[SR-Users] CRLF Error with tcp_crlf_ping

[Jijo]

There is no problem as such.

On Sat, Mar 24, 2012 at 5:20 AM, Daniel-Constantin Mierla <miconda at gmail.com
> wrote:

>  Hello,
>
>
> On 3/23/12 3:15 PM, Jijo wrote:
>
> Hello,
>
>  Yes it is sending CRLF after the second CRLF from client.
>
>  Another thing is, Kamailio would send CRLF even if the second CRLF come
> after few seconds.
>
>  I believe we don't have any way to drop it ?
>
>
> not really, in a stream protocol, such delays can appear due to
> congestions in some routers -- the apps just have to keep reading until a
> format error, packet is complete or connection is closed. Few seconds could
> be very common in between parts of large sip messages.
>
> Are these sequential CRLFs causing problems?
>
> Cheers,
> Daniel
>
>
>  Thanks
> Jijo
>
>
> On Fri, Mar 23, 2012 at 5:34 AM, Daniel-Constantin Mierla <
> miconda at gmail.com> wrote:
>
>>  Hello,
>>
>> is kamailio sending crlf after the second crlf from the client?
>>
>> There is no notion of a packet in a stream connection, even a sip packet
>> can be send char by char and the server has to assemble it by keep reading
>> in a local buffer until all is retrieved.
>>
>> Cheers,
>> Daniel
>>
>>
>> On 3/23/12 1:50 AM, Jijo wrote:
>>
>> Hi
>>
>>  Sorry for the late reply,
>>
>>  I observed this issue when testing with broken TLS UA, which was
>> sending CRLF in two packets instead of double CRLF in a single packet.
>>
>>  It is very easy to recreate using openssl s_client command , where
>> kamailio as server
>>
>>   openssl s_client -connect 192.168.2.151:5061  -CAfile serverCA.pem
>>  -crlf
>>
>>
>>  After the connection established by the client, Press enter key two
>> times from the key board, which will send CRLF in two packet to server and
>> You would see CRLF replied back by Kamailio
>>
>>  Note:-crlf will send CR as CRLF in a single packet to server.
>>
>>  Thanks
>> Jijo
>>
>>
>>
>>
>>
>> On Sat, Mar 10, 2012 at 6:27 AM, Daniel-Constantin Mierla <
>> miconda at gmail.com> wrote:
>>
>>> Hello,
>>>
>>> looking at the code, it seems that CRLF is sent only after CRLFCRLF. Can
>>> you get a pcap for your case?
>>>
>>> Cheers,
>>> Daniel
>>>
>>>  On Tue, Feb 28, 2012 at 5:28 PM, Jijo <realjijo at gmail.com> wrote:
>>>
>>>>  Hi All.
>>>>
>>>>  As per the tcp_crlf_ping description, kamailio shall reply CRLF only
>>>> when it receives "CRLF CRLF".  But In the 3.1.0 version, if kamailio
>>>> recieves "CRLF", it respond back CRLF.  Is this an expected behavior or an
>>>> error?
>>>>
>>>>  Thanks
>>>>  Jijo
>>>>
>>>>  _______________________________________________
>>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>>>> sr-users at lists.sip-router.org
>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>>
>>>>
>>>
>>>
>>> --
>>> Daniel-Constantin Mierla
>>>   http://www.asipto.com
>>>
>>
>>
>>   --
>> Daniel-Constantin Mierla
>> Kamailio Advanced Training, April 23-26, 2012, Berlin, Germanyhttp://www.asipto.com/index.php/kamailio-advanced-training/
>>
>>
>
> --
> Daniel-Constantin Mierla
> Kamailio Advanced Training, April 23-26, 2012, Berlin, Germanyhttp://www.asipto.com/index.php/kamailio-advanced-training/
>
>
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