content: /**
   *
   * 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 com.alibaba.wasp.ipc;
  
  import com.alibaba.wasp.protobuf.generated.RPCProtos;
  import com.google.protobuf.Message;
  
  import java.io.IOException;
  import java.net.InetSocketAddress;
  
  public interface RpcServer {
    /** The port this server runs on. */
    int getPort();
  
    void start();
  
    void stop();
  
    void join() throws InterruptedException;
  
    /**
     * Called for each call.
     * 
     * @param param
     *          writable parameter
     * @param receiveTime
     *          time
     * @return Message
     * @throws java.io.IOException
     *           e
     */
    Message call(Class<? extends VersionedProtocol> protocol,
                 RPCProtos.RpcRequestBody param, long receiveTime) throws IOException;
  
    InetSocketAddress getListenerAddress();
  
    public void openServer();
  
    /**
     * Total number of clients connect to this server.
     */
    public int getNumberOfConnections();
  
  }
  