--- connectors/jk/java/org/apache/jk/common/ChannelNioSocket.java	2007-03-05 16:27:34.000000000 +0100
+++ connectors/jk/java/org/apache/jk/common/ChannelNioSocket.java	2009-06-09 11:02:33.000000000 +0200
@@ -55,6 +55,7 @@
 import org.apache.coyote.Request;
 import org.apache.coyote.RequestGroupInfo;
 import org.apache.coyote.RequestInfo;
+import org.apache.coyote.ActionCode;
 import org.apache.tomcat.util.threads.ThreadPool;
 import org.apache.tomcat.util.threads.ThreadPoolRunnable;
 
@@ -853,6 +854,7 @@
                     status= invoke( recv, ep );
                     if( status != JkHandler.OK ) {
                         log.warn("processCallbacks status " + status );
+                        ep.action(ActionCode.ACTION_CLOSE, ep.getRequest().getResponse());
                         return false;
                     }
                     synchronized(this) {
--- connectors/jk/java/org/apache/jk/common/ChannelSocket.java	2007-03-05 16:27:34.000000000 +0100
+++ connectors/jk/java/org/apache/jk/common/ChannelSocket.java	2009-06-09 11:06:06.000000000 +0200
@@ -46,6 +46,7 @@
 import org.apache.coyote.Request;
 import org.apache.coyote.RequestGroupInfo;
 import org.apache.coyote.RequestInfo;
+import org.apache.coyote.ActionCode;
 import org.apache.tomcat.util.threads.ThreadPool;
 import org.apache.tomcat.util.threads.ThreadPoolRunnable;
 
@@ -703,6 +704,7 @@
                 status= this.invoke( recv, ep );
                 if( status!= JkHandler.OK ) {
                     log.warn("processCallbacks status " + status );
+                    ep.action(ActionCode.ACTION_CLOSE, ep.getRequest().getResponse());
                     break;
                 }
             }
--- connectors/jk/java/org/apache/jk/common/HandlerRequest.java	2007-03-05 16:27:35.000000000 +0100
+++ connectors/jk/java/org/apache/jk/common/HandlerRequest.java	2009-06-09 11:02:33.000000000 +0200
@@ -265,8 +265,16 @@
                                  ((Request)ep.getRequest()).unparsedURI());
                 }
             } catch( Exception ex ) {
+                /* If we are here it is because we have a bad header or something like that */
                 log.error( "Error decoding request ", ex );
                 msg.dump( "Incomming message");
+                Response res=ep.getRequest().getResponse();
+                if ( res==null ) {
+                    res=new Response();
+                    ep.getRequest().setResponse(res);
+                }
+                res.setMessage("Bad Request");
+                res.setStatus(400);
                 return ERROR;
             }