I'm using Batik in a Servlet to create images on the fly using SVG. Using
the transcoders (specifically the JPEG), I create a JPEG image and directly
write that image to the servlet response output stream. This all works fine
until a socket closes prematurely.
Unfortunately, sockets close prematurely all the time in browsers if you
click off the page before the image is finished rendering. Sometimes I just
get a socket closed exception from the code and everything continues on
fine. Unfortunately, all too often, I get this:
Exception in thread "Thread-8" java.net.SocketException: Connection reset by
pee
r: socket write error
at java.net.SocketOutputStream.socketWrite(Native Method)
at java.net.SocketOutputStream.write(SocketOutputStream.java:83)
at
org.apache.tomcat.service.http.HttpResponseAdapter.endHeaders(HttpRes
ponseAdapter.java:124)
at
org.apache.tomcat.core.BufferedServletOutputStream.sendHeaders(Buffer
edServletOutputStream.java:126)
at
org.apache.tomcat.core.BufferedServletOutputStream.reallyFlush(Buffer
edServletOutputStream.java:236)
at
org.apache.tomcat.core.BufferedServletOutputStream.write(BufferedServ
letOutputStream.java:185)
at sun.awt.image.codec.JPEGImageEncoderImpl.writeJPEGStream(Native
Metho
d)
at
sun.awt.image.codec.JPEGImageEncoderImpl.encode(JPEGImageEncoderImpl.
java:475)
at
sun.awt.image.codec.JPEGImageEncoderImpl.encode(JPEGImageEncoderImpl.
java:231)
at
sun.awt.image.codec.JPEGImageEncoderImpl.encode(JPEGImageEncoderImpl.
java:238)
at
org.apache.batik.transcoder.image.JPEGTranscoder.writeImage(JPEGTrans
coder.java:72)
at
org.apache.batik.transcoder.image.ImageTranscoder.transcode(ImageTran
scoder.java:260)
at
org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(XMLAbstra
ctTranscoder.java:126)
at com.netdecide.graphic.Chart.createJPEG(Chart.java:166)
at
com.netdecide.graphic.xbeans.ChartXbean.createImage(ChartXbean.java:4
1)
at com.netdecide.graphic.GraphicServer.doGet(GraphicServer.java:78)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:4
05)
at org.apache.tomcat.core.Handler.service(Handler.java:287)
at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372
)
at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.
java:812)
at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:758
)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnectio
n(HttpConnectionHandler.java:213)
at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:
416)
at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java
:501)
at java.lang.Thread.run(Thread.java:484)
org.apache.batik.transcoder.TranscoderException: null
Enclosed Exception:
null
Enclosed Exception:
reading encoded JPEG Stream
2001-10-07 11:22:53 - Ctx( /GraphicServer ): IOException in:
( /GraphicServer +
/graphic + null) Connection reset by peer: socket write error
Exception in thread "Thread-10" java.net.SocketException: Connection reset
by pe
er: socket write error
at java.net.SocketOutputStream.socketWrite(Native Method)
at java.net.SocketOutputStream.write(SocketOutputStream.java:83)
at
org.apache.tomcat.service.http.HttpResponseAdapter.endHeaders(HttpRes
ponseAdapter.java:124)
at
org.apache.tomcat.core.BufferedServletOutputStream.sendHeaders(Buffer
edServletOutputStream.java:126)
at
org.apache.tomcat.core.BufferedServletOutputStream.reallyFlush(Buffer
edServletOutputStream.java:236)
at
org.apache.tomcat.core.BufferedServletOutputStream.write(BufferedServ
letOutputStream.java:185)
at sun.awt.image.codec.JPEGImageEncoderImpl.writeJPEGStream(Native
Metho
d)
at
sun.awt.image.codec.JPEGImageEncoderImpl.encode(JPEGImageEncoderImpl.
java:475)
at
sun.awt.image.codec.JPEGImageEncoderImpl.encode(JPEGImageEncoderImpl.
java:231)
at
sun.awt.image.codec.JPEGImageEncoderImpl.encode(JPEGImageEncoderImpl.
