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    #1

    Simple app get "ERROR Compression - Caught exception in doFilter() .... NO CONTENT"

    Hi,

    I am new to SmartGWT. Evaluating the product.

    I can build, run and see examples in the ShowcaseEE sample without any error. Nice sets of examples btw.

    I tried to build my own application based on the simple sample "built-in-ds". I did not find some kind of new project template, so I basically copy sample "built-in-ds" in new folder and rename it to "TestGWT" in all files of the sample.

    I am able to build and start my simple application without error.
    But when I click on the link in the “Development Mode” tab, it open my browser but I keep having a blank page with error in logs (see html file, java file and logs below). I can notice that it seems to try to recompress the application code after the initial attempt to display page and it give the error "ERROR Compression - Caught exception in doFilter() .... NO CONTENT". It happen for "TestGWT.html" and for "TestGWT.nocache.js".



    ******************************
    I use:
    - smartgwtee-5.0p 2015-05-06 (trial version)
    - Google GWT 2.6.1
    - Eclipse Luna 4.4 64 bit
    - Java JDK 1.7 64 bit
    - Chrome 43.0.2357.81 m



    ******************************
    TestGWT.java:
    package com.cgi.client;

    import com.google.gwt.core.client.EntryPoint;
    import com.smartgwt.client.core.KeyIdentifier;
    import com.smartgwt.client.util.PageKeyHandler;
    import com.smartgwt.client.util.Page;
    import com.smartgwt.client.util.SC;
    import com.smartgwt.client.widgets.Label;
    import com.smartgwt.client.widgets.layout.VStack;

    /**
    * Entry point classes define <code>onModuleLoad()</code>.
    */
    public class TestGWT implements EntryPoint {

    /**
    * This is the entry point method.
    */
    public void onModuleLoad() {
    KeyIdentifier debugKey = new KeyIdentifier();
    debugKey.setCtrlKey(true);
    debugKey.setKeyName("Q");

    Page.registerKey(debugKey, new PageKeyHandler() {
    public void execute(String keyName) {
    SC.showConsole();
    }
    });

    VStack vStack = new VStack();
    vStack.setLeft(175);
    vStack.setTop(75);
    vStack.setWidth("70%");
    vStack.setMembersMargin(20);

    Label label = new Label();
    label.setContents("<ul>" +
    "<li>One</li>" +
    "<li>Two</li>" +
    "</ul>");
    vStack.addMember(label);

    vStack.draw();
    }
    }



    ******************************
    testGWT.html:
    <!DOCTYPE html>

    <html>
    <head>
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    <!-- -->
    <!-- Any title is fine -->
    <!-- -->
    <title>TestGWT</title>

    <!-- IMPORTANT : You must set the variable isomorphicDir to [MODULE_NAME]/sc/ so that the SmartGWT resource are
    correctly resolved -->
    <script> var isomorphicDir = "TestGWT/sc/"; </script>

    <!-- -->
    <!-- This script loads your compiled module. -->
    <!-- If you add any GWT meta tags, they must -->
    <!-- be added before this line. -->
    <script type="text/javascript" language="javascript" src="TestGWT/TestGWT.nocache.js"></script>
    </head>

    <!-- -->
    <!-- The body can have arbitrary html, or -->
    <!-- you can leave the body empty if you want -->
    <!-- to create a completely dynamic UI. -->
    <!-- -->
    <body>

    <!--load the datasources-->
    <!-- <script src="TestGWT/sc/DataSourceLoader?dataSource=dmversion"></script> -->

    <!-- OPTIONAL: include this if you want history support -->
    <iframe src="javascript:''" id="__gwt_historyFrame" tabIndex='-1' style="position:absolute;width:0;height:0;border:0"></iframe>

    </body>
    </html>



    ******************************
    Logs:
    Running GPE launcher for GWT-2.6.x version.
    Runing CodeServer with parameters: [-noprecompile, -port, 9876, -bindAddress, 127.0.0.1, com.cgi.testGWT]
    workDir: C:\Users\TTSSH7~1\AppData\Local\Temp\gwt-codeserver-8578249528026765591.tmp
    Module setup completed in 952 ms

