title: (java.net.SocketException) caught when processing request: Connection reset by peer: socket write error
body: <p>I had a  <code>I/O exception (java.net.SocketException) caught when processing request: Connection reset by peer: socket write error</code> problem When using maven plugin to deploy tomcat
  This problem has haunted me for days. I couldn't use tomcat7:deploy to upload my war file via maven plugin, due to <code>connection reset by peers</code> error. 
  Here's part of  my pom.xml</p>
  
  <pre><code>&lt;build&gt;
          &lt;finalName&gt;Project&lt;/finalName&gt;
      &lt;pluginManagement&gt;
          &lt;plugins&gt;
              &lt;plugin&gt;
                  &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt;
                  &lt;version&gt;2.3.2&lt;/version&gt;
                  &lt;configuration&gt;
                      &lt;source&gt;1.7&lt;/source&gt;
                      &lt;target&gt;1.7&lt;/target&gt;
                  &lt;/configuration&gt;
              &lt;/plugin&gt;
               &lt;plugin&gt;
                  &lt;groupId&gt;org.apache.tomcat.maven&lt;/groupId&gt;
                  &lt;artifactId&gt;tomcat7-maven-plugin&lt;/artifactId&gt;
                   &lt;version&gt;2.2&lt;/version&gt;
                  &lt;configuration&gt;
                      &lt;server&gt;tomcat&lt;/server&gt;
                      &lt;url&gt;http://myserver/manager/text&lt;/url&gt;
                      &lt;username&gt;admin&lt;/username&gt;
                      &lt;password&gt;admin&lt;/password&gt;
                      &lt;path&gt;/plainart&lt;/path&gt;
                  &lt;/configuration&gt;
              &lt;/plugin&gt;
          &lt;/plugins&gt;
  
      &lt;/pluginManagement&gt;
  </code></pre>
  
  <p>and here's the console log</p>
  
  <pre><code>[INFO] Error stacktraces are turned on.
  [INFO] Scanning for projects...
  [WARNING] 
  [WARNING] Some problems were encountered while building the effective model for cn.edu.xmu.plainart:cn.edu.xmu.plainart:war:0.0.1-SNAPSHOT
  [WARNING] 'dependencies.dependency.(groupId:artifactId:type:classifier)' must be unique: cglib:cglib:jar -&gt; version ${cglib.version} vs 2.2.2 @ line 89, column 15
  [WARNING] 
  [WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
  [WARNING] 
  [WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
  [WARNING] 
  [INFO]                                                                         
  [INFO] ------------------------------------------------------------------------
  [INFO] Building cn.edu.xmu.plainart 0.0.1-SNAPSHOT
  [INFO] ------------------------------------------------------------------------
  [INFO] 
  [INFO] &gt;&gt;&gt; tomcat7-maven-plugin:2.2:deploy (default-cli) &gt; package @ cn.edu.xmu.plainart &gt;&gt;&gt;
  [INFO] 
  [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ cn.edu.xmu.plainart ---
  [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
  [INFO] Copying 4 resources
  [INFO] 
  [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ cn.edu.xmu.plainart ---
  [INFO] Nothing to compile - all classes are up to date
  [INFO] 
  [INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ cn.edu.xmu.plainart ---
  [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
  [INFO] Copying 0 resource
  [INFO] 
  [INFO] --- maven-compiler-plugin:2.3.2:testCompile (default-testCompile) @ cn.edu.xmu.plainart ---
  [INFO] Nothing to compile - all classes are up to date
  [INFO] 
  [INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ cn.edu.xmu.plainart ---
  [INFO] 
  [INFO] --- maven-war-plugin:2.2:war (default-war) @ cn.edu.xmu.plainart ---
  [INFO] Packaging webapp
  [INFO] Assembling webapp [cn.edu.xmu.plainart] in [C:\Users\Luna\Documents\GitHub\PiedPiper\Project\target\Project]
  [INFO] Processing war project
  [INFO] Copying webapp resources [C:\Users\Luna\Documents\GitHub\PiedPiper\Project\src\main\webapp]
  [INFO] Webapp assembled in [3376 msecs]
  [INFO] Building war: C:\Users\Luna\Documents\GitHub\PiedPiper\Project\target\Project.war
  [INFO] WEB-INF\web.xml already added, skipping
  [INFO] 
  [INFO] &lt;&lt;&lt; tomcat7-maven-plugin:2.2:deploy (default-cli) &lt; package @ cn.edu.xmu.plainart &lt;&lt;&lt;
  [INFO] 
  [INFO] --- tomcat7-maven-plugin:2.2:deploy (default-cli) @ cn.edu.xmu.plainart ---
  [INFO] Deploying war to http://104.236.166.121:8080/plainart  
  Uploading: http://104.236.166.121:8080/manager/text/deploy?path=%2Fplainart
  
