[Iaxclient-devel] Strange fatal issue with attempted native transfer behind same NAT...

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Ok, this one is really quite strange.  I have to do some more testing, 
but I seem to have real problems in IAX Phone running under the new 
library whenever I try to make an IAX Phone -to- IAX Phone call with 
both phones behind the same NAT.  Both phones (on different PCs) crash 
right after Asterisk attempts to get them to talk to each other (sends 
TXREQ).

I can't definitively say that it is related to the NAT however.  Could 
be ANY native transfer.  I need to adjust my configuration an try 
again.  Here's the debugging output from the IAX Phone /receiveing/ the 
call:

Tx-Frame Retry[-01] -- OSeqno: 002 ISeqno: 002 Type: IAX     Subclass: 
ACK   
   Timestamp: 00102ms  SCall: 21019  DCall: 00006 [63.146.169.121:4569]
Rx-Frame Retry[No] -- OSeqno: 001 ISeqno: 002 Type: IAX     Subclass: 
ACK   
   Timestamp: 00062ms  SCall: 00006  DCall: 21019 [63.146.169.121:4569]
Rx-Frame Retry[No] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass: 
HANGUP
   Timestamp: 00014ms  SCall: 00037  DCall: 00000 [64.151.32.77:4569]
Tx-Frame Retry[-01] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass: 
ACK   
   Timestamp: 00014ms  SCall: 21020  DCall: 00037 [64.151.32.77:4569]
Rx-Frame Retry[No] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass: 
NEW   
   Timestamp: 00014ms  SCall: 00038  DCall: 00000 [64.151.32.77:4569]
   VERSION         : 2
   CALLED NUMBER   : s
   CALLING NUMBER  : 8168221807
   CALLING NAME    : Steven Sokol
   LANGUAGE        : en
   FORMAT          : 1024
   CAPABILITY      : 1542
   ADSICPE         : 0
   DATE TIME       : 156861043

Tx-Frame Retry[-01] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass: 
ACK   
   Timestamp: 00014ms  SCall: 21021  DCall: 00038 [64.151.32.77:4569]
Tx-Frame Retry[010] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass: 
ACCEPT
   Timestamp: 00015ms  SCall: 21021  DCall: 00038 [64.151.32.77:4569]
   FORMAT          : 1024

Tx-Frame Retry[010] -- OSeqno: 001 ISeqno: 001 Type: CONTROL Subclass: 
RINGING
   Timestamp: 00003ms  SCall: 21021  DCall: 00038 [64.151.32.77:4569]
Rx-Frame Retry[No] -- OSeqno: 001 ISeqno: 001 Type: IAX     Subclass: 
ACK   
   Timestamp: 00015ms  SCall: 00038  DCall: 21021 [64.151.32.77:4569]
Rx-Frame Retry[No] -- OSeqno: 001 ISeqno: 002 Type: IAX     Subclass: 
ACK   
   Timestamp: 00003ms  SCall: 00038  DCall: 21021 [64.151.32.77:4569]
Tx-Frame Retry[010] -- OSeqno: 002 ISeqno: 001 Type: CONTROL Subclass: 
ANSWER
   Timestamp: 02687ms  SCall: 21021  DCall: 00038 [64.151.32.77:4569]
Rx-Frame Retry[No] -- OSeqno: 001 ISeqno: 003 Type: IAX     Subclass: 
ACK   
   Timestamp: 02687ms  SCall: 00038  DCall: 21021 [64.151.32.77:4569]
Rx-Frame Retry[No] -- OSeqno: 001 ISeqno: 003 Type: IAX     Subclass: 
TXREQ 
   Timestamp: 02712ms  SCall: 00038  DCall: 21021 [64.151.32.77:4569]
   APPARENT ADDRES : IPV4 64.151.42.28:4668
   CALL NUMBER     : 21328
   TRANSFER ID     : 1501550657

libiax2/src/iax.c line 629: Started on port 4569
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1614: Making new session, peer callno 37, our 
callno 21020
libiax2/src/iax.c line 1614: Making new session, peer callno 38, our 
callno 21021
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 2

---------------------------------------------------------------------
Here'e the output from the originating phone:
---------------------------------------------------------------------

Tx-Frame Retry[010] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass: 
NEW   
   Timestamp: 00003ms  SCall: 21328  DCall: 00000 [64.151.32.77:4569]
   VERSION         : 2
   CALLING NUMBER  : 8168221807
   CALLING NAME    : Steven Sokol
   FORMAT          : 1024
   CAPABILITY      : 1542
   USERNAME        : ssokol03_sokol
   CALLED NUMBER   : 115
   DNID            : 115

Rx-Frame Retry[No] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass: 
ACCEPT
   Timestamp: 00010ms  SCall: 00014  DCall: 21328 [64.151.32.77:4569]
   FORMAT          : 1024

Tx-Frame Retry[-01] -- OSeqno: 001 ISeqno: 001 Type: IAX     Subclass: 
ACK   
   Timestamp: 00010ms  SCall: 21328  DCall: 00014 [64.151.32.77:4569]
Rx-Frame Retry[No] -- OSeqno: 001 ISeqno: 001 Type: CONTROL Subclass: 
ANSWER
   Timestamp: 00013ms  SCall: 00014  DCall: 21328 [64.151.32.77:4569]
Tx-Frame Retry[-01] -- OSeqno: 001 ISeqno: 002 Type: IAX     Subclass: 
ACK   
   Timestamp: 00013ms  SCall: 21328  DCall: 00014 [64.151.32.77:4569]
Rx-Frame Retry[No] -- OSeqno: 002 ISeqno: 001 Type: CONTROL Subclass: 
RINGING
   Timestamp: 00016ms  SCall: 00014  DCall: 21328 [64.151.32.77:4569]
Tx-Frame Retry[-01] -- OSeqno: 001 ISeqno: 003 Type: IAX     Subclass: 
ACK   
   Timestamp: 00016ms  SCall: 21328  DCall: 00014 [64.151.32.77:4569]
Tx-Frame Retry[010] -- OSeqno: 001 ISeqno: 003 Type: VOICE   Subclass: 138
   Timestamp: 00120ms  SCall: 21328  DCall: 00014 [64.151.32.77:4569]
Rx-Frame Retry[No] -- OSeqno: 003 ISeqno: 002 Type: IAX     Subclass: 
ACK   
   Timestamp: 00120ms  SCall: 00014  DCall: 21328 [64.151.32.77:4569]
Rx-Frame Retry[No] -- OSeqno: 003 ISeqno: 002 Type: CONTROL Subclass: (255?)
   Timestamp: 02711ms  SCall: 00014  DCall: 21328 [64.151.32.77:4569]
Rx-Frame Retry[No] -- OSeqno: 004 ISeqno: 002 Type: IAX     Subclass: 
TXREQ 
   Timestamp: 02714ms  SCall: 00014  DCall: 21328 [64.151.32.77:4569]
   APPARENT ADDRES : IPV4 64.151.42.28:4667
   CALL NUMBER     : 21021
   TRANSFER ID     : 1501550657

libiax2/src/iax.c line 629: Started on port 4569
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 1871: Cancelling transmission of packet 0
ERROR encoding (no samples output (samples=160)
libiax2/src/iax.c line 1871: Cancelling transmission of packet 1
libiax2/src/iax.c line 2153: Don't know what to do with AST control 
-2147483648

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

Following this exchange BOTH clients immediately die and the debugger is 
WAY off base as to where the error occurs.  It always shows the last 
function in my integration DLL -- a function that is not being called 
when the crash occurs.

Anybody have any thoughts?

Thanks,

Steve