDADD = \
+test_connection_SOURCES = \
+ test_connection.c
+test_connection_LDADD = \
  $(top_builddir)/src/util/libgnunetutil.la  
 
-test_network_addressing_SOURCES = \
- test_network_addressing.c
-test_network_addressing_LDADD = \
+test_connection_addressing_SOURCES = \
+ test_connection_addressing.c
+test_connection_addressing_LDADD = \
  $(top_builddir)/src/util/libgnunetutil.la  
 
-test_network_receive_cancel_SOURCES = \
- test_network_receive_cancel.c
-test_network_receive_cancel_LDADD = \
+test_connection_receive_cancel_SOURCES = \
+ test_connection_receive_cancel.c
+test_connection_receive_cancel_LDADD = \
  $(top_builddir)/src/util/libgnunetutil.la  
 
-test_network_timeout_SOURCES = \
- test_network_timeout.c
-test_network_timeout_LDADD = \
+test_connection_timeout_SOURCES = \
+ test_connection_timeout.c
+test_connection_timeout_LDADD = \
  $(top_builddir)/src/util/libgnunetutil.la  
 
-test_network_timeout_no_connect_SOURCES = \
- test_network_timeout_no_connect.c
-test_network_timeout_no_connect_LDADD = \
+test_connection_timeout_no_connect_SOURCES = \
+ test_connection_timeout_no_connect.c
+test_connection_timeout_no_connect_LDADD = \
  $(top_builddir)/src/util/libgnunetutil.la  
 
-test_network_transmit_cancel_SOURCES = \
- test_network_transmit_cancel.c
-test_network_transmit_cancel_LDADD = \
+test_connection_transmit_cancel_SOURCES = \
+ test_connection_transmit_cancel.c
+test_connection_transmit_cancel_LDADD = \
  $(top_builddir)/src/util/libgnunetutil.la  
 
