HP Rp7410 BSD Sockets Interface Programmer's Guide - Page 128

Using UNIX Domain Stream Sockets Writing the Server Process Writing the Server Process This section explains the calls your server process must make to connect with and serve a client process. Creating a Socket The server process must call socket to create a communication endpoint. socket and its parameters are described in the following table. Include files: System call: #include #include s = socket(af, type, protocol) int af, type, protocol; Parameter Description of Contents INPUT Value af type protocol address family socket type underlying protocol to be used AF_UNIX SOCK_STREAM 0 (default) Function result: socket number (HP-UX file descriptor), -1 if failure occurs. Example: s = socket (AF_UNIX, SOCK_STREAM, 0); The socket number returned is the socket descriptor for the newly created socket. This number is an HP-UX file descriptor and can be used for reading, writing or any standard file system calls after a BSD Sockets connection is established. A socket descriptor is treated like a file descriptor for an open file. When to Create Sockets The server process should create sockets before any other BSD Sockets system calls. Refer to the socket(2) man page for more information on socket. 128 Chapter 6