On 19/05/2011 11:44, Rob GB wrote:
>
> Hi all,
> I have a file download servlet running on Tomcat, the code is
>
> public void service(HttpServletRequest request, HttpServletResponse
> response) throws IOException { byte buf[] = new byte[1024 * 4];
> try { File file = new File(realFilename); int size =
> (int) file.length(); BufferedInputStream realFile = new
> BufferedInputStream(new FileInputStream(file)); OutputStream out =
> response.getOutputStream(); response.setContentLength(size);
> while (true) { int count = realFile.read(buf);
> if (count == -1) { break; }
> out.write(buf, 0, count); } out.flush(); }
> catch (FileNotFoundException e) { logger.error("Stream download
> failed, file not found: " + realFilename, e);
> response.sendError(404); } catch (Exception e) {
> logger.error("DownloadException:", e); } }
> However once in a while I get an error that prevents files from being
> downloaded:
>
> DownloadException: java.net.SocketException: Broken pipe at
> org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:366)
> at
> org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432)
> at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:347) at
> org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:392)
> at
> org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:381)
> at
> org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
> at org.apache.catalina.core.Ap
plicationFilterChain.doFilter(ApplicationFilterChain.java:188) at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at
org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorker
Thread.java:113) at java.lang.Thread.run(Thread.java:619)Caused by:
java.net.SocketException: Broken pipe at
java.net.SocketOutputStream.socketWrite0(Native Method) at
java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92) at
java.net.SocketOutputStream.write(SocketOutputStream.java:136) at
org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:750)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:347)
at
org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:773)
at
org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:118)
at
org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:583)
at org.apache.coyote.Response.doWrite(Response.java:560) at
org.apache.ca
talina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:361) ...
23 more
> My tomcat connector has this settings:
> <Connector port="8968" disableUploadTimeout="true"
> enableLookups="false" acceptCount="10000"
> connectionTimeout="120000" maxKeepAliveRequests="20"
> maxSpareThreads="300" maxThreads="300"
> minSpareThreads="100" strategy="ms"
> threadPriority="java.lang.Thread#MAX_PRIORITY"
> tcpNoDelay="true"
> protocol="org.apache.coyote.http11.Http11Protocol"
> compression="on" server=""
> compressableMimeType="text/html,text/xml,text/plain,text/css,text/javascript"
> clockless="false"/>
>
> How can I prevent such an error?
> Thanks!!!No-one is going to read all that unformatted code. Try again. p
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