Hi Bruce, I've just fixed the Grizzly/NIO exception that occurred on Linux "Resource temporarily unavailable). This solves an issue that was reported by several persons and that we were experiencing as well.
I suggest that you try again when 1.1 RC2 is released. Hopefully soon now. Best regards, Jérôme Louvel -- Restlet ~ Founder and Lead developer ~ http://www.restlet.org Noelios Technologies ~ Co-founder ~ http://www.noelios.com -----Message d'origine----- De : news [mailto:[EMAIL PROTECTED] De la part de Bruce Lee Envoyé : vendredi 19 septembre 2008 20:43 À : [email protected] Objet : Re: Random Grizzly IOException Hi Jerome, Sorry to took so long to reply as I got side tracked with other tasks at hand, but I have tried my test case with the latest Restlet 1.1 RC1 and the same problem still exists. I've attached my test code with simple http server that simply tries to write 80k chars into the response. If the client repeatedly request the page, then eventually bytesWritten on the channel would be 0 (line 248 in ByteUtils.java) and then it'll wait for 10 seconds with line 249 if (SelectorFactory.getSelector().select(10000) == 0) { Finally an exception will be logged. Interesting though, if you remove the select line and allow it to spin on the channel write, the correct data still gets written to the response. However, that is far from the correct way to implement NIO so I've also tried replacing the select with the following code. Selector writeSelector = SelectorFactory .getSelector(); if (writeSelector == null) { // Continue using the main one. continue; } ((SelectableChannel) this.channel).register( writeSelector, SelectionKey.OP_WRITE); if (writeSelector.select(10000) == 0) { throw new IOException("Client disconnected"); } But another set of exceptions occurs after a few requests: java.io.IOException: An established connection was aborted by the software in your host machine at sun.nio.ch.SocketDispatcher.write0(Native Method) at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:33) at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:104) at sun.nio.ch.IOUtil.write(IOUtil.java:75) at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:334) at org.restlet.util.ByteUtils$NbChannelOutputStream.doWrite(ByteUtils.java:243) at org.restlet.util.ByteUtils$NbChannelOutputStream.write(ByteUtils.java:291) at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:202) at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:272) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:276) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:122) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:212) at org.restlet.resource.StringRepresentation.write(StringRepresentation.java:21 2) at org.restlet.resource.StreamRepresentation.write(StreamRepresentation.java:68 ) at com.noelios.restlet.http.HttpServerCall.writeResponseBody(HttpServerCall.jav a:491) at com.noelios.restlet.http.HttpServerCall.sendResponse(HttpServerCall.java:429 ) at com.noelios.restlet.http.HttpServerConverter.commit(HttpServerConverter.java :388) at com.noelios.restlet.http.HttpServerHelper.handle(HttpServerHelper.java:148) at com.noelios.restlet.ext.grizzly.HttpParserFilter.execute(HttpParserFilter.ja va:78) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolCh ain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.jav a:67) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:56 ) at com.sun.grizzly.util.WorkerThreadImpl.run(WorkerThreadImpl.java:169) Sep 19, 2008 2:29:40 PM com.noelios.restlet.http.HttpServerConverter commit SEVERE: An exception occured writing the response entity java.io.IOException: Unable to write to the non-blocking channel. An established connection was aborted by the software in your host machine at org.restlet.util.ByteUtils$NbChannelOutputStream.doWrite(ByteUtils.java:274) at org.restlet.util.ByteUtils$NbChannelOutputStream.write(ByteUtils.java:291) at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:202) at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:272) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:276) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:122) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:212) at org.restlet.resource.StringRepresentation.write(StringRepresentation.java:21 2) at org.restlet.resource.StreamRepresentation.write(StreamRepresentation.java:68 ) at com.noelios.restlet.http.HttpServerCall.writeResponseBody(HttpServerCall.jav a:491) at com.noelios.restlet.http.HttpServerCall.sendResponse(HttpServerCall.java:429 ) at com.noelios.restlet.http.HttpServerConverter.commit(HttpServerConverter.java :388) at