diff --git a/src/java/org/apache/http/client/HttpRequestRetryHandler.java b/src/java/org/apache/http/client/HttpRequestRetryHandler.java
new file mode 100644
index 000000000..61dc2cfdb
--- /dev/null
+++ b/src/java/org/apache/http/client/HttpRequestRetryHandler.java
@@ -0,0 +1,66 @@
+/*
+ * $HeadURL$
+ * $Revision$
+ * $Date$
+ *
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation. For more
+ * information on the Apache Software Foundation, please see
+ *
+ * Classes implementing this interface must synchronize access to shared + * data as methods of this interfrace may be executed from multiple threads + *
+ * + * @author Michael Becke + * @author Oleg Kalnichevski + */ +public interface HttpRequestRetryHandler { + + /** + * Determines if a method should be retried after an IOException + * occurs during execution. + * + * @param exception the exception that occurred + * @param executionCount the number of times this method has been + * unsuccessfully executed + * @param context the context for the request execution + * + * @returntrue
if the method should be retried, false
+ * otherwise
+ */
+ boolean retryRequest(IOException exception, int executionCount, HttpContext context);
+
+}
diff --git a/src/java/org/apache/http/impl/client/DefaultHttpRequestRetryHandler.java b/src/java/org/apache/http/impl/client/DefaultHttpRequestRetryHandler.java
new file mode 100644
index 000000000..014dcf179
--- /dev/null
+++ b/src/java/org/apache/http/impl/client/DefaultHttpRequestRetryHandler.java
@@ -0,0 +1,133 @@
+/*
+ * $HeadURL$
+ * $Revision$
+ * $Date$
+ *
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation. For more
+ * information on the Apache Software Foundation, please see
+ * retryCount
and requestSentRetryEnabled
to determine
+ * if the given method should be retried.
+ */
+ public boolean retryRequest(
+ final IOException exception,
+ int executionCount,
+ final HttpContext context) {
+ if (exception == null) {
+ throw new IllegalArgumentException("Exception parameter may not be null");
+ }
+ if (context == null) {
+ throw new IllegalArgumentException("HTTP context may not be null");
+ }
+ if (executionCount > this.retryCount) {
+ // Do not retry if over max retry count
+ return false;
+ }
+ if (exception instanceof NoHttpResponseException) {
+ // Retry if the server dropped connection on us
+ return true;
+ }
+ if (exception instanceof InterruptedIOException) {
+ // Timeout
+ return false;
+ }
+ if (exception instanceof UnknownHostException) {
+ // Unknown host
+ return false;
+ }
+ if (exception instanceof SSLHandshakeException) {
+ // SSL handshake exception
+ return false;
+ }
+ Boolean b = (Boolean) context.getAttribute(HttpExecutionContext.HTTP_REQ_SENT);
+ boolean sent = (b != null && b.booleanValue());
+ if (!sent || this.requestSentRetryEnabled) {
+ // Retry if the request has not been sent fully or
+ // if it's OK to retry methods that have been sent
+ return true;
+ }
+ // otherwise do not retry
+ return false;
+ }
+
+ /**
+ * @return true
if this handler will retry methods that have
+ * successfully sent their request, false
otherwise
+ */
+ public boolean isRequestSentRetryEnabled() {
+ return requestSentRetryEnabled;
+ }
+
+ /**
+ * @return the maximum number of times a method will be retried
+ */
+ public int getRetryCount() {
+ return retryCount;
+ }
+}