 test_os_load_SOURCES = \

Copied: gnunet/src/util/connection.c (from rev 8877, gnunet/src/util/network.c)
===================================================================
--- gnunet/src/util/connection.c                                (rev 0)
+++ gnunet/src/util/connection.c        2009-08-29 19:37:54 UTC (rev 8880)
@@ -0,0 +1,1248 @@
+/*
+     This file is part of GNUnet.
+     (C) 2009 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 2, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file util/connection.c
+ * @brief  TCP connection management
+ * @author Christian Grothoff
+ *
+ * This code is rather complex.  Only modify it if you
+ * 1) Have a NEW testcase showing that the new code
+ *    is needed and correct
+ * 2) All EXISTING testcases pass with the new code
+ * These rules should apply in general, but for this
+ * module they are VERY, VERY important.
+ *
+ * TODO:
+ * - can we merge receive_ready and receive_again?
+ * - can we integrate the nth.timeout_task with the write_task's timeout?
+ */
+
+#include "platform.h"
+#include "gnunet_common.h"
+#include "gnunet_connection_lib.h"
+#include "gnunet_scheduler_lib.h"
+
+#define DEBUG_CONNECTION GNUNET_NO
+
+/**
+ * List of address families to give as hints to
+ * getaddrinfo, in reverse order of  preference.
+ */
+static int address_families[] = 
+  { AF_INET, AF_INET6, AF_UNSPEC };
+
+struct GNUNET_CONNECTION_TransmitHandle
+{
+
+  /**
+   * Function to call if the send buffer has notify_size
+   * bytes available.
+   */
+  GNUNET_CONNECTION_TransmitReadyNotify notify_ready;
+
+  /**
+   * Closure for notify_ready.
+   */
+  void *notify_ready_cls;
+
+  /**
+   * Our socket handle.
+   */
+  struct GNUNET_CONNECTION_Handle *sh;
+
+  /**
+   * Timeout for receiving (in absolute time).
+   */
+  struct GNUNET_TIME_Absolute transmit_timeout;
+
+  /**
+   * Task called on timeout.
+   */
+  GNUNET_SCHEDULER_TaskIdentifier timeout_task;
+
+  /**
+   * At what number of bytes available in the
+   * write buffer should the notify method be called?
+   */
+  size_t notify_size;
+
+};
+
+/**
+ * @brief handle for a network socket
+ */
+struct GNUNET_CONNECTION_Handle
+{
+
+  /**
+   * Scheduler that was used for the connect task.
+   */
+  struct GNUNET_SCHEDULER_Handle *sched;
+
+  /**
+   * Address information for connect (may be NULL).
+   */
+  struct addrinfo *ai;
+
+  /**
+   * Index for the next struct addrinfo for connect attempts (may be NULL)
+   */
+  struct addrinfo *ai_pos;
+
+  /**
+   * Network address of the other end-point, may be NULL.
+   */
+  struct sockaddr *addr;
+
+  /**
+   * Pointer to the hostname if socket was
+   * created using DNS lookup, otherwise NULL.
+   */
+  char *hostname;
+
+  /**
+   * Pointer to our write buffer.
+   */
+  char *write_buffer;
+
+  /**
+   * Size of our write buffer.
+   */
+  size_t write_buffer_size;
+
+  /**
+   * Current write-offset in write buffer (where
+   * would we write next).
+   */
+  size_t write_buffer_off;
+
+  /**
+   * Current read-offset in write buffer (how many
+   * bytes have already been send).
+   */
+  size_t write_buffer_pos;
+
+  /**
+   * Length of addr.
+   */
+  socklen_t addrlen;
+
+  /**
+   * Offset in our address family list
+   * that we used last.
+   */
+  int af_fam_offset;
+
+  /**
+   * Connect task that we may need to wait for.
+   */
+  GNUNET_SCHEDULER_TaskIdentifier connect_task;
+
+  /**
+   * Read task that we may need to wait for.
+   */
+  GNUNET_SCHEDULER_TaskIdentifier read_task;
+
+  /**
+   * Write task that we may need to wait for.
+   */
+  GNUNET_SCHEDULER_TaskIdentifier write_task;
+
+  /**
+   * The handle we return for GNUNET_CONNECTION_notify_transmit_ready.
+   */
+  struct GNUNET_CONNECTION_TransmitHandle nth;
+
+  /**
+   * Underlying OS's socket, set to NULL after fatal errors.
+   */
+  struct GNUNET_NETWORK_Descriptor *sock;
+
+  /**
+   * Port to connect to.
+   */
+  uint16_t port;
+
+  /**
+   * Function to call on data received, NULL
+   * if no receive is pending.
+   */
+  GNUNET_CONNECTION_Receiver receiver;
+
+  /**
+   * Closure for receiver.
+   */
+  void *receiver_cls;
+
+  /**
+   * Timeout for receiving (in absolute time).
+   */
+  struct GNUNET_TIME_Absolute receive_timeout;
+
+  /**
+   * Maximum number of bytes to read
+   * (for receiving).
+   */
+  size_t max;
+
+};
+
+
+/**
+ * Create a socket handle by boxing an existing OS socket.  The OS
+ * socket should henceforth be no longer used directly.
+ * GNUNET_socket_destroy will close it.
+ *
+ * @param sched scheduler to use
+ * @param osSocket existing socket to box
+ * @param maxbuf maximum write buffer size for the socket (use
+ *        0 for sockets that need no write buffers, such as listen sockets)
+ * @return the boxed socket handle
+ */
+struct GNUNET_CONNECTION_Handle *
+GNUNET_CONNECTION_create_from_existing (struct GNUNET_SCHEDULER_Handle
+                                            *sched, struct 
GNUNET_NETWORK_Descriptor *osSocket,
+                                            size_t maxbuf)
+{
+  struct GNUNET_CONNECTION_Handle *ret;
+  ret = GNUNET_malloc (sizeof (struct GNUNET_CONNECTION_Handle) + maxbuf);
+  ret->write_buffer = (char *) &ret[1];
+  ret->write_buffer_size = maxbuf;
+  ret->sock = osSocket;
+  ret->sched = sched;
+  return ret;
+}
+
+
+/**
+ * Create a socket handle by accepting on a listen socket.  This
+ * function may block if the listen socket has no connection ready.
+ *
+ * @param sched scheduler to use
+ * @param access function to use to check if access is allowed
+ * @param access_cls closure for access
+ * @param lsock listen socket
+ * @param maxbuf maximum write buffer size for the socket (use
+ *        0 for sockets that need no write buffers, such as listen sockets)
+ * @return the socket handle, NULL on error
+ */
+struct GNUNET_CONNECTION_Handle *
+GNUNET_CONNECTION_create_from_accept (struct GNUNET_SCHEDULER_Handle
+                                          *sched,
+                                          GNUNET_CONNECTION_AccessCheck access,
+                                          void *access_cls, struct 
GNUNET_NETWORK_Descriptor *lsock,
+                                          size_t maxbuf)
+{
+  struct GNUNET_CONNECTION_Handle *ret;
+  char addr[32];
+  socklen_t addrlen;
+  struct GNUNET_NETWORK_Descriptor *sock;
+  int aret;
+  struct sockaddr_in *v4;
+  struct sockaddr_in6 *v6;
+  struct sockaddr *sa;
+  void *uaddr;
+
+  addrlen = sizeof (addr);
+  sock = GNUNET_NETWORK_socket_accept (lsock, (struct sockaddr *) &addr, 
&addrlen);
+  if (NULL == sock)
+    {
+      GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "accept");
+      return NULL;
+    }
+#ifndef MINGW
+  if (GNUNET_OK != GNUNET_NETWORK_socket_set_inheritable (sock))
+    GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+                         "fcntl");
+#endif
+  if (addrlen > sizeof (addr))
+    {
+      GNUNET_break (0);
+      GNUNET_break (0 == GNUNET_NETWORK_socket_close (sock));
+      return NULL;
+    }
+
+  sa = (struct sockaddr *) addr;
+  v6 = (struct sockaddr_in6 *) addr;
+  if ((sa->sa_family == AF_INET6) && (IN6_IS_ADDR_V4MAPPED (&v6->sin6_addr)))
+    {
+      /* convert to V4 address */
+      v4 = GNUNET_malloc (sizeof (struct sockaddr_in));
+      memset (v4, 0, sizeof (struct sockaddr_in));
+      v4->sin_family = AF_INET;
+      memcpy (&v4->sin_addr,
+              &((char *) &v6->sin6_addr)[sizeof (struct in6_addr) -
+                                         sizeof (struct in_addr)],
+              sizeof (struct in_addr));
+      v4->sin_port = v6->sin6_port;
+      uaddr = v4;
+      addrlen = sizeof (struct sockaddr_in);
+    }
+  else
+    {
+      uaddr = GNUNET_malloc (addrlen);
+      memcpy (uaddr, addr, addrlen);
+    }
+
+  if ((access != NULL) &&
+      (GNUNET_YES != (aret = access (access_cls, uaddr, addrlen))))
+    {
+      if (aret == GNUNET_NO)
+       GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+                   _("Access denied to `%s'\n"),
+                   GNUNET_a2s(uaddr, addrlen));
+      GNUNET_break (0 == GNUNET_NETWORK_socket_shutdown (sock, SHUT_RDWR));
+      GNUNET_break (0 == GNUNET_NETWORK_socket_close (sock));
+      GNUNET_free (uaddr);
+      return NULL;
+    }
+#if DEBUG_CONNECTION
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+             _("Accepting connection from `%s'\n"),
+             GNUNET_a2s(uaddr, addrlen));
+#endif
+  ret = GNUNET_malloc (sizeof (struct GNUNET_CONNECTION_Handle) + maxbuf);
+  ret->write_buffer = (char *) &ret[1];
+  ret->write_buffer_size = maxbuf;
+  ret->addr = uaddr;
+  ret->addrlen = addrlen;
+  ret->sock = sock;
+  ret->sched = sched;
+  return ret;
+}
+
+/**
+ * Obtain the network address of the other party.
+ *
+ * @param sock the client to get the address for
+ * @param addr where to store the address
+ * @param addrlen where to store the length of the address
+ * @return GNUNET_OK on success
+ */
+int
+GNUNET_CONNECTION_get_address (struct GNUNET_CONNECTION_Handle *sock,
+                                   void **addr, size_t * addrlen)
+{
+  if ((sock->addr == NULL) || (sock->addrlen == 0))
+    return GNUNET_NO;
+  *addr = GNUNET_malloc (sock->addrlen);
+  memcpy (*addr, sock->addr, sock->addrlen);
+  *addrlen = sock->addrlen;
+  return GNUNET_OK;
+}
+
+/**
+ * Perform a DNS lookup for the hostname associated
+ * with the current socket, iterating over the address
+ * families as specified in the "address_families" array.
+ */
+static void
+try_lookup (struct GNUNET_CONNECTION_Handle *sock)
+{
+  struct addrinfo hints;
+  int ec;
+
+  while ( (sock->ai_pos == NULL) &&
+         (sock->af_fam_offset > 0) )
+    {
+      if (sock->ai != NULL)
+       freeaddrinfo (sock->ai);
+      memset (&hints, 0, sizeof (hints));
+      hints.ai_family = address_families[--sock->af_fam_offset];
+      hints.ai_socktype = SOCK_STREAM;
+      if (0 != (ec = getaddrinfo (sock->hostname, NULL, &hints, &sock->ai)))
+       {
+         GNUNET_log (GNUNET_ERROR_TYPE_INFO | GNUNET_ERROR_TYPE_BULK,
+                     "`%s' failed for hostname `%s': %s\n",
+                     "getaddrinfo", sock->hostname, gai_strerror (ec));
+         sock->ai = NULL;
+       }
+      sock->ai_pos = sock->ai;
+    }
+}
+
+
+/**
+ * Initiate asynchronous TCP connect request.
+ *
+ * @param sock what socket to connect
+ * @return GNUNET_SYSERR error (no more addresses to try)
+ */
+static int
+try_connect (struct GNUNET_CONNECTION_Handle *sock)
+{
+  struct GNUNET_NETWORK_Descriptor *s;
+
+  if (sock->addr != NULL)
+    {
+      GNUNET_free (sock->addr);
+      sock->addr = NULL;
+      sock->addrlen = 0;
+    }
+  while (1)
+    {
+      if (sock->ai_pos == NULL)
+       try_lookup (sock);
+      if (sock->ai_pos == NULL)
+        {
+          /* no more addresses to try, fatal! */
+          return GNUNET_SYSERR;
+        }
+      switch (sock->ai_pos->ai_family)
+        {
+        case AF_INET:
+          ((struct sockaddr_in *) sock->ai_pos->ai_addr)->sin_port =
+            htons (sock->port);
+          break;
+        case AF_INET6:
+          ((struct sockaddr_in6 *) sock->ai_pos->ai_addr)->sin6_port =
+            htons (sock->port);
+          break;
+        default:
+          sock->ai_pos = sock->ai_pos->ai_next;
+          continue;
+        }
+      s = GNUNET_NETWORK_socket_socket (sock->ai_pos->ai_family, SOCK_STREAM, 
0);
+      if (s == NULL)
+        {
+          /* maybe unsupported address family, try next */
+          GNUNET_log_strerror (GNUNET_ERROR_TYPE_INFO, "socket");
+          sock->ai_pos = sock->ai_pos->ai_next;
+          continue;
+        }
+#ifndef MINGW
+      if (GNUNET_OK != GNUNET_NETWORK_socket_set_inheritable (s))
+        GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+                             "GNUNET_NETWORK_socket_set_inheritable");
+#endif
+      if (GNUNET_SYSERR == GNUNET_NETWORK_socket_set_blocking (s, GNUNET_NO))
+        {
+          /* we'll treat this one as fatal */
+          GNUNET_break (0 == GNUNET_NETWORK_socket_close (s));
+          return GNUNET_SYSERR;
+        }
+#if DEBUG_CONNECTION
+      GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+                 _("Trying to connect to `%s'\n"),
+                 GNUNET_a2s(sock->ai_pos->ai_addr,
+                            sock->ai_pos->ai_addrlen));
+#endif
+      if ((0 != GNUNET_NETWORK_socket_connect (s,
+                         sock->ai_pos->ai_addr,
+                         sock->ai_pos->ai_addrlen)) && (errno != EINPROGRESS))
+        {
+          /* maybe refused / unsupported address, try next */
+          GNUNET_log_strerror (GNUNET_ERROR_TYPE_INFO, "connect");
+          GNUNET_break (0 == GNUNET_NETWORK_socket_close (s));
+          sock->ai_pos = sock->ai_pos->ai_next;
+          continue;
+        }
+      break;
+    }
+  /* got one! copy address information! */
+  sock->addrlen = sock->ai_pos->ai_addrlen;
+  sock->addr = GNUNET_malloc (sock->addrlen);
+  memcpy (sock->addr, sock->ai_pos->ai_addr, sock->addrlen);
+  sock->ai_pos = sock->ai_pos->ai_next;
+  sock->sock = s;
+  return GNUNET_OK;
+}
+
+
+/**
+ * Scheduler let us know that we're either ready to
+ * write on the socket OR connect timed out.  Do the
+ * right thing.
+ */
+static void
+connect_continuation (void *cls,
+                      const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  struct GNUNET_CONNECTION_Handle *sock = cls;
+  unsigned int len;
+  int error;
+
+  /* nobody needs to wait for us anymore... */
+  sock->connect_task = GNUNET_SCHEDULER_NO_TASK;
+  /* Note: write-ready does NOT mean connect succeeded,
+     we need to use getsockopt to be sure */
+  len = sizeof (error);
+  errno = 0;
+  error = 0;
+  if ((0 == (tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY)) ||
+      (0 != GNUNET_NETWORK_socket_getsockopt (sock->sock, SOL_SOCKET, 
SO_ERROR, &error, &len)) ||
+      (error != 0) || (errno != 0))
+    {
+#if DEBUG_CONNECTION
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                 "Failed to establish TCP connection to `%s'\n",
+                 GNUNET_a2s(sock->addr, sock->addrlen));
+#endif
+      /* connect failed / timed out */
+      GNUNET_break (0 == GNUNET_NETWORK_socket_close (sock->sock));
+      sock->sock = NULL;
+      if (GNUNET_SYSERR == try_connect (sock))
+        {
+          /* failed for good */
+#if DEBUG_CONNECTION
+         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                     "Failed to establish TCP connection, no further addresses 
to try.\n");
+#endif
+         /* connect failed / timed out */
+          GNUNET_break (sock->ai_pos == NULL);
+          freeaddrinfo (sock->ai);
+          sock->ai = NULL;
+          return;
+        }
+      sock->connect_task = GNUNET_SCHEDULER_add_write_net (tc->sched, 
GNUNET_NO,    /* abort on shutdown */
+                                                       
GNUNET_SCHEDULER_PRIORITY_KEEP,
+                                                       
GNUNET_SCHEDULER_NO_TASK,
+                                                       
GNUNET_CONNECTION_CONNECT_RETRY_TIMEOUT,
+                                                       sock->sock,
+                                                       &connect_continuation,
+                                                       sock);
+      return;
+    }
+  /* connect succeeded! clean up "ai" */
+#if DEBUG_CONNECTION
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+             "Connection to `%s' succeeded!\n",
+             GNUNET_a2s(sock->addr, sock->addrlen));
+#endif
+  freeaddrinfo (sock->ai);
+  sock->ai_pos = NULL;
+  sock->ai = NULL;
+}
+
+
+/**
+ * Create a socket handle by (asynchronously) connecting to a host.
+ * This function returns immediately, even if the connection has not
+ * yet been established.  This function only creates TCP connections.
+ *
+ * @param sched scheduler to use
+ * @param hostname name of the host to connect to
+ * @param port port to connect to
+ * @param maxbuf maximum write buffer size for the socket (use
+ *        0 for sockets that need no write buffers, such as listen sockets)
+ * @return the socket handle
+ */
+struct GNUNET_CONNECTION_Handle *
+GNUNET_CONNECTION_create_from_connect (struct GNUNET_SCHEDULER_Handle
+                                           *sched, const char *hostname,
+                                           uint16_t port, size_t maxbuf)
+{
+  struct GNUNET_CONNECTION_Handle *ret;
+
+  ret = GNUNET_malloc (sizeof (struct GNUNET_CONNECTION_Handle) + maxbuf);
+  ret->sock = NULL;
+  ret->sched = sched;
+  ret->write_buffer = (char *) &ret[1];
+  ret->write_buffer_size = maxbuf;
+  ret->port = port;
+  ret->af_fam_offset = sizeof (address_families) / sizeof(address_families[0]);
+  ret->hostname = GNUNET_strdup (hostname);
+  if (GNUNET_SYSERR == try_connect (ret))
+    {
+      if (NULL != ret->ai)
+       freeaddrinfo (ret->ai);
+      GNUNET_free (ret->hostname);
+      GNUNET_free (ret);
+      return NULL;
+    }
+  ret->connect_task = GNUNET_SCHEDULER_add_write_net (sched, GNUNET_NO,     /* 
abort on shutdown */
+                                                  
GNUNET_SCHEDULER_PRIORITY_KEEP,
+                                                  GNUNET_SCHEDULER_NO_TASK,
+                                                  
GNUNET_CONNECTION_CONNECT_RETRY_TIMEOUT,
+                                                  ret->sock,
+                                                  &connect_continuation, ret);
+  return ret;
+
+}
+
+
+/**
+ * Create a socket handle by (asynchronously) connecting to a host.
+ * This function returns immediately, even if the connection has not
+ * yet been established.  This function only creates TCP connections.
+ *
+ * @param sched scheduler to use
+ * @param af_family address family to use
+ * @param serv_addr server address
+ * @param addrlen length of server address
+ * @param maxbuf maximum write buffer size for the socket (use
+ *        0 for sockets that need no write buffers, such as listen sockets)
+ * @return the socket handle
+ */
+struct GNUNET_CONNECTION_Handle *
+GNUNET_CONNECTION_create_from_sockaddr (struct GNUNET_SCHEDULER_Handle
+                                            *sched, int af_family,
+                                            const struct sockaddr *serv_addr,
+                                            socklen_t addrlen, size_t maxbuf)
+{
+  struct GNUNET_NETWORK_Descriptor *s;
+  struct GNUNET_CONNECTION_Handle *ret;
+
+  s = GNUNET_NETWORK_socket_socket (af_family, SOCK_STREAM, 0);
+  if (s == NULL)
+    {
+      GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING |
+                           GNUNET_ERROR_TYPE_BULK, "socket");
+      return NULL;
+    }
+#ifndef MINGW
+#if 0
+  // FIXME NILS
+  if (0 != fcntl (s, F_SETFD, fcntl (s, F_GETFD) | FD_CLOEXEC))
+    GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+                         "fcntl");
+#endif
+#endif
+  if (GNUNET_SYSERR == GNUNET_NETWORK_socket_set_blocking (s, GNUNET_NO))
+    {
+      /* we'll treat this one as fatal */
+      GNUNET_break (0 == GNUNET_NETWORK_socket_close (s));
+      return NULL;
+    }
+#if DEBUG_CONNECTION
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+             _("Trying to connect to `%s'\n"),
+             GNUNET_a2s(serv_addr, addrlen));
+#endif
+  if ((0 != GNUNET_NETWORK_socket_connect (s, serv_addr, addrlen)) && (errno 
!= EINPROGRESS))
+    {
+      /* maybe refused / unsupported address, try next */
+      GNUNET_log_strerror (GNUNET_ERROR_TYPE_INFO, "connect");
+      GNUNET_break (0 == GNUNET_NETWORK_socket_close (s));
+      return NULL;
+    }
+  ret = GNUNET_CONNECTION_create_from_existing (sched, s, maxbuf);
+  ret->addr = GNUNET_malloc (addrlen);
+  memcpy (ret->addr, serv_addr, addrlen);
+  ret->addrlen = addrlen;
+  return ret;
+}
+
+
+/**
+ * Check if socket is valid (no fatal errors have happened so far).
+ * Note that a socket that is still trying to connect is considered
+ * valid.
+ *
+ * @param sock socket to check
+ * @return GNUNET_YES if valid, GNUNET_NO otherwise
+ */
+int
+GNUNET_CONNECTION_check (struct GNUNET_CONNECTION_Handle *sock)
+{
+  if (sock->ai != NULL)
+    return GNUNET_YES;          /* still trying to connect */
+  return (sock->sock == NULL) ? GNUNET_NO : GNUNET_YES;
+}
+
+
+/**
+ * Scheduler let us know that the connect task is finished (or was
+ * cancelled due to shutdown).  Now really clean up.
+ */
+static void
+destroy_continuation (void *cls,
+                      const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  struct GNUNET_CONNECTION_Handle *sock = cls;
+  GNUNET_CONNECTION_TransmitReadyNotify notify;
+
+  if (sock->write_task != GNUNET_SCHEDULER_NO_TASK)
+    {
+      GNUNET_SCHEDULER_add_after (sock->sched,
+                                  GNUNET_YES,
+                                  GNUNET_SCHEDULER_PRIORITY_KEEP,
+                                  sock->write_task,
+                                  &destroy_continuation, sock);
+      return;
+    }
+  if (sock->sock != NULL)
+    {
+#if DEBUG_CONNECTION
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Shutting down socket.\n");
+#endif
+      GNUNET_NETWORK_socket_shutdown (sock->sock, SHUT_RDWR);
+    }
+  if (sock->read_task != GNUNET_SCHEDULER_NO_TASK)
+    {
+      GNUNET_SCHEDULER_add_after (sock->sched,
+                                  GNUNET_YES,
+                                  GNUNET_SCHEDULER_PRIORITY_KEEP,
+                                  sock->read_task,
+                                  &destroy_continuation, sock);
+      return;
+    }
+  if (NULL != (notify = sock->nth.notify_ready))
+    {
+      sock->nth.notify_ready = NULL;
+      notify (sock->nth.notify_ready_cls, 0, NULL);
+      if (sock->nth.timeout_task != GNUNET_SCHEDULER_NO_TASK)
+        {
+          GNUNET_SCHEDULER_cancel (sock->sched, sock->nth.timeout_task);
+          sock->nth.timeout_task = GNUNET_SCHEDULER_NO_TASK;
+        }
+    }
+  if (sock->sock != NULL)
+    GNUNET_break (0 == GNUNET_NETWORK_socket_close (sock->sock));
+  GNUNET_free_non_null (sock->addr);
+  if (sock->ai != NULL)
+    freeaddrinfo (sock->ai);      
+  GNUNET_free_non_null (sock->hostname);
+  GNUNET_free (sock);
+}
+
+
+/**
+ * Close the socket and free associated resources. Pending
+ * transmissions are simply dropped.  A pending receive call will be
+ * called with an error code of "EPIPE".
+ *
+ * @param sock socket to destroy
+ */
+void
+GNUNET_CONNECTION_destroy (struct GNUNET_CONNECTION_Handle *sock)
+{
+  if (sock->write_buffer_off == 0)
+    sock->ai_pos = NULL;        /* if we're still trying to connect and have
+                                   no message pending, stop trying! */
+  GNUNET_assert (sock->sched != NULL);
+  GNUNET_SCHEDULER_add_after (sock->sched,
+                              GNUNET_YES,
+                              GNUNET_SCHEDULER_PRIORITY_KEEP,
+                              sock->connect_task,
+                              &destroy_continuation, sock);
+}
+
+/**
+ * Tell the receiver callback that a timeout was reached.
+ */
+static void
+signal_timeout (struct GNUNET_CONNECTION_Handle *sh)
+{
+  GNUNET_CONNECTION_Receiver receiver;
+
+#if DEBUG_CONNECTION
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Network signals time out to receiver!\n");
+#endif
+  GNUNET_assert (NULL != (receiver = sh->receiver));
+  sh->receiver = NULL;
+  receiver (sh->receiver_cls, NULL, 0, NULL, 0, 0);
+}
+
+
+/**
+ * Tell the receiver callback that we had an IO error.
+ */
+static void
+signal_error (struct GNUNET_CONNECTION_Handle *sh, int errcode)
+{
+  GNUNET_CONNECTION_Receiver receiver;
+  GNUNET_assert (NULL != (receiver = sh->receiver));
+  sh->receiver = NULL;
+  receiver (sh->receiver_cls, NULL, 0, sh->addr, sh->addrlen, errcode);
+}
+
+
+/**
+ * This function is called once we either timeout
+ * or have data ready to read.
+ */
+static void
+receive_ready (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  struct GNUNET_CONNECTION_Handle *sh = cls;
+  struct GNUNET_TIME_Absolute now;
+  char buffer[sh->max];
+  ssize_t ret;
+  GNUNET_CONNECTION_Receiver receiver;
+
+  sh->read_task = GNUNET_SCHEDULER_NO_TASK;
+  now = GNUNET_TIME_absolute_get ();
+  if ((now.value > sh->receive_timeout.value) ||
+      (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT)) ||
+      (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN)))
+    {
+#if DEBUG_CONNECTION
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                  "Receive encounters error: time out...\n");
+#endif
+      signal_timeout (sh);
+      return;
+    }
+  if (sh->sock == NULL)
+    {
+      /* connect failed for good */
+#if DEBUG_CONNECTION
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                  "Receive encounters error, socket closed...\n");
+#endif
+      signal_error (sh, ECONNREFUSED);
+      return;
+    }
+  GNUNET_assert (GNUNET_NETWORK_fdset_isset (tc->read_ready, sh->sock));
+RETRY:
+  ret = GNUNET_NETWORK_socket_recv (sh->sock, buffer, sh->max,
+#ifndef MINGW
+      // FIXME MINGW
+      MSG_DONTWAIT
+#else
+      0
+#endif
+      );
+  if (ret == -1)
+    {
+      if (errno == EINTR)
+        goto RETRY;
+#if DEBUG_CONNECTION
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                  "Error receiving: %s\n", STRERROR (errno));
+#endif
+      signal_error (sh, errno);
+      return;
+    }
+#if DEBUG_CONNECTION
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "receive_ready read %u/%u bytes from `%s'!\n",
+             (unsigned int) ret,
+             sh->max,
+             GNUNET_a2s(sh->addr, sh->addrlen));
+#endif
+  GNUNET_assert (NULL != (receiver = sh->receiver));
+  sh->receiver = NULL;
+  receiver (sh->receiver_cls, buffer, ret, sh->addr, sh->addrlen, 0);
+}
+
+
+/**
+ * This function is called after establishing a connection either has
+ * succeeded or timed out.  Note that it is possible that the attempt
+ * timed out and that we're immediately retrying.  If we are retrying,
+ * we need to wait again (or timeout); if we succeeded, we need to
+ * wait for data (or timeout).
+ */
+static void
+receive_again (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  struct GNUNET_CONNECTION_Handle *sh = cls;
+  struct GNUNET_TIME_Absolute now;
+
+  sh->read_task = GNUNET_SCHEDULER_NO_TASK;
+  if ((sh->sock == NULL) &&
+      (sh->connect_task == GNUNET_SCHEDULER_NO_TASK))
+    {
+      /* not connected and no longer trying */
+#if DEBUG_CONNECTION
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                  "Receive encounters error, socket closed...\n");
+#endif
+      signal_error (sh, ECONNREFUSED);
+      return;
+    }
+  now = GNUNET_TIME_absolute_get ();
+  if ((now.value > sh->receive_timeout.value) ||
+      (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN)))
+    {
+#if DEBUG_CONNECTION
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                  "Receive encounters error: time out...\n");
+#endif
+      signal_timeout (sh);
+      return;
+    }
+  if (sh->connect_task != GNUNET_SCHEDULER_NO_TASK)
+    {
+      /* connect was retried */
+      sh->read_task = GNUNET_SCHEDULER_add_after (tc->sched,
+                                                  GNUNET_YES,
+                                                  
GNUNET_SCHEDULER_PRIORITY_KEEP,
+                                                  sh->connect_task,
+                                                  &receive_again, sh);
+      return;
+    }
+  /* connect succeeded, wait for data! */
+  sh->read_task = GNUNET_SCHEDULER_add_read_net (tc->sched,
+                                            GNUNET_YES,
+                                            GNUNET_SCHEDULER_PRIORITY_KEEP,
+                                            sh->connect_task,
+                                            GNUNET_TIME_absolute_get_remaining
+                                            (sh->receive_timeout),
+                                            sh->sock, &receive_ready,
+                                            sh);
+}
+
+
+/**
+ * Receive data from the given socket.  Note that this function will
+ * call "receiver" asynchronously using the scheduler.  It will
+ * "immediately" return.  Note that there MUST only be one active
+ * receive call per socket at any given point in time (so do not
+ * call receive again until the receiver callback has been invoked).
+ *
+ * @param sched scheduler to use
+ * @param sock socket handle
+ * @param max maximum number of bytes to read
+ * @param timeout maximum amount of time to wait (use -1 for "forever")
+ * @param receiver function to call with received data
+ * @param receiver_cls closure for receiver
+ * @return scheduler task ID used for receiving, GNUNET_SCHEDULER_NO_TASK on 
error
+ */
+GNUNET_SCHEDULER_TaskIdentifier
+GNUNET_CONNECTION_receive (struct GNUNET_CONNECTION_Handle *sock,
+                        size_t max,
+                        struct GNUNET_TIME_Relative timeout,
+                        GNUNET_CONNECTION_Receiver receiver, void 
*receiver_cls)
+{
+  struct GNUNET_SCHEDULER_TaskContext tc;
+
+  GNUNET_assert ((sock->read_task == GNUNET_SCHEDULER_NO_TASK) &&
+                 (sock->receiver == NULL));
+  sock->receiver = receiver;
+  sock->receiver_cls = receiver_cls;
+  sock->receive_timeout = GNUNET_TIME_relative_to_absolute (timeout);
+  sock->max = max;
+  memset (&tc, 0, sizeof (tc));
+  tc.sched = sock->sched;
+  tc.reason = GNUNET_SCHEDULER_REASON_PREREQ_DONE;
+  receive_again (sock, &tc);
+  return sock->read_task;
+}
+
+
+/**
+ * Cancel receive job on the given socket.  Note that the
+ * receiver callback must not have been called yet in order
+ * for the cancellation to be valid.
+ *
+ * @param sock socket handle
+ * @param task task identifier returned from the receive call
+ * @return closure of the original receiver callback
+ */
+void *
+GNUNET_CONNECTION_receive_cancel (struct GNUNET_CONNECTION_Handle *sock,
+                               GNUNET_SCHEDULER_TaskIdentifier task)
+{
+  GNUNET_assert (sock->read_task == task);
+  GNUNET_assert (sock == GNUNET_SCHEDULER_cancel (sock->sched, task));
+  sock->read_task = GNUNET_SCHEDULER_NO_TASK;
+  sock->receiver = NULL;
+  return sock->receiver_cls;
+}
+
+
+/**
+ * Try to call the transmit notify method (check if we do
+ * have enough space available first)!
+ *
+ * @param sock socket for which we should do this processing
+ * @return GNUNET_YES if we were able to call notify
+ */
+static int
+process_notify (struct GNUNET_CONNECTION_Handle *sock)
+{
+  size_t used;
+  size_t avail;
+  size_t size;
+  GNUNET_CONNECTION_TransmitReadyNotify notify;
+
+  GNUNET_assert (sock->write_task == GNUNET_SCHEDULER_NO_TASK);
+  if (NULL == (notify = sock->nth.notify_ready))
+    return GNUNET_NO;
+  used = sock->write_buffer_off - sock->write_buffer_pos;
+  avail = sock->write_buffer_size - used;
+  size = sock->nth.notify_size;
+  if (sock->nth.notify_size > avail)
+    return GNUNET_NO;
+  sock->nth.notify_ready = NULL;
+  if (sock->nth.timeout_task != GNUNET_SCHEDULER_NO_TASK)
+    {
+      GNUNET_SCHEDULER_cancel (sock->sched, sock->nth.timeout_task);
+      sock->nth.timeout_task = GNUNET_SCHEDULER_NO_TASK;
+    }
+  if (sock->write_buffer_size - sock->write_buffer_off < size)
+    {
+      /* need to compact */
+      memmove (sock->write_buffer,
+               &sock->write_buffer[sock->write_buffer_pos], used);
+      sock->write_buffer_off -= sock->write_buffer_pos;
+      sock->write_buffer_pos = 0;
+    }
+  GNUNET_assert (sock->write_buffer_size - sock->write_buffer_off >= size);
+  size = notify (sock->nth.notify_ready_cls,
+                 sock->write_buffer_size - sock->write_buffer_off,
+                 &sock->write_buffer[sock->write_buffer_off]);
+  sock->write_buffer_off += size;
+  return GNUNET_YES;
+}
+
+
+/**
+ * Task invoked by the scheduler when a call to transmit
+ * is timing out (we never got enough buffer space to call
+ * the callback function before the specified timeout
+ * expired).
+ *
+ * This task notifies the client about the timeout.
+ */
+static void
+transmit_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  struct GNUNET_CONNECTION_Handle *sock = cls;
+  GNUNET_CONNECTION_TransmitReadyNotify notify;
+
+#if DEBUG_CONNECTION
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Transmit fails, time out reached.\n");
+#endif
+  notify = sock->nth.notify_ready;
+  sock->nth.notify_ready = NULL;
+  notify (sock->nth.notify_ready_cls, 0, NULL);
+}
+
+
+static void
+transmit_error (struct GNUNET_CONNECTION_Handle *sock)
+{
+  if (sock->nth.notify_ready == NULL)
+    return;                     /* nobody to tell about it */
+  if (sock->nth.timeout_task != GNUNET_SCHEDULER_NO_TASK)
+    {
+      GNUNET_SCHEDULER_cancel (sock->sched, sock->nth.timeout_task);
+      sock->nth.timeout_task = GNUNET_SCHEDULER_NO_TASK;
+    }
+  transmit_timeout (sock, NULL);
+}
+
+
+/**
+ * See if we are now connected.  If not, wait longer for
+ * connect to succeed.  If connected, we should be able
+ * to write now as well, unless we timed out.
+ */
+static void
+transmit_ready (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  struct GNUNET_CONNECTION_Handle *sock = cls;
+  ssize_t ret;
+  size_t have;
+
+  GNUNET_assert (sock->write_task != GNUNET_SCHEDULER_NO_TASK);
+  sock->write_task = GNUNET_SCHEDULER_NO_TASK;
+  if (sock->connect_task != GNUNET_SCHEDULER_NO_TASK)
+    {
+      /* still waiting for connect */
+      GNUNET_assert (sock->write_task ==
+                     GNUNET_SCHEDULER_NO_TASK);
+      sock->write_task =
+        GNUNET_SCHEDULER_add_delayed (tc->sched, GNUNET_NO,
+                                      GNUNET_SCHEDULER_PRIORITY_KEEP,
+                                      sock->connect_task,
+                                      GNUNET_TIME_UNIT_ZERO, &transmit_ready,
+                                      sock);
+      return;
+    }
+  if ( (sock->sock == NULL) ||
+       ( (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT)) &&
+        (0 == (tc->reason & GNUNET_SCHEDULER_REASON_PREREQ_DONE)) &&
+        (!GNUNET_NETWORK_fdset_isset (tc->write_ready, sock->sock)))  )
+    {
+#if DEBUG_CONNECTION
+      GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+                  _("Could not satisfy pending transmission request, socket 
closed or connect failed.\n"));
+#endif
+      if (NULL != sock->sock)
+       {
+         GNUNET_NETWORK_socket_shutdown (sock->sock, SHUT_RDWR);
+         GNUNET_break (0 == GNUNET_NETWORK_socket_close (sock->sock));
+         sock->sock = NULL;
+       }
+      transmit_error (sock);
+      return;                   /* connect failed for good, we're finished */
+    }
+ if ((tc->write_ready == NULL) || (!GNUNET_NETWORK_fdset_isset 
(tc->write_ready, sock->sock)))
+    {
+      /* special circumstances (in particular,
+        PREREQ_DONE after connect): not yet ready to write,
+        but no "fatal" error either.  Hence retry.  */
+      goto SCHEDULE_WRITE;
+    }
+  GNUNET_assert (sock->write_buffer_off >= sock->write_buffer_pos);
+  process_notify (sock);
+  have = sock->write_buffer_off - sock->write_buffer_pos;
+  if (have == 0)
+    {
+      /* no data ready for writing, terminate write loop */
+      return;
+    }
+RETRY:
+  ret = GNUNET_NETWORK_socket_send (sock->sock,
+              &sock->write_buffer[sock->write_buffer_pos],
+              have,
+#ifndef MINGW
+              // FIXME NILS
+              MSG_DONTWAIT | MSG_NOSIGNAL
+#else
+              0
+#endif
+  );
+  if (ret == -1)
+    {
+      if (errno == EINTR)
+        goto RETRY;
+#if DEBUG_CONNECTION
+      GNUNET_log_strerror (GNUNET_ERROR_TYPE_DEBUG, "send");
+#endif
+      GNUNET_NETWORK_socket_shutdown (sock->sock, SHUT_RDWR);
+      GNUNET_break (0 == GNUNET_NETWORK_socket_close (sock->sock));
+      sock->sock = NULL;
+      transmit_error (sock);
+      return;
+    }
+#if DEBUG_CONNECTION
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "transmit_ready transmitted %u/%u bytes to `%s'\n",
+             (unsigned int) ret,
+             have,
+             GNUNET_a2s(sock->addr, sock->addrlen));
+#endif
+  sock->write_buffer_pos += ret;
+  if (sock->write_buffer_pos == sock->write_buffer_off)
+    {
+      /* transmitted all pending data */
+      sock->write_buffer_pos = 0;
+      sock->write_buffer_off = 0;
+    }
+  if ((sock->write_buffer_off == 0) && (NULL == sock->nth.notify_ready))
+    return;                     /* all data sent! */
+  /* not done writing, schedule more */
+SCHEDULE_WRITE:
+  if (sock->write_task == GNUNET_SCHEDULER_NO_TASK)
+    sock->write_task =
+      GNUNET_SCHEDULER_add_write_net (tc->sched,
+                                  GNUNET_NO,
+                                  GNUNET_SCHEDULER_PRIORITY_KEEP,
+                                  GNUNET_SCHEDULER_NO_TASK,
+                                  GNUNET_TIME_absolute_get_remaining 
(sock->nth.transmit_timeout),
+                                  sock->sock, &transmit_ready, sock);
+}
+
+
+/**
+ * Ask the socket to call us once the specified number of bytes
+ * are free in the transmission buffer.  May call the notify
+ * method immediately if enough space is available.
+ *
+ * @param sock socket
+ * @param size number of bytes to send
+ * @param timeout after how long should we give up (and call
+ *        notify with buf NULL and size 0)?
+ * @param notify function to call
+ * @param notify_cls closure for notify
+ * @return non-NULL if the notify callback was queued,
+ *         NULL if we are already going to notify someone else (busy)
+ */
+struct GNUNET_CONNECTION_TransmitHandle *
+GNUNET_CONNECTION_notify_transmit_ready (struct GNUNET_CONNECTION_Handle
+                                      *sock, size_t size,
+                                      struct GNUNET_TIME_Relative timeout,
+                                      GNUNET_CONNECTION_TransmitReadyNotify
+                                      notify, void *notify_cls)
+{
+  if (sock->nth.notify_ready != NULL)
+    return NULL;
+  GNUNET_assert (notify != NULL);
+  GNUNET_assert (sock->write_buffer_size >= size);
+
+  if ((sock->sock == NULL) &&
+      (sock->connect_task == GNUNET_SCHEDULER_NO_TASK))
+    {
+#if DEBUG_CONNECTION
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                  "Transmission request of size %u fails, connection 
failed.\n",
+                 size);
+#endif
+      notify (notify_cls, 0, NULL);
+      return &sock->nth;
+    }
+  GNUNET_assert (sock->write_buffer_off <= sock->write_buffer_size);
+  GNUNET_assert (sock->write_buffer_pos <= sock->write_buffer_size);
+  GNUNET_assert (sock->write_buffer_pos <= sock->write_buffer_off);
+  sock->nth.notify_ready = notify;
+  sock->nth.notify_ready_cls = notify_cls;
+  sock->nth.sh = sock;
+  sock->nth.notify_size = size;
+  sock->nth.transmit_timeout = GNUNET_TIME_relative_to_absolute (timeout);
+  sock->nth.timeout_task = GNUNET_SCHEDULER_add_delayed (sock->sched,
+                                                         GNUNET_NO,
+                                                         
GNUNET_SCHEDULER_PRIORITY_KEEP,
+                                                         
GNUNET_SCHEDULER_NO_TASK,
+                                                         timeout,
+                                                         &transmit_timeout,
+                                                         sock);
+  if (sock->write_task == GNUNET_SCHEDULER_NO_TASK)
+    {
+      if (sock->connect_task == GNUNET_SCHEDULER_NO_TASK)
+       sock->write_task = GNUNET_SCHEDULER_add_write_net (sock->sched,
+                                                      GNUNET_NO,
+                                                      
GNUNET_SCHEDULER_PRIORITY_KEEP,
+                                                      GNUNET_SCHEDULER_NO_TASK,
+                                                      
GNUNET_TIME_absolute_get_remaining (sock->nth.transmit_timeout),
+                                                      sock->sock,
+                                                      &transmit_ready, sock);
+      else
+       sock->write_task = GNUNET_SCHEDULER_add_delayed (sock->sched,
+                                                        GNUNET_NO,
+                                                        
GNUNET_SCHEDULER_PRIORITY_KEEP,
+                                                        sock->connect_task,
+                                                        GNUNET_TIME_UNIT_ZERO,
+                                                        &transmit_ready, sock);
+    }
+  return &sock->nth;
+}
+
+
+/**
+ * Cancel the specified transmission-ready
+ * notification.
+ */
+void
+GNUNET_CONNECTION_notify_transmit_ready_cancel (struct
+                                             GNUNET_CONNECTION_TransmitHandle 
*h)
+{
+  GNUNET_assert (h->notify_ready != NULL);
+  GNUNET_SCHEDULER_cancel (h->sh->sched, h->timeout_task);
+  h->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+  h->notify_ready = NULL;
+}
+
+
+#if 0                           /* keep Emacsens' auto-indent happy */
+{
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+/* end of connection.c */

