Clients can make maximum only 15 connections to ubuntu custom server

Posted by gtan on Server Fault See other posts from Server Fault or by gtan
Published on 2012-03-29T21:28:28Z Indexed on 2012/03/29 23:31 UTC
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linux

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networking

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tcp

I have a custom server in C# being run on Ubuntu 9 under mono. I can make up to 15 silverlight clients connect to the server. When I make the 16th, it just waits. And if I close one of the established connections, the 16th client is able to connect. I am making the connections from one machine. I am also not exceeding any file handle limit. The limit is 1024 and I am having around 300.

Any ideas how to make more connections? Also why the number 15? Is it something linux-specific?

EDIT: I have run the same server on an Ubuntu 11.10 virtual machine and was able to make more than 15 connections. I presume it's a configuration problem on the Ubuntu 9 machine then. Any help on that?

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