.TH socket_bind6 3
.SH NAME
socket_bind6 \- set the local IP address and port of a socket
.SH SYNTAX
.B #include <libowfat/socket.h>

int \fBsocket_bind6\fP(int \fIs\fR, char \fIip\fR[16], uint16 \fIport\fR,
                 uint32 \fIscope_id\fR);
.SH DESCRIPTION
socket_bind6 sets the local IP address and TCP/UDP port of a TCP/UDP
socket \fIs\fR to \fIip\fR and \fIport\fR respectively.

If the IP address is ::, the operating system chooses a local IP
address.  If \fIport\fR is 0, the operating system chooses a port.

Normally socket_bind6 returns 0. If anything goes wrong, socket_bind6
returns -1, setting errno appropriately.

The \fIscope_id\fR should normally be zero, but for link-local addresses
it specifies the interface number on which to bind.  The interface
number for a given network interface name can be found with
\fBsocket_getifidx\fR.
.SH EXAMPLE
  #include <libowfat/socket.h>

  int \fIs\fR;
  char \fIip\fR[16];
  uint16 \fIp\fR;
  uint32 \fIscope_id\fR;

  \fIs\fR = socket_tcp6();
  socket_bind6(s,ip,p,scope_id);
  socket_connect6(s,ip,p);

.SH "SEE ALSO"
socket_bind4(3), socket_getifidx(3)