Deleted: gnunet/src/util/network.c
===================================================================
--- gnunet/src/util/network.c   2009-08-29 19:28:38 UTC (rev 8879)
+++ gnunet/src/util/network.c   2009-08-29 19:37:54 UTC (rev 8880)
@@ -1,1246 +0,0 @@
-/*
-     This file is part of GNUnet.
-     (C) 2009 Christian Grothoff (and other contributing authors)
-
-     GNUnet is free software; you can redistribute it and/or modify
-     it under the terms of the GNU General Public License as published
-     by the Free Software Foundation; either version 2, or (at your
-     option) any later version.
-
-     GNUnet is distributed in the hope that it will be useful, but
-     WITHOUT ANY WARRANTY; without even the implied warranty of
-     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-     General Public License for more details.
-
-     You should have received a copy of the GNU General Public License
-     along with GNUnet; see the file COPYING.  If not, write to the
-     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-     Boston, MA 02111-1307, USA.
-*/
-
-/**
- * @file util/network/network.c
- * @brief basic, low-level TCP networking interface
- * @author Christian Grothoff
- *
- * This code is rather complex.  Only modify it if you
- * 1) Have a NEW testcase showing that the new code
- *    is needed and correct
- * 2) All EXISTING testcases pass with the new code
- * These rules should apply in general, but for this
- * module they are VERY, VERY important.
- *
- * TODO:
- * - can we merge receive_ready and receive_again?
- * - can we integrate the nth.timeout_task with the write_task's timeout?
- */
-
-#include "platform.h"
-#include "gnunet_common.h"
-#include "gnunet_connection_lib.h"
-#include "gnunet_scheduler_lib.h"
-
-#define DEBUG_NETWORK GNUNET_NO
-
-/**
- * List of address families to give as hints to
- * getaddrinfo, in reverse order of  preference.
- */
-static int address_families[] = 
-  { AF_INET, AF_INET6, AF_UNSPEC };
-
-struct GNUNET_CONNECTION_TransmitHandle
-{
-
-  /**
-   * Function to call if the send buffer has notify_size
-   * bytes available.
-   */
-  GNUNET_CONNECTION_TransmitReadyNotify notify_ready;
-
-  /**
-   * Closure for notify_ready.
-   */
-  void *notify_ready_cls;
-
-  /**
-   * Our socket handle.
-   */
-  struct GNUNET_CONNECTION_Handle *sh;
-
-  /**
-   * Timeout for receiving (in absolute time).
-   */
-  struct GNUNET_TIME_Absolute transmit_timeout;
-
-  /**
-   * Task called on timeout.
-   */
-  GNUNET_SCHEDULER_TaskIdentifier timeout_task;
-
-  /**
-   * At what number of bytes available in the
-   * write buffer should the notify method be called?
-   */
-  size_t notify_size;
-
-};
-
-/**
- * @brief handle for a network socket
- */
-struct GNUNET_CONNECTION_Handle
-{
-
-  /**
-   * Scheduler that was used for the connect task.
-   */
-  struct GNUNET_SCHEDULER_Handle *sched;
-
-  /**
-   * Address information for connect (may be NULL).
-   */
-  struct addrinfo *ai;
-
-  /**
-   * Index for the next struct addrinfo for connect attempts (may be NULL)
-   */
-  struct addrinfo *ai_pos;
-
-  /**
-   * Network address of the other end-point, may be NULL.
-   */
-  struct sockaddr *addr;
-
-  /**
-   * Pointer to the hostname if socket was
-   * created using DNS lookup, otherwise NULL.
-   */
-  char *hostname;
-
-  /**
-   * Pointer to our write buffer.
-   */
-  char *write_buffer;
-
-  /**
-   * Size of our write buffer.
-   */
-  size_t write_buffer_size;
-
-  /**
-   * Current write-offset in write buffer (where
-   * would we write next).
-   */
-  size_t write_buffer_off;
-
-  /**
-   * Current read-offset in write buffer (how many
-   * bytes have already been send).
-   */
-  size_t write_buffer_pos;
-
-  /**
-   * Length of addr.
-   */
-  socklen_t addrlen;
-
-  /**
-   * Offset in our address family list
-   * that we used last.
-   */
-  int af_fam_offset;
-
-  /**
-   * Connect task that we may need to wait for.
-   */
-  GNUNET_SCHEDULER_TaskIdentifier connect_task;
-
-  /**
-   * Read task that we may need to wait for.
-   */
-  GNUNET_SCHEDULER_TaskIdentifier read_task;
-
-  /**
-   * Write task that we may need to wait for.
-   */
-  GNUNET_SCHEDULER_TaskIdentifier write_task;
-
-  /**
-   * The handle we return for GNUNET_CONNECTION_notify_transmit_ready.
-   */
-  struct GNUNET_CONNECTION_TransmitHandle nth;
-
-  /**
-   * Underlying OS's socket, set to NULL after fatal errors.
-   */
-  struct GNUNET_NETWORK_Descriptor *sock;
-
-  /**
-   * Port to connect to.
-   */
-  uint16_t port;
-
-  /**
-   * Function to call on data received, NULL
-   * if no receive is pending.
-   */
-  GNUNET_CONNECTION_Receiver receiver;
-
-  /**
-   * Closure for receiver.
-   */
-  void *receiver_cls;
-
-  /**
-   * Timeout for receiving (in absolute time).
-   */
-  struct GNUNET_TIME_Absolute receive_timeout;
-
-  /**
-   * Maximum number of bytes to read
-   * (for receiving).
-   */
-  size_t max;
-
-};
-
-
-/**
- * Create a socket handle by boxing an existing OS socket.  The OS
- * socket should henceforth be no longer used directly.
- * GNUNET_socket_destroy will close it.
- *
- * @param sched scheduler to use
- * @param osSocket existing socket to box
- * @param maxbuf maximum write buffer size for the socket (use
- *        0 for sockets that need no write buffers, such as listen sockets)
- * @return the boxed socket handle
- */
-struct GNUNET_CONNECTION_Handle *
-GNUNET_CONNECTION_create_from_existing (struct GNUNET_SCHEDULER_Handle
-                                            *sched, struct 
GNUNET_NETWORK_Descriptor *osSocket,
-                                            size_t maxbuf)
-{
-  struct GNUNET_CONNECTION_Handle *ret;
-  ret = GNUNET_malloc (sizeof (struct GNUNET_CONNECTION_Handle) + maxbuf);
-  ret->write_buffer = (char *) &ret[1];
-  ret->write_buffer_size = maxbuf;
-  ret->sock = osSocket;
-  ret->sched = sched;
-  return ret;
-}
-
-
-/**
- * Create a socket handle by accepting on a listen socket.  This
- * function may block if the listen socket has no connection ready.
- *
- * @param sched scheduler to use
- * @param access function to use to check if access is allowed
- * @param access_cls closure for access
- * @param lsock listen socket
- * @param maxbuf maximum write buffer size for the socket (use
- *        0 for sockets that need no write buffers, such as listen sockets)
- * @return the socket handle, NULL on error
- */
-struct GNUNET_CONNECTION_Handle *
-GNUNET_CONNECTION_create_from_accept (struct GNUNET_SCHEDULER_Handle
-                                          *sched,
-                                          GNUNET_CONNECTION_AccessCheck access,
-                                          void *access_cls, struct 
GNUNET_NETWORK_Descriptor *lsock,
-                                          size_t maxbuf)
-{
-  struct GNUNET_CONNECTION_Handle *ret;
-  char addr[32];
-  socklen_t addrlen;
-  struct GNUNET_NETWORK_Descriptor *sock;
-  int aret;
-  struct sockaddr_in *v4;
-  struct sockaddr_in6 *v6;
-  struct sockaddr *sa;
-  void *uaddr;
-
-  addrlen = sizeof (addr);
-  sock = GNUNET_NETWORK_socket_accept (lsock, (struct sockaddr *) &addr, 
&addrlen);
-  if (NULL == sock)
-    {
-      GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "accept");
-      return NULL;
-    }
-#ifndef MINGW
-  if (GNUNET_OK != GNUNET_NETWORK_socket_set_inheritable (sock))
-    GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
-                         "fcntl");
-#endif
-  if (addrlen > sizeof (addr))
-    {
-      GNUNET_break (0);
-      GNUNET_break (0 == GNUNET_NETWORK_socket_close (sock));
-      return NULL;
-    }
-
-  sa = (struct sockaddr *) addr;
-  v6 = (struct sockaddr_in6 *) addr;
-  if ((sa->sa_family == AF_INET6) && (IN6_IS_ADDR_V4MAPPED (&v6->sin6_addr)))
-    {
-      /* convert to V4 address */
-      v4 = GNUNET_malloc (sizeof (struct sockaddr_in));
-      memset (v4, 0, sizeof (struct sockaddr_in));
-      v4->sin_family = AF_INET;
-      memcpy (&v4->sin_addr,
-              &((char *) &v6->sin6_addr)[sizeof (struct in6_addr) -
-                                         sizeof (struct in_addr)],
-              sizeof (struct in_addr));
-      v4->sin_port = v6->sin6_port;
-      uaddr = v4;
-      addrlen = sizeof (struct sockaddr_in);
-    }
-  else
-    {
-      uaddr = GNUNET_malloc (addrlen);
-      memcpy (uaddr, addr, addrlen);
-    }
-
-  if ((access != NULL) &&
-      (GNUNET_YES != (aret = access (access_cls, uaddr, addrlen))))
-    {
-      if (aret == GNUNET_NO)
-       GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                   _("Access denied to `%s'\n"),
-                   GNUNET_a2s(uaddr, addrlen));
-      GNUNET_break (0 == GNUNET_NETWORK_socket_shutdown (sock, SHUT_RDWR));
-      GNUNET_break (0 == GNUNET_NETWORK_socket_close (sock));
-      GNUNET_free (uaddr);
-      return NULL;
-    }
-#if DEBUG_NETWORK
-  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-             _("Accepting connection from `%s'\n"),
-             GNUNET_a2s(uaddr, addrlen));
-#endif
-  ret = GNUNET_malloc (sizeof (struct GNUNET_CONNECTION_Handle) + maxbuf);
-  ret->write_buffer = (char *) &ret[1];
-  ret->write_buffer_size = maxbuf;
-  ret->addr = uaddr;
-  ret->addrlen = addrlen;
-  ret->sock = sock;
-  ret->sched = sched;
-  return ret;
-}
-
-/**
- * Obtain the network address of the other party.
- *
- * @param sock the client to get the address for
- * @param addr where to store the address
- * @param addrlen where to store the length of the address
- * @return GNUNET_OK on success
- */
-int
-GNUNET_CONNECTION_get_address (struct GNUNET_CONNECTION_Handle *sock,
-                                   void **addr, size_t * addrlen)
-{
-  if ((sock->addr == NULL) || (sock->addrlen == 0))
-    return GNUNET_NO;
-  *addr = GNUNET_malloc (sock->addrlen);
-  memcpy (*addr, sock->addr, sock->addrlen);
-  *addrlen = sock->addrlen;
-  return GNUNET_OK;
-}
-
-/**
- * Perform a DNS lookup for the hostname associated
- * with the current socket, iterating over the address
- * families as specified in the "address_families" array.
- */
-static void
-try_lookup (struct GNUNET_CONNECTION_Handle *sock)
-{
-  struct addrinfo hints;
-  int ec;
-
-  while ( (sock->ai_pos == NULL) &&
-         (sock->af_fam_offset > 0) )
-    {
-      if (sock->ai != NULL)
-       freeaddrinfo (sock->ai);
-      memset (&hints, 0, sizeof (hints));
-      hints.ai_family = address_families[--sock->af_fam_offset];
-      hints.ai_socktype = SOCK_STREAM;
-      if (0 != (ec = getaddrinfo (sock->hostname, NULL, &hints, &sock->ai)))
-       {
-         GNUNET_log (GNUNET_ERROR_TYPE_INFO | GNUNET_ERROR_TYPE_BULK,
-                     "`%s' failed for hostname `%s': %s\n",
-                     "getaddrinfo", sock->hostname, gai_strerror (ec));
-         sock->ai = NULL;
-       }
-      sock->ai_pos = sock->ai;
-    }
-}
-
-
-/**
- * Initiate asynchronous TCP connect request.
- *
- * @param sock what socket to connect
- * @return GNUNET_SYSERR error (no more addresses to try)
- */
-static int
-try_connect (struct GNUNET_CONNECTION_Handle *sock)
-{
-  struct GNUNET_NETWORK_Descriptor *s;
-
-  if (sock->addr != NULL)
-    {
-      GNUNET_free (sock->addr);
-      sock->addr = NULL;
-      sock->addrlen = 0;
-    }
-  while (1)
-    {
-      if (sock->ai_pos == NULL)
-       try_lookup (sock);
-      if (sock->ai_pos == NULL)
-        {
-          /* no more addresses to try, fatal! */
-          return GNUNET_SYSERR;
-        }
-      switch (sock->ai_pos->ai_family)
-        {
-        case AF_INET:
-          ((struct sockaddr_in *) sock->ai_pos->ai_addr)->sin_port =
-            htons (sock->port);
-          break;
-        case AF_INET6:
-          ((struct sockaddr_in6 *) sock->ai_pos->ai_addr)->sin6_port =
-            htons (sock->port);
-          break;
-        default:
-          sock->ai_pos = sock->ai_pos->ai_next;
-          continue;
-        }
-      s = GNUNET_NETWORK_socket_socket (sock->ai_pos->ai_family, SOCK_STREAM, 
0);
-      if (s == NULL)
-        {
-          /* maybe unsupported address family, try next */
-          GNUNET_log_strerror (GNUNET_ERROR_TYPE_INFO, "socket");
-          sock->ai_pos = sock->ai_pos->ai_next;
-          continue;
-        }
-#ifndef MINGW
-      if (GNUNET_OK != GNUNET_NETWORK_socket_set_inheritable (s))
-        GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
-                             "GNUNET_NETWORK_socket_set_inheritable");
-#endif
-      if (GNUNET_SYSERR == GNUNET_NETWORK_socket_set_blocking (s, GNUNET_NO))
-        {
-          /* we'll treat this one as fatal */
-          GNUNET_break (0 == GNUNET_NETWORK_socket_close (s));
-          return GNUNET_SYSERR;
-        }
-#if DEBUG_NETWORK
-      GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                 _("Trying to connect to `%s'\n"),
-                 GNUNET_a2s(sock->ai_pos->ai_addr,
-                            sock->ai_pos->ai_addrlen));
-#endif
-      if ((0 != GNUNET_NETWORK_socket_connect (s,
-                         sock->ai_pos->ai_addr,
-                         sock->ai_pos->ai_addrlen)) && (errno != EINPROGRESS))
-        {
-          /* maybe refused / unsupported address, try next */
-          GNUNET_log_strerror (GNUNET_ERROR_TYPE_INFO, "connect");
-          GNUNET_break (0 == GNUNET_NETWORK_socket_close (s));
-          sock->ai_pos = sock->ai_pos->ai_next;
-          continue;
-        }
-      break;
-    }
-  /* got one! copy address information! */
-  sock->addrlen = sock->ai_pos->ai_addrlen;
-  sock->addr = GNUNET_malloc (sock->addrlen);
-  memcpy (sock->addr, sock->ai_pos->ai_addr, sock->addrlen);
-  sock->ai_pos = sock->ai_pos->ai_next;
-  sock->sock = s;
-  return GNUNET_OK;
-}
-
-
-/**
- * Scheduler let us know that we're either ready to
- * write on the socket OR connect timed out.  Do the
- * right thing.
- */
-static void
-connect_continuation (void *cls,
-                      const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  struct GNUNET_CONNECTION_Handle *sock = cls;
-  unsigned int len;
-  int error;
-
-  /* nobody needs to wait for us anymore... */
-  sock->connect_task = GNUNET_SCHEDULER_NO_TASK;
-  /* Note: write-ready does NOT mean connect succeeded,
-     we need to use getsockopt to be sure */
-  len = sizeof (error);
-  errno = 0;
-  error = 0;
-  if ((0 == (tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY)) ||
-      (0 != GNUNET_NETWORK_socket_getsockopt (sock->sock, SOL_SOCKET, 
SO_ERROR, &error, &len)) ||
-      (error != 0) || (errno != 0))
-    {
-#if DEBUG_NETWORK
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                 "Failed to establish TCP connection to `%s'\n",
-                 GNUNET_a2s(sock->addr, sock->addrlen));
-#endif
-      /* connect failed / timed out */
-      GNUNET_break (0 == GNUNET_NETWORK_socket_close (sock->sock));
-      sock->sock = NULL;
-      if (GNUNET_SYSERR == try_connect (sock))
-        {
-          /* failed for good */
-#if DEBUG_NETWORK
-         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                     "Failed to establish TCP connection, no further addresses 
to try.\n");
-#endif
-         /* connect failed / timed out */
-          GNUNET_break (sock->ai_pos == NULL);
-          freeaddrinfo (sock->ai);
-          sock->ai = NULL;
-          return;
-        }
-      sock->connect_task = GNUNET_SCHEDULER_add_write_net (tc->sched, 
GNUNET_NO,    /* abort on shutdown */
-                                                       
GNUNET_SCHEDULER_PRIORITY_KEEP,
-                                                       
GNUNET_SCHEDULER_NO_TASK,
-                                                       
GNUNET_CONNECTION_CONNECT_RETRY_TIMEOUT,
-                                                       sock->sock,
-                                                       &connect_continuation,
-                                                       sock);
-      return;
-    }
-  /* connect succeeded! clean up "ai" */
-#if DEBUG_NETWORK
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-             "Connection to `%s' succeeded!\n",
-             GNUNET_a2s(sock->addr, sock->addrlen));
-#endif
-  freeaddrinfo (sock->ai);
-  sock->ai_pos = NULL;
-  sock->ai = NULL;
-}
-
-
-/**
- * Create a socket handle by (asynchronously) connecting to a host.
- * This function returns immediately, even if the connection has not
- * yet been established.  This function only creates TCP connections.
- *
- * @param sched scheduler to use
- * @param hostname name of the host to connect to
- * @param port port to connect to
- * @param maxbuf maximum write buffer size for the socket (use
- *        0 for sockets that need no write buffers, such as listen sockets)
- * @return the socket handle
- */
-struct GNUNET_CONNECTION_Handle *
-GNUNET_CONNECTION_create_from_connect (struct GNUNET_SCHEDULER_Handle
-                                           *sched, const char *hostname,
-                                           uint16_t port, size_t maxbuf)
-{
-  struct GNUNET_CONNECTION_Handle *ret;
-
-  ret = GNUNET_malloc (sizeof (struct GNUNET_CONNECTION_Handle) + maxbuf);
-  ret->sock = NULL;
-  ret->sched = sched;
-  ret->write_buffer = (char *) &ret[1];
-  ret->write_buffer_size = maxbuf;
-  ret->port = port;
-  ret->af_fam_offset = sizeof (address_families) / sizeof(address_families[0]);
-  ret->hostname = GNUNET_strdup (hostname);
-  if (GNUNET_SYSERR == try_connect (ret))
-    {
-      if (NULL != ret->ai)
-       freeaddrinfo (ret->ai);
-      GNUNET_free (ret->hostname);
-      GNUNET_free (ret);
-      return NULL;
-    }
-  ret->connect_task = GNUNET_SCHEDULER_add_write_net (sched, GNUNET_NO,     /* 
abort on shutdown */
-                                                  
GNUNET_SCHEDULER_PRIORITY_KEEP,
-                                                  GNUNET_SCHEDULER_NO_TASK,
-                                                  
GNUNET_CONNECTION_CONNECT_RETRY_TIMEOUT,
-                                                  ret->sock,
-                                                  &connect_continuation, ret);
-  return ret;
-
-}
-
-
-/**
- * Create a socket handle by (asynchronously) connecting to a host.
- * This function returns immediately, even if the connection has not
- * yet been established.  This function only creates TCP connections.
- *
- * @param sched scheduler to use
- * @param af_family address family to use
- * @param serv_addr server address
- * @param addrlen length of server address
- * @param maxbuf maximum write buffer size for the socket (use
- *        0 for sockets that need no write buffers, such as listen sockets)
- * @return the socket handle
- */
-struct GNUNET_CONNECTION_Handle *
-GNUNET_CONNECTION_create_from_sockaddr (struct GNUNET_SCHEDULER_Handle
-                                            *sched, int af_family,
-                                            const struct sockaddr *serv_addr,
-                                            socklen_t addrlen, size_t maxbuf)
-{
-  struct GNUNET_NETWORK_Descriptor *s;
-  struct GNUNET_CONNECTION_Handle *ret;
-
-  s = GNUNET_NETWORK_socket_socket (af_family, SOCK_STREAM, 0);
-  if (s == NULL)
-    {
-      GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING |
-                           GNUNET_ERROR_TYPE_BULK, "socket");
-      return NULL;
-    }
-#ifndef MINGW
-#if 0
-  // FIXME NILS
-  if (0 != fcntl (s, F_SETFD, fcntl (s, F_GETFD) | FD_CLOEXEC))
-    GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
-                         "fcntl");
-#endif
-#endif
-  if (GNUNET_SYSERR == GNUNET_NETWORK_socket_set_blocking (s, GNUNET_NO))
-    {
-      /* we'll treat this one as fatal */
-      GNUNET_break (0 == GNUNET_NETWORK_socket_close (s));
-      return NULL;
-    }
-#if DEBUG_NETWORK
-  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-             _("Trying to connect to `%s'\n"),
-             GNUNET_a2s(serv_addr, addrlen));
-#endif
-  if ((0 != GNUNET_NETWORK_socket_connect (s, serv_addr, addrlen)) && (errno 
!= EINPROGRESS))
-    {
-      /* maybe refused / unsupported address, try next */
-      GNUNET_log_strerror (GNUNET_ERROR_TYPE_INFO, "connect");
-      GNUNET_break (0 == GNUNET_NETWORK_socket_close (s));
-      return NULL;
-    }
-  ret = GNUNET_CONNECTION_create_from_existing (sched, s, maxbuf);
-  ret->addr = GNUNET_malloc (addrlen);
-  memcpy (ret->addr, serv_addr, addrlen);
-  ret->addrlen = addrlen;
-  return ret;
-}
-
-
-/**
- * Check if socket is valid (no fatal errors have happened so far).
- * Note that a socket that is still trying to connect is considered
- * valid.
- *
- * @param sock socket to check
- * @return GNUNET_YES if valid, GNUNET_NO otherwise
- */
-int
-GNUNET_CONNECTION_check (struct GNUNET_CONNECTION_Handle *sock)
-{
-  if (sock->ai != NULL)
-    return GNUNET_YES;          /* still trying to connect */
-  return (sock->sock == NULL) ? GNUNET_NO : GNUNET_YES;
-}
-
-
-/**
- * Scheduler let us know that the connect task is finished (or was
- * cancelled due to shutdown).  Now really clean up.
- */
-static void
-destroy_continuation (void *cls,
-                      const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  struct GNUNET_CONNECTION_Handle *sock = cls;
-  GNUNET_CONNECTION_TransmitReadyNotify notify;
-
-  if (sock->write_task != GNUNET_SCHEDULER_NO_TASK)
-    {
-      GNUNET_SCHEDULER_add_after (sock->sched,
-                                  GNUNET_YES,
-                                  GNUNET_SCHEDULER_PRIORITY_KEEP,
-                                  sock->write_task,
-                                  &destroy_continuation, sock);
-      return;
-    }
-  if (sock->sock != NULL)
-    {
-#if DEBUG_NETWORK
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Shutting down socket.\n");
-#endif
-      GNUNET_NETWORK_socket_shutdown (sock->sock, SHUT_RDWR);
-    }
-  if (sock->read_task != GNUNET_SCHEDULER_NO_TASK)
-    {
-      GNUNET_SCHEDULER_add_after (sock->sched,
-                                  GNUNET_YES,
-                                  GNUNET_SCHEDULER_PRIORITY_KEEP,
-                                  sock->read_task,
-                                  &destroy_continuation, sock);
-      return;
-    }
-  if (NULL != (notify = sock->nth.notify_ready))
-    {
-      sock->nth.notify_ready = NULL;
-      notify (sock->nth.notify_ready_cls, 0, NULL);
-      if (sock->nth.timeout_task != GNUNET_SCHEDULER_NO_TASK)
-        {
-          GNUNET_SCHEDULER_cancel (sock->sched, sock->nth.timeout_task);
-          sock->nth.timeout_task = GNUNET_SCHEDULER_NO_TASK;
-        }
-    }
-  if (sock->sock != NULL)
-    GNUNET_break (0 == GNUNET_NETWORK_socket_close (sock->sock));
-  GNUNET_free_non_null (sock->addr);
-  if (sock->ai != NULL)
-    freeaddrinfo (sock->ai);      
-  GNUNET_free_non_null (sock->hostname);
-  GNUNET_free (sock);
-}
-
-
-/**
- * Close the socket and free associated resources. Pending
- * transmissions are simply dropped.  A pending receive call will be
- * called with an error code of "EPIPE".
- *
- * @param sock socket to destroy
- */
-void
-GNUNET_CONNECTION_destroy (struct GNUNET_CONNECTION_Handle *sock)
-{
-  if (sock->write_buffer_off == 0)
-    sock->ai_pos = NULL;        /* if we're still trying to connect and have
-                                   no message pending, stop trying! */
-  GNUNET_assert (sock->sched != NULL);
-  GNUNET_SCHEDULER_add_after (sock->sched,
-                              GNUNET_YES,
-                              GNUNET_SCHEDULER_PRIORITY_KEEP,
-                              sock->connect_task,
-                              &destroy_continuation, sock);
-}
-
-/**
- * Tell the receiver callback that a timeout was reached.
- */
-static void
-signal_timeout (struct GNUNET_CONNECTION_Handle *sh)
-{
-  GNUNET_CONNECTION_Receiver receiver;
-
-#if DEBUG_NETWORK
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Network signals time out to receiver!\n");
-#endif
-  GNUNET_assert (NULL != (receiver = sh->receiver));
-  sh->receiver = NULL;
-  receiver (sh->receiver_cls, NULL, 0, NULL, 0, 0);
-}
-
-
-/**
- * Tell the receiver callback that we had an IO error.
- */
-static void
-signal_error (struct GNUNET_CONNECTION_Handle *sh, int errcode)
-{
-  GNUNET_CONNECTION_Receiver receiver;
-  GNUNET_assert (NULL != (receiver = sh->receiver));
-  sh->receiver = NULL;
-  receiver (sh->receiver_cls, NULL, 0, sh->addr, sh->addrlen, errcode);
-}
-
-
-/**
- * This function is called once we either timeout
- * or have data ready to read.
- */
-static void
-receive_ready (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  struct GNUNET_CONNECTION_Handle *sh = cls;
-  struct GNUNET_TIME_Absolute now;
-  char buffer[sh->max];
-  ssize_t ret;
-  GNUNET_CONNECTION_Receiver receiver;
-
-  sh->read_task = GNUNET_SCHEDULER_NO_TASK;
-  now = GNUNET_TIME_absolute_get ();
-  if ((now.value > sh->receive_timeout.value) ||
-      (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT)) ||
-      (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN)))
-    {
-#if DEBUG_NETWORK
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                  "Receive encounters error: time out...\n");
-#endif
-      signal_timeout (sh);
-      return;
-    }
-  if (sh->sock == NULL)
-    {
-      /* connect failed for good */
-#if DEBUG_NETWORK
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                  "Receive encounters error, socket closed...\n");
-#endif
-      signal_error (sh, ECONNREFUSED);
-      return;
-    }
-  GNUNET_assert (GNUNET_NETWORK_fdset_isset (tc->read_ready, sh->sock));
-RETRY:
-  ret = GNUNET_NETWORK_socket_recv (sh->sock, buffer, sh->max,
-#ifndef MINGW
-      // FIXME MINGW
-      MSG_DONTWAIT
-#else
-      0
-#endif
-      );
-  if (ret == -1)
-    {
-      if (errno == EINTR)
-        goto RETRY;
-#if DEBUG_NETWORK
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                  "Error receiving: %s\n", STRERROR (errno));
-#endif
-      signal_error (sh, errno);
-      return;
-    }
-#if DEBUG_NETWORK
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "receive_ready read %u/%u bytes from `%s'!\n",
-             (unsigned int) ret,
-             sh->max,
-             GNUNET_a2s(sh->addr, sh->addrlen));
-#endif
-  GNUNET_assert (NULL != (receiver = sh->receiver));
-  sh->receiver = NULL;
-  receiver (sh->receiver_cls, buffer, ret, sh->addr, sh->addrlen, 0);
-}
-
-
-/**
- * This function is called after establishing a connection either has
- * succeeded or timed out.  Note that it is possible that the attempt
- * timed out and that we're immediately retrying.  If we are retrying,
- * we need to wait again (or timeout); if we succeeded, we need to
- * wait for data (or timeout).
- */
-static void
-receive_again (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  struct GNUNET_CONNECTION_Handle *sh = cls;
-  struct GNUNET_TIME_Absolute now;
-
-  sh->read_task = GNUNET_SCHEDULER_NO_TASK;
-  if ((sh->sock == NULL) &&
-      (sh->connect_task == GNUNET_SCHEDULER_NO_TASK))
-    {
-      /* not connected and no longer trying */
-#if DEBUG_NETWORK
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                  "Receive encounters error, socket closed...\n");
-#endif
-      signal_error (sh, ECONNREFUSED);
-      return;
-    }
-  now = GNUNET_TIME_absolute_get ();
-  if ((now.value > sh->receive_timeout.value) ||
-      (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN)))
-    {
-#if DEBUG_NETWORK
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                  "Receive encounters error: time out...\n");
-#endif
-      signal_timeout (sh);
-      return;
-    }
-  if (sh->connect_task != GNUNET_SCHEDULER_NO_TASK)
-    {
-      /* connect was retried */
-      sh->read_task = GNUNET_SCHEDULER_add_after (tc->sched,
-                                                  GNUNET_YES,
-                                                  
GNUNET_SCHEDULER_PRIORITY_KEEP,
-                                                  sh->connect_task,
-                                                  &receive_again, sh);
-      return;
-    }
-  /* connect succeeded, wait for data! */
-  sh->read_task = GNUNET_SCHEDULER_add_read_net (tc->sched,
-                                            GNUNET_YES,
-                                            GNUNET_SCHEDULER_PRIORITY_KEEP,
-                                            sh->connect_task,
-                                            GNUNET_TIME_absolute_get_remaining
-                                            (sh->receive_timeout),
-                                            sh->sock, &receive_ready,
-                                            sh);
-}
-
-
-/**
- * Receive data from the given socket.  Note that this function will
- * call "receiver" asynchronously using the scheduler.  It will
- * "immediately" return.  Note that there MUST only be one active
- * receive call per socket at any given point in time (so do not
- * call receive again until the receiver callback has been invoked).
- *
- * @param sched scheduler to use
- * @param sock socket handle
- * @param max maximum number of bytes to read
- * @param timeout maximum amount of time to wait (use -1 for "forever")
- * @param receiver function to call with received data
- * @param receiver_cls closure for receiver
- * @return scheduler task ID used for receiving, GNUNET_SCHEDULER_NO_TASK on 
error
- */
-GNUNET_SCHEDULER_TaskIdentifier
-GNUNET_CONNECTION_receive (struct GNUNET_CONNECTION_Handle *sock,
-                        size_t max,
-                        struct GNUNET_TIME_Relative timeout,
-                        GNUNET_CONNECTION_Receiver receiver, void 
*receiver_cls)
-{
-  struct GNUNET_SCHEDULER_TaskContext tc;
-
-  GNUNET_assert ((sock->read_task == GNUNET_SCHEDULER_NO_TASK) &&
-                 (sock->receiver == NULL));
-  sock->receiver = receiver;
-  sock->receiver_cls = receiver_cls;
-  sock->receive_timeout = GNUNET_TIME_relative_to_absolute (timeout);
-  sock->max = max;
-  memset (&tc, 0, sizeof (tc));
-  tc.sched = sock->sched;
-  tc.reason = GNUNET_SCHEDULER_REASON_PREREQ_DONE;
-  receive_again (sock, &tc);
-  return sock->read_task;
-}
-
-
-/**
- * Cancel receive job on the given socket.  Note that the
- * receiver callback must not have been called yet in order
- * for the cancellation to be valid.
- *
- * @param sock socket handle
- * @param task task identifier returned from the receive call
- * @return closure of the original receiver callback
- */
-void *
-GNUNET_CONNECTION_receive_cancel (struct GNUNET_CONNECTION_Handle *sock,
-                               GNUNET_SCHEDULER_TaskIdentifier task)
-{
-  GNUNET_assert (sock->read_task == task);
-  GNUNET_assert (sock == GNUNET_SCHEDULER_cancel (sock->sched, task));
-  sock->read_task = GNUNET_SCHEDULER_NO_TASK;
-  sock->receiver = NULL;
-  return sock->receiver_cls;
-}
-
-
-/**
- * Try to call the transmit notify method (check if we do
- * have enough space available first)!
- *
- * @param sock socket for which we should do this processing
- * @return GNUNET_YES if we were able to call notify
- */
-static int
-process_notify (struct GNUNET_CONNECTION_Handle *sock)
-{
-  size_t used;
-  size_t avail;
-  size_t size;
-  GNUNET_CONNECTION_TransmitReadyNotify notify;
-
-  GNUNET_assert (sock->write_task == GNUNET_SCHEDULER_NO_TASK);
-  if (NULL == (notify = sock->nth.notify_ready))
-    return GNUNET_NO;
-  used = sock->write_buffer_off - sock->write_buffer_pos;
-  avail = sock->write_buffer_size - used;
-  size = sock->nth.notify_size;
-  if (sock->nth.notify_size > avail)
-    return GNUNET_NO;
-  sock->nth.notify_ready = NULL;
-  if (sock->nth.timeout_task != GNUNET_SCHEDULER_NO_TASK)
-    {
-      GNUNET_SCHEDULER_cancel (sock->sched, sock->nth.timeout_task);
-      sock->nth.timeout_task = GNUNET_SCHEDULER_NO_TASK;
-    }
-  if (sock->write_buffer_size - sock->write_buffer_off < size)
-    {
-      /* need to compact */
-      memmove (sock->write_buffer,
-               &sock->write_buffer[sock->write_buffer_pos], used);
-      sock->write_buffer_off -= sock->write_buffer_pos;
-      sock->write_buffer_pos = 0;
-    }
-  GNUNET_assert (sock->write_buffer_size - sock->write_buffer_off >= size);
-  size = notify (sock->nth.notify_ready_cls,
-                 sock->write_buffer_size - sock->write_buffer_off,
-                 &sock->write_buffer[sock->write_buffer_off]);
-  sock->write_buffer_off += size;
-  return GNUNET_YES;
-}
-
-
-/**
- * Task invoked by the scheduler when a call to transmit
- * is timing out (we never got enough buffer space to call
- * the callback function before the specified timeout
- * expired).
- *
- * This task notifies the client about the timeout.
- */
-static void
-transmit_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  struct GNUNET_CONNECTION_Handle *sock = cls;
-  GNUNET_CONNECTION_TransmitReadyNotify notify;
-
-#if DEBUG_NETWORK
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Transmit fails, time out reached.\n");
-#endif
-  notify = sock->nth.notify_ready;
-  sock->nth.notify_ready = NULL;
-  notify (sock->nth.notify_ready_cls, 0, NULL);
-}
-
-
-static void
-transmit_error (struct GNUNET_CONNECTION_Handle *sock)
-{
-  if (sock->nth.notify_ready == NULL)
-    return;                     /* nobody to tell about it */
-  if (sock->nth.timeout_task != GNUNET_SCHEDULER_NO_TASK)
-    {
-      GNUNET_SCHEDULER_cancel (sock->sched, sock->nth.timeout_task);
-      sock->nth.timeout_task = GNUNET_SCHEDULER_NO_TASK;
-    }
-  transmit_timeout (sock, NULL);
-}
-
-
-/**
- * See if we are now connected.  If not, wait longer for
- * connect to succeed.  If connected, we should be able
- * to write now as well, unless we timed out.
- */
-static void
-transmit_ready (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  struct GNUNET_CONNECTION_Handle *sock = cls;
-  ssize_t ret;
-  size_t have;
-
-  GNUNET_assert (sock->write_task != GNUNET_SCHEDULER_NO_TASK);
-  sock->write_task = GNUNET_SCHEDULER_NO_TASK;
-  if (sock->connect_task != GNUNET_SCHEDULER_NO_TASK)
-    {
-      /* still waiting for connect */
-      GNUNET_assert (sock->write_task ==
-                     GNUNET_SCHEDULER_NO_TASK);
-      sock->write_task =
-        GNUNET_SCHEDULER_add_delayed (tc->sched, GNUNET_NO,
-                                      GNUNET_SCHEDULER_PRIORITY_KEEP,
-                                      sock->connect_task,
-                                      GNUNET_TIME_UNIT_ZERO, &transmit_ready,
-                                      sock);
-      return;
-    }
-  if ( (sock->sock == NULL) ||
-       ( (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT)) &&
-        (0 == (tc->reason & GNUNET_SCHEDULER_REASON_PREREQ_DONE)) &&
-        (!GNUNET_NETWORK_fdset_isset (tc->write_ready, sock->sock)))  )
-    {
-#if DEBUG_NETWORK
-      GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                  _("Could not satisfy pending transmission request, socket 
closed or connect failed.\n"));
-#endif
-      if (NULL != sock->sock)
-       {
-         GNUNET_NETWORK_socket_shutdown (sock->sock, SHUT_RDWR);
-         GNUNET_break (0 == GNUNET_NETWORK_socket_close (sock->sock));
-         sock->sock = NULL;
-       }
-      transmit_error (sock);
-      return;                   /* connect failed for good, we're finished */
-    }
- if ((tc->write_ready == NULL) || (!GNUNET_NETWORK_fdset_isset 
(tc->write_ready, sock->sock)))
-    {
-      /* special circumstances (in particular,
-        PREREQ_DONE after connect): not yet ready to write,
-        but no "fatal" error either.  Hence retry.  */
-      goto SCHEDULE_WRITE;
-    }
-  GNUNET_assert (sock->write_buffer_off >= sock->write_buffer_pos);
-  process_notify (sock);
-  have = sock->write_buffer_off - sock->write_buffer_pos;
-  if (have == 0)
-    {
-      /* no data ready for writing, terminate write loop */
-      return;
-    }
-RETRY:
-  ret = GNUNET_NETWORK_socket_send (sock->sock,
-              &sock->write_buffer[sock->write_buffer_pos],
-              have,
-#ifndef MINGW
-              // FIXME NILS
-              MSG_DONTWAIT | MSG_NOSIGNAL
-#else
-              0
-#endif
-  );
-  if (ret == -1)
-    {
-      if (errno == EINTR)
-        goto RETRY;
-#if DEBUG_NETWORK
-      GNUNET_log_strerror (GNUNET_ERROR_TYPE_DEBUG, "send");
-#endif
-      GNUNET_NETWORK_socket_shutdown (sock->sock, SHUT_RDWR);
-      GNUNET_break (0 == GNUNET_NETWORK_socket_close (sock->sock));
-      sock->sock = NULL;
-      transmit_error (sock);
-      return;
-    }
-#if DEBUG_NETWORK
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "transmit_ready transmitted %u/%u bytes to `%s'\n",
-             (unsigned int) ret,
-             have,
-             GNUNET_a2s(sock->addr, sock->addrlen));
-#endif
-  sock->write_buffer_pos += ret;
-  if (sock->write_buffer_pos == sock->write_buffer_off)
-    {
-      /* transmitted all pending data */
-      sock->write_buffer_pos = 0;
-      sock->write_buffer_off = 0;
-    }
-  if ((sock->write_buffer_off == 0) && (NULL == sock->nth.notify_ready))
-    return;                     /* all data sent! */
-  /* not done writing, schedule more */
-SCHEDULE_WRITE:
-  if (sock->write_task == GNUNET_SCHEDULER_NO_TASK)
-    sock->write_task =
-      GNUNET_SCHEDULER_add_write_net (tc->sched,
-                                  GNUNET_NO,
-                                  GNUNET_SCHEDULER_PRIORITY_KEEP,
-                                  GNUNET_SCHEDULER_NO_TASK,
-                                  GNUNET_TIME_absolute_get_remaining 
(sock->nth.transmit_timeout),
-                                  sock->sock, &transmit_ready, sock);
-}
-
-
-/**
- * Ask the socket to call us once the specified number of bytes
- * are free in the transmission buffer.  May call the notify
- * method immediately if enough space is available.
- *
- * @param sock socket
- * @param size number of bytes to send
- * @param timeout after how long should we give up (and call
- *        notify with buf NULL and size 0)?
- * @param notify function to call
- * @param notify_cls closure for notify
- * @return non-NULL if the notify callback was queued,
- *         NULL if we are already going to notify someone else (busy)
- */
-struct GNUNET_CONNECTION_TransmitHandle *
-GNUNET_CONNECTION_notify_transmit_ready (struct GNUNET_CONNECTION_Handle
-                                      *sock, size_t size,
-                                      struct GNUNET_TIME_Relative timeout,
-                                      GNUNET_CONNECTION_TransmitReadyNotify
-                                      notify, void *notify_cls)
-{
-  if (sock->nth.notify_ready != NULL)
-    return NULL;
-  GNUNET_assert (notify != NULL);
-  GNUNET_assert (sock->write_buffer_size >= size);
-
-  if ((sock->sock == NULL) &&
-      (sock->connect_task == GNUNET_SCHEDULER_NO_TASK))
-    {
-#if DEBUG_NETWORK
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                  "Transmission request of size %u fails, connection 
failed.\n",
-                 size);
-#endif
-      notify (notify_cls, 0, NULL);
-      return &sock->nth;
-    }
-  GNUNET_assert (sock->write_buffer_off <= sock->write_buffer_size);
-  GNUNET_assert (sock->write_buffer_pos <= sock->write_buffer_size);
-  GNUNET_assert (sock->write_buffer_pos <= sock->write_buffer_off);
-  sock->nth.notify_ready = notify;
-  sock->nth.notify_ready_cls = notify_cls;
-  sock->nth.sh = sock;
-  sock->nth.notify_size = size;
-  sock->nth.transmit_timeout = GNUNET_TIME_relative_to_absolute (timeout);
-  sock->nth.timeout_task = GNUNET_SCHEDULER_add_delayed (sock->sched,
-                                                         GNUNET_NO,
-                                                         
GNUNET_SCHEDULER_PRIORITY_KEEP,
-                                                         
GNUNET_SCHEDULER_NO_TASK,
-                                                         timeout,
-                                                         &transmit_timeout,
-                                                         sock);
-  if (sock->write_task == GNUNET_SCHEDULER_NO_TASK)
-    {
-      if (sock->connect_task == GNUNET_SCHEDULER_NO_TASK)
-       sock->write_task = GNUNET_SCHEDULER_add_write_net (sock->sched,
-                                                      GNUNET_NO,
-                                                      
GNUNET_SCHEDULER_PRIORITY_KEEP,
-                                                      GNUNET_SCHEDULER_NO_TASK,
-                                                      
GNUNET_TIME_absolute_get_remaining (sock->nth.transmit_timeout),
-                                                      sock->sock,
-                                                      &transmit_ready, sock);
-      else
-       sock->write_task = GNUNET_SCHEDULER_add_delayed (sock->sched,
-                                                        GNUNET_NO,
-                                                        
GNUNET_SCHEDULER_PRIORITY_KEEP,
-                                                        sock->connect_task,
-                                                        GNUNET_TIME_UNIT_ZERO,
-                                                        &transmit_ready, sock);
-    }
-  return &sock->nth;
-}
-
-
-/**
- * Cancel the specified transmission-ready
- * notification.
- */
-void
-GNUNET_CONNECTION_notify_transmit_ready_cancel (struct
-                                             GNUNET_CONNECTION_TransmitHandle 
*h)
-{
-  GNUNET_assert (h->notify_ready != NULL);
-  GNUNET_SCHEDULER_cancel (h->sh->sched, h->timeout_task);
-  h->timeout_task = GNUNET_SCHEDULER_NO_TASK;
-  h->notify_ready = NULL;
-}
-
-
-#if 0                           /* keep Emacsens' auto-indent happy */
-{
-#endif
-#ifdef __cplusplus
-}
-#endif

