[#735] Make sure the handshake ChannelFuture is notified after the right encoder is present in the ChannelPipeline

transport/src/main/java/io/netty/channel/ChannelFutureNotifier.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2012 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.channel;
+
+/**
+ * ChannelFutureListener implementation which takes another ChannelFuture and notifies it
+ * once the operationComplete method was called.
+ */
+public final class ChannelFutureNotifier implements ChannelFutureListener {
+    private final ChannelFuture future;
+
+    public ChannelFutureNotifier(ChannelFuture future) {
+        this.future = future;
+    }
+
+    @Override
+    public void operationComplete(ChannelFuture cf) throws Exception {
+        if (cf.isSuccess()) {
+            future.setSuccess();
+        } else {
+            future.setFailure(cf.cause());
+        }
+    }
+}