added checks for request thread interruption in order to cancel it properly

Author: felipesabino

src/com/loopj/android/http/AsyncHttpRequest.java

@@ -59,12 +59,18 @@ public void run() {
             }
         }
     }
-
+    
     private void makeRequest() throws IOException {
-        HttpResponse response = client.execute(request, context);
-        if(responseHandler != null) {
-            responseHandler.sendResponseMessage(response);
-        }
+    	if(!Thread.currentThread().isInterrupted()) {
+    		HttpResponse response = client.execute(request, context);
+    		if(!Thread.currentThread().isInterrupted()) {
+    			if(responseHandler != null) {
+    				responseHandler.sendResponseMessage(response);
+    			}
+    		} else{
+    			//TODO: should raise InterruptedException? this block is reached whenever the request is cancelled before its response is received
+    		}
+    	}
     }
 
     private void makeRequestWithRetries() throws ConnectException {
@@ -86,7 +92,7 @@ private void makeRequestWithRetries() throws ConnectException {
                 // http://code.google.com/p/android/issues/detail?id=5255
                 cause = new IOException("NPE in HttpClient" + e.getMessage());
                 retry = retryHandler.retryRequest(cause, ++executionCount, context);
-            }
+            } 
         }
 
         // no retries left, crap out with exception