1 files changed, 98 insertions, 0 deletions
diff --git a/src/org/apache/http/protocol/RequestTargetHost.java b/src/org/apache/http/protocol/RequestTargetHost.java
new file mode 100644
index 0000000..9349a8a
--- /dev/null
+++ b/src/org/apache/http/protocol/RequestTargetHost.java
@@ -0,0 +1,98 @@
+/*
+ * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/protocol/RequestTargetHost.java $
+ * $Revision: 573864 $
+ * $Date: 2007-09-08 08:53:25 -0700 (Sat, 08 Sep 2007) $
+ *
+ * ====================================================================
+ * 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
+ * <http://www.apache.org/>.
+ *
+ */
+
+package org.apache.http.protocol;
+
+import java.io.IOException;
+import java.net.InetAddress;
+
+import org.apache.http.HttpConnection;
+import org.apache.http.HttpException;
+import org.apache.http.HttpHost;
+import org.apache.http.HttpInetConnection;
+import org.apache.http.HttpRequest;
+import org.apache.http.HttpRequestInterceptor;
+import org.apache.http.HttpVersion;
+import org.apache.http.ProtocolVersion;
+import org.apache.http.ProtocolException;
+
+/**
+ * A request interceptor that sets the Host header for HTTP/1.1 requests.
+ *
+ * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
+ *
+ * @version $Revision: 573864 $
+ * 
+ * @since 4.0
+ */
+public class RequestTargetHost implements HttpRequestInterceptor {
+
+    public RequestTargetHost() {
+        super();
+    }
+    
+    public void process(final HttpRequest request, final HttpContext context) 
+            throws HttpException, IOException {
+        if (request == null) {
+            throw new IllegalArgumentException("HTTP request may not be null");
+        }
+        if (context == null) {
+            throw new IllegalArgumentException("HTTP context may not be null");
+        }
+        if (!request.containsHeader(HTTP.TARGET_HOST)) {
+            HttpHost targethost = (HttpHost) context
+                .getAttribute(ExecutionContext.HTTP_TARGET_HOST);
+            if (targethost == null) {
+                HttpConnection conn = (HttpConnection) context
+                    .getAttribute(ExecutionContext.HTTP_CONNECTION);
+                if (conn instanceof HttpInetConnection) {
+                    // Populate the context with a default HTTP host based on the 
+                    // inet address of the target host
+                    InetAddress address = ((HttpInetConnection) conn).getRemoteAddress();
+                    int port = ((HttpInetConnection) conn).getRemotePort();
+                    if (address != null) {
+                        targethost = new HttpHost(address.getHostName(), port);
+                    }
+                }
+                if (targethost == null) {
+                    ProtocolVersion ver = request.getRequestLine().getProtocolVersion();
+                    if (ver.lessEquals(HttpVersion.HTTP_1_0)) {
+                        return;
+                    } else {
+                        throw new ProtocolException("Target host missing");
+                    }
+                }
+            }
+            request.addHeader(HTTP.TARGET_HOST, targethost.toHostString());
+        }
+    }
+    
+}