[asterisk-bugs] [JIRA] (ASTERISK-22852) Error decoding H245 message - ooh323c

[Gabriele Odone (JIRA)]

Gabriele Odone created ASTERISK-22852:
-----------------------------------------

             Summary: Error decoding H245 message - ooh323c
                 Key: ASTERISK-22852
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22852
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Addons/chan_ooh323
    Affects Versions: 12.0.0-beta1, 11.6.0, 11.4.0
         Environment: RH 5.5
            Reporter: Gabriele Odone
         Attachments: failure.pcap, success.pcap

Environment:
- Asterisk 11.4
- H323 trunk between Asterisk and "Polycom CMA" (H323 Gatekeeper) using
ooh323c module.
- An H323 MCU  ("Polycom RMX") is registered to "Polycom CMA" gatekeeper.

When H323 calls are placed by Polycom RMX, the following lines are written
in /var/log/asterisk/h323_log:

=========================
16:42:04:417  Asn1Error: -2 at ooh323c/src/decode.c:67
16:42:04:418  Error decoding H245 message (incoming, ooh323c_2)
=========================

The same code generating this error is also in the latest 11.6 and 12.0
beta.

Symptom: From the "Polycom RMX" side, the call is heard ringing. From the
SIP side, the call is received and answered. See attached tcpdump example: failure.pcap

If, instead of placing the call from the "Polycom RMX", I place the call
from another H323 endpoint (registered to the same H323 Gatekeeper,
"Polycom CMA"), the call goes through without such error (example: success.pcap).

I suppose it is a H245 parsing error.

In the attached tcpdumps:

10.44.1.60 = SIP client
10.100.202.88 = Asterisk server
10.71.0.55 = H323 Gatekeeper (Polycom CMA)
10.71.0.51 = H323 "client" (Polycom RMX) registered to H323 gatekeeper
10.44.1.156 = H323 client (Polycom CMA Desktop) registered to H323 gatekeeper


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