You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
1.1 KiB
Groff
37 lines
1.1 KiB
Groff
.TH socket_recv6 3
|
|
.SH NAME
|
|
socket_recv6 \- receive a UDP datagram
|
|
.SH SYNTAX
|
|
.B #include <libowfat/socket.h>
|
|
|
|
ssize_t \fBsocket_recv6\fP(int \fIs\fR, char* \fIbuf\fR, size_t \fIlen\fR,
|
|
char \fIip\fR[16], uint16* \fIport\fR, uint32* \fIscope_id\fR);
|
|
.SH DESCRIPTION
|
|
socket_recv6 receives up to \fIlen\fR bytes starting at \fIbuf\fR from a UDP
|
|
datagram coming in on the socket \fIs\fR. It writes the UDP port to
|
|
\fIport\fR and the IP address to \fIip\fR, and returns the number of
|
|
bytes actually received (or -1 if anything went wrong).
|
|
|
|
For link-local addresses, \fIscope_id\fR will become the network
|
|
interface number, which can be translated into the name of the interface
|
|
("eth0") with socket_getifname.
|
|
.SH 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.
|
|
.SH EXAMPLE
|
|
#include <libowfat/socket.h>
|
|
|
|
int \fIs\fR;
|
|
char \fIip\fR[16];
|
|
uint16 \fIp\fR;
|
|
char buf[1000];
|
|
int len;
|
|
uint32 scope_id;
|
|
|
|
\fIs\fR = socket_tcp4();
|
|
socket_bind6(s,ip,p);
|
|
len = socket_recv6(s,buf,sizeof(buf),ip,&p,&scope_id);
|
|
|
|
.SH "SEE ALSO"
|
|
socket_recv4(3), socket_getifname(3)
|