title: Gmail API returning `com.google.appengine.api.urlfetch.ResponseTooLargeException` exception
body: <p>Gmail get Message API is returning <code>com.google.appengine.api.urlfetch.ResponseTooLargeException</code> exception when there is an attachment with more than 15MB. Is there a way to truncate and fetch the message without an Exception or to ignore the attachment when there is huge attachment.</p>
  
  <pre><code>Message message = service.users().messages().get(userId, messageId).setFormat("raw").execute();
  
  byte[] emailBytes = Base64.decodeBase64(message.getRaw());
  </code></pre>
  
  <p>Below is the stack trace of the exception</p>
  
  <pre><code>com.google.appengine.api.urlfetch.ResponseTooLargeException: The response from url https://www.googleapis.com/gmail/v1/users/me/messages/15174dfidf6bafa31?format=raw was too large.
  at com.google.appengine.api.urlfetch.URLFetchServiceImpl.fetch(URLFetchServiceImpl.java:59)
  at com.google.apphosting.utils.security.urlfetch.URLFetchServiceStreamHandler$Connection.fetchResponse(URLFetchServiceStreamHandler.java:543)
  at com.google.apphosting.utils.security.urlfetch.URLFetchServiceStreamHandler$Connection.getInputStream(URLFetchServiceStreamHandler.java:422)
  at com.google.apphosting.utils.security.urlfetch.URLFetchServiceStreamHandler$Connection.getResponseCode(URLFetchServiceStreamHandler.java:275)
  at com.google.api.client.http.javanet.NetHttpResponse.&lt;init&gt;(NetHttpResponse.java:36)
  at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:94)
  at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:965)
  at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:419)
  at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:352)
  at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:469)
  at com.motorola.uoi.datacollector.gmail.GmailReviewsHandler.getMessageDetails(GmailReviewsHandler.java:390)
  at com.motorola.uoi.datacollector.gmail.GmailReviewsHandler.pullThreads(GmailReviewsHandler.java:294)
  at com.motorola.uoi.datacollector.gmail.GmailReviewsHandler.process(GmailReviewsHandler.java:185)
  at com.motorola.uoi.datacollector.basesource.ExtractProcessServlet.process(ExtractProcessServlet.java:43)
  at com.motorola.uoi.datacollector.basesource.ExtractProcessServlet.doGet(ExtractProcessServlet.java:28)
  at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
  at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
  at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
  at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
  at com.google.appengine.tools.appstats.AppstatsFilter.doFilter(AppstatsFilter.java:143)
  at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
  at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:125)
  at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
  at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:37)
  at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
  at com.google.apphosting.utils.servlet.JdbcMySqlConnectionCleanupFilter.doFilter(JdbcMySqlConnectionCleanupFilter.java:60)
  at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
  at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
  at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
  at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
  at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
  at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
  at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
  at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
  at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:260)
  at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
  at org.mortbay.jetty.Server.handle(Server.java:326)
  at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
  at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
  at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:78)
  at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
  at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:148)
  at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:469)
  at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:437)
  at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:444)
  at com.google.tracing.CurrentContext.runInContext(CurrentContext.java:256)
  at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:308)
  at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:300)
  at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:441)
  at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:235)
  at java.lang.Thread.run(Thread.java:745) 
  </code></pre>