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Man Pages


Manual Reference Pages  -  LIBOWFAT_SOCKET_RECV6 (3)

NAME

socket_recv6 - receive a UDP datagram

CONTENTS

Syntax
Description
Return Value
Example

SYNTAX

#include <socket.h>

ssize_t socket_recv6(int s, char* buf, size_t len,
char ip[16], uint16* port, uint32* scope_id);

DESCRIPTION

socket_recv6 receives up to len bytes starting at buf from a UDP datagram coming in on the socket s. It writes the UDP port to port and the IP address to ip, and returns the number of bytes actually received (or -1 if anything went wrong).

For link-local addresses, scope_id will become the network interface number, which can be translated into the name of the interface ("eth0") with socket_getifname.

RETURN VALUE

socket_recv6 returns the number of bytes in the datagram if one was received. If not, it returns -1 and sets errno appropriately.

EXAMPLE

#include <socket.h>

int s;
char ip[16];
uint16 p;
char buf[1000];
int len;
uint32 scope_id;

s = socket_tcp4();
socket_bind6(s,ip,p);
len = socket_recv6(s,buf,sizeof(buf),ip,&p,&scope_id);

SEE ALSO

socket_recv4(3), socket_getifname(3)
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