bind() binds the name given in address to the socket described by socket, which must be a valid socket descriptor created with socket().
The address parameter is either an IP address in dotted-quad notation (e.g. 127.0.0.1), if the socket is of the AF_INET family; or the pathname of a Unix-domain socket, if the socket family is AF_UNIX.
The port parameter is only used when connecting to an AF_INET socket, and designates the port on the remote host to which a connection should be made.
Returns zero on success, or a negative error code on failure. This code may be passed to strerror() to get a textual explanation of the error.