Merge pull request android-async-http#171 from daveyfong/connection-hang-fix

Fixed connection hang when host unreachable

Author: loopj

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

@@ -28,12 +28,13 @@
 import java.net.SocketException;
 import java.net.UnknownHostException;
 import java.util.HashSet;
+import java.util.Iterator;
 
 import javax.net.ssl.SSLHandshakeException;
 
 import org.apache.http.NoHttpResponseException;
-import org.apache.http.client.methods.HttpUriRequest;
 import org.apache.http.client.HttpRequestRetryHandler;
+import org.apache.http.client.methods.HttpUriRequest;
 import org.apache.http.protocol.ExecutionContext;
 import org.apache.http.protocol.HttpContext;
 
@@ -73,10 +74,10 @@ public boolean retryRequest(IOException exception, int executionCount, HttpConte
         if(executionCount > maxRetries) {
             // Do not retry if over max retry count
             retry = false;
-        } else if (exceptionBlacklist.contains(exception.getClass())) {
+        } else if (isInList(exceptionBlacklist, exception)) {
             // immediately cancel retry if the error is blacklisted
             retry = false;
-        } else if (exceptionWhitelist.contains(exception.getClass())) {
+        } else if (isInList(exceptionWhitelist, exception)) {
             // immediately retry if error is whitelisted
             retry = true;
         } else if (!sent) {
@@ -99,4 +100,14 @@ public boolean retryRequest(IOException exception, int executionCount, HttpConte
 
         return retry;
     }
+    
+    protected boolean isInList(HashSet<Class<?>> list, Throwable error) {
+    	Iterator<Class<?>> itr = list.iterator();
+    	while (itr.hasNext()) {
+    		if (itr.next().isInstance(error)) {
+    			return true;
+    		}
+    	}
+    	return false;
+    }
 }