[ECOS] help in tcp/ip stack !!!

["wangwei" <wangw at start dot com dot cn>]

Hi,all
help me !!
I make a tcp server in ecos. when client connect with it , appliaction
dynamically create a thread to communicate with client.
the client is running in linux, and can be run in background .
At normal, the server can running stably.
When I make a shell to run lots of client program in background,more than 30
clients,the server in ecos give "EXH 4" error.
In this application, My memory in ecos is more than 3M ,there is enough
memory for malloc. And when thread which run server program is ended, the
memory it used can be free .So I think memory cann't cause this problem.

I had met the "EXH 4" error before . When I try ipaq nanox package in ecos ,
it call nanosleep() in a no posix thread , and cause a "EXH 4" error.
so I suspect it is caused by the same reason .but I can't find out .

The program is in attachment . Does anybody read it and help me !!
thanks.

tcp_test.c

my_thread.h