  [INFO] I/O exception (java.net.SocketException) caught when processing request: Connection reset by peer: socket write error
  [INFO] Retrying request
  Uploading: http://104.236.166.121:8080/manager/text/deploy?path=%2Fplainart
  
  [INFO] I/O exception (java.net.SocketException) caught when processing request: Connection reset by peer: socket write error
  [INFO] Retrying request
  Uploading: http://104.236.166.121:8080/manager/text/deploy?path=%2Fplainart
  
  [INFO] I/O exception (java.net.SocketException) caught when processing request: Connection reset by peer: socket write error
  [INFO] Retrying request
  Uploading: http://104.236.166.121:8080/manager/text/deploy?path=%2Fplainart
  
  [INFO] ------------------------------------------------------------------------
  [INFO] BUILD FAILURE
  [INFO] ------------------------------------------------------------------------
  [INFO] Total time: 40.818 s
  [INFO] Finished at: 2015-12-23T10:51:22+08:00
  [INFO] Final Memory: 19M/160M
  [INFO] ------------------------------------------------------------------------
  [ERROR] Failed to execute goal org.apache.tomcat.maven:tomcat7-maven-plugin:2.2:deploy (default-cli) on project cn.edu.xmu.plainart: Cannot invoke Tomcat manager: Connection reset by peer: socket write error -&gt; [Help 1]
  org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.tomcat.maven:tomcat7-maven-plugin:2.2:deploy (default-cli) on project cn.edu.xmu.plainart: Cannot invoke Tomcat manager
      at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216)
      at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
      at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
      at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
      at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
      at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
      at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
      at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
      at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
      at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
      at org.apache.maven.cli.MavenCli.execute(MavenCli.java:862)
      at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:286)
      at org.apache.maven.cli.MavenCli.main(MavenCli.java:197)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:606)
      at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
      at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
      at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
      at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
  Caused by: org.apache.maven.plugin.MojoExecutionException: Cannot invoke Tomcat manager
      at org.apache.tomcat.maven.plugin.tomcat7.AbstractCatalinaMojo.execute(AbstractCatalinaMojo.java:141)
      at org.apache.tomcat.maven.plugin.tomcat7.AbstractWarCatalinaMojo.execute(AbstractWarCatalinaMojo.java:68)
      at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
      at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
      ... 20 more
  Caused by: java.net.SocketException: Connection reset by peer: socket write error
      at java.net.SocketOutputStream.socketWrite0(Native Method)
      at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:113)
      at java.net.SocketOutputStream.write(SocketOutputStream.java:159)
      at org.apache.http.impl.io.AbstractSessionOutputBuffer.write(AbstractSessionOutputBuffer.java:181)
      at org.apache.http.impl.io.ContentLengthOutputStream.write(ContentLengthOutputStream.java:115)
      at org.apache.tomcat.maven.common.deployer.TomcatManager$RequestEntityImplementation.writeTo(TomcatManager.java:880)
      at org.apache.http.entity.HttpEntityWrapper.writeTo(HttpEntityWrapper.java:89)
      at org.apache.http.impl.client.EntityEnclosingRequestWrapper$EntityWrapper.writeTo(EntityEnclosingRequestWrapper.java:108)
      at org.apache.http.impl.entity.EntitySerializer.serialize(EntitySerializer.java:117)
      at org.apache.http.impl.AbstractHttpClientConnection.sendRequestEntity(AbstractHttpClientConnection.java:265)
      at org.apache.http.impl.conn.ManagedClientConnectionImpl.sendRequestEntity(ManagedClientConnectionImpl.java:203)
      at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:236)
      at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:121)
      at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:682)
      at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:486)
      at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863)
      at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
      at org.apache.tomcat.maven.common.deployer.TomcatManager.invoke(TomcatManager.java:742)
      at org.apache.tomcat.maven.common.deployer.TomcatManager.deployImpl(TomcatManager.java:705)
      at org.apache.tomcat.maven.common.deployer.TomcatManager.deploy(TomcatManager.java:388)
      at org.apache.tomcat.maven.plugin.tomcat7.deploy.AbstractDeployWarMojo.deployWar(AbstractDeployWarMojo.java:85)
      at org.apache.tomcat.maven.plugin.tomcat7.deploy.AbstractDeployMojo.invokeManager(AbstractDeployMojo.java:82)
      at org.apache.tomcat.maven.plugin.tomcat7.AbstractCatalinaMojo.execute(AbstractCatalinaMojo.java:132)
      ... 23 more
  [ERROR] 
  [ERROR] Re-run Maven using the -X switch to enable full debug logging.
  [ERROR] 
  [ERROR] For more information about the errors and possible solutions, please read the following articles:
  [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
  </code></pre>
  
  <p>and the remote tomcat-user.xml is configured.</p>
  
  <p>I don't know how to fix this problem. If there's any infomation useful to troubleshooting that I could offer, please let me know.</p>
  
  <p>Thanks in advance</p>