Copied: gnunet/src/util/test_connection.c (from rev 8876, 
gnunet/src/util/test_network.c)
===================================================================
--- gnunet/src/util/test_connection.c                           (rev 0)
+++ gnunet/src/util/test_connection.c   2009-08-29 19:37:54 UTC (rev 8880)
@@ -0,0 +1,210 @@
+/*
+     This file is part of GNUnet.
+     (C) 2009 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 2, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+/**
+ * @file util/test_connection.c
+ * @brief tests for connection.c
+ */
+#include "platform.h"
+#include "gnunet_common.h"
+#include "gnunet_connection_lib.h"
+#include "gnunet_scheduler_lib.h"
+#include "gnunet_time_lib.h"
+
+#define VERBOSE GNUNET_NO
+
+#define PORT 12435
+
+
+static struct GNUNET_CONNECTION_Handle *csock;
+
+static struct GNUNET_CONNECTION_Handle *asock;
+
+static struct GNUNET_CONNECTION_Handle *lsock;
+
+static size_t sofar;
+
+static int ls;
+
+
+
+/**
+ * Create and initialize a listen socket for the server.
+ *
+ * @return -1 on error, otherwise the listen socket
+ */
+static struct GNUNET_NETWORK_Descriptor *
+open_listen_socket ()
+{
+  const static int on = 1;
+  struct sockaddr_in sa;
+  struct GNUNET_NETWORK_Descriptor *desc;
+
+  memset (&sa, 0, sizeof (sa));
+  sa.sin_port = htons (PORT);
+  sa.sin_family = AF_INET;
+  desc = GNUNET_NETWORK_socket_socket (AF_INET, SOCK_STREAM, 0);
+  GNUNET_assert (desc != NULL);
+  if (GNUNET_NETWORK_socket_setsockopt (desc, SOL_SOCKET, SO_REUSEADDR, &on, 
sizeof (on)) < 0)
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+                "setsockopt");
+  GNUNET_assert (GNUNET_NETWORK_socket_bind (desc, &sa, sizeof (sa)) >= 0);
+  GNUNET_NETWORK_socket_listen (desc, 5);
+  return desc;
+}
+
+static void
+receive_check (void *cls,
+               const void *buf,
+               size_t available,
+               const struct sockaddr *addr, socklen_t addrlen, int errCode)
+{
+  int *ok = cls;
+
+#if VERBOSE
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Receive validates incoming data\n");
+#endif
+  GNUNET_assert (buf != NULL);  /* no timeout */
+  if (0 == memcmp (&"Hello World"[sofar], buf, available))
+    sofar += available;
+  if (sofar < 12)
+    {
+#if VERBOSE
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Receive needs more data\n");
+#endif
+      GNUNET_CONNECTION_receive (asock,
+                              1024,
+                              GNUNET_TIME_relative_multiply
+                              (GNUNET_TIME_UNIT_SECONDS, 5), &receive_check,
+                              cls);
+    }
+  else
+    {
+#if VERBOSE
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                  "Receive closes accepted socket\n");
+#endif
+      *ok = 0;
+      GNUNET_CONNECTION_destroy (asock);
+    }
+}
+
+
+static void
+run_accept (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+#if VERBOSE
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Test accepts connection\n");
+#endif
+  asock = GNUNET_CONNECTION_create_from_accept (tc->sched,
+                                                    NULL, NULL, ls, 1024);
+  GNUNET_assert (asock != NULL);
+  GNUNET_assert (GNUNET_YES == GNUNET_CONNECTION_check (asock));
+#if VERBOSE
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Test destroys listen socket\n");
+#endif
+  GNUNET_CONNECTION_destroy (lsock);
+#if VERBOSE
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Test asks to receive on accepted socket\n");
+#endif
+  GNUNET_CONNECTION_receive (asock,
+                          1024,
+                          GNUNET_TIME_relative_multiply
+                          (GNUNET_TIME_UNIT_SECONDS, 5), &receive_check, cls);
+}
+
+static size_t
+make_hello (void *cls, size_t size, void *buf)
+{
+#if VERBOSE
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Test prepares to transmit on connect socket\n");
+#endif
+  GNUNET_assert (size >= 12);
+  strcpy ((char *) buf, "Hello World");
+  return 12;
+}
+
+static void
+task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  ls = open_listen_socket ();
+  lsock = GNUNET_CONNECTION_create_from_existing (tc->sched, ls, 0);
+  GNUNET_assert (lsock != NULL);
+  csock = GNUNET_CONNECTION_create_from_connect (tc->sched,
+                                                     "localhost", PORT, 1024);
+  GNUNET_assert (csock != NULL);
+#if VERBOSE
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Test asks for write notification\n");
+#endif
+  GNUNET_assert (NULL !=
+                 GNUNET_CONNECTION_notify_transmit_ready (csock,
+                                                       12,
+                                                       
GNUNET_TIME_UNIT_SECONDS,
+                                                       &make_hello, NULL));
+#if VERBOSE
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Test destroys client socket\n");
+#endif
+  GNUNET_CONNECTION_destroy (csock);
+#if VERBOSE
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Test prepares to accept\n");
+#endif
+  GNUNET_SCHEDULER_add_read_net (tc->sched,
+                             GNUNET_NO,
+                             GNUNET_SCHEDULER_PRIORITY_HIGH,
+                             GNUNET_SCHEDULER_NO_TASK,
+                             GNUNET_TIME_UNIT_FOREVER_REL,
+                             ls, &run_accept, cls);
+}
+
+
+/**
+ * Main method, starts scheduler with task ,
+ * checks that "ok" is correct at the end.
+ */
+static int
+check ()
+{
+  int ok;
+
+  ok = 1;
+  GNUNET_SCHEDULER_run (&task, &ok);
+  return ok;
+}
+
+
+
+int
+main (int argc, char *argv[])
+{
+  int ret = 0;
+
+  GNUNET_log_setup ("test_connection",
+#if VERBOSE
+                    "DEBUG",
+#else
+                    "WARNING",
+#endif
+                    NULL);
+  ret += check ();
+  return ret;
+}
+
+/* end of test_connection.c */

