+ if (stream->metadata_flag) {
+ /*
+ * Lock the control socket for the complete duration of the function
+ * since from this point on we will use the socket.
+ */
+ pthread_mutex_lock(&relayd->ctrl_sock_mutex);
+
+ ret = write_relayd_metadata_id(splice_pipe[1], stream, relayd,
+ padding);
+ if (ret < 0) {
+ written = ret;
+ goto end;
+ }
+
+ total_len += sizeof(struct lttcomm_relayd_metadata_payload);
+ }
+
+ ret = write_relayd_stream_header(stream, total_len, padding, relayd);
+ if (ret >= 0) {
+ /* Use the returned socket. */
+ outfd = ret;
+ } else {
+ ERR("Remote relayd disconnected. Stopping");