[Linphone-developers] Problem: ?eXosip: no ACK received during 20s: dropping

[Shu-Hsuan Lin]

How do you compile after making those changes?
I tried compiling with the same make command to compile whole project, but
doesn't seem to work.

Thanks,


-----Original Message-----
From: address@hidden
[mailto:address@hidden On Behalf
Of address@hidden
Sent: Tuesday, October 02, 2012 12:36 AM
To: address@hidden
Subject: Linphone-developers Digest, Vol 116, Issue 2

Send Linphone-developers mailing list submissions to
        address@hidden

To subscribe or unsubscribe via the World Wide Web, visit
        https://lists.nongnu.org/mailman/listinfo/linphone-developers
or, via email, send a message with subject or body 'help' to
        address@hidden

You can reach the person managing the list at
        address@hidden

When replying, please edit your Subject line so it is more specific than
"Re: Contents of Linphone-developers digest..."


Today's Topics:

   1. Re: Problem: ?eXosip: no ACK received during 20s: dropping
      call? (IVAN FERNANDEZ)


----------------------------------------------------------------------

Message: 1
Date: Tue, 2 Oct 2012 09:36:16 +0200
From: IVAN FERNANDEZ <address@hidden>
To: address@hidden
Subject: Re: [Linphone-developers] Problem: ?eXosip: no ACK received
        during 20s: dropping call?
Message-ID:
        <address@hidden>
Content-Type: text/plain; charset="windows-1252"

We've had to add some lines more to the solution code to prevent certain
problem when the '200 OK' message doesn't include any contact field.

Here is the final solution:

*...

SSL *ssl = NULL;



   //*************************************************

   //the modification starts here:

char *msg;

char *contact;

char *newContact;

osip_contact_t *c;

char *result = NULL;

 //we get the message

osip_message_to_str(sip, &message, &length);

 //check if a 200OK message

msg = strtok(message, "\n");

if (strncmp(msg, "SIP/2.0 200 OK",14) == 0){

osip_contact_init(&c);

osip_message_get_contact(sip, 0, &c);


//check if 'contact' field exists
** if(c){**

osip_contact_to_str(c, &contact);

 //check if the ?contact? includes the ?transport? sufix

result = strstr(contact, "transport");

if (result == NULL){

contact[strlen(contact) - 1] = '\0';

newContact = (char *) osip_malloc(strlen(contact) + 16);

sprintf(newContact,"%s;transport=TLS>", contact);

/*OSIP_TRACE(osip_trace(__FILE__, __LINE__, OSIP_ERROR, NULL,

             "New Contact: %s\n", newContact));*/

 //update the ?contact? field to include the missing ?transport? sufix

osip_list_remove(&sip->contacts, 0);

osip_message_set_contact(sip, newContact);

}

}

}

   //the modification ends here

   //******************************************************************

if (host == NULL) {

?
*



2012/10/1 IVAN FERNANDEZ <address@hidden>

> *Hi all,
>
> Finally, after a deeper analysis of the issue, we?ve found a better 
> solution for this problem, that looks a linphone issue after all.
>
> The analysis has revealed that in the described scenary,  Linphone 
> isn?t forming correctly the ?SIP 200 OK? message that notifies the 
> call
> acceptance: the ?contact? field must include the ?transport=tls? sufix 
> but the packet that Linphone is generating doesn?t includes this 
> sufix, what is causing a port mismatch that causes not only this problem
but any more.
>
> In order to solve this issue we?ve had to modified the eXtl_tls.c file 
> for appending this ?transport=tls? sufix to the contact field in the 
> following way (within tls_tl_send_message function):*
> *
> ...
>
> SSL *ssl = NULL;
>
>
>
>    //*************************************************
>
>    //the modification starts here:
>
>  char *msg;
>
> char *contact;
>
> char *newContact;
>
> osip_contact_t *c;
>
> char *result = NULL;
>
>  //we get the message
>
> osip_message_to_str(sip, &message, &length);
>
>  //check if a 200OK message
>
> msg = strtok(message, "\n");
>
> if (strncmp(msg, "SIP/2.0 200 OK",14) == 0){
>
>  osip_contact_init(&c);
>
>  osip_message_get_contact(sip, 0, &c);
>
>  osip_contact_to_str(c, &contact);
>
>   //check if the ?contact? includes the ?transport? sufix
>
>  result = strstr(contact, "transport");
>
>  if (result == NULL){
>
>  contact[strlen(contact) - 1] = '\0';
>
>  newContact = (char *) osip_malloc(strlen(contact) + 16);
>
>  sprintf(newContact,"%s;transport=TLS>", contact);
>
>  /*OSIP_TRACE(osip_trace(__FILE__, __LINE__, OSIP_ERROR, NULL,
>
>             "New Contact: %s\n", newContact));*/
>
>    //update the ?contact? field to include the missing ?transport? 
> sufix
>
>  osip_list_remove(&sip->contacts, 0);
>
>  osip_message_set_contact(sip, newContact);
>
>  }
>
> }
>
>    //the modification ends here
>
>     
> //******************************************************************
>
> if (host == NULL) {
>
> ?
>
> Any comments about this issue/solution?
>
> Thanks and regards...*
>
>
> 2012/8/23 Ramon Poca <address@hidden>
>
>> Then the problem is in the SIP routing setup, not on Linphone.
>> Breaking Linphone to fix whatever your Asterisk+opensips is doing 
>> wrong seems an ugly fix.
>>
>> If the dialog is not ACKed after a certain timeout, the UA should 
>> drop the call. You should look at your opensips/asterisk logs to 
>> check if it's being dropped.
>>
>>
>> > We use opensips as proxy to register the softphones and this 
>> > opensips routes the call between the softphones throught an asterisk
server.
>> > The problem with no ACK only appears if the called terminal is
>> registered
>> > with TLS transport. Despite this lost ACK, the call is coursed 
>> > without other problems...
>> > Regards
>> > 2012/8/22 Ramon Poca <address@hidden>
>> > > If no ACK is being received there might be some trouble in the 
>> > > call
>> setup
>> > > (e.g. the SIP proxy is dropping it). What is the exact scenario?
>> > >
>> > > Ramon Poca - address@hidden
>> > >
>> > >
>>
>>
>> Ramon Poca - address@hidden
>>
>> _______________________________________________
>> Linphone-developers mailing list
>> address@hidden
>> https://lists.nongnu.org/mailman/listinfo/linphone-developers
>>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.nongnu.org/archive/html/linphone-developers/attachments/201210
02/0716e965/attachment.html>

------------------------------

_______________________________________________
Linphone-developers mailing list
address@hidden
https://lists.nongnu.org/mailman/listinfo/linphone-developers


End of Linphone-developers Digest, Vol 116, Issue 2
***************************************************