Copied: gnunet/src/util/test_connection_addressing.c (from rev 8876, 
gnunet/src/util/test_network_addressing.c)
===================================================================
--- gnunet/src/util/test_connection_addressing.c                                
(rev 0)
+++ gnunet/src/util/test_connection_addressing.c        2009-08-29 19:37:54 UTC 
(rev 8880)
@@ -0,0 +1,200 @@
+/*
+     This file is part of GNUnet.
+     (C) 2009 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 2, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+/**
+ * @file util/test_connection_addressing.c
+ * @brief tests for connection.c
+ */
+#include "platform.h"
+#include "gnunet_common.h"
+#include "gnunet_connection_lib.h"
+#include "gnunet_scheduler_lib.h"
+#include "gnunet_time_lib.h"
+
+#define VERBOSE GNUNET_NO
+
+#define PORT 12435
+
+
+static struct GNUNET_CONNECTION_Handle *csock;
+
+static struct GNUNET_CONNECTION_Handle *asock;
+
+static struct GNUNET_CONNECTION_Handle *lsock;
+
+static size_t sofar;
+
+static struct GNUNET_NETWORK_Descriptor *ls;
+
+
+
+/**
+ * Create and initialize a listen socket for the server.
+ *
+ * @return NULL on error, otherwise the listen socket
+ */
+static struct GNUNET_NETWORK_Descriptor *
+open_listen_socket ()
+{
+  const static int on = 1;
+  struct sockaddr_in sa;
+  struct GNUNET_NETWORK_Descriptor *desc;
+
+  memset (&sa, 0, sizeof (sa));
+  sa.sin_port = htons (PORT);
+  desc = GNUNET_NETWORK_socket_socket (AF_INET, SOCK_STREAM, 0);
+  GNUNET_assert (desc != 0);
+  if (GNUNET_NETWORK_socket_setsockopt (desc, SOL_SOCKET, SO_REUSEADDR, &on, 
sizeof (on)) < 0)
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+                "setsockopt");
+  GNUNET_assert (GNUNET_NETWORK_socket_bind (desc, &sa, sizeof (sa)) >= 0);
+  GNUNET_NETWORK_socket_listen (desc, 5);
+  return desc;
+}
+
+
+static void
+receive_check (void *cls,
+               const void *buf,
+               size_t available,
+               const struct sockaddr *addr, socklen_t addrlen, int errCode)
+{
+  int *ok = cls;
+
+  GNUNET_assert (buf != NULL);  /* no timeout */
+  if (0 == memcmp (&"Hello World"[sofar], buf, available))
+    sofar += available;
+  if (sofar < 12)
+    {
+      GNUNET_CONNECTION_receive (asock,
+                              1024,
+                              GNUNET_TIME_relative_multiply
+                              (GNUNET_TIME_UNIT_SECONDS, 5), &receive_check,
+                              cls);
+    }
+  else
+    {
+      *ok = 0;
+      GNUNET_CONNECTION_destroy (asock);
+    }
+}
+
+
+static void
+run_accept (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  void *addr;
+  size_t alen;
+  struct sockaddr_in *v4;
+  struct sockaddr_in expect;
+
+  asock = GNUNET_CONNECTION_create_from_accept (tc->sched,
+                                                    NULL, NULL, ls, 1024);
+  GNUNET_assert (asock != NULL);
+  GNUNET_assert (GNUNET_YES == GNUNET_CONNECTION_check (asock));
+  GNUNET_assert (GNUNET_OK ==
+                 GNUNET_CONNECTION_get_address (asock, &addr, &alen));
+  GNUNET_assert (alen == sizeof (struct sockaddr_in));
+  v4 = addr;
+  memset (&expect, 0, sizeof (expect));
+  expect.sin_family = AF_INET;
+  expect.sin_port = v4->sin_port;
+  expect.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
+  GNUNET_assert (0 == memcmp (&expect, v4, alen));
+  GNUNET_free (addr);
+  GNUNET_CONNECTION_destroy (lsock);
+  GNUNET_CONNECTION_receive (asock,
+                          1024,
+                          GNUNET_TIME_relative_multiply
+                          (GNUNET_TIME_UNIT_SECONDS, 5), &receive_check, cls);
+}
+
+static size_t
+make_hello (void *cls, size_t size, void *buf)
+{
+  GNUNET_assert (size >= 12);
+  strcpy ((char *) buf, "Hello World");
+  return 12;
+}
+
+static void
+task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  struct sockaddr_in v4;
+  ls = open_listen_socket ();
+  lsock = GNUNET_CONNECTION_create_from_existing (tc->sched, ls, 0);
+  GNUNET_assert (lsock != NULL);
+
+  v4.sin_family = AF_INET;
+  v4.sin_port = htons (PORT);
+  v4.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
+  csock = GNUNET_CONNECTION_create_from_sockaddr (tc->sched,
+                                                      AF_INET,
+                                                      (const struct sockaddr
+                                                       *) &v4, sizeof (v4),
+                                                      1024);
+  GNUNET_assert (csock != NULL);
+  GNUNET_assert (NULL !=
+                 GNUNET_CONNECTION_notify_transmit_ready (csock,
+                                                       12,
+                                                       
GNUNET_TIME_UNIT_SECONDS,
+                                                       &make_hello, NULL));
+  GNUNET_CONNECTION_destroy (csock);
+  GNUNET_SCHEDULER_add_read_net (tc->sched,
+                             GNUNET_NO,
+                             GNUNET_SCHEDULER_PRIORITY_HIGH,
+                             GNUNET_SCHEDULER_NO_TASK,
+                             GNUNET_TIME_UNIT_FOREVER_REL,
+                             ls, &run_accept, cls);
+}
+
+
+/**
+ * Main method, starts scheduler with task ,
+ * checks that "ok" is correct at the end.
+ */
+static int
+check ()
+{
+  int ok;
+
+  ok = 1;
+  GNUNET_SCHEDULER_run (&task, &ok);
+  return ok;
+}
+
+
+
+int
+main (int argc, char *argv[])
+{
+  int ret = 0;
+
+  GNUNET_log_setup ("test_connection_addressing", 
+#if VERBOSE
+                   "DEBUG",
+#else
+                   "WARNING", 
+#endif
+                   NULL);
+  ret += check ();
+  return ret;
+}
+
+/* end of test_connection_addressing.c */

