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Section: Misc. Reference Manual Pages (socket_recv)
Updated: 3
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NAME
socket_recv - receive UDP datagrams over IPv4/IPv6 connections
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)
Index
- NAME
-
- SYNTAX
-
- DESCRIPTION
-
- RETURN VALUE
-
- EXAMPLE
-
- SEE ALSO
-
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Time: 14:55:39 GMT, December 15, 2024