Re: [android-developers] Re: Sprint 4G(WIMAX) tcp connection problem

I agree - testing 80 sounds like a good idea to gain more info about what may be happening.

On Wed, Apr 17, 2013 at 10:43 AM, bob <bob@coolfone.comze.com> wrote:

Is it an option to run the XMPP server on port 80?

Or perhaps just set up a test server on port 80 to explore the hypothesis that this will resolve the problem?

Alternatively, you could also create a proxy that runs on port 80 and acts as an intermediary.

Thanks.

On Wednesday, April 17, 2013 9:20:27 AM UTC-5, Long wrote:

I am connecting to tcp port 5222 which provides xmpp service

On Tue, Apr 16, 2013 at 12:00 AM, bob <b...@coolfone.comze.com> wrote:

What port number are you using on the server?

Maybe use port 80 as it is more open?

Thanks.

On Saturday, April 13, 2013 5:35:13 AM UTC-5, Long wrote:

Hi Developers, 

    I have an background service which connects my server with a TCP connection.

    My background service sends a ping packet to my server every 4minutes to keep the socket alive.

   The problem is that the device can not get the packet from the server after a short time(3 seconds from my test) after the ping is sent. 

   This app works fine on other networks(AT&T, verizon). 

 

   The strange thing is that if I force the device to connect to 3G(EVDO revision A), it works fine.

 

   It seems to me that, on Sprint 4G network, when an app sends a packet through a tcp socket, and then the socket is idle for

several seconds, then the app will never be able to receive packets from this socket.

   

   I don't think it's related to the 4G signal, since this issue can be reproduced every time.

   Any suggestions?

 

   

  

   

    

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