[#4505] Correctly handle whitespaces in websocket uri's.

Motivation:

If a uri contains whitespaces we need to ensure we correctly escape these when creating the request for the handshake.

Modifications:

- Correctly encode path for uri
- Add tests

Result:

Correctly handle whitespaces when doing websocket upgrade requests.

codec-http/src/main/java/io/netty/handler/codec/http/websocketx/WebSocketClientHandshaker.java

@@ -405,4 +405,17 @@ public abstract class WebSocketClientHandshaker {
         }
         return channel.writeAndFlush(frame, promise);
     }
+
+    /**
+     * Return the constructed raw path for the give {@link URI}.
+     */
+    static String rawPath(URI wsURL) {
+        String path = wsURL.getRawPath();
+        String query = wsURL.getQuery();
+        if (query != null && !query.isEmpty()) {
+            path = path + '?' + query;
+        }
+
+        return path == null || path.isEmpty() ? "/" : path;
+    }
 }

codec-http/src/main/java/io/netty/handler/codec/http/websocketx/WebSocketClientHandshaker00.java

@@ -123,14 +123,7 @@ public class WebSocketClientHandshaker00 extends WebSocketClientHandshaker {
 
         // Get path
         URI wsURL = uri();
-        String path = wsURL.getPath();
+        String path = rawPath(wsURL);
-        if (wsURL.getQuery() != null && !wsURL.getQuery().isEmpty()) {
-            path = wsURL.getPath() + '?' + wsURL.getQuery();
-        }
-
-        if (path == null || path.isEmpty()) {
-            path = "/";
-        }
 
         // Format request
         FullHttpRequest request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET, path);

codec-http/src/main/java/io/netty/handler/codec/http/websocketx/WebSocketClientHandshaker07.java

@@ -92,14 +92,7 @@ public class WebSocketClientHandshaker07 extends WebSocketClientHandshaker {
     protected FullHttpRequest newHandshakeRequest() {
         // Get path
         URI wsURL = uri();
-        String path = wsURL.getPath();
+        String path = rawPath(wsURL);
-        if (wsURL.getQuery() != null && !wsURL.getQuery().isEmpty()) {
-            path = wsURL.getPath() + '?' + wsURL.getQuery();
-        }
-
-        if (path == null || path.isEmpty()) {
-            path = "/";
-        }
 
         // Get 16 bit nonce and base 64 encode it
         byte[] nonce = WebSocketUtil.randomBytes(16);

codec-http/src/main/java/io/netty/handler/codec/http/websocketx/WebSocketClientHandshaker08.java

@@ -92,14 +92,7 @@ public class WebSocketClientHandshaker08 extends WebSocketClientHandshaker {
     protected FullHttpRequest newHandshakeRequest() {
         // Get path
         URI wsURL = uri();
-        String path = wsURL.getPath();
+        String path = rawPath(wsURL);
-        if (wsURL.getQuery() != null && !wsURL.getQuery().isEmpty()) {
-            path = wsURL.getPath() + '?' + wsURL.getQuery();
-        }
-
-        if (path == null || path.isEmpty()) {
-            path = "/";
-        }
 
         // Get 16 bit nonce and base 64 encode it
         byte[] nonce = WebSocketUtil.randomBytes(16);

codec-http/src/main/java/io/netty/handler/codec/http/websocketx/WebSocketClientHandshaker13.java

@@ -92,14 +92,7 @@ public class WebSocketClientHandshaker13 extends WebSocketClientHandshaker {
     protected FullHttpRequest newHandshakeRequest() {
         // Get path
         URI wsURL = uri();
-        String path = wsURL.getPath();
+        String path = rawPath(wsURL);
-        if (wsURL.getQuery() != null && !wsURL.getQuery().isEmpty()) {
-            path = wsURL.getPath() + '?' + wsURL.getQuery();
-        }
-
-        if (path == null || path.isEmpty()) {
-            path = "/";
-        }
 
         // Get 16 bit nonce and base 64 encode it
         byte[] nonce = WebSocketUtil.randomBytes(16);

codec-http/src/test/java/io/netty/handler/codec/http/websocketx/WebSocketClientHandshaker00Test.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2015 The Netty Project
+ *
+ * The Netty Project 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.
+ */
+package io.netty.handler.codec.http.websocketx;
+
+import java.net.URI;
+
+public class WebSocketClientHandshaker00Test extends WebSocketClientHandshakerTest {
+    @Override
+    protected WebSocketClientHandshaker newHandshaker(URI uri) {
+        return new WebSocketClientHandshaker00(uri, WebSocketVersion.V00, null, null, 1024);
+    }
+}

codec-http/src/test/java/io/netty/handler/codec/http/websocketx/WebSocketClientHandshaker07Test.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2015 The Netty Project
+ *
+ * The Netty Project 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.
+ */
+package io.netty.handler.codec.http.websocketx;
+
+import java.net.URI;
+
+public class WebSocketClientHandshaker07Test extends WebSocketClientHandshakerTest {
+    @Override
+    protected WebSocketClientHandshaker newHandshaker(URI uri) {
+        return new WebSocketClientHandshaker07(uri, WebSocketVersion.V07, null, false, null, 1024);
+    }
+}

codec-http/src/test/java/io/netty/handler/codec/http/websocketx/WebSocketClientHandshaker08Test.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2015 The Netty Project
+ *
+ * The Netty Project 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.
+ */
+package io.netty.handler.codec.http.websocketx;
+
+import java.net.URI;
+
+public class WebSocketClientHandshaker08Test extends WebSocketClientHandshakerTest {
+    @Override
+    protected WebSocketClientHandshaker newHandshaker(URI uri) {
+        return new WebSocketClientHandshaker07(uri, WebSocketVersion.V08, null, false, null, 1024);
+    }
+}

codec-http/src/test/java/io/netty/handler/codec/http/websocketx/WebSocketClientHandshaker13Test.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2015 The Netty Project
+ *
+ * The Netty Project 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.
+ */
+package io.netty.handler.codec.http.websocketx;
+
+import java.net.URI;
+
+public class WebSocketClientHandshaker13Test extends WebSocketClientHandshakerTest {
+    @Override
+    protected WebSocketClientHandshaker newHandshaker(URI uri) {
+        return new WebSocketClientHandshaker13(uri, WebSocketVersion.V13, null, false, null, 1024);
+    }
+}

codec-http/src/test/java/io/netty/handler/codec/http/websocketx/WebSocketClientHandshakerTest.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2015 The Netty Project
+ *
+ * The Netty Project 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.
+ */
+package io.netty.handler.codec.http.websocketx;
+
+import io.netty.handler.codec.http.FullHttpRequest;
+import org.junit.Test;
+
+import java.net.URI;
+
+import static org.junit.Assert.assertEquals;
+
+public abstract class WebSocketClientHandshakerTest {
+    protected abstract WebSocketClientHandshaker newHandshaker(URI uri);
+
+    @Test
+    public void testRawPath() {
+        URI uri = URI.create("ws://localhost:9999/path%20with%20ws");
+        WebSocketClientHandshaker handshaker = newHandshaker(uri);
+        FullHttpRequest request = handshaker.newHandshakeRequest();
+        try {
+            assertEquals("/path%20with%20ws", request.getUri());
+        } finally {
+            request.release();
+        }
+    }
+}