    The code server is ready.
    Next, visit: http://127.0.0.1:9876/
    [WARN] Server class 'com.isomorphic.base.InitListener' could not be found in the web app, but was found on the system classpath
    [WARN] Adding classpath entry 'file:/X:/smartgwtee-5.0p/lib/isomorphic_core_rpc.jar' to the web app classpath for this session
    For additional info see: file:/X:/gwt-2.6.1/doc/helpInfo/webAppClassPath.html
    [WARN] Server class 'org.apache.log4j.Priority' could not be found in the web app, but was found on the system classpath
    [WARN] Adding classpath entry 'file:/X:/smartgwtee-5.0p/lib/log4j-1.2.15.jar' to the web app classpath for this session
    For additional info see: file:/X:/gwt-2.6.1/doc/helpInfo/webAppClassPath.html
    ISC: Configuring log4j from: file:/W:/testGWT/war/WEB-INF/classes/log4j.isc.config.xml
    [WARN] Server class 'org.apache.commons.collections.map.LinkedMap' could not be found in the web app, but was found on the system classpath
    [WARN] Adding classpath entry 'file:/X:/smartgwtee-5.0p/lib/commons-collections-3.2.1.jar' to the web app classpath for this session
    For additional info see: file:/X:/gwt-2.6.1/doc/helpInfo/webAppClassPath.html
    === 2015-06-09 08:38:24,819 [main] INFO ISCInit - Isomorphic SmartClient/SmartGWT Framework - Initializing
    === 2015-06-09 08:38:24,820 [main] INFO ConfigLoader - Attempting to load framework.properties from CLASSPATH
    [WARN] Server class 'isc.org.apache.oro.text.perl.Perl5Util' could not be found in the web app, but was found on the system classpath
    [WARN] Adding classpath entry 'file:/X:/smartgwtee-5.0p/lib/isc-jakarta-oro-2.0.6.jar' to the web app classpath for this session
    For additional info see: file:/X:/gwt-2.6.1/doc/helpInfo/webAppClassPath.html
    === 2015-06-09 08:38:25,130 [main] INFO ConfigLoader - Successfully loaded framework.properties from CLASSPATH at location: jar:file:/X:/smartgwtee-5.0p/lib/isomorphic_core_rpc.jar!/framework.properties
    === 2015-06-09 08:38:25,130 [main] INFO ConfigLoader - Attempting to load project.properties from CLASSPATH
    === 2015-06-09 08:38:25,140 [main] INFO ConfigLoader - Unable to locate project.properties in CLASSPATH
    === 2015-06-09 08:38:25,140 [main] INFO ConfigLoader - Successfully loaded isc_interfaces.properties from CLASSPATH at location: jar:file:/X:/smartgwtee-5.0p/lib/isomorphic_core_rpc.jar!/isc_interfaces.properties
    === 2015-06-09 08:38:25,140 [main] INFO ConfigLoader - Attempting to load server.properties from CLASSPATH
    === 2015-06-09 08:38:25,180 [main] INFO ConfigLoader - Successfully loaded server.properties from CLASSPATH at location: file:/W:/testGWT/war/WEB-INF/classes/server.properties
    === 2015-06-09 08:38:25,180 [main] INFO Logger - Logging system started.
    === 2015-06-09 08:38:25,180 [main] DEBUG ConfigParser - Matched var name: gwtModuleName
    === 2015-06-09 08:38:25,190 [main] DEBUG ConfigParser - value after substitution: TestGWT/sc
    === 2015-06-09 08:38:25,190 [main] INFO ISCInit - Auto-detected webRoot - using: W:\testGWT\war
    === 2015-06-09 08:38:25,190 [main] INFO ISCInit - Isomorphic SmartClient/SmartGWT Framework (v10.0p_2015-05-06/EVAL Deployment 2015-05-06) - Initialization Complete
    [WARN] Server class 'org.hibernate.proxy.HibernateProxy' could not be found in the web app, but was found on the system classpath
    [WARN] Adding classpath entry 'file:/X:/smartgwtee-5.0p/lib/hibernate3.jar' to the web app classpath for this session
    For additional info see: file:/X:/gwt-2.6.1/doc/helpInfo/webAppClassPath.html
