Github user ivmaykov commented on a diff in the pull request:
https://github.com/apache/zookeeper/pull/184#discussion_r194234634
--- Diff:
src/java/main/org/apache/zookeeper/server/quorum/PrependableSocket.java ---
@@ -0,0 +1,49 @@
+/**
+ * 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.
+ */
+
+package org.apache.zookeeper.server.quorum;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.SequenceInputStream;
+import java.net.Socket;
+import java.net.SocketImpl;
+
+public class PrependableSocket extends Socket {
--- End diff --
If ZK requires java 8, then you don't need to subclass `Socket`. There is
an API in java 8 to create a socket and push back the bytes you've already
consumed from the input stream:
https://docs.oracle.com/javase/8/docs/api/javax/net/ssl/SSLSocketFactory.html#createSocket-java.net.Socket-java.io.InputStream-boolean-
However, this API is not available in Java 7.
---
