[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#31903: 27.0.50; Server sockets with :nowait no longer work
From: |
Noam Postavsky |
Subject: |
bug#31903: 27.0.50; Server sockets with :nowait no longer work |
Date: |
Thu, 05 Jul 2018 20:13:14 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) |
tags 31903 + patch
quit
Eli Zaretskii <eliz@gnu.org> writes:
>> From: Noam Postavsky <npostavs@gmail.com>
>> Date: Sun, 01 Jul 2018 11:48:45 -0400
>> Cc: Lars Ingebrigtsen <larsi@gnus.org>, 31903@debbugs.gnu.org
>>
>> Helmut Eller <eller.helmut@gmail.com> writes:
>>
>> > I'm not sure whether :nowait is supposed to work with server sockets,
>> > but this used to work in Emacs 25. Either way, the error message looks
>> > pretty wrong.
>>
>> As far as I can tell, Emacs 25 just ignores :nowait when :server is
>> passed. We could change Emacs 26 do that as well, or we just make the
>> error official but give a more a sensible error message when passed both
>> :nowait and :server.
>
> Unless someone protests within the next few days, I think I prefer the
> latter alternative.
Okay, here is the patch for that, I will push to emacs-26 in a few days.
>From a2ec0e58ab979b0a64a097ff0880cb7509d8aced Mon Sep 17 00:00:00 2001
From: Noam Postavsky <npostavs@gmail.com>
Date: Thu, 5 Jul 2018 19:37:28 -0400
Subject: [PATCH v1] Explicitly reject :server and :nowait (Bug#31903)
* src/process.c (Fmake_network_process): Explicitly check for and
signal an error when passed both :server and :nowait non-nil. In
Emacs 25, :nowait would be ignored in this case, but as of Emacs 26.1
this gives an error, albeit an unclear one. Also remove obsolete
comment regarding configurations lacking non-blocking mode, the
corresponding code was removed in 2012-11-17 "Assume POSIX 1003.1-1988
or later for fcntl.h."
---
src/process.c | 26 +++++++++++---------------
1 file changed, 11 insertions(+), 15 deletions(-)
diff --git a/src/process.c b/src/process.c
index 7f6ea1261e..4d7a735652 100644
--- a/src/process.c
+++ b/src/process.c
@@ -3890,12 +3890,15 @@ failed) connections may be logged in the server
process's buffer.
filter = Fplist_get (contact, QCfilter);
sentinel = Fplist_get (contact, QCsentinel);
use_external_socket_p = Fplist_get (contact, QCuse_external_socket);
+ Lisp_Object server = Fplist_get (contact, QCserver);
+ bool nowait = !NILP (Fplist_get (contact, QCnowait));
+ if (!NILP (server) && nowait)
+ error ("`:server' is incompatible with `:nowait'");
CHECK_STRING (name);
/* :local ADDRESS or :remote ADDRESS */
- tem = Fplist_get (contact, QCserver);
- if (NILP (tem))
+ if (!NILP (server))
address = Fplist_get (contact, QCremote);
else
address = Fplist_get (contact, QClocal);
@@ -4009,7 +4012,7 @@ failed) connections may be logged in the server process's
buffer.
}
#ifdef HAVE_GETADDRINFO_A
- if (!NILP (host) && !NILP (Fplist_get (contact, QCnowait)))
+ if (!NILP (host) && nowait)
{
ptrdiff_t hostlen = SBYTES (host);
struct req
@@ -4154,20 +4157,13 @@ failed) connections may be logged in the server
process's buffer.
set_network_socket_coding_system (proc, host, service, name);
- /* :server BOOL */
- tem = Fplist_get (contact, QCserver);
- if (!NILP (tem))
- {
- /* Don't support network sockets when non-blocking mode is
- not available, since a blocked Emacs is not useful. */
- p->is_server = true;
- if (TYPE_RANGED_INTEGERP (int, tem))
- p->backlog = XINT (tem);
- }
+ /* :server QLEN */
+ p->is_server = !NILP (server);
+ if (TYPE_RANGED_INTEGERP (int, server))
+ p->backlog = XINT (server);
/* :nowait BOOL */
- if (!p->is_server && socktype != SOCK_DGRAM
- && !NILP (Fplist_get (contact, QCnowait)))
+ if (!p->is_server && socktype != SOCK_DGRAM && nowait)
p->is_non_blocking_client = true;
bool postpone_connection = false;
--
2.11.0