com.noelios.restlet.http.HttpServerHelper.handle(HttpServerHelper.java:148) at com.noelios.restlet.ext.grizzly.HttpParserFilter.execute(HttpParserFilter.ja va:78) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolCh ain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.jav a:67) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:56 ) at com.sun.grizzly.util.WorkerThreadImpl.run(WorkerThreadImpl.java:169) Sep 19, 2008 2:29:40 PM com.noelios.restlet.http.HttpServerConverter commit WARNING: Unable to send error response java.io.IOException: An established connection was aborted by the software in your host machine at sun.nio.ch.SocketDispatcher.write0(Native Method) at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:33) at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:104) at sun.nio.ch.IOUtil.write(IOUtil.java:75) at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:334) at com.sun.grizzly.util.OutputWriter.flushChannel(OutputWriter.java:105) at com.sun.grizzly.util.OutputWriter.flushChannel(OutputWriter.java:73) at com.noelios.restlet.ext.grizzly.GrizzlyServerCall.writeResponseHead(GrizzlyS erverCall.java:269) at com.noelios.restlet.http.HttpServerCall.sendResponse(HttpServerCall.java:416 ) at com.noelios.restlet.http.HttpServerConverter.commit(HttpServerConverter.java :407) at com.noelios.restlet.http.HttpServerHelper.handle(HttpServerHelper.java:148) at com.noelios.restlet.ext.grizzly.HttpParserFilter.execute(HttpParserFilter.ja va:78) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolCh ain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.jav a:67) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:56 ) at com.sun.grizzly.util.WorkerThreadImpl.run(WorkerThreadImpl.java:169) Regards Jerome Louvel wrote: > Hi Bruce, > > There is an existing bug report covering this exception: > > "File transfer exception on Linux" > http://restlet.tigris.org/issues/show_bug.cgi?id=502 > > It would help if you could attach a simple reproducible test case and maybe > dig into Grizzly extension code if you are more adventurous! > > Best regards, > Jerome > > > -----Message d'origine----- > De : news [mailto:[EMAIL PROTECTED] De la part de Bruce Lee > Envoye : mercredi 2 juillet 2008 22:02 > A : [email protected] > Objet : Random Grizzly IOException > > Hi, > > I'm testing out grizzly connector with the 1.1M4 built and I noticed that > for > requests takes a bit longer to generate the report, sometimes the following > exceptions occurs: > > Jul 2, 2008 4:01:11 PM com.noelios.restlet.http.HttpServerConverter commit > INFO: Exception intercepted > java.io.IOException: Unable to write to the non-blocking channel. Unable to > sele > ct the channel to write to it. Selection timed out. > at > org.restlet.util.ByteUtils$NbChannelOutputStream.write(ByteUtils.java:219) > at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:202) > at sun.nio.cs.StreamEncoder.implWrite(StreamEncoder.java:263) > at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:106) > at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:116) > at java.io.OutputStreamWriter.write(OutputStreamWriter.java:203) > at java.io.Writer.write(Writer.java:140) > at > org.restlet.resource.StringRepresentation.write(StringRepresentation.java:19 > 9) > at > org.restlet.resource.StreamRepresentation.write(StreamRepresentation.java:59 > ) > at > com.noelios.restlet.http.HttpServerCall.writeResponseBody(HttpServerCall.jav > a:545) > at > com.noelios.restlet.http.HttpServerCall.sendResponse(HttpServerCall.java:484 > ) > at > com.noelios.restlet.http.HttpServerConverter.commit(HttpServerConverter.java > :394) > at > com.noelios.restlet.http.HttpServerHelper.handle(HttpServerHelper.java:96) > at > com.noelios.restlet.ext.grizzly.HttpParserFilter.execute(HttpParserFilter.ja > va:68) > at > com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolCh > ain.java:124) > at > com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) > at > com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:75) > at > com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.jav > a:54) > at > com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57 > ) > at > com.sun.grizzly.util.WorkerThreadImpl.run(WorkerThreadImpl.java:154) > > This happens maybe every few other requests and hence renders the extension > unusable. I'm wondering if this is a known issue with the extension or there > is > something I need to configure to avoid hitting this error. > > My environment is as follows: > jdk1.6.0_06 > restlet 1.1m4 > grizzly 1.7.3 (also tried 1.8.0, the same error) > The output is a XML file converted to String object, stored with > StringRepresentation. > > Regards, > >
