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[lwip-users] Re: sntp netconn

From: Martin Velek
Subject: [lwip-users] Re: sntp netconn
Date: Fri, 9 Oct 2009 14:49:36 +0200


here is a update of sntp_netconn.c. There was a bug, if some of "if
statement" was false before calling "receiveUDPNetBuf =
netconn_recv(sendUDPNetConn);", it could lead to crash because at the
end was "netbuf_delete(receiveUDPNetBuf);"  - receiveUDPNetBuf was
uninitialized with random value. The same case was also for
"netbuf_delete(sendUDPNetBuf), netconn_delete(sendUDPNetConn)"

I am sorry.


2009/10/8 Martin Velek <address@hidden>:
> Hi,
> if you are insterested in, here is a rewritten contrib socket sntp
> client example to use netconn api.
> I have test it against WinXP with lwip 1.3.1 on LM3S9b92. You have to
> define SNTP_SERVER_ADDRESS variable and  LWIP_SO_RCVTIMEO to enable
> UDP timeout.
> A piece of customization(e.g. remove calling syslog function, improve
> english) should be done.
> Martin

Attachment: sntp_netconn.c
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