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.ApplicationFilterChain.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$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at
org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:113)
at java.lang.Thread.run(Thread.java:619)Caused by:
java.net.SocketException: Broken pipe at
java.net.SocketOutputStream.socketWrite0(Native Method) at
java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92) at
java.net.SocketOutputStream.write(SocketOutputStream.java:136) at
org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:750)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:347)
at
org.apache.coyote.http11.InternalOutputBuffer$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.catalina.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!!!
