control: drop receiver-port

Used by CoUniverse, no signs that used otherwise (but a notice kept for
the case someone is using that).

Author: MartinPulec

src/audio/audio.cpp

@@ -581,27 +581,6 @@ struct audio_decoder {
 static struct response * audio_receiver_process_message(struct state_audio *s, struct msg_receiver *msg)
 {
         switch (msg->type) {
-        case RECEIVER_MSG_CHANGE_RX_PORT: {
-                assert(s->audio_tx_mode == MODE_RECEIVER); // receiver only
-                struct rtp *old_audio_network_device = s->audio_network_device;
-                int         old_rx_port = s->audio_network_parameters.recv_port;
-                s->audio_network_parameters.recv_port = msg->new_rx_port;
-                s->audio_network_device =
-                    initialize_audio_network(&s->audio_network_parameters);
-                if (s->audio_network_device == nullptr) {
-                        s->audio_network_parameters.recv_port = old_rx_port;
-                        s->audio_network_device = old_audio_network_device;
-                        string err = string("Changing audio RX port to ") +
-                                     to_string(msg->new_rx_port) + "  failed!";
-                        LOG(LOG_LEVEL_ERROR) << err << "\n";
-                        return new_response(RESPONSE_INT_SERV_ERR, err.c_str());
-                }
-                rtp_done(old_audio_network_device);
-                LOG(LOG_LEVEL_INFO) << "Successfully changed audio "
-                                       "RX port to "
-                                    << msg->new_rx_port << ".\n";
-                break;
-        }
         case RECEIVER_MSG_GET_AUDIO_STATUS: {
                 double ret             = s->muted_receiver ? 0.0 : s->volume;
                 char   volume_str[128] = "";

src/control_socket.cpp

@@ -562,33 +562,10 @@ static int process_msg(struct control_state *s, fd_t client_fd, char *message, s
                         send_message(s->root_module, path_audio, (struct message *) msg_audio);
                 free_response(resp_audio);
         } else if (prefix_matches(message, "receiver-port ")) {
-                struct msg_receiver *msg =
-                        (struct msg_receiver *)
-                        new_message(sizeof(struct msg_receiver));
-                struct msg_receiver *msg_audio =
-                        (struct msg_receiver *)
-                        new_message(sizeof(struct msg_receiver));
-                msg->type = RECEIVER_MSG_CHANGE_RX_PORT;
-                msg_audio->type = RECEIVER_MSG_CHANGE_RX_PORT;
-
-                char *port_str = suffix(message, "receiver-port ");
-
-                msg->new_rx_port = atoi(port_str);
-                if (strchr(port_str, ':')) {
-                        msg_audio->new_rx_port = atoi(strchr(port_str, ':') + 1);
-                } else {
-                        msg_audio->new_rx_port = msg->new_rx_port + 2;
-                }
-
-                enum module_class path_receiver[] = { MODULE_CLASS_RECEIVER, MODULE_CLASS_NONE };
-                enum module_class path_audio_receiver[] = { MODULE_CLASS_AUDIO, MODULE_CLASS_RECEIVER, MODULE_CLASS_NONE };
-                append_message_path(path, sizeof(path), path_receiver);
-                append_message_path(path_audio, sizeof(path_audio), path_audio_receiver);
-                resp =
-                        send_message(s->root_module, path, (struct message *) msg);
-                struct response *resp_audio =
-                        send_message(s->root_module, path_audio, (struct message *) msg_audio);
-                free_response(resp_audio);
+                const char msg[] = "receiver-port has been removed. Let us "
+                                   "know if you use this feature. ";
+                bug_msg(LOG_LEVEL_ERROR, msg);
+                resp = new_response(RESPONSE_BAD_REQUEST, msg);
         } else if(prefix_matches(message, "fec ")) {
                 auto *msg = reinterpret_cast<struct msg_universal *>(new_message(sizeof(struct msg_universal)));
                 char *fec = suffix(message, "fec ");

src/messaging.h

@@ -3,7 +3,7 @@
  * @author Martin Pulec     <martin.pulec@cesnet.cz>
  */
 /*
- * Copyright (c) 2013-2025 CESNET
+ * Copyright (c) 2013-2026 CESNET, zájmové sdružení právnických osob
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -108,7 +108,6 @@ struct msg_sender {
 };
 
 enum msg_receiver_type {
-        RECEIVER_MSG_CHANGE_RX_PORT,
         RECEIVER_MSG_VIDEO_PROP_CHANGED,
         RECEIVER_MSG_GET_AUDIO_STATUS,
         RECEIVER_MSG_INCREASE_VOLUME,

src/video_rxtx/ultragrid_rtp.cpp

@@ -182,29 +182,6 @@ void ultragrid_rtp_video_rxtx::receiver_process_messages()
                 struct response *r = NULL;
 
                 switch (msg->type) {
-                case RECEIVER_MSG_CHANGE_RX_PORT:
-                        {
-                                assert(m_rxtx_mode == MODE_RECEIVER); // receiver only
-                                auto *old_device = m_network_device;
-                                auto old_port = m_recv_port_number;
-                                m_recv_port_number = msg->new_rx_port;
-                                m_network_device = initialize_network(m_requested_receiver.c_str(),
-                                                m_recv_port_number,
-                                                m_send_port_number, m_participants,
-                                                m_force_ip_version,
-                                                m_mcast_if.c_str(),
-                                                m_ttl);
-                                if (m_network_device == nullptr) {
-                                        log_msg(LOG_LEVEL_ERROR, "[control] Failed to change RX port to %d\n", msg->new_rx_port);
-                                        r = new_response(RESPONSE_INT_SERV_ERR, "Changing RX port failed!");
-                                        m_network_device = old_device;
-                                        m_recv_port_number = old_port;
-                                } else {
-                                        log_msg(LOG_LEVEL_NOTICE, "[control] Changed RX port to %d\n", msg->new_rx_port);
-                                        destroy_rtp_device(old_device);
-                                }
-                                break;
-                        }
                 case RECEIVER_MSG_VIDEO_PROP_CHANGED:
                         {
                                 pdb_iter_t it;