Re: [jetty-dev] direct connection to a proxy

[Jan Bartel <janb@xxxxxxxxxxx>]

Alexander,

What's the number of open file descriptors that you have configured
for your operating system? Perhaps the number is set too low 
for the number of concurrent connections?

Jan

Alexander (Sasha) Sirotkin wrote:
> I have application that uses ProxyServlet which works alright. However, 
> direct connection to that proxy port kill it with the following exception
>
> java.net.SocketException: Too many open files
> Proxying localhost/
>     at sun.nio.ch.Net.socket0(Native Method)
>     at sun.nio.ch.Net.socket(Net.java:92)
>     at sun.nio.ch.SocketChannelImpl.<init>(SocketChannelImpl.java:83)
>     at 
> sun.nio.ch.SelectorProviderImpl.openSocketChannel(SelectorProviderImpl.java:37)
>     at java.nio.channels.SocketChannel.open(SocketChannel.java:105)
>     at 
> org.eclipse.jetty.client.SelectConnector.startConnection(SelectConnector.java:121)
>     at 
> org.eclipse.jetty.client.HttpDestination.startNewConnection(HttpDestination.java:244)
>     at 
> org.eclipse.jetty.client.HttpDestination.doSend(HttpDestination.java:476)
>     at 
> org.eclipse.jetty.client.HttpDestination.send(HttpDestination.java:422)
>     at org.eclipse.jetty.client.HttpClient.send(HttpClient.java:148)
>     at 
> org.eclipse.jetty.servlets.ProxyServlet.service(ProxyServlet.java:341)
>     at 
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:521)
>     at 
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:436)
>     at 
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:118)
>     at 
> org.eclipse.jetty.server.session.SessionHandler.handle(SessionHandler.java:179)
>     at 
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:930)
>     at 
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:371)
>     at 
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:864)
>     at 
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:116)
>     at 
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:112)
>     at org.eclipse.jetty.server.Server.handle(Server.java:337)
>     at 
> org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:562)
>     at 
> org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:986)
>     at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:530)
>     at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:203)
>     at 
> org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:415)
>     at 
> org.eclipse.jetty.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:437)
>     at 
> org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:435)
>     at java.lang.Thread.run(Thread.java:595)
> 2009-08-29 16:55:07.978:WARN::java.net.SocketException: Too many open files
>
> Is that a bug ?
>
> My code
>
>         Server server = new Server(8080);
>         ServletContextHandler context = new 
> ServletContextHandler(ServletContextHandler.SESSIONS);
>         context.setContextPath("/");
>         server.setHandler(context);
>         context.addServlet(new ServletHolder(new 
> JettyScreenshotProxyServlet()), "/");
>         server.start();
>         server.join();
>
>
> ------------------------------------------------------------------------
>
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--
Jan Bartel, Webtide LLC | janb@xxxxxxxxxxx | http://www.webtide.com