Are there any changes to chan_sip since 09/16/04 in the stable branch that could affect the way Asterisk issues an ACK?

 

The reason I ask…I have a product by INGATE called the Siparator which assists in NAT traversal. It worked great until I upgraded to Asterisk v1.0. After comparing the logs it looks like asterisk may no longer send the GUID type ACK response the Siparator is expecting. Take a quick look at the difference below. (BTW 10.10.0.6 is the Asterisk box)

 

Asterisk build from 09/16/04: (These are examples not necessarily the same call)

 

Siparator log says:

>>> Info: sipfw: recv from 10.10.0.6: ACK sip:[EMAIL PROTECTED] SIP/2.0

 

Asterisk sip debug says:

Transmitting:

ACK sip:[EMAIL PROTECTED] SIP/2.0

Via: SIP/2.0/UDP 10.10.0.6:5060;branch=z9hG4bK4441b7b5

Route: <sip:[EMAIL PROTECTED]>

From: "Chad Brown" <sip:[EMAIL PROTECTED]>;tag=as490d60cd

To: <sip:[EMAIL PROTECTED]>;tag=3307489924-529483

Contact: <sip:[EMAIL PROTECTED]>

Call-ID: [EMAIL PROTECTED]

CSeq: 102 ACK

User-Agent: Asterisk PBX

Content-Length: 0

 

 

 

Asterisk build v1.0 (These are examples not necessarily the same call)

 

Siparator log says:

>>> Info: sipfw: recv from 10.10.0.6: ACK sip:[EMAIL PROTECTED] SIP/2.0

 

Asterisk sip debug says:

Transmitting:

ACK sip:[EMAIL PROTECTED] SIP/2.0

Via: SIP/2.0/UDP 10.10.0.6:5060;branch=z9hG4bK4be3d57b

Route: <sip:[EMAIL PROTECTED]>

From: "Chad Brown" <sip:[EMAIL PROTECTED]>;tag=as5c7a2a79

To: <sip:[EMAIL PROTECTED]>;tag=3307285355-806590

Contact: <sip:[EMAIL PROTECTED]>

Call-ID: [EMAIL PROTECTED]

CSeq: 102 ACK

User-Agent: Asterisk PBX

Content-Length: 0

 

 

My guess is that the Siparator keeps track of separate streams with the long GUID string and then does an appropriate transform. Since the GUID is gone in v1.0 so is Siparators ability to translate/transform the call.

 

Thanks for you help!

 

Chad Brown - IdentityMine

 

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