Socket options for a tcp server with 3G clients & frequent disconnections

Posted by Joel on Server Fault See other posts from Server Fault or by Joel
Published on 2011-11-24T23:10:48Z Indexed on 2011/11/25 2:01 UTC
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Filed under:

java

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tcp

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socket

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3g

I have a TCP server, written in java, sending and receiving many short messages, from 500 bytes to 100 KB long. It's a chess game and chat server, to make it simple. The server is running Debian 6.

Half of the clients are connecting from 3G networks, and half over standard DSL.

A portion of the 3G clients lose connection pretty often. The error I get on the server and on the client socket is Connection reset.

I have come across this page at Oracle documentation: socketOpt. I am wondering what I could tune there to lower the number of disconnections from 3G clients. I don't mind about the ping or transfer rate, but just about the TCP disconnections.

I am not skilled enough to understand the impact of each setting, but I sort of understood that the TCP window was important, although I don't know exactly how. So I'm asking if anyone here has an idea ?

Thanks if you can help.

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