    [WARN] Server class 'net.sf.cglib.transform.impl.InterceptFieldEnabled' could not be found in the web app, but was found on the system classpath
    [WARN] Adding classpath entry 'file:/X:/smartgwtee-5.0p/lib/cglib-2.2.jar' to the web app classpath for this session
    For additional info see: file:/X:/gwt-2.6.1/doc/helpInfo/webAppClassPath.html
    [WARN] Server class 'com.isomorphic.compression.ServletCompression' could not be found in the web app, but was found on the system classpath
    [WARN] Adding classpath entry 'file:/X:/smartgwtee-5.0p/lib/isomorphic_compression.jar' to the web app classpath for this session
    For additional info see: file:/X:/gwt-2.6.1/doc/helpInfo/webAppClassPath.html
    log4j:WARN No appenders could be found for logger (org.apache.jasper.compiler.JspRuntimeContext).
    log4j:WARN Please initialize the log4j system properly.
    Invoking Linker SmartGwtScriptInjector
    Augmenting TestGWT.nocache.js to manually load the following script tags:
    sc/initsc.js
    sc/modules/ISC_Core.js
    sc/modules/ISC_Foundation.js
    sc/modules/ISC_Containers.js
    sc/modules/ISC_Grids.js
    sc/modules/ISC_Forms.js
    sc/modules/ISC_RichTextEditor.js
    sc/modules/ISC_Calendar.js
    sc/modules/ISC_DataBinding.js
    sc/skins/Enterprise/load_skin.js
    Creating nocache file: W:\testGWT\war\TestGWT\TestGWT.nocache.js
    To compile the module 'TestGWT' , visit:
    http://127.0.0.1:9876/recompile/TestGWT?_callback=cback&user.agent=safari,gecko1_8,ie8,ie9,ie10
    [WARN] Server class 'org.apache.commons.fileupload.FileItemFactory' could not be found in the web app, but was found on the system classpath
    [WARN] Adding classpath entry 'file:/X:/smartgwtee-5.0p/lib/commons-fileupload-1.2.1.jar' to the web app classpath for this session
    For additional info see: file:/X:/gwt-2.6.1/doc/helpInfo/webAppClassPath.html
    === 2015-06-09 08:38:52,949 [1-34] DEBUG ConfigParser - Matched var name: debug
    === 2015-06-09 08:38:52,949 [1-34] DEBUG ConfigParser - value after substitution: true
    === 2015-06-09 08:38:52,959 [1-34] DEBUG ConfigParser - Matched var name: gwtModuleName
    === 2015-06-09 08:38:52,959 [1-34] DEBUG ConfigParser - value after substitution: TestGWT/sc
    === 2015-06-09 08:38:52,967 [1-34] INFO Compression - /TestGWT.html: 0 -> 20 bytes
    === 2015-06-09 08:38:52,968 [1-34] ERROR Compression - Caught exception in doFilter() - for URI: /TestGWT.html
    java.lang.IllegalStateException: NO CONTENT
    at org.eclipse.jetty.http.HttpGenerator.addContent(HttpGenerator.java:176)
    at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:155)
    at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:107)
    at java.io.ByteArrayOutputStream.writeTo(ByteArrayOutputStream.java:154)
    at com.isomorphic.compression.ServletCompression.compressAndSend(ServletCompression.java:159)
    at com.isomorphic.servlet.CompressionFilter._doFilter(CompressionFilter.java:387)
    at com.isomorphic.servlet.BaseFilter.doFilter(BaseFilter.java:83)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1474)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
    at org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:68)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
    at org.eclipse.jetty.server.Server.handle(Server.java:370)
    at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
    at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949)
    at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011)
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
    at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
    at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
    at java.lang.Thread.run(Thread.java:722)

