Re: Creating multiple TCP listeners in PJSUA2

301@xxxxxxx · Mon, 16 Jan 2017 10:59:56 +0100

Hi Aleksandar,

Are you trying to create a new listener on the same IP/port?
Keep in mind that only one instance of an endpoint shall be created.

Regards,
Thibault

2017-01-04 15:49 GMT+01:00 Aleksandar Milenkovic <shark@xxxxxxxxxxxxxx>:
Hello folks,
I'm trying to create multiple TCP listeners in pjsua2 on android using the pjproject-2.5.5 release. Thing is, I don't really require many of them, i just need to replace the current one with a new instance because Doze mode is messing things up.

After returning from Doze mode, I cannot create more TCP listeners and thus cannot (re)register anymore, here's the error I'm getting in Java:

D/PJSIP: 15:20:41.303    tcptp:47899  SIP TCP transport destroyed
D/PJSIP: 15:20:41.304   pjsua_core.c  Error creating SIP TCP listener: Object with the same type exists (PJSIP_ETYPEEXISTS) [status=171002]
D/PJSIP: 15:20:41.304   endpoint.cpp  pjsua_transport_create(type, &tcfg, &tid) error: Object with the same type exists (PJSIP_ETYPEEXISTS) (status=171002) [../src/pjsua2/endpoint.cpp:1614]
W/System.err: java.lang.Exception: Title:       pjsua_transport_create(type, &tcfg, &tid)
W/System.err: Code:        171002
W/System.err: Description: Object with the same type exists (PJSIP_ETYPEEXISTS)
W/System.err: Location:    ../src/pjsua2/endpoint.cpp:1614
W/System.err:     at org.pjsip.pjsua2.pjsua2JNI.Endpoint_transportCreate(Native Method)
W/System.err:     at org.pjsip.pjsua2.Endpoint.transportCreate(Endpoint.java:178)
W/System.err:     at org.pjsip.pjsua2.app.MyApp.createTransport(MyApp.java:105)
W/System.err:     at com.packagename.app.calling.MyService.initializeSIP(MyService.java:798)
W/System.err:     at com.packagename.app.calling.MyService.access$1600(MyService.java:109)
W/System.err:     at com.packagename.app.calling.MyService$MyBroadcastReceiver.onReceive(MyService.java:1982)
W/System.err:     at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:1122)
W/System.err:     at android.os.Handler.handleCallback(Handler.java:751)
W/System.err:     at android.os.Handler.dispatchMessage(Handler.java:95)
W/System.err:     at android.os.Looper.loop(Looper.java:154)
W/System.err:     at android.app.ActivityThread.main(ActivityThread.java:6077)
W/System.err:     at java.lang.reflect.Method.invoke(Native Method)
W/System.err:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
W/System.err:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
E/PJSIP: java.lang.Exception: Title:       pjsua_transport_create(type, &tcfg, &tid)
                              Code:        171002
                              Description: Object with the same type exists (PJSIP_ETYPEEXISTS)
                              Location:    ../src/pjsua2/endpoint.cpp:1614

So i've grepped for PJSIP_ETYPEEXISTS and found occurances in pjsip/src/pjsip/sip_transport.c and made a small patch in this fashoin:

PJ_DEF(pj_status_t) pjsip_tpmgr_register_tpfactory( pjsip_tpmgr *mgr,
						    pjsip_tpfactory *tpf)
{
    pjsip_tpfactory *p;
    pj_status_t status;

    pj_lock_acquire(mgr->lock);

    /* Check that no factory with the same type has been registered. */
    status = PJ_SUCCESS;
    for (p=mgr->factory_list.next; p!=&mgr->factory_list; p=p->next) {
	if (p->type == tpf->type) {
	    /*
	     * SHARK
	     * attempted fix; if a type exists, simply 
	     * overwrite it instead of telling me it already exists
	    * status = PJSIP_ETYPEEXISTS;
	    * break;
	    */

	    pj_list_insert_after(p, tpf);
	    pj_list_erase(&p);
	    pj_lock_release(mgr->lock);
	    return status;

	}
        //rest of the function ommited

However, I'm still facing the PJSIP_ETYPEEXISTS error and am somewhat clueless as to where it's coming from as if the patch didn't have any effect which leads me to believe i patched the wrong file or in the wrong place

I have also read the archives about a similar-ish problem in a thread called "Multiple endpoints" in which a one-liner patch was attached by Alain Totouom which i cannot find... 

Would someone be able to nudge me in the right direction with this issue?

Kind regards, happy new year and merry christmass holidays,
Aleksandar

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