HP Rp7410 BSD Sockets Interface Programmer's Guide - Page 155

Using UNIX Domain Datagram Sockets Sending and Receiving Messages Sending and Receiving Messages The sendto and recvfrom (or sendmsg and recvmsg) system calls are usually used to transmit and receive messages with datagram sockets. Sending Messages Use sendto or sendmsg to send messages. sendmsg is similar to sendto, except sendmsg allows the send data to be gathered from several buffers. sendto and its parameters are described in the following table. Include files: System call: #include #include #include count = sendto(s, msg, len, flags, to, tolen) int s; char *msg; int len, flags; struct sockaddr_un *to; int tolen; Parameter Description of Contents INPUT Value s msg len flags to tolen socket descriptor of local socket socket descriptor of socket that is sending the message pointer to data buffer pointer to data to be sent size of data buffer size of msg settings for optional flags 0 (no options are currently supported) address of recipient socket pointer to the socket address that message should be sent to size of to length of address structure that to points to Chapter 7 155