Have a look at the flush options on
http://tomcat.apache.org/connectors-doc/reference/apache.html
and maybe at the various timeouts at
http://tomcat.apache.org/connectors-doc/reference/workers.html
There is also a Timeout directive for Apache httpd.
If you can't find it out, post your config and more details: in case you
can reproduce, you can set JkLogLevel to trace and we'll most likely
see, why mod_jk closes the connection to Tomcat (if so). Packet dumps
are also helpful.
There is no known issue, apart from the need of correct flush settings
for streaming.
Regards,
Rainer
MAHAINDRA Ketut wrote:
Hello all,
I have a problem when using Tomcat 5.5.23 and apache/mod_jk 1.2.23.
I have a piece of code that will stream a file when a download request
is made by a user.
...
response.setContentType("application/octet-stream");
response.setContentLength((int)fDownload.length());
response.setHeader("Content-Disposition", "attachment; filename=\"" +
fromFileName + "\"");
// read the fromFile and write to output stream
FileInputStream fis = new FileInputStream(location + "/" +
fromFileName); //$NON-NLS-1$
BufferedOutputStream bos = new
BufferedOutputStream(response.getOutputStream());
int iLen =0;
byte[] buffer = new byte[4096];
while ((iLen = fis.read(buffer)) != -1) {
bos.write(buffer,0,iLen);
}
fis.close();
bos.close();
...
When the application is accessed directly through Tomcat on port 8080,
there is no problem.
But when we put apache / mod_jk to provide connection to tomcat, the
stream is disconnected prematurely at around 450K with the following
exceptions logged in catalina.out.
ClientAbortException: java.io.IOException
at
org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.j
ava: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(CoyoteOutputStrea
m.java:89)
at
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
at
java.io.BufferedOutputStream.write(BufferedOutputStream.java:109)
at
com.gemalto.tools.lkms.actions.ManageVersionAction.downloadFile(Unknown
Source)
at
com.gemalto.tools.lkms.actions.ManageVersionAction.execute(Unknown
Source)
at
org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAc
tion.java:58)
at
org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractE
xecuteAction.java:67)
at
org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommand
Base.java:51)
at
org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
at
org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.jav
a:304)
at
org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
at
org.apache.struts.chain.ComposableRequestProcessor.process(ComposableReq
uestProcessor.java:283)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:269)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:188)
at
com.gemalto.tools.lkms.util.SetCharacterEncodingFilter.doFilter(Unknown
Source)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:215)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:188)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
e.java:210)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
e.java:174)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
:117)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:542
)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java:108)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:1
51)
at
org.apache.coyote.ajp.AjpAprProcessor.process(AjpAprProcessor.java:444)
at
org.apache.coyote.ajp.AjpAprProtocol$AjpConnectionHandler.process(AjpApr
Protocol.java:472)
at
org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1286)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.io.IOException
at
org.apache.coyote.ajp.AjpAprProcessor.flush(AjpAprProcessor.java:1197)
at
org.apache.coyote.ajp.AjpAprProcessor$SocketOutputBuffer.doWrite(AjpAprP
rocessor.java:1282)
at org.apache.coyote.Response.doWrite(Response.java:560)
at
org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.j
ava:361)
... 36 more
Is there any issue on the code ?
Or is it a known mod_jk issue ? Or is it perhaps a configuration issue
on my side ?
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