Re: Telnet Problems

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I think you could capture the tcp stream to see its flow.
I guess the tcp stack (or maybe some gnugk timeout)
closes the socket due to lack of buffers.

----- Original Message ----- 
From: "Nyamul Hassaan" <mnhassan@xxxxxxx>
To: "GNU Gatekeeper Users" <openh323gk-users@xxxxxxxxxxxxxxxxxxxxx>
Sent: Wednesday, January 24, 2007 1:05 PM
Subject: Re:  Telnet Problems


> Dear Jan,
>
> I've tested the telnet problem on 2.2.5 today.  The problem seems to be 
> NOT
> present in the following cases:
>
> 1.  When I ran the telnet client on the remote Win2k3 system that also
> hosted the GnuGK.
> 2.  When I ran the telnet client on a remote CentOS 4.4 server which is 
> also
> hosted in the same data center as the GnuGK system (latency less than 
> 1ms).
>
> However, whenever I'm running the ! command from a system that has a 
> latency
> of around 350ms, there is a problem.  I've test on Windows 2000 and CentOS
> 4.4.  Same problem on both.  The client disconnects after getting some 
> data.
>
> Could you tell me why this is happening?
>
> Regards
> HASSAAN
>
>
>
> ----- Original Message ----- 
> From: "Jan Willamowius" <jan@xxxxxxxxxxxxxx>
> To: <openh323gk-users@xxxxxxxxxxxxxxxxxxxxx>
> Sent: Sunday, January 21, 2007 08:12
> Subject: Re:  Telnet Problems
>
>
>> You could revert the implementation of USocket::WriteData() in
>> yasocket.cxx back to the 2.2.4 version. If that works better, I could
>> disable the chunking for Windows. It would be also good to know if you
>> could reproduce the same problem on a Linux machine.
>>
>> I checked the changelog and we also have Doron's status port filtering
>> new in 2.2.5. But that is disabled by default and is harder to revert
>> for a test.
>>
>>
>> Nyamul Hassaan wrote:
>> > Hi Jan,
>> >
>> > You are right, my messages are huge.  Sometimes even close to 100 kb. 
>> > I
>> > have written a small php utility which downloads the current calls from
> the
>> > GnuGK every 15 seconds, and this data can be viewed in an assorted
> manner
>> > (by routes and by source IPs).
>> >
>> > Although I use PHPs socket functions to do this, but the result is the
> same
>> > as using a regular telnet client from windows.
>> >
>> > Is there anything else that I should be looking into?
>> >
>> > Regards
>> > HASSAAN
>> >
>> >
>> >
>> > ----- Original Message ----- 
>> > From: "Jan Willamowius" <jan@xxxxxxxxxxxxxx>
>> > To: <openh323gk-users@xxxxxxxxxxxxxxxxxxxxx>
>> > Sent: Sunday, January 21, 2007 07:29
>> > Subject: Re:  Telnet Problems
>> >
>> >
>> > > Hi,
>> > >
>> > > in 2.2.5 big messages (greater 10 KB) are sent in chuncks and a small
>> > > delay is added between them. This prevented data loss people were
>> > > seeing on large messages. But it has been tested mostly on Unix.
>> > >
>> > > Are your messages > 10KB ? Maybe we have to disable this on Windows,
>> > > but I wouldn't know why. I also tested with the MS Telnet client.
>> > >
>> > > Regards,
>> > > Jan
>> > >
>> > > Nyamul Hassaan wrote:
>> > > > Hi,
>> > > >
>> > > > There seems to be a problem with telnet status port messages in
> version
>> > 2.2.5.  Whenever I want to current calls list (! command), the telnet
>> > session terminates in the middle, after some data has been received.
> This
>> > usually happens when there is a moderately higher call load (over 50
> calls).
>> > The same problem occassionaly happened during versions 2.2.2 and 2.2.3,
> but
>> > in 2.2.4 this was almost non-existent.
>> > > >
>> > > > Has there been a change in the way GnuGK sends packets over the
> telnet
>> > that is causing this?
>> > > >
>> > > > I'm using Microsoft Windows, so my telnet client is Microsoft 
>> > > > Telnet
>> > Client.
>> > > >
>> > > > Regards
>> > > > HASSAAN
>> > >
>> > >
>> > > -- 
>> > > Jan Willamowius, jan@xxxxxxxxxxxxxx, http://www.gnugk.org/


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