    === 2015-06-09 08:38:53,142 [1-37] INFO Compression - /TestGWT/TestGWT.nocache.js: 10220 -> 3656 bytes
    binding: user.agent=safari
    Compiling module com.cgi.testGWT
    Compiling 1 permutation
    Compiling permutation 0...
    Source Maps Enabled
    Compile of permutations succeeded
    Linking into C:\Users\TTSSH7~1\AppData\Local\Temp\gwt-codeserver-8578249528026765591.tmp\com.cgi.testGWT\compile-2\war\TestGWT; Writing extras to C:\Users\TTSSH7~1\AppData\Local\Temp\gwt-codeserver-8578249528026765591.tmp\com.cgi.testGWT\compile-2\extras\TestGWT
    Invoking Linker Cross-Site-Iframe
    Ignoring the following script tags in the gwt.xml file
    sc/initsc.js
    sc/modules/ISC_Core.js
    sc/modules/ISC_Foundation.js
    sc/modules/ISC_Containers.js
    sc/modules/ISC_Grids.js
    sc/modules/ISC_Forms.js
    sc/modules/ISC_RichTextEditor.js
    sc/modules/ISC_Calendar.js
    sc/modules/ISC_DataBinding.js
    sc/skins/Enterprise/load_skin.js

    Invoking Linker SmartGwtScriptInjector
    Augmenting TestGWT.nocache.js to manually load the following script tags:
    sc/initsc.js
    sc/modules/ISC_Core.js
    sc/modules/ISC_Foundation.js
    sc/modules/ISC_Containers.js
    sc/modules/ISC_Grids.js
    sc/modules/ISC_Forms.js
    sc/modules/ISC_RichTextEditor.js
    sc/modules/ISC_Calendar.js
    sc/modules/ISC_DataBinding.js
    sc/skins/Enterprise/load_skin.js
    Link succeeded
    Compilation succeeded -- 15.737s
    Compile completed in 16047 ms
    === 2015-06-09 08:39:09,510 [1-39] INFO Compression - /TestGWT.html: 0 -> 20 bytes
    === 2015-06-09 08:39:09,510 [1-39] ERROR Compression - Caught exception in doFilter() - for URI: /TestGWT.html
    java.lang.IllegalStateException: NO CONTENT
    at org.eclipse.jetty.http.HttpGenerator.addContent(HttpGenerator.java:176)
    at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:155)
    at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:107)
    at java.io.ByteArrayOutputStream.writeTo(ByteArrayOutputStream.java:154)
    at com.isomorphic.compression.ServletCompression.compressAndSend(ServletCompression.java:159)
    at com.isomorphic.servlet.CompressionFilter._doFilter(CompressionFilter.java:387)
    at com.isomorphic.servlet.BaseFilter.doFilter(BaseFilter.java:83)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1474)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
    at org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:68)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
    at org.eclipse.jetty.server.Server.handle(Server.java:370)
    at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
    at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949)
    at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011)
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
    at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
    at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
    at java.lang.Thread.run(Thread.java:722)

    === 2015-06-09 08:39:09,643 [1-36] INFO Compression - /TestGWT/TestGWT.nocache.js: 0 -> 36 bytes
    === 2015-06-09 08:39:09,644 [1-36] ERROR Compression - Caught exception in doFilter() - for URI: /TestGWT/TestGWT.nocache.js
    java.lang.IllegalStateException: NO CONTENT
    at org.eclipse.jetty.http.HttpGenerator.addContent(HttpGenerator.java:176)
    at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:155)
    at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:107)
    at java.io.ByteArrayOutputStream.writeTo(ByteArrayOutputStream.java:154)
    at com.isomorphic.compression.ServletCompression.compressAndSend(ServletCompression.java:159)
    at com.isomorphic.servlet.CompressionFilter._doFilter(CompressionFilter.java:387)
    at com.isomorphic.servlet.BaseFilter.doFilter(BaseFilter.java:83)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1474)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
    at org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:68)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
    at org.eclipse.jetty.server.Server.handle(Server.java:370)
    at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
    at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949)
    at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011)
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
    at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
    at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
    at java.lang.Thread.run(Thread.java:722)
    Tags: None
    #2
    From the logs, it looks like your host .html file (TestGWT.html) is zero-length. That won't work.

    Comment

      #3
      TestGWT.html is not empty. It contains basically the same thing the "built-in-ds" sample. See original post for html content.

