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From Ole Matzura <...@eviware.com>
Subject Re: java.net.BindException when loadtesting..
Date Wed, 22 Mar 2006 13:40:53 GMT
Thanks Steve,

"unfortunately", thats exactly what I'm doing.. just creating one 
httpclient instance statically at startup..

any other ideas?

regards,

/Ole

Steve Terrell skrev:
> You only need once instance of MultiThreadedConnectionManager and
> HttpClient for your application. It looks like you are creating numerous
> copies of these objects. Each time you do that, you are creating a
> separate connection pool. I suspect that's why you are 'leaking'
> connections.
>
> Try declaring MultiThreadedConnectionManager and HttpClient objects as
> static.
>
> --Steve
>
> -----Original Message-----
> From: Ole Matzura [mailto:ole@eviware.com] 
> Sent: Wednesday, March 22, 2006 6:38 AM
> To: HttpClient User Discussion
> Subject: java.net.BindException when loadtesting..
>
> Hi all!
>
> I have a "strange" problem.. I'm running loadtests on a local IIS using 
> a MultiThreadedConnectionManager created as follows:
>
> MultiThreadedHttpConnectionManager connectionManager = new 
> MultiThreadedHttpConnectionManager();
> connectionManager.getParams().setDefaultMaxConnectionsPerHost( 500 );
> connectionManager.getParams().setMaxTotalConnections( 2000 );
> httpClient = new HttpClient(connectionManager);
>
> (i've tried lower values with the same results)
>
> My loadtest runs 10 parallell threads which create new PostMethods 
> containing a "Connection: close" header for each request. After each 
> request I call postMethod.releaseConnection().. (in a finally block)
>
> After about 3600 requests i get an exception when calling 
> httpClient.executeMethod( postMethod );
>
> java.net.BindException: Address already in use: connect
>     at java.net.PlainSocketImpl.socketConnect(Native Method)
>     at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
>     at
> java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
>     at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
>     at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
>     at java.net.Socket.connect(Socket.java:507)
>     at java.net.Socket.connect(Socket.java:457)
>     at java.net.Socket.<init>(Socket.java:365)
>     at java.net.Socket.<init>(Socket.java:238)
>     at 
> org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.crea
> teSocket(DefaultProtocolSocketFactory.java:79)
>     at 
> org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.crea
> teSocket(DefaultProtocolSocketFactory.java:121)
>     at 
> org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:70
> 6)
>     at 
> org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpCon
> nectionAdapter.open(MultiThreadedHttpConnectionManager.java:1321)
>     at 
> org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMe
> thodDirector.java:386)
>     at 
> org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMetho
> dDirector.java:170)
>     at 
> org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:3
> 96)
>     at 
> org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:3
> 24)
>
> running netstat from the command line shows a list of thousands of 
> active connections.. shouldn't these have been closed? IIS returns the 
> Connection: close header in the response. Why am I running out of 
> connections/sockets/ports/whatever? What am I doing wrong? Can I "force"
>
> the closing of the requests some other way?
>
> thanks for any help!
>
> regards,
>
> Ole
>
>
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>
>
>   



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