since: 2.22


g_socket_bind (
  GSocket* socket,
  GSocketAddress* address,
  gboolean allow_reuse,
  GError** error


When a socket is created it is attached to an address family, but it doesn’t have an address in this family. g_socket_bind() assigns the address (sometimes called name) of the socket.

It is generally required to bind to a local address before you can receive connections. (See g_socket_listen() and g_socket_accept() ). In certain situations, you may also want to bind a socket that will be used to initiate connections, though this is not normally required.

If socket is a TCP socket, then allow_reuse controls the setting of the SO_REUSEADDR socket option; normally it should be TRUE for server sockets (sockets that you will eventually call g_socket_accept() on), and FALSE for client sockets. (Failing to set this flag on a server socket may cause g_socket_bind() to return G_IO_ERROR_ADDRESS_IN_USE if the server program is stopped and then immediately restarted.)

If socket is a UDP socket, then allow_reuse determines whether or not other UDP sockets can be bound to the same address at the same time. In particular, you can have several UDP sockets bound to the same address, and they will all receive all of the multicast and broadcast packets sent to that address. (The behavior of unicast UDP packets to an address with multiple listeners is not defined.)

Available since: 2.22



Type: GSocketAddress

A GSocketAddress specifying the local address.

The data is owned by the caller of the function.

Type: gboolean

Whether to allow reusing this address.


Type: GError **

The return location for a recoverable error.

The argument can be NULL.
If the return location is not NULL, then you must initialize it to a NULL GError*.
The argument will left initialized to NULL by the method if there are no errors.
In case of error, the argument will be set to a newly allocated GError; the caller will take ownership of the data, and be responsible for freeing it.

Return value

Type: gboolean

TRUE on success, FALSE on error.