      Comment

        #4
        We did see what you *think* is in TestGWT.html, but, look at the actual logs:

        Code:
        === 2015-06-09 08:38:52,967 [1-34] INFO Compression - /TestGWT.html: 0 -> 20 bytes
        This means TestGWT.html is an empty file by the time you have actually started up DevMode. Could be some kind of issue with not having saved changes you made to the file, or some other run configuration issue.

        Comment

          #5
          Hi Isomorphic,

          there are some threads here regarding this issue. I have it as well in Win 8.1 FF26 Dev mode (only here), but it does not have any negative effect besides cluttering the log file.

          Best regards
          Blama

          Comment

            #6
            Just want to add come new input. If I build the app while the server is running and refresh the page in the browser, I can see page with my grid.

            I get conpression/NO CONTENT error even in SmartGWT files. Example:
            === 2015-06-11 09:17:23,405 [3-29] INFO Compression - /TestGWT/sc/skins/Enterprise/skin_styles.css: 0 -> 20 bytes
            === 2015-06-11 09:17:23,405 [3-29] ERROR Compression - Caught exception in doFilter() - for URI: /TestGWT/sc/skins/Enterprise/skin_styles.css
            java.lang.IllegalStateException: NO CONTENT
            at org.eclipse.jetty.http.HttpGenerator.addContent(HttpGenerator.java:176)
            at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:155)
            at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:107)
            at java.io.ByteArrayOutputStream.writeTo(ByteArrayOutputStream.java:154)
            at com.isomorphic.compression.ServletCompression.compressAndSend(ServletCompression.java:159)
            at com.isomorphic.servlet.CompressionFilter._doFilter(CompressionFilter.java:387)
            at com.isomorphic.servlet.BaseFilter.doFilter(BaseFilter.java:83)
            at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1474)
            at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499)
            at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
            at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
            at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
            at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
            at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428)
            at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
            at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
            at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
            at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
            at org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:68)
            at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
            at org.eclipse.jetty.server.Server.handle(Server.java:370)
            at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
            at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949)
            at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011)
            at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
            at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
            at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
            at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)
            at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
            at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
            at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
            at java.lang.Thread.run(Thread.java:722)


            I also get 404 error on the data source download servlet and it is properly declared in the web.xml file.
            === 2015-06-11 09:17:23,010 [3-28] DEBUG Compression - /TestGWT/sc/DataSourceLoader: WrapResponse dictates no compression.
            [WARN] 404 - GET /TestGWT/sc/DataSourceLoader?dataSource=dmversion (127.0.0.1) 1392 bytes
            Request headers
            Host: 127.0.0.1:8888
            Connection: keep-alive
            Cache-Control: max-age=0
            Accept: */*
            User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.124 Safari/537.36
            Referer: http://127.0.0.1:8888/TestGWT.html
            Accept-Encoding: gzip, deflate, sdch
            Accept-Language: en-US,en;q=0.8
            Cookie: GLog=%7B%0D%20%20%20%20trackRPC%3Atrue%2C%20%0D%20%20%20%20pageGUID%3A%228F8098BD-D8AF-442A-A853-B54E1FA7B78F%22%2C%20%0D%20%20%20%20priorityDefaults%3A%7B%0D%20%20%20%20%20%20%20%20sgwtInternal%3A1%2C%20%0D%20%20%20%20%20%20%20%20RPCManager%3A5%2C%20%0D%20%20%20%20%20%20%20%20RPCManagerResponse%3A5%2C%20%0D%20%20%20%20%20%20%20%20fetchTrace%3A5%2C%20%0D%20%20%20%20%20%20%20%20FileLoader%3A5%0D%20%20%20%20%7D%2C%20%0D%20%20%20%20defaultPriority%3A3%2C%20%0D%20%20%20%20left%3A0%2C%20%0D%20%20%20%20top%3A0%2C%20%0D%20%20%20%20width%3A1600%2C%20%0D%20%20%20%20height%3A810%0D%7D; isc_cState=ready
            Response headers
            Content-Type: text/html;charset=ISO-8859-1
            Cache-Control: must-revalidate,no-cache,no-store
            Content-Length: 1392

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