Apache HttpClient "Target Server Failed to response" exception.

[Em Aiy]

I have a webservice which is accepting a POST method with XML. It is working fine then at some random occasion, it fails to communicate to the server throwing IOException with message `The target server failed to respond`. The subsequent calls work fine.

It happens mostly, when i make some calls and then leave my application idle for like 10-15 min. the first call which i make after that returns this error.

I tried couple of things ...

I setup the retry handler like

    HttpRequestRetryHandler retryHandler = new HttpRequestRetryHandler() {
				
				public boolean retryRequest(IOException e, int retryCount, HttpContext httpCtx) {
					if (retryCount >= 3){
						Logger.warn(CALLER, "Maximum tries reached, exception would be thrown to outer block");
						return false;
					}
					if (e instanceof org.apache.http.NoHttpResponseException){
						Logger.warn(CALLER, "No response from server on "+retryCount+" call");
						return true;
					}
					return false;
				}
			};
			
			httpPost.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, retryHandler);

but this retey never got called. (yes i am using right instanceof clause). While debugging this class never being called.

I even tried setting up

HttpProtocolParams.setUseExpectContinue(httpClient.getParams(), false);

but no use. Can someone suggest what can i do now?


**IMPORTANT**
Besides figuring out why i am getting exception, one of the important concern i have is why isn't the retryhandler working here?