*) Displaying an proxy error page instead of a white page if the server has closed

the connection before yacy was able to receive the http response line
   See: http://www.yacy-forum.de/viewtopic.php?p=8866#8866
        http://www.yacy-forum.de/viewtopic.php?t=704

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@630 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/http/httpdProxyHandler.java

@@ -478,9 +478,17 @@ public final class httpdProxyHandler extends httpdAbstractHandler implements htt
             // send request
             res = remote.GET(remotePath, requestHeader);
             conProp.put(httpd.CONNECTION_PROP_CLIENT_REQUEST_HEADER,requestHeader);
-            long contentLength = res.responseHeader.contentLength();
+            
+            // request has been placed and result has been returned. work off response            
+            String[] resStatus = res.status.split(" ");
+            
+            // determine if it's an internal error of the httpc
+            if (res.responseHeader.size() == 0) {
+                throw new Exception((resStatus.length > 1) ? resStatus[1] : "Internal httpc error");
+            }
             
             // if the content length is not set we have to use chunked transfer encoding
+            long contentLength = res.responseHeader.contentLength();
             if (contentLength < 0) {
                 // according to http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
                 // a 204,304 message must not contain a message body.
@@ -546,9 +554,6 @@ public final class httpdProxyHandler extends httpdAbstractHandler implements htt
             // remove hop by hop headers
             this.removeHopByHopHeaders(res.responseHeader);
             
-            // request has been placed and result has been returned. work off response            
-            String[] resStatus = res.status.split(" ");
-            
             // sending the respond header back to the client
             if (chunkedOut != null) {
                 res.responseHeader.put(httpHeader.TRANSFER_ENCODING, "chunked");