Copied: gnunet/src/util/test_connection_receive_cancel.c (from rev 8876, 
gnunet/src/util/test_network_receive_cancel.c)
===================================================================
--- gnunet/src/util/test_connection_receive_cancel.c                            
(rev 0)
+++ gnunet/src/util/test_connection_receive_cancel.c    2009-08-29 19:37:54 UTC 
(rev 8880)
@@ -0,0 +1,164 @@
+/*
+     This file is part of GNUnet.
+     (C) 2009 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 2, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+/**
+ * @file util/test_connection_receive_cancel.c
+ * @brief tests for connection.c
+ */
+#include "platform.h"
+#include "gnunet_common.h"
+#include "gnunet_connection_lib.h"
+#include "gnunet_scheduler_lib.h"
+#include "gnunet_time_lib.h"
+
+#define VERBOSE GNUNET_NO
+
+#define PORT 12435
+
+
+static struct GNUNET_CONNECTION_Handle *csock;
+
+static struct GNUNET_CONNECTION_Handle *asock;
+
+static struct GNUNET_CONNECTION_Handle *lsock;
+
+static struct GNUNET_NETWORK_Descriptor *ls;
+
+static GNUNET_SCHEDULER_TaskIdentifier receive_task;
+
+
+
+
+/**
+ * Create and initialize a listen socket for the server.
+ *
+ * @return NULL on error, otherwise the listen socket
+ */
+static struct GNUNET_NETWORK_Descriptor *
+open_listen_socket ()
+{
+  const static int on = 1;
+  struct sockaddr_in sa;
+  struct GNUNET_NETWORK_Descriptor *desc;
+
+  memset (&sa, 0, sizeof (sa));
+  sa.sin_port = htons (PORT);
+  desc = GNUNET_NETWORK_socket_socket (AF_INET, SOCK_STREAM, 0);
+  GNUNET_assert (desc != NULL);
+  if (GNUNET_NETWORK_socket_setsockopt (desc, SOL_SOCKET, SO_REUSEADDR, &on, 
sizeof (on)) < 0)
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+                "setsockopt");
+  GNUNET_assert (GNUNET_NETWORK_socket_bind (desc, &sa, sizeof (sa)) >= 0);
+  GNUNET_NETWORK_socket_listen (desc, 5);
+  return desc;
+}
+
+
+
+static void
+dead_receive (void *cls,
+              const void *buf,
+              size_t available,
+              const struct sockaddr *addr, socklen_t addrlen, int errCode)
+{
+  GNUNET_assert (0);
+}
+
+
+static void
+run_accept_cancel (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+
+  asock = GNUNET_CONNECTION_create_from_accept (tc->sched,
+                                                    NULL, NULL, ls, 1024);
+  GNUNET_assert (asock != NULL);
+  GNUNET_assert (GNUNET_YES == GNUNET_CONNECTION_check (asock));
+  GNUNET_CONNECTION_destroy (lsock);
+  receive_task
+    = GNUNET_CONNECTION_receive (asock,
+                              1024,
+                              GNUNET_TIME_relative_multiply
+                              (GNUNET_TIME_UNIT_SECONDS, 5), &dead_receive,
+                              cls);
+}
+
+
+static void
+receive_cancel_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  int *ok = cls;
+  GNUNET_CONNECTION_receive_cancel (asock, receive_task);
+  GNUNET_CONNECTION_destroy (csock);
+  GNUNET_CONNECTION_destroy (asock);
+  *ok = 0;
+}
+
+
+
+static void
+task_receive_cancel (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  ls = open_listen_socket ();
+  lsock = GNUNET_CONNECTION_create_from_existing (tc->sched, ls, 0);
+  GNUNET_assert (lsock != NULL);
+  csock = GNUNET_CONNECTION_create_from_connect (tc->sched,
+                                                     "localhost", PORT, 1024);
+  GNUNET_assert (csock != NULL);
+  GNUNET_SCHEDULER_add_read_net (tc->sched,
+                             GNUNET_NO,
+                             GNUNET_SCHEDULER_PRIORITY_HIGH,
+                             GNUNET_SCHEDULER_NO_TASK,
+                             GNUNET_TIME_UNIT_FOREVER_REL,
+                             ls, &run_accept_cancel, cls);
+  GNUNET_SCHEDULER_add_delayed (tc->sched,
+                                GNUNET_NO,
+                                GNUNET_SCHEDULER_PRIORITY_KEEP,
+                                GNUNET_SCHEDULER_NO_TASK,
+                                GNUNET_TIME_UNIT_SECONDS,
+                                &receive_cancel_task, cls);
+}
+
+
+
+/**
+ * Main method, starts scheduler with task_timeout.
+ */
+static int
+check_receive_cancel ()
+{
+  int ok;
+
+  ok = 1;
+  GNUNET_SCHEDULER_run (&task_receive_cancel, &ok);
+  return ok;
+}
+
+
+int
+main (int argc, char *argv[])
+{
+  int ret = 0;
+
+  GNUNET_log_setup ("test_connection_receive_cancel", "WARNING", NULL);
+  ret += check_receive_cancel ();
+
+  return ret;
+}
+
+/* end of test_connection_receive_cancel.c */