java:238)
at
org.apache.batik.transcoder.image.JPEGTranscoder.writeImage(JPEGTrans
coder.java:72)
at
org.apache.batik.transcoder.image.ImageTranscoder.transcode(ImageTran
scoder.java:260)
at
org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(XMLAbstra
ctTranscoder.java:126)
at com.netdecide.graphic.Chart.createJPEG(Chart.java:166)
at
com.netdecide.graphic.xbeans.ChartXbean.createImage(ChartXbean.java:4
1)
at com.netdecide.graphic.GraphicServer.doGet(GraphicServer.java:78)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
Finished
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:4
05)
at org.apache.tomcat.core.Handler.service(Handler.java:287)
at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372
)
at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.
java:812)
at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:758
)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnectio
n(HttpConnectionHandler.java:213)
at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:
416)
at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java
:501)
at java.lang.Thread.run(Thread.java:484)
An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : unknown exception code occurred at PC=0x77fb16cc
Function name=RtlTraceDatabaseEnumerate
Library=C:\WINNT\System32\ntdll.dll
Current Java thread:
at sun.awt.image.codec.JPEGImageEncoderImpl.writeJPEGStream(Native
Metho
d)
at
sun.awt.image.codec.JPEGImageEncoderImpl.encode(JPEGImageEncoderImpl.
java:475)
at
sun.awt.image.codec.JPEGImageEncoderImpl.encode(JPEGImageEncoderImpl.
java:231)
at
sun.awt.image.codec.JPEGImageEncoderImpl.encode(JPEGImageEncoderImpl.
java:238)
at
org.apache.batik.transcoder.image.JPEGTranscoder.writeImage(JPEGTrans
coder.java:72)
at
org.apache.batik.transcoder.image.ImageTranscoder.transcode(ImageTran
scoder.java:260)
at
org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(XMLAbstra
ctTranscoder.java:126)
at com.netdecide.graphic.Chart.createJPEG(Chart.java:166)
at
com.netdecide.graphic.xbeans.ChartXbean.createImage(ChartXbean.java:4
1)
at com.netdecide.graphic.GraphicServer.doGet(GraphicServer.java:78)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:4
05)
at org.apache.tomcat.core.Handler.service(Handler.java:287)
at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372
)
at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.
java:812)
at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:758
)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnectio
n(HttpConnectionHandler.java:213)
at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:
416)
at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java
:501)
at java.lang.Thread.run(Thread.java:484)
Dynamic libraries:
0x00400000 - 0x00405000 C:\Program Files\jdk1.3.1_01\bin\java.exe
0x77F80000 - 0x77FFB000 C:\WINNT\System32\ntdll.dll
0x77DB0000 - 0x77E0B000 C:\WINNT\system32\ADVAPI32.dll
0x77E80000 - 0x77F35000 C:\WINNT\system32\KERNEL32.DLL
0x77D40000 - 0x77DB0000 C:\WINNT\system32\RPCRT4.DLL
0x78000000 - 0x78046000 C:\WINNT\system32\MSVCRT.dll
0x6D420000 - 0x6D4EE000 C:\Program
Files\jdk1.3.1_01\jre\bin\hotspot\jvm
.dll
0x77E10000 - 0x77E74000 C:\WINNT\system32\USER32.dll
0x77F40000 - 0x77F7C000 C:\WINNT\system32\GDI32.DLL
0x77570000 - 0x775A0000 C:\WINNT\System32\WINMM.dll
0x6D220000 - 0x6D227000 C:\Program Files\jdk1.3.1_01\jre\bin\hpi.dll
0x6D3B0000 - 0x6D3BD000 C:\Program
