.TH socket_send4 3 .SH NAME socket_send4 \- send a UDP datagram .SH SYNTAX .B #include int \fBsocket_send4\fP(int \fIs\fR, const char* \fIbuf\fR, unsigned int \fIlen\fR, const char \fIip\fR[4],uint16 \fIport\fR); .SH DESCRIPTION socket_send4 sends \fIlen\fR bytes starting at \fIbuf\fR in a UDP datagram over the socket \fIs\fR to UDP port \fIport\fR on IP address \fIip\fR. You can call socket_send4 without calling socket_bind4. This has the effect as first calling socket_bind4 with IP address 0.0.0.0 and port 0. .SH RETURN VALUE socket_send4 returns 0 if the datagram was sent successfully. If not, it returns -1 and sets errno appropriately. .SH EXAMPLE #include int \fIs\fR; char \fIip\fR[4]; uint16 \fIp\fR; \fIs\fR = socket_tcp4(); socket_bind4(s,ip,p); socket_send4(s,"hello, world",12,ip,p); .SH "SEE ALSO" socket_send6(3)