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From "Jignesh Badani" <>
Subject Re: [users@httpd] TCP Connections per hostname?
Date Thu, 24 Sep 2009 02:21:23 GMT
I said 2 or 3, it is actually 2.

"It turns out that this is a case where IE strictly follows the 
standards-- in this case, RFC2616, which covers HTTP1.1.  As noted in the 
Clients that use persistent connections SHOULD limit the number of 
simultaneous connections that they maintain to a given server. A 
single-user client SHOULD NOT maintain more than 2 connections with any 
server or proxy.
Saavy web developers can take this connection limit into account and 
deliver their data from multiple domains, since the browser will open up 
to two connections per domain."

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- - 
Jignesh Badani

raulmt <>
09/06/2009 02:36 PM
[users@httpd] TCP Connections per hostname?


I use Apache as a loadbalancer of Tomcat instances using mod_jk. The IP in
which Apache is has many hostnames and the final application (in Tomcat)
sends a different response depending on the hostname (Header Host) of the

I used Jmeter on this server using only one hostname and with sufficient
number of threads the connections just hangs. The strange thing is that 
this happens, I can't successfully request the site with a normal browser 
suppose that's spected because there are many tcp connections open) BUT if 
use another hostname (that points to the same server) I can request the 
as usual. The other hostname just stop responding until I restart Apache.
Does this mean that the max tcp connections are independent on the 

Sorry if my english isn't very good. Just tell me if you didn't understand
my question, please.

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