Files\jdk1.3.1_01\jre\bin\verify.dll
0x6D250000 - 0x6D266000 C:\Program
Files\jdk1.3.1_01\jre\bin\java.dll
0x6D3C0000 - 0x6D3CD000 C:\Program Files\jdk1.3.1_01\jre\bin\zip.dll
0x6D340000 - 0x6D348000 C:\Program Files\jdk1.3.1_01\jre\bin\net.dll
0x75050000 - 0x75058000 C:\WINNT\System32\WSOCK32.dll
0x75030000 - 0x75043000 C:\WINNT\System32\WS2_32.DLL
0x75020000 - 0x75028000 C:\WINNT\System32\WS2HELP.DLL
0x74FD0000 - 0x74FEF000 C:\WINNT\system32\msafd.dll
0x75010000 - 0x75017000 C:\WINNT\System32\wshtcpip.dll
0x785C0000 - 0x785CC000 C:\WINNT\System32\rnr20.dll
0x77980000 - 0x779A4000 C:\WINNT\System32\DNSAPI.DLL
0x77340000 - 0x77353000 C:\WINNT\System32\iphlpapi.dll
0x77520000 - 0x77525000 C:\WINNT\System32\ICMP.DLL
0x77320000 - 0x77337000 C:\WINNT\System32\MPRAPI.DLL
0x75150000 - 0x75160000 C:\WINNT\System32\SAMLIB.DLL
0x75170000 - 0x751BF000 C:\WINNT\System32\NETAPI32.DLL
0x77BE0000 - 0x77BEF000 C:\WINNT\System32\SECUR32.DLL
0x751C0000 - 0x751C6000 C:\WINNT\System32\NETRAP.DLL
0x77950000 - 0x77979000 C:\WINNT\system32\WLDAP32.DLL
0x77A50000 - 0x77B46000 C:\WINNT\system32\OLE32.DLL
0x779B0000 - 0x77A4B000 C:\WINNT\system32\OLEAUT32.DLL
0x773B0000 - 0x773DE000 C:\WINNT\System32\ACTIVEDS.DLL
0x77380000 - 0x773A2000 C:\WINNT\System32\ADSLDPC.DLL
0x77830000 - 0x7783E000 C:\WINNT\System32\RTUTILS.DLL
0x77880000 - 0x7790D000 C:\WINNT\System32\SETUPAPI.DLL
0x77C10000 - 0x77C6D000 C:\WINNT\System32\USERENV.DLL
0x774E0000 - 0x77512000 C:\WINNT\System32\RASAPI32.DLL
0x774C0000 - 0x774D1000 C:\WINNT\System32\RASMAN.DLL
0x77530000 - 0x77552000 C:\WINNT\System32\TAPI32.DLL
0x77B50000 - 0x77BD9000 C:\WINNT\system32\COMCTL32.DLL
0x77C70000 - 0x77CBA000 C:\WINNT\system32\SHLWAPI.DLL
0x77360000 - 0x77379000 C:\WINNT\System32\DHCPCSVC.DLL
0x775A0000 - 0x77625000 C:\WINNT\System32\CLBCATQ.DLL
0x777E0000 - 0x777E8000 C:\WINNT\System32\winrnr.dll
0x6D020000 - 0x6D128000 C:\Program Files\jdk1.3.1_01\jre\bin\awt.dll
0x77800000 - 0x7781D000 C:\WINNT\System32\WINSPOOL.DRV
0x75E60000 - 0x75E7A000 C:\WINNT\System32\IMM32.dll
0x6D1E0000 - 0x6D21B000 C:\Program
Files\jdk1.3.1_01\jre\bin\fontmanager
.dll
0x72800000 - 0x72846000 C:\WINNT\System32\DDRAW.dll
0x728A0000 - 0x728A6000 C:\WINNT\System32\DCIMAN32.dll
0x69000000 - 0x691A6000 C:\WINNT\System32\atio2kai.dll
0x63000000 - 0x63014000 C:\WINNT\System32\SynTPFcs.dll
0x77820000 - 0x77827000 C:\WINNT\system32\VERSION.dll
0x759B0000 - 0x759B6000 C:\WINNT\system32\LZ32.DLL
0x6D190000 - 0x6D1B2000 C:\Program
Files\jdk1.3.1_01\jre\bin\dcpr.dll
0x6D160000 - 0x6D183000 C:\Program Files\jdk1.3.1_01\jre\bin\cmm.dll
0x6D2C0000 - 0x6D2DB000 C:\Program
Files\jdk1.3.1_01\jre\bin\jpeg.dll
0x77920000 - 0x77943000 C:\WINNT\system32\imagehlp.dll
0x72A00000 - 0x72A2D000 C:\WINNT\system32\DBGHELP.dll
0x0D980000 - 0x0D98B000 C:\WINNT\System32\PSAPI.DLL
Local Time = Sun Oct 07 11:22:54 2001
Elapsed Time = 27
#
# The exception above was detected in native code outside the VM
#
# Java VM: Java HotSpot(TM) Client VM (1.3.1_01 mixed mode)
#
# An error report file has been saved as hs_err_pid2176.log.
# Please refer to the file for further information.
#
I'm running Tomcat 3.2.3 with Java 1.3.1_01. Windows 2000, SP2. Internet
Explorer 5.0.
Obviously the whole VM crashes and the Servlet goes down. Not a good thing
for a server. Does anyone have any suggestions?
Thanks,
Scott
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