Copied: gnunet/src/util/test_connection_timeout.c (from rev 8876, 
gnunet/src/util/test_network_timeout.c)
===================================================================
--- gnunet/src/util/test_connection_timeout.c                           (rev 0)
+++ gnunet/src/util/test_connection_timeout.c   2009-08-29 19:37:54 UTC (rev 
8880)
@@ -0,0 +1,144 @@
+/*
+     This file is part of GNUnet.
+     (C) 2009 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 2, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+/**
+ * @file util/test_connection_timeout.c
+ * @brief tests for connection.c
+ */
+#include "platform.h"
+#include "gnunet_common.h"
+#include "gnunet_connection_lib.h"
+#include "gnunet_scheduler_lib.h"
+#include "gnunet_time_lib.h"
+
+#define VERBOSE GNUNET_NO
+
+#define PORT 12435
+
+static struct GNUNET_CONNECTION_Handle *csock;
+
+static struct GNUNET_CONNECTION_Handle *lsock;
+
+static struct GNUNET_NETWORK_Descriptor *ls;
+
+
+/**
+ * Create and initialize a listen socket for the server.
+ *
+ * @return NULL on error, otherwise the listen socket
+ */
+static struct GNUNET_NETWORK_Descriptor *
+open_listen_socket ()
+{
+  const static int on = 1;
+  struct sockaddr_in sa;
+  struct GNUNET_NETWORK_Descriptor *desc;
+
+  memset (&sa, 0, sizeof (sa));
+  sa.sin_port = htons (PORT);
+  desc = GNUNET_NETWORK_socket_socket (AF_INET, SOCK_STREAM, 0);
+  GNUNET_assert (desc != NULL);
+  if (GNUNET_NETWORK_socket_setsockopt (desc, SOL_SOCKET, SO_REUSEADDR, &on, 
sizeof (on)) < 0)
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+                "setsockopt");
+  GNUNET_assert (GNUNET_NETWORK_socket_bind (desc, &sa, sizeof (sa)) >= 0);
+  GNUNET_NETWORK_socket_listen (desc, 5);
+  return desc;
+}
+
+
+static size_t
+send_kilo (void *cls, size_t size, void *buf)
+{
+  int *ok = cls;
+  if (size == 0)
+    {
+#if VERBOSE
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Got the desired timeout!\n");
+#endif
+      GNUNET_assert (buf == NULL);
+      *ok = 0;
+      GNUNET_CONNECTION_destroy (lsock);
+      GNUNET_CONNECTION_destroy (csock);
+      return 0;
+    }
+#if VERBOSE
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending kilo to fill buffer.\n");
+#endif
+  GNUNET_assert (size >= 1024);
+  memset (buf, 42, 1024);
+
+  GNUNET_assert (NULL !=
+                 GNUNET_CONNECTION_notify_transmit_ready (csock,
+                                                       1024,
+                                                       
GNUNET_TIME_UNIT_SECONDS,
+                                                       &send_kilo, cls));
+  return 1024;
+}
+
+
+static void
+task_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+
+  ls = open_listen_socket ();
+  lsock = GNUNET_CONNECTION_create_from_existing (tc->sched, ls, 0);
+  GNUNET_assert (lsock != NULL);
+  csock = GNUNET_CONNECTION_create_from_connect (tc->sched,
+                                                     "localhost", PORT, 1024);
+  GNUNET_assert (csock != NULL);
+  GNUNET_assert (NULL !=
+                 GNUNET_CONNECTION_notify_transmit_ready (csock,
+                                                       1024,
+                                                       
GNUNET_TIME_UNIT_SECONDS,
+                                                       &send_kilo, cls));
+}
+
+
+
+/**
+ * Main method, starts scheduler with task_timeout.
+ */
+static int
+check_timeout ()
+{
+  int ok;
+
+  ok = 1;
+  GNUNET_SCHEDULER_run (&task_timeout, &ok);
+  return ok;
+}
+
+int
+main (int argc, char *argv[])
+{
+  int ret = 0;
+
+  GNUNET_log_setup ("test_connection_timeout",
+#if VERBOSE
+                    "DEBUG",
+#else
+                    "WARNING",
+#endif
+                    NULL);
+  ret += check_timeout ();
+  return ret;
+}
+
+/* end of test_connection_timeout.c */

Copied: gnunet/src/util/test_connection_timeout_no_connect.c (from rev 8876, 
gnunet/src/util/test_network_timeout_no_connect.c)
===================================================================
--- gnunet/src/util/test_connection_timeout_no_connect.c                        
        (rev 0)
+++ gnunet/src/util/test_connection_timeout_no_connect.c        2009-08-29 
19:37:54 UTC (rev 8880)
@@ -0,0 +1,95 @@
+/*
+     This file is part of GNUnet.
+     (C) 2009 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 2, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+/**
+ * @file util/test_connection_timeout_no_connect.c
+ * @brief tests for connection.c, doing timeout which connect failure
+ */
+#include "platform.h"
+#include "gnunet_common.h"
+#include "gnunet_connection_lib.h"
+#include "gnunet_scheduler_lib.h"
+#include "gnunet_time_lib.h"
+
+#define VERBOSE GNUNET_NO
+
+#define PORT 13425
+
+static struct GNUNET_CONNECTION_Handle *csock;
+
+static size_t
+handle_timeout (void *cls, size_t size, void *buf)
+{
+  int *ok = cls;
+#if VERBOSE
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received timeout signal.\n");
+#endif
+
+  GNUNET_assert (size == 0);
+  GNUNET_assert (buf == NULL);
+  *ok = 0;
+  return 0;
+}
+
+
+static void
+task_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  csock = GNUNET_CONNECTION_create_from_connect (tc->sched,
+                                                     "localhost", PORT, 1024);
+  GNUNET_assert (csock != NULL);
+  GNUNET_assert (NULL !=
+                 GNUNET_CONNECTION_notify_transmit_ready (csock,
+                                                       1024,
+                                                       
GNUNET_TIME_UNIT_SECONDS,
+                                                       &handle_timeout, cls));
+}
+
+
+
+/**
+ * Main method, starts scheduler with task_timeout.
+ */
+static int
+check_timeout ()
+{
+  int ok;
+
+  ok = 1;
+  GNUNET_SCHEDULER_run (&task_timeout, &ok);
+  return ok;
+}
+
+int
+main (int argc, char *argv[])
+{
+  int ret = 0;
+
+  GNUNET_log_setup ("test_connection_timeout_no_connect",
+#if VERBOSE
+                    "DEBUG",
+#else
+                    "WARNING",
+#endif
+                    NULL);
+  ret += check_timeout ();
+  return ret;
+}
+
+/* end of test_connection_timeout_no_connect.c */

Copied: gnunet/src/util/test_connection_transmit_cancel.c (from rev 8877, 
gnunet/src/util/test_network_transmit_cancel.c)
===================================================================
--- gnunet/src/util/test_connection_transmit_cancel.c                           
(rev 0)
+++ gnunet/src/util/test_connection_transmit_cancel.c   2009-08-29 19:37:54 UTC 
(rev 8880)
@@ -0,0 +1,97 @@
+/*
+     This file is part of GNUnet.
+     (C) 2009 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 2, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+/**
+ * @file util/test_connection_transmit_cancel.c
+ * @brief tests for connection.c
+ */
+#include "platform.h"
+#include "gnunet_common.h"
+#include "gnunet_connection_lib.h"
+#include "gnunet_scheduler_lib.h"
+#include "gnunet_time_lib.h"
+
+#define VERBOSE GNUNET_NO
+
+#define PORT 12435
+
+
+static size_t
+not_run (void *cls, size_t size, void *buf)
+{
+  GNUNET_assert (0);
+  return 0;
+}
+
+
+static void
+task_transmit_cancel (void *cls,
+                      const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  int *ok = cls;
+  struct GNUNET_CONNECTION_TransmitHandle *th;
+  struct GNUNET_CONNECTION_Handle *csock;
+
+  csock = GNUNET_CONNECTION_create_from_connect (tc->sched,
+                                                     "localhost", PORT, 1024);
+  GNUNET_assert (csock != NULL);
+  th = GNUNET_CONNECTION_notify_transmit_ready (csock,
+                                             12,
+                                             GNUNET_TIME_UNIT_MINUTES,
+                                             &not_run, cls);
+  GNUNET_CONNECTION_notify_transmit_ready_cancel (th);
+  GNUNET_CONNECTION_destroy (csock);
+  *ok = 0;
+}
+
+
+
+
+/**
+ * Main method, starts scheduler with task_timeout.
+ */
+static int
+check_transmit_cancel ()
+{
+  int ok;
+
+  ok = 1;
+  GNUNET_SCHEDULER_run (&task_transmit_cancel, &ok);
+  return ok;
+}
+
+
+int
+main (int argc, char *argv[])
+{
+  int ret = 0;
+
+  GNUNET_log_setup ("test_connection_transmit_cancel",
+#if VERBOSE
+                    "DEBUG",
+#else
+                    "WARNING",
+#endif
+                    NULL);
+  ret += check_transmit_cancel ();
+
+  return ret;
+}
+
+/* end of test_connection_transmit_cancel.c */

Deleted: gnunet/src/util/test_network.c
===================================================================
--- gnunet/src/util/test_network.c      2009-08-29 19:28:38 UTC (rev 8879)
+++ gnunet/src/util/test_network.c      2009-08-29 19:37:54 UTC (rev 8880)
@@ -1,210 +0,0 @@
-/*
-     This file is part of GNUnet.
-     (C) 2009 Christian Grothoff (and other contributing authors)
-
-     GNUnet is free software; you can redistribute it and/or modify
-     it under the terms of the GNU General Public License as published
-     by the Free Software Foundation; either version 2, or (at your
-     option) any later version.
-
-     GNUnet is distributed in the hope that it will be useful, but
-     WITHOUT ANY WARRANTY; without even the implied warranty of
-     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-     General Public License for more details.
-
-     You should have received a copy of the GNU General Public License
-     along with GNUnet; see the file COPYING.  If not, write to the
-     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-     Boston, MA 02111-1307, USA.
-*/
-/**
- * @file util/test_network.c
- * @brief tests for network.c
- */
-#include "platform.h"
-#include "gnunet_common.h"
-#include "gnunet_connection_lib.h"
-#include "gnunet_scheduler_lib.h"
-#include "gnunet_time_lib.h"
-
-#define VERBOSE GNUNET_NO
-
-#define PORT 12435
-
-
-static struct GNUNET_CONNECTION_Handle *csock;
-
-static struct GNUNET_CONNECTION_Handle *asock;
-
-static struct GNUNET_CONNECTION_Handle *lsock;
-
-static size_t sofar;
-
-static int ls;
-
-
-
-/**
- * Create and initialize a listen socket for the server.
- *
- * @return -1 on error, otherwise the listen socket
- */
-static struct GNUNET_NETWORK_Descriptor *
-open_listen_socket ()
-{
-  const static int on = 1;
-  struct sockaddr_in sa;
-  struct GNUNET_NETWORK_Descriptor *desc;
-
-  memset (&sa, 0, sizeof (sa));
-  sa.sin_port = htons (PORT);
-  sa.sin_family = AF_INET;
-  desc = GNUNET_NETWORK_socket_socket (AF_INET, SOCK_STREAM, 0);
-  GNUNET_assert (desc != NULL);
-  if (GNUNET_NETWORK_socket_setsockopt (desc, SOL_SOCKET, SO_REUSEADDR, &on, 
sizeof (on)) < 0)
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
-                "setsockopt");
-  GNUNET_assert (GNUNET_NETWORK_socket_bind (desc, &sa, sizeof (sa)) >= 0);
-  GNUNET_NETWORK_socket_listen (desc, 5);
-  return desc;
-}
-
-static void
-receive_check (void *cls,
-               const void *buf,
-               size_t available,
-               const struct sockaddr *addr, socklen_t addrlen, int errCode)
-{
-  int *ok = cls;
-
-#if VERBOSE
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Receive validates incoming data\n");
-#endif
-  GNUNET_assert (buf != NULL);  /* no timeout */
-  if (0 == memcmp (&"Hello World"[sofar], buf, available))
-    sofar += available;
-  if (sofar < 12)
-    {
-#if VERBOSE
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Receive needs more data\n");
-#endif
-      GNUNET_CONNECTION_receive (asock,
-                              1024,
-                              GNUNET_TIME_relative_multiply
-                              (GNUNET_TIME_UNIT_SECONDS, 5), &receive_check,
-                              cls);
-    }
-  else
-    {
-#if VERBOSE
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                  "Receive closes accepted socket\n");
-#endif
-      *ok = 0;
-      GNUNET_CONNECTION_destroy (asock);
-    }
-}
-
-
-static void
-run_accept (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-#if VERBOSE
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Test accepts connection\n");
-#endif
-  asock = GNUNET_CONNECTION_create_from_accept (tc->sched,
-                                                    NULL, NULL, ls, 1024);
-  GNUNET_assert (asock != NULL);
-  GNUNET_assert (GNUNET_YES == GNUNET_CONNECTION_check (asock));
-#if VERBOSE
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Test destroys listen socket\n");
-#endif
-  GNUNET_CONNECTION_destroy (lsock);
-#if VERBOSE
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Test asks to receive on accepted socket\n");
-#endif
-  GNUNET_CONNECTION_receive (asock,
-                          1024,
-                          GNUNET_TIME_relative_multiply
-                          (GNUNET_TIME_UNIT_SECONDS, 5), &receive_check, cls);
-}
-
-static size_t
-make_hello (void *cls, size_t size, void *buf)
-{
-#if VERBOSE
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Test prepares to transmit on connect socket\n");
-#endif
-  GNUNET_assert (size >= 12);
-  strcpy ((char *) buf, "Hello World");
-  return 12;
-}
-
-static void
-task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  ls = open_listen_socket ();
-  lsock = GNUNET_CONNECTION_create_from_existing (tc->sched, ls, 0);
-  GNUNET_assert (lsock != NULL);
-  csock = GNUNET_CONNECTION_create_from_connect (tc->sched,
-                                                     "localhost", PORT, 1024);
-  GNUNET_assert (csock != NULL);
-#if VERBOSE
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Test asks for write notification\n");
-#endif
-  GNUNET_assert (NULL !=
-                 GNUNET_CONNECTION_notify_transmit_ready (csock,
-                                                       12,
-                                                       
GNUNET_TIME_UNIT_SECONDS,
-                                                       &make_hello, NULL));
-#if VERBOSE
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Test destroys client socket\n");
-#endif
-  GNUNET_CONNECTION_destroy (csock);
-#if VERBOSE
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Test prepares to accept\n");
-#endif
-  GNUNET_SCHEDULER_add_read_net (tc->sched,
-                             GNUNET_NO,
-                             GNUNET_SCHEDULER_PRIORITY_HIGH,
-                             GNUNET_SCHEDULER_NO_TASK,
-                             GNUNET_TIME_UNIT_FOREVER_REL,
-                             ls, &run_accept, cls);
-}
-
-
-/**
- * Main method, starts scheduler with task ,
- * checks that "ok" is correct at the end.
- */
-static int
-check ()
-{
-  int ok;
-
-  ok = 1;
-  GNUNET_SCHEDULER_run (&task, &ok);
-  return ok;
-}
-
-
-
-int
-main (int argc, char *argv[])
-{
-  int ret = 0;
-
-  GNUNET_log_setup ("test_network",
-#if VERBOSE
-                    "DEBUG",
-#else
-                    "WARNING",
-#endif
-                    NULL);
-  ret += check ();
-  return ret;
-}
-
-/* end of test_network.c */

Deleted: gnunet/src/util/test_network_addressing.c
===================================================================
--- gnunet/src/util/test_network_addressing.c   2009-08-29 19:28:38 UTC (rev 
8879)
+++ gnunet/src/util/test_network_addressing.c   2009-08-29 19:37:54 UTC (rev 
8880)
@@ -1,200 +0,0 @@
-/*
-     This file is part of GNUnet.
-     (C) 2009 Christian Grothoff (and other contributing authors)
-
-     GNUnet is free software; you can redistribute it and/or modify
-     it under the terms of the GNU General Public License as published
-     by the Free Software Foundation; either version 2, or (at your
-     option) any later version.
-
-     GNUnet is distributed in the hope that it will be useful, but
-     WITHOUT ANY WARRANTY; without even the implied warranty of
-     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-     General Public License for more details.
-
-     You should have received a copy of the GNU General Public License
-     along with GNUnet; see the file COPYING.  If not, write to the
-     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-     Boston, MA 02111-1307, USA.
-*/
-/**
- * @file util/test_network_addressing.c
- * @brief tests for network.c
- */
-#include "platform.h"
-#include "gnunet_common.h"
-#include "gnunet_connection_lib.h"
-#include "gnunet_scheduler_lib.h"
-#include "gnunet_time_lib.h"
-
-#define VERBOSE GNUNET_NO
-
-#define PORT 12435
-
-
-static struct GNUNET_CONNECTION_Handle *csock;
-
-static struct GNUNET_CONNECTION_Handle *asock;
-
-static struct GNUNET_CONNECTION_Handle *lsock;
-
-static size_t sofar;
-
-static struct GNUNET_NETWORK_Descriptor *ls;
-
-
-
-/**
- * Create and initialize a listen socket for the server.
- *
- * @return NULL on error, otherwise the listen socket
- */
-static struct GNUNET_NETWORK_Descriptor *
-open_listen_socket ()
-{
-  const static int on = 1;
-  struct sockaddr_in sa;
-  struct GNUNET_NETWORK_Descriptor *desc;
-
-  memset (&sa, 0, sizeof (sa));
-  sa.sin_port = htons (PORT);
-  desc = GNUNET_NETWORK_socket_socket (AF_INET, SOCK_STREAM, 0);
-  GNUNET_assert (desc != 0);
-  if (GNUNET_NETWORK_socket_setsockopt (desc, SOL_SOCKET, SO_REUSEADDR, &on, 
sizeof (on)) < 0)
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
-                "setsockopt");
-  GNUNET_assert (GNUNET_NETWORK_socket_bind (desc, &sa, sizeof (sa)) >= 0);
-  GNUNET_NETWORK_socket_listen (desc, 5);
-  return desc;
-}
-
-
-static void
-receive_check (void *cls,
-               const void *buf,
-               size_t available,
-               const struct sockaddr *addr, socklen_t addrlen, int errCode)
-{
-  int *ok = cls;
-
-  GNUNET_assert (buf != NULL);  /* no timeout */
-  if (0 == memcmp (&"Hello World"[sofar], buf, available))
-    sofar += available;
-  if (sofar < 12)
-    {
-      GNUNET_CONNECTION_receive (asock,
-                              1024,
-                              GNUNET_TIME_relative_multiply
-                              (GNUNET_TIME_UNIT_SECONDS, 5), &receive_check,
-                              cls);
-    }
-  else
-    {
-      *ok = 0;
-      GNUNET_CONNECTION_destroy (asock);
-    }
-}
-
-
-static void
-run_accept (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  void *addr;
-  size_t alen;
-  struct sockaddr_in *v4;
-  struct sockaddr_in expect;
-
-  asock = GNUNET_CONNECTION_create_from_accept (tc->sched,
-                                                    NULL, NULL, ls, 1024);
-  GNUNET_assert (asock != NULL);
-  GNUNET_assert (GNUNET_YES == GNUNET_CONNECTION_check (asock));
-  GNUNET_assert (GNUNET_OK ==
-                 GNUNET_CONNECTION_get_address (asock, &addr, &alen));
-  GNUNET_assert (alen == sizeof (struct sockaddr_in));
-  v4 = addr;
-  memset (&expect, 0, sizeof (expect));
-  expect.sin_family = AF_INET;
-  expect.sin_port = v4->sin_port;
-  expect.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
-  GNUNET_assert (0 == memcmp (&expect, v4, alen));
-  GNUNET_free (addr);
-  GNUNET_CONNECTION_destroy (lsock);
-  GNUNET_CONNECTION_receive (asock,
-                          1024,
-                          GNUNET_TIME_relative_multiply
-                          (GNUNET_TIME_UNIT_SECONDS, 5), &receive_check, cls);
-}
-
-static size_t
-make_hello (void *cls, size_t size, void *buf)
-{
-  GNUNET_assert (size >= 12);
-  strcpy ((char *) buf, "Hello World");
-  return 12;
-}
-
-static void
-task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  struct sockaddr_in v4;
-  ls = open_listen_socket ();
-  lsock = GNUNET_CONNECTION_create_from_existing (tc->sched, ls, 0);
-  GNUNET_assert (lsock != NULL);
-
-  v4.sin_family = AF_INET;
-  v4.sin_port = htons (PORT);
-  v4.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
-  csock = GNUNET_CONNECTION_create_from_sockaddr (tc->sched,
-                                                      AF_INET,
-                                                      (const struct sockaddr
-                                                       *) &v4, sizeof (v4),
-                                                      1024);
-  GNUNET_assert (csock != NULL);
-  GNUNET_assert (NULL !=
-                 GNUNET_CONNECTION_notify_transmit_ready (csock,
-                                                       12,
-                                                       
GNUNET_TIME_UNIT_SECONDS,
-                                                       &make_hello, NULL));
-  GNUNET_CONNECTION_destroy (csock);
-  GNUNET_SCHEDULER_add_read_net (tc->sched,
-                             GNUNET_NO,
-                             GNUNET_SCHEDULER_PRIORITY_HIGH,
-                             GNUNET_SCHEDULER_NO_TASK,
-                             GNUNET_TIME_UNIT_FOREVER_REL,
-                             ls, &run_accept, cls);
-}
-
-
-/**
- * Main method, starts scheduler with task ,
- * checks that "ok" is correct at the end.
- */
-static int
-check ()
-{
-  int ok;
-
-  ok = 1;
-  GNUNET_SCHEDULER_run (&task, &ok);
-  return ok;
-}
-
-
-
-int
-main (int argc, char *argv[])
-{
-  int ret = 0;
-
-  GNUNET_log_setup ("test_network_addressing", 
-#if VERBOSE
-                   "DEBUG",
-#else
-                   "WARNING", 
-#endif
-                   NULL);
-  ret += check ();
-  return ret;
-}
-
-/* end of test_network_addressing.c */

