Program received signal SIGPIPE, Broken pipe

Question

I write a client program based on posix sockets. The program creates multiple threads and is going to lock the server. But during debug in gdb time the program gives an info

Answer 1

I sort of experienced the same problem and it let me to this SO post. I got sporadic SIGPIPE signals causing crashes of my fastcgi C program run by nginx. I tried to signal(SIGPIPE, SIG_IGN); without luck, it kept crashing.

The reason was that nginx's temp dir had a permission problem. Fixing the permissions solved the SIGPIPE problem. Details here on how to fix and more here.