If the incoming RTP stream changes codec force the bridge to break if the other side...

(closes issue #11729)
Reported by: tsearle
Patches:
      new_codec_patch_udiff.patch uploaded by tsearle (license 373)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@98325 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/main/rtp.c b/main/rtp.c
index 6c47db511245e8160353a598b03f1e55f320d04b..dba41826ac1a33ad8295aa4e819e5bda104c4ff2 100644 (file)
--- a/main/rtp.c
+++ b/main/rtp.c
@@ -1062,6 +1062,10 @@ static int bridge_p2p_rtp_write(struct ast_rtp *rtp, struct ast_rtp *bridged, un
        /* Check what the payload value should be */
        rtpPT = ast_rtp_lookup_pt(rtp, payload);
 
+       /* If the payload coming in is not one of the negotiated ones then send it to the core, this will cause formats to change and the bridge to break */
+       if (!bridged->current_RTP_PT[payload].code)
+               return -1;
+
        /* If the payload is DTMF, and we are listening for DTMF - then feed it into the core */
        if (ast_test_flag(rtp, FLAG_P2P_NEED_DTMF) && !rtpPT.isAstFormat && rtpPT.code == AST_RTP_DTMF)
                return -1;
@@ -3142,6 +3146,12 @@ static enum ast_bridge_result bridge_p2p_loop(struct ast_channel *c0, struct ast
        cs[1] = c1;
        cs[2] = NULL;
        for (;;) {
+               /* If the underlying formats have changed force this bridge to break */
+               if ((c0->rawreadformat != c1->rawwriteformat) || (c1->rawreadformat != c0->rawwriteformat)) {
+                       ast_log(LOG_DEBUG, "Oooh, formats changed, backing out\n");
+                       res = AST_BRIDGE_FAILED_NOWARN;
+                       break;
+               }
                /* Check if anything changed */
                if ((c0->tech_pvt != pvt0) ||
                    (c1->tech_pvt != pvt1) ||