SYNTAX
#include "socket_if.h"
int socket_recv(int s, const char* buf, unsigned int len,
const char ip[16], uint16 *port, uint32 *scope_id);
DESCRIPTION
socket_recv reads len bytes starting at buf in a UDP datagram over the
socket s while providing information about the remote IP address ip and
the UDP port and the perhaps scope_id of the receiving interface.
You can call socket_recv without calling socket_bind. This has the
effect as first calling socket_bind with IP address :: and port 0.
RETURN VALUE
socket_recv returns 0, otherwise -1 and sets errno appropriately.
EXAMPLE
#include <socket_if.h>
#include <ip.h>
int s;
char localip[16];
char remoteip[16];
uint16 p, port;
uint32 scope_id;
unsigned int len;
int r;
char buf[MTUSIZE+1];
s = socket_udp();
socket_bind_reuse(s,localip,p,0);
r = socket_recv(s,buf,len,remoteip,&port,&scope_id);
SEE ALSO
socket_if(3), socket_info(3), socket_bind(3), socket_connect(3)
socket_send(3), socket_setup(3), socket_tcp(3), socket_udp(3)
3 qlibs:(socket_recv)
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