[Freeswitch-dev] Howto stop or cancel a bridge

21 Jul 2010

      Hello!

I have following problem:

I have bridged my current session to "user/1012@192.168.1.30" with 
timeout of 60 seconds.
The call of bridge runs in a thread using modificated bgapi.
The phone 1012 rings and i play a sound file to another phone with 
number 1010.
Phone with 1010 wants to have the call.
I want to stop or cancel the bridge to phone 1012 without hanging up my 
current session.
Is there a core command to stop/cancel a bridge (like sending a message 
"Cancel bridge" or something else) ?
With this stop/cancel a bridge command the phone 1012 should stop 
ringing, but my originator session should not
hang up (see snippet of my DoingBridge -> @ToDo Cancel or Stop Bridge: 
???????).

Here is a snippet of my Dialplan:
-----------------------------------------------------
<extension name="Externer-Anrufer">
      <condition field="destination_number" expression="^70$">
         <action application="info"/>
        <action application="set" data="hangup_after_bridge=false"/>
        <action application="set" data="ignore_early_media=true"/>
         <action application="myapplication" data="DoingBridge"/>
      </condition>
    </extension>
------------------------------------------------------

Here is a snippet of my DoingBridge from myapplication:

-------------------------------------------
static switch_status_t DoingBridge(switch_core_session_t *session, 
switch_input_args_t *args)
{
    switch_codec_t codec = { 0 };
    switch_status_t status;
    switch_frame_t *read_frame;
    switch_channel_t *channel = switch_core_session_get_channel(session);
    switch_core_session_t * PartnerSession = NULL;
    switch_core_session_t *sessionNebenstelle = NULL;
    switch_channel_t *channelNebenstelle = NULL;
    switch_stream_handle_t dstream = { 0 };
    switch_stream_handle_t astream = { 0 };

    if (switch_channel_pre_answer(channel) != SWITCH_STATUS_SUCCESS) {
        return SWITCH_STATUS_FALSE;
    }

    // Bridge to phone in a thread:       
    SWITCH_STANDARD_STREAM(dstream);
    mybg_bridge("user/1012@192.168.1.30" ,60, session, &dstream);

    bool bNebenStelleAntwortet = 
switch_channel_test_flag(channel,CF_ANSWERED);
    const char * NebenStelle_uuid = NULL;

    while (! phone1010WantsCall && !BridgeAnsweredBy1012)
    {
        // PlayAudio File:

        switch_channel_state_t aktStatus = 
switch_channel_get_state(channel);

        NebenStelle_uuid = switch_channel_get_variable_partner(channel , 
"signal_bond");
        bNebenStelleAntwortet = 
switch_channel_test_flag(channel,CF_ANSWERED);
        if (NebenStelle_uuid && !sessionNebenstelle)
        {
            sessionNebenstelle = 
switch_core_session_locate(NebenStelle_uuid);
            if (sessionNebenstelle)
            {
                channelNebenstelle = 
switch_core_session_get_channel(sessionNebenstelle);
            }
        }
        PlayAudioFile("1010");
    }
    // Stop Playing:
    StopPlayingAudioFile(session);

    if (switch_channel_ready(channel))
    {
        // sessionNebenstelle is 1012
        if (sessionNebenstelle)
        {
            // @ToDo Cancel or Stop Bridge:
            // ?????????????????????????????????????????????
            answerSession(session);
        }

    }       
    ....
    }
---------------------------------------------------

regards

Achim Stamm

-- 
Achim Stamm, Dipl.-Inform. (FH)

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