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Re: [lwip-users] tcp connection problem

From: Janusz U.
Subject: Re: [lwip-users] tcp connection problem
Date: Tue, 5 Sep 2006 22:40:07 +0200

The problem was solved by changing -Os to -O1 or -O2 in arm gcc compiler and not enough stack size of tasks. Similar problem is with -O0 - then OS crashed immediately.

best rgs

----- Original Message ----- From: "Kieran Mansley" <address@hidden>
To: "Mailing list for lwIP users" <address@hidden>
Sent: Thursday, August 31, 2006 3:12 PM
Subject: Re: [lwip-users] tcp connection problem

On Thu, 2006-08-31 at 15:03 +0200, address@hidden wrote:

I am using FreeRTOS 4.1.0 - OS, lwIP 1.1.1 and ppp. PPP, IP, ICMP (ping) work fine and is stable I hope. I have problem with TCP. I make http server. Ather telnet ip 80 connection is made (TCP_DEBUG: TCP connection established ...->80) and then OS crashes. I did analise => OS is halt on TCP_EVENT_ACCEPT(pcb, ERR_OK, err); in tcp_in.c (tcp_process). Have you any ideas?

Sounds like it's having some problem dereferencing the pointer to the
accept callback.  This callback is called whenever a new connection is


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