Deleted: gnunet/src/util/test_network_receive_cancel.c
===================================================================
--- gnunet/src/util/test_network_receive_cancel.c       2009-08-29 19:28:38 UTC 
(rev 8879)
+++ gnunet/src/util/test_network_receive_cancel.c       2009-08-29 19:37:54 UTC 
(rev 8880)
@@ -1,164 +0,0 @@
-/*
-     This file is part of GNUnet.
-     (C) 2009 Christian Grothoff (and other contributing authors)
-
-     GNUnet is free software; you can redistribute it and/or modify
-     it under the terms of the GNU General Public License as published
-     by the Free Software Foundation; either version 2, or (at your
-     option) any later version.
-
-     GNUnet is distributed in the hope that it will be useful, but
-     WITHOUT ANY WARRANTY; without even the implied warranty of
-     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-     General Public License for more details.
-
-     You should have received a copy of the GNU General Public License
-     along with GNUnet; see the file COPYING.  If not, write to the
-     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-     Boston, MA 02111-1307, USA.
-*/
-/**
- * @file util/test_network_receive_cancel.c
- * @brief tests for network.c
- */
-#include "platform.h"
-#include "gnunet_common.h"
-#include "gnunet_connection_lib.h"
-#include "gnunet_scheduler_lib.h"
-#include "gnunet_time_lib.h"
-
-#define VERBOSE GNUNET_NO
-
-#define PORT 12435
-
-
-static struct GNUNET_CONNECTION_Handle *csock;
-
-static struct GNUNET_CONNECTION_Handle *asock;
-
-static struct GNUNET_CONNECTION_Handle *lsock;
-
-static struct GNUNET_NETWORK_Descriptor *ls;
-
-static GNUNET_SCHEDULER_TaskIdentifier receive_task;
-
-
-
-
-/**
- * Create and initialize a listen socket for the server.
- *
- * @return NULL on error, otherwise the listen socket
- */
-static struct GNUNET_NETWORK_Descriptor *
-open_listen_socket ()
-{
-  const static int on = 1;
-  struct sockaddr_in sa;
-  struct GNUNET_NETWORK_Descriptor *desc;
-
-  memset (&sa, 0, sizeof (sa));
-  sa.sin_port = htons (PORT);
-  desc = GNUNET_NETWORK_socket_socket (AF_INET, SOCK_STREAM, 0);
-  GNUNET_assert (desc != NULL);
-  if (GNUNET_NETWORK_socket_setsockopt (desc, SOL_SOCKET, SO_REUSEADDR, &on, 
sizeof (on)) < 0)
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
-                "setsockopt");
-  GNUNET_assert (GNUNET_NETWORK_socket_bind (desc, &sa, sizeof (sa)) >= 0);
-  GNUNET_NETWORK_socket_listen (desc, 5);
-  return desc;
-}
-
-
-
-static void
-dead_receive (void *cls,
-              const void *buf,
-              size_t available,
-              const struct sockaddr *addr, socklen_t addrlen, int errCode)
-{
-  GNUNET_assert (0);
-}
-
-
-static void
-run_accept_cancel (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-
-  asock = GNUNET_CONNECTION_create_from_accept (tc->sched,
-                                                    NULL, NULL, ls, 1024);
-  GNUNET_assert (asock != NULL);
-  GNUNET_assert (GNUNET_YES == GNUNET_CONNECTION_check (asock));
-  GNUNET_CONNECTION_destroy (lsock);
-  receive_task
-    = GNUNET_CONNECTION_receive (asock,
-                              1024,
-                              GNUNET_TIME_relative_multiply
-                              (GNUNET_TIME_UNIT_SECONDS, 5), &dead_receive,
-                              cls);
-}
-
-
-static void
-receive_cancel_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  int *ok = cls;
-  GNUNET_CONNECTION_receive_cancel (asock, receive_task);
-  GNUNET_CONNECTION_destroy (csock);
-  GNUNET_CONNECTION_destroy (asock);
-  *ok = 0;
-}
-
-
-
-static void
-task_receive_cancel (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  ls = open_listen_socket ();
-  lsock = GNUNET_CONNECTION_create_from_existing (tc->sched, ls, 0);
-  GNUNET_assert (lsock != NULL);
-  csock = GNUNET_CONNECTION_create_from_connect (tc->sched,
-                                                     "localhost", PORT, 1024);
-  GNUNET_assert (csock != NULL);
-  GNUNET_SCHEDULER_add_read_net (tc->sched,
-                             GNUNET_NO,
-                             GNUNET_SCHEDULER_PRIORITY_HIGH,
-                             GNUNET_SCHEDULER_NO_TASK,
-                             GNUNET_TIME_UNIT_FOREVER_REL,
-                             ls, &run_accept_cancel, cls);
-  GNUNET_SCHEDULER_add_delayed (tc->sched,
-                                GNUNET_NO,
-                                GNUNET_SCHEDULER_PRIORITY_KEEP,
-                                GNUNET_SCHEDULER_NO_TASK,
-                                GNUNET_TIME_UNIT_SECONDS,
-                                &receive_cancel_task, cls);
-}
-
-
-
-/**
- * Main method, starts scheduler with task_timeout.
- */
-static int
-check_receive_cancel ()
-{
-  int ok;
-
-  ok = 1;
-  GNUNET_SCHEDULER_run (&task_receive_cancel, &ok);
-  return ok;
-}
-
-
-int
-main (int argc, char *argv[])
-{
-  int ret = 0;
-
-  GNUNET_log_setup ("test_network_receive_cancel", "WARNING", NULL);
-  ret += check_receive_cancel ();
-
-  return ret;
-}
-
-/* end of test_network.c */

Deleted: gnunet/src/util/test_network_timeout.c
===================================================================
--- gnunet/src/util/test_network_timeout.c      2009-08-29 19:28:38 UTC (rev 
8879)
+++ gnunet/src/util/test_network_timeout.c      2009-08-29 19:37:54 UTC (rev 
8880)
@@ -1,144 +0,0 @@
-/*
-     This file is part of GNUnet.
-     (C) 2009 Christian Grothoff (and other contributing authors)
-
-     GNUnet is free software; you can redistribute it and/or modify
-     it under the terms of the GNU General Public License as published
-     by the Free Software Foundation; either version 2, or (at your
-     option) any later version.
-
-     GNUnet is distributed in the hope that it will be useful, but
-     WITHOUT ANY WARRANTY; without even the implied warranty of
-     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-     General Public License for more details.
-
-     You should have received a copy of the GNU General Public License
-     along with GNUnet; see the file COPYING.  If not, write to the
-     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-     Boston, MA 02111-1307, USA.
-*/
-/**
- * @file util/test_network_timeout.c
- * @brief tests for network.c
- */
-#include "platform.h"
-#include "gnunet_common.h"
-#include "gnunet_connection_lib.h"
-#include "gnunet_scheduler_lib.h"
-#include "gnunet_time_lib.h"
-
-#define VERBOSE GNUNET_NO
-
-#define PORT 12435
-
-static struct GNUNET_CONNECTION_Handle *csock;
-
-static struct GNUNET_CONNECTION_Handle *lsock;
-
-static struct GNUNET_NETWORK_Descriptor *ls;
-
-
-/**
- * Create and initialize a listen socket for the server.
- *
- * @return NULL on error, otherwise the listen socket
- */
-static struct GNUNET_NETWORK_Descriptor *
-open_listen_socket ()
-{
-  const static int on = 1;
-  struct sockaddr_in sa;
-  struct GNUNET_NETWORK_Descriptor *desc;
-
-  memset (&sa, 0, sizeof (sa));
-  sa.sin_port = htons (PORT);
-  desc = GNUNET_NETWORK_socket_socket (AF_INET, SOCK_STREAM, 0);
-  GNUNET_assert (desc != NULL);
-  if (GNUNET_NETWORK_socket_setsockopt (desc, SOL_SOCKET, SO_REUSEADDR, &on, 
sizeof (on)) < 0)
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
-                "setsockopt");
-  GNUNET_assert (GNUNET_NETWORK_socket_bind (desc, &sa, sizeof (sa)) >= 0);
-  GNUNET_NETWORK_socket_listen (desc, 5);
-  return desc;
-}
-
-
-static size_t
-send_kilo (void *cls, size_t size, void *buf)
-{
-  int *ok = cls;
-  if (size == 0)
-    {
-#if VERBOSE
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Got the desired timeout!\n");
-#endif
-      GNUNET_assert (buf == NULL);
-      *ok = 0;
-      GNUNET_CONNECTION_destroy (lsock);
-      GNUNET_CONNECTION_destroy (csock);
-      return 0;
-    }
-#if VERBOSE
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending kilo to fill buffer.\n");
-#endif
-  GNUNET_assert (size >= 1024);
-  memset (buf, 42, 1024);
-
-  GNUNET_assert (NULL !=
-                 GNUNET_CONNECTION_notify_transmit_ready (csock,
-                                                       1024,
-                                                       
GNUNET_TIME_UNIT_SECONDS,
-                                                       &send_kilo, cls));
-  return 1024;
-}
-
-
-static void
-task_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-
-  ls = open_listen_socket ();
-  lsock = GNUNET_CONNECTION_create_from_existing (tc->sched, ls, 0);
-  GNUNET_assert (lsock != NULL);
-  csock = GNUNET_CONNECTION_create_from_connect (tc->sched,
-                                                     "localhost", PORT, 1024);
-  GNUNET_assert (csock != NULL);
-  GNUNET_assert (NULL !=
-                 GNUNET_CONNECTION_notify_transmit_ready (csock,
-                                                       1024,
-                                                       
GNUNET_TIME_UNIT_SECONDS,
-                                                       &send_kilo, cls));
-}
-
-
-
-/**
- * Main method, starts scheduler with task_timeout.
- */
-static int
-check_timeout ()
-{
-  int ok;
-
-  ok = 1;
-  GNUNET_SCHEDULER_run (&task_timeout, &ok);
-  return ok;
-}
-
-int
-main (int argc, char *argv[])
-{
-  int ret = 0;
-
-  GNUNET_log_setup ("test_network_timeout",
-#if VERBOSE
-                    "DEBUG",
-#else
-                    "WARNING",
-#endif
-                    NULL);
-  ret += check_timeout ();
-  return ret;
-}
-
-/* end of test_network_timeout.c */

Deleted: gnunet/src/util/test_network_timeout_no_connect.c
===================================================================
--- gnunet/src/util/test_network_timeout_no_connect.c   2009-08-29 19:28:38 UTC 
(rev 8879)
+++ gnunet/src/util/test_network_timeout_no_connect.c   2009-08-29 19:37:54 UTC 
(rev 8880)
@@ -1,95 +0,0 @@
-/*
-     This file is part of GNUnet.
-     (C) 2009 Christian Grothoff (and other contributing authors)
-
-     GNUnet is free software; you can redistribute it and/or modify
-     it under the terms of the GNU General Public License as published
-     by the Free Software Foundation; either version 2, or (at your
-     option) any later version.
-
-     GNUnet is distributed in the hope that it will be useful, but
-     WITHOUT ANY WARRANTY; without even the implied warranty of
-     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-     General Public License for more details.
-
-     You should have received a copy of the GNU General Public License
-     along with GNUnet; see the file COPYING.  If not, write to the
-     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-     Boston, MA 02111-1307, USA.
-*/
-/**
- * @file util/test_network_timeout.c
- * @brief tests for network.c, doing timeout which connect failure
- */
-#include "platform.h"
-#include "gnunet_common.h"
-#include "gnunet_connection_lib.h"
-#include "gnunet_scheduler_lib.h"
-#include "gnunet_time_lib.h"
-
-#define VERBOSE GNUNET_NO
-
-#define PORT 13425
-
-static struct GNUNET_CONNECTION_Handle *csock;
-
-static size_t
-handle_timeout (void *cls, size_t size, void *buf)
-{
-  int *ok = cls;
-#if VERBOSE
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received timeout signal.\n");
-#endif
-
-  GNUNET_assert (size == 0);
-  GNUNET_assert (buf == NULL);
-  *ok = 0;
-  return 0;
-}
-
-
-static void
-task_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  csock = GNUNET_CONNECTION_create_from_connect (tc->sched,
-                                                     "localhost", PORT, 1024);
-  GNUNET_assert (csock != NULL);
-  GNUNET_assert (NULL !=
-                 GNUNET_CONNECTION_notify_transmit_ready (csock,
-                                                       1024,
-                                                       
GNUNET_TIME_UNIT_SECONDS,
-                                                       &handle_timeout, cls));
-}
-
-
-
-/**
- * Main method, starts scheduler with task_timeout.
- */
-static int
-check_timeout ()
-{
-  int ok;
-
-  ok = 1;
-  GNUNET_SCHEDULER_run (&task_timeout, &ok);
-  return ok;
-}
-
-int
-main (int argc, char *argv[])
-{
-  int ret = 0;
-
-  GNUNET_log_setup ("test_network_timeout_no_connect",
-#if VERBOSE
-                    "DEBUG",
-#else
-                    "WARNING",
-#endif
-                    NULL);
-  ret += check_timeout ();
-  return ret;
-}
-
-/* end of test_network_timeout_no_connect.c */

Deleted: gnunet/src/util/test_network_transmit_cancel.c
===================================================================
--- gnunet/src/util/test_network_transmit_cancel.c      2009-08-29 19:28:38 UTC 
(rev 8879)
+++ gnunet/src/util/test_network_transmit_cancel.c      2009-08-29 19:37:54 UTC 
(rev 8880)
@@ -1,97 +0,0 @@
-/*
-     This file is part of GNUnet.
-     (C) 2009 Christian Grothoff (and other contributing authors)
-
-     GNUnet is free software; you can redistribute it and/or modify
-     it under the terms of the GNU General Public License as published
-     by the Free Software Foundation; either version 2, or (at your
-     option) any later version.
-
-     GNUnet is distributed in the hope that it will be useful, but
-     WITHOUT ANY WARRANTY; without even the implied warranty of
-     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-     General Public License for more details.
-
-     You should have received a copy of the GNU General Public License
-     along with GNUnet; see the file COPYING.  If not, write to the
-     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-     Boston, MA 02111-1307, USA.
-*/
-/**
- * @file util/test_network_transmit_cancel.c
- * @brief tests for network.c
- */
-#include "platform.h"
-#include "gnunet_common.h"
-#include "gnunet_connection_lib.h"
-#include "gnunet_scheduler_lib.h"
-#include "gnunet_time_lib.h"
-
-#define VERBOSE GNUNET_NO
-
-#define PORT 12435
-
-
-static size_t
-not_run (void *cls, size_t size, void *buf)
-{
-  GNUNET_assert (0);
-  return 0;
-}
-
-
-static void
-task_transmit_cancel (void *cls,
-                      const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  int *ok = cls;
-  struct GNUNET_CONNECTION_TransmitHandle *th;
-  struct GNUNET_CONNECTION_Handle *csock;
-
-  csock = GNUNET_CONNECTION_create_from_connect (tc->sched,
-                                                     "localhost", PORT, 1024);
-  GNUNET_assert (csock != NULL);
-  th = GNUNET_CONNECTION_notify_transmit_ready (csock,
-                                             12,
-                                             GNUNET_TIME_UNIT_MINUTES,
-                                             &not_run, cls);
-  GNUNET_CONNECTION_notify_transmit_ready_cancel (th);
-  GNUNET_CONNECTION_destroy (csock);
-  *ok = 0;
-}
-
-
-
-
-/**
- * Main method, starts scheduler with task_timeout.
- */
-static int
-check_transmit_cancel ()
-{
-  int ok;
-
-  ok = 1;
-  GNUNET_SCHEDULER_run (&task_transmit_cancel, &ok);
-  return ok;
-}
-
-
-int
-main (int argc, char *argv[])
-{
-  int ret = 0;
-
-  GNUNET_log_setup ("test_network_transmit_cancel",
-#if VERBOSE
-                    "DEBUG",
-#else
-                    "WARNING",
-#endif
-                    NULL);
-  ret += check_transmit_cancel ();
-
-  return ret;
-}
-
-/* end of test_network_transmit_cancel.c */





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