Add janus-room-allow-ws-participants for AudioBridge WS media

README.md

@@ -135,6 +135,7 @@ The following channel variables are defined:
 * janus-room-record - The value is specified in the *create* request to Janus and indicates that the room mix should be recorded (only applicable if janus-use-existing-room is false).  The default value is not to record.
 * janus-room-record-file - This value specifies the file name to which the recording should be written.  It is passed in the *create* request to Janus (only applicable if janus-use-existing-room is false and  janus-room-record is true).  If omitted the default filename will be used.
 * janus-room-pin - PIN that is used to validate a user entering the room.  This value is used to set the PIN for a created room.
+* janus-room-allow-ws-participants - When set, the *create* request sets Janus AudioBridge `allow_ws_participants=true`, allowing RTP-over-WebSocket joins later (e.g. BFF `ws-media-session`). Only applicable if janus-use-existing-room is false. Default is not to allow WebSocket media participants.
 * janus-user-token - The token for the user that should be passed in the *join* request.  NB. no method is provided to set the allowed tokens in the *create* room request. Ignored when the server is configured with `hmac-secret`; a signed token is generated instead.
 * janus-hmac-token-ttl - Per-call lifetime (in seconds) for HMAC-signed tokens generated by mod_janus. Only has an effect when the server is configured with `hmac-secret`. Default is 7200 (2 hours), capped at 86400 (24 hours). Short-lived tokens used for session setup and long-poll requests use a fixed 300s TTL regardless of this value.
 * janus-user-record - Janus should generate a file containing the audio from the user only.  It is specified in the *configure* request.  The default value is not to record.

api.c

@@ -824,7 +824,8 @@ janus_id_t apiGetSenderId(server_t *pServer, const janus_id_t serverId, const ch
 
 janus_id_t apiCreateRoom(server_t *pServer, const janus_id_t serverId,
 		const janus_id_t senderId, const janus_id_t roomId, const char *pDescription,
-		switch_bool_t record, const char *pRecordingFile, const char *pPin, const char *pRoomIdStr) {
+		switch_bool_t record, const char *pRecordingFile, const char *pPin,
+		switch_bool_t allow_ws_participants, const char *pRoomIdStr) {
 	message_t request, *pResponse = NULL;
 	janus_id_t result = 0;
 
@@ -896,6 +897,13 @@ janus_id_t apiCreateRoom(server_t *pServer, const janus_id_t serverId,
 		}
 	}
 
+	if (allow_ws_participants) {
+		if (cJSON_AddBoolToObject(request.pJsonBody, "allow_ws_participants", cJSON_True) == NULL) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Cannot create boolean (body.allow_ws_participants)\n");
+			goto done;
+		}
+	}
+
 	if (!(pJsonRequest = encode(request))) {
 		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Cannot create request\n");
 		goto done;

api.h

@@ -67,7 +67,8 @@ switch_status_t apiClaimServerId(server_t *pServer, janus_id_t serverId);
 janus_id_t apiGetSenderId(server_t *pServer, const janus_id_t serverId, const char *callId);
 janus_id_t apiCreateRoom(server_t *pServer, const janus_id_t serverId,
 	const janus_id_t senderId, const janus_id_t roomId, const char *pDescription,
-	switch_bool_t record, const char *pRecordingFile, const char *pPin, const char *pRoomIdStr);
+	switch_bool_t record, const char *pRecordingFile, const char *pPin,
+	switch_bool_t allow_ws_participants, const char *pRoomIdStr);
 switch_status_t apiJoin(server_t *pServer, int hmacTokenTtl,
 	const janus_id_t serverId, const janus_id_t senderId, const janus_id_t roomId,
 	const char *pDisplay, const char *pPin, const char *pToken, const char *callId, const char *pRoomIdStr);

mod_janus.c

@@ -797,6 +797,7 @@ static switch_status_t channel_on_init(switch_core_session_t *session)
 						switch_channel_var_true(channel, "janus-room-record"),
 						switch_channel_get_variable(channel, "janus-room-record-file"),
 						switch_channel_get_variable(channel, "janus-room-pin"),
+						switch_channel_var_true(channel, "janus-room-allow-ws-participants"),
 						tech_pvt->pRoomIdStr) == 0) {
 			switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Failed to create room\n");
 			switch_channel_hangup(channel, SWITCH_CAUSE_INCOMPATIBLE_DESTINATION);