Looks up the #GType to be used when creating socket connections on sockets with the specified @family, @type and @protocol.
If no type is registered, the #GSocketConnection base type is returned.
a #GType, inheriting from %G_TYPE_SOCKET_CONNECTION
a #GSocketFamily
a #GSocketType
a protocol id
2.22
See Implementation
Looks up the #GType to be used when creating socket connections on sockets with the specified @family, @type and @protocol.
If no type is registered, the #GSocketConnection base type is returned.