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POHttpClient on Android : NoHttpResponseException through UMTS/3G
 

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    <p>I have got my android app that uses HttpClient to reach my servlet deployed on my Tomcat. It is installed on my HTC Magic.</p> <p>If I launch it when connected on Wifi : it works. If I launch it when connected to 3G (GSM data network) : it doesn't work but my servlet is reached. In other word, it seems that my phone never get the response :</p> <pre><code>Technical problem while receiving response. org.apache.http.NoHttpResponseException: The target server failed to respond at org.apache.http.impl.conn.DefaultResponseParser.parseHead(DefaultResponseParser.java:85) at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:174) at org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:179) at org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:235) at org.apache.http.impl.conn.AbstractClientConnAdapter.receiveResponseHeader(AbstractClientConnAdapter.java:259) at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:279) at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:121) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:410) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465) </code></pre> <p>If I use the web browser through 3G to activate the test HTML page that is packaged with my servlet, it reaches the same servlet with success (the page receives the response).</p> <p>How could I debug HttpClient or ask it to dump everything ?</p> <p>Does someone have a clue on what's going on ?</p>
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    1. COHave you checked your server logs to see if the request is making it over the wire? If so, do your logs tell you anything (e.g., server-side error)?
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    2. COThe server gets the request (very quickly) and gives a response successfully, in the very same way it does for request coming when on wifi. It would be more efficient to be able to debug HttpClient... The exception is thrown after a long time, more or less 10 minutes, so I guess, there is really nothing that comes back to the device. If true, something is loosing my response in the air. Could my GSM network have some filtering ?
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    3. COInterestingly, there is a squid server installed on proxy.cwg.net that seems to be the cause. But why does it work with the test HTML page and not with the HttpClient under same condition ?
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