Function gio_sys::g_socket_send_with_blocking

pub unsafe extern fn g_socket_send_with_blocking(socket: *mut GSocket,
                                                 buffer: *mut u8,
                                                 size: size_t,
                                                 blocking: gboolean,
                                                 cancellable: *mut GCancellable,
                                                 error: *mut *mut GError)
                                                 -> ssize_t