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-/*
-* 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.
-*/
-
-using System;
-using System.Configuration;
-using System.IO;
-using System.Text;
-using System.Threading;
-using org.apache.qpid.client;
-using org.apache.qpid.transport;
-
-namespace org.apache.qpid.example.requestresponse
-{
- /// <summary>
- /// This program is one of two programs that illustrate the
- /// request/response pattern.
- ///
- /// Client:
- /// Make requests of a service, print the response.
- ///
- /// Server (this program):
- /// Accept requests, set the letters to uppercase in each message, and
- /// return it as a response.
- ///
- /// </summary>
- class Server
- {
- static void Main(string[] args)
- {
- string host = ConfigurationManager.AppSettings["Host"];
- int port = int.Parse(ConfigurationManager.AppSettings["Port"]);
- string virtualhost = ConfigurationManager.AppSettings["VirtualHost"];
- string username = ConfigurationManager.AppSettings["Username"];
- string password = ConfigurationManager.AppSettings["Password"];
-
- Client connection = new Client();
- try
- {
- connection.Connect(host, port, virtualhost, username, password);
- IClientSession session = connection.CreateSession(50000);
-
- //--------- Main body of program --------------------------------------------
- // Create a request queue for clients to use when making
- // requests.
- const string request_queue = "request";
- // Use the name of the request queue as the routing key
- session.QueueDeclare(request_queue);
- session.ExchangeBind(request_queue, "amq.direct", request_queue);
-
- lock (session)
- {
- // Create a listener and subscribe it to the request_queue
- IMessageListener listener = new MessageListener(session);
- session.AttachMessageListener(listener, request_queue);
- session.MessageSubscribe(request_queue);
- // Receive messages until all messages are received
- Console.WriteLine("Waiting for requests");
- Monitor.Wait(session);
- }
-
- //---------------------------------------------------------------------------
-
- connection.Close();
- }
- catch (Exception e)
- {
- Console.WriteLine("Error: \n" + e.StackTrace);
- }
- }
- }
-
- public class MessageListener : IMessageListener
- {
- private readonly IClientSession _session;
- private readonly RangeSet _range = new RangeSet();
- public MessageListener(IClientSession session)
- {
- _session = session;
- }
-
- public void MessageTransfer(IMessage request)
- {
- IMessage response = new Message();
-
- // Get routing key for response from the request's replyTo property
- string routingKey;
- if( request.MessageProperties.HasReplyTo() )
- {
- routingKey = request.MessageProperties.GetReplyTo().GetRoutingKey();
- }
- else
- {
- Console.WriteLine("Error: \n No routing key for request " + request);
- return;
- }
-
- BinaryReader reader = new BinaryReader(request.Body, Encoding.UTF8);
- byte[] body = new byte[request.Body.Length - request.Body.Position];
- reader.Read(body, 0, body.Length);
- ASCIIEncoding enc = new ASCIIEncoding();
- string message = enc.GetString(body);
- Console.WriteLine("Request: " + message);
-
- // Transform message content to upper case
- string responseBody = message.ToUpper();
-
- // Send it back to the user
- response.ClearData();
- response.AppendData(Encoding.UTF8.GetBytes(responseBody));
- _session.MessageTransfer("amq.direct", routingKey, response);
-
- // Add this message to the list of message to be acknowledged
- _range.Add(request.Id);
- if (message.Equals("That's all, folks!"))
- {
- // Acknowledge all the received messages
- _session.MessageAccept(_range);
- lock (_session)
- {
- Monitor.Pulse(_session);
- }
- }
- }
- }
-}