Re: [Linphone-developers] ZRTP Linphone<->CSipSimple

[Werner Dittmann]

Some remarks from my side:

I assume this log is from Linphone.

the connection seems to be slow because quite some retransmits of packets.
According to the info both clients had a ZRTP connection some time before
(RS match found).

On the second part (CSipSimple to Linphone):
what does "***no more ZRTP chatting!*** mean? Not more data exchange over the 
RTP
connection between the two clients? Or only no more ZRTP packets? Audio packets?

Werner


Am 06.03.2013 08:34, schrieb Sami Farin:
> Linphone to CSipSimple on Android phone works with ZRTP,
> but CSipSimple to Linphone not (Linphone does not respond to ZRTP HelloACK).
> I am using the latest ortp and libzrtpcpp with linphone-3.5.2.
> I would try latest Linphone -dev if it compiled.
> On CSipSimple SIP account being used is getonsip.com.
> 
> Linphone to CSipSimple:
> a=zrtp-hash:1.10 05addd...
> ...
> message: Initialized ZRTP context
> message: Starting ZRTP engine
> message: sent ZRTP Hello    34383
> message: received ZRTP Hello    1
> message: sent ZRTP HelloACK 34384
> message: ZRTP INFO zrtp_InfoHelloReceived
> message: ZRTP INFO zrtp_InfoCommitDHGenerated
> message: received ZRTP Hello    2
> message: sent ZRTP HelloACK 34385
> message: sent ZRTP Hello    34386
> message: sent ZRTP Hello    34387
> message: received ZRTP Hello    3
> message: sent ZRTP HelloACK 34388
> message: sent ZRTP Hello    34389
> message: received ZRTP HelloACK 4
> message: sent ZRTP Commit   34390
> message: sent ZRTP Commit   34391
> message: sent ZRTP Commit   34392
> message: received ZRTP Commit   5
> message: received ZRTP DHPart1  6
> message: ZRTP INFO zrtp_InfoInitDH1Received
> message: ZRTP INFO zrtp_InfoRSMatchFound
> message: sent ZRTP DHPart2  34393
> message: received ZRTP DHPart1  7
> message: sent ZRTP DHPart2  34394
> message: received ZRTP DHPart1  8
> message: sent ZRTP DHPart2  34395
> message: sent ZRTP DHPart2  34396
> message: sent ZRTP DHPart2  34397
> message: received ZRTP Confirm1 9
> message: ZRTP INFO zrtp_InfoInitConf1Received
> message: ZRTP secrets for receiver are ready; auth tag len is 32
> message: sent ZRTP Confirm2 34398
> message: received ZRTP Confirm1 10
> message: sent ZRTP Confirm2 34399
> message: received ZRTP Confirm1 11
> message: sent ZRTP Confirm2 34400
> message: received ZRTP Confirm1 12
> message: received ZRTP Confirm1 13
> message: received ZRTP Conf2ACK 14
> message: ZRTP secrets for sender are ready; auth tag len is 32
> message: ZRTP secrets on: SAS is cp44 previously verified yes - algo 
> AES-128/DH3k
> message: ZRTP INFO zrtp_InfoSecureStateOn
> message: Authentication token is cp44 (verified)
> message: Audio stream is encrypted
> message: All streams are encrypted
> message: received ZRTP Conf2ACK 15
> message: alsa: sound/wall clock skew is average=304.965899 ms, instant=343 ms
> message: received ZRTP Conf2ACK 16
> 
> 
> 
> CSipSimple to Linphone:
> a=zrtp-hash:1.10 05addd...
> ...
> message: Initialized ZRTP context
> message: Starting ZRTP engine
> message: sent ZRTP Hello    51177
> message: sent ZRTP Hello    51178
> message: sent ZRTP Hello    51179
> message: sent ZRTP Hello    51180
> message: received ZRTP Hello    1
> message: sent ZRTP HelloACK 51181
> message: ZRTP INFO zrtp_InfoHelloReceived
> message: ZRTP INFO zrtp_InfoCommitDHGenerated
> message: sent ZRTP Hello    51182
> message: received ZRTP Hello    2
> message: sent ZRTP HelloACK 51183
> message: sent ZRTP Hello    51184
> message: Received message:
> ACK sip:address@hidden SIP/2.0
> ***no more ZRTP chatting!***
> ...
> a=zrtp-hash:1.10 05addd...
> ...
> 


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