1. That doesn't indicate whether it's big endian or little as Solaris runs on both SPARC and x86.

2. Put "perror("connect") in the path immediately following a failed connect.

3. Do netstat -a on the target machine and confirm that there really is a LISTEN on the port you are trying to connect to.

4. before the connect() do the following

printf("connect(%s:%d)\n",
inet_ntoa(sad.sin_addr),ntohs(sad.sin_port));