摘要：
c++有udt，rudp这一类快速稳定不丢包的开源库，c#有人用raknet,不过它不能组播也不能p2p。所以我今天推荐的是lidgren。这个框架国内很少有人用，但它能快速安全udp发送，也能p2p发送。最重要的是相比国内2万一套ESFramework，它是免费的！先来一点我修改后的代码。=null){switch{caseNetIncomingMessageType.StatusChanged:NetConnectionStatusstatus=msg.ReadByte();stringreason=msg.ReadString();Output;ifOutput;UpdateConnectionsList();break;caseNetIncomingMessageType.WarningMessage:caseNetIncomingMessageType.VerboseDebugMessage:stringtext=msg.ReadString();Output;break;caseNetIncomingMessageType.ErrorMessage:caseNetIncomingMessageType.DebugMessage:varstr=msg.ReadString();ifbreak;//we'llgetabunchoftheseandwe'refinewiththatConsole.WriteLine;break;caseNetIncomingMessageType.Data:stringchat=msg.ReadString();Output;Listall=s_server.Connections;//getcopyall.Remove;if{NetOutgoingMessageom=s_server.CreateMessage();om.Write;s_server.SendMessage;}break;caseNetIncomingMessageType.UnconnectedData:Console.WriteLine;break;default:Output;break;}s_server.Recycle;}Thread.Sleep;}}privatestaticvoidOutput{Console.WriteLine;}privatestaticvoidUpdateConnectionsList(){foreach{stringstr=NetUtility.ToHexString+"from"+conn.RemoteEndPoint.ToString()+"["+conn.Status+"]";Output;}}}}这一段是服务器代码，目的就是接收客户端来的消息，并且发送给所以客户端。
有一年多没写东西了，一懒惰就会找借口，今夜擦拭了堆满灰尘的笔记本电脑，插上电源，写了一些代码，时光好像又回到了以前，那个充满梦想的自己。还能回来吗？
好了，废话不多说了，今天主要说说实时通讯，因为手机游戏现在越来越需要这类高速的通信来交互，不然不好玩！c++有udt，rudp这一类快速稳定不丢包的开源库，c#有人用raknet,不过它不能组播也不能p2p。所以我今天推荐的是lidgren 。这个框架国内很少有人用，但它能快速安全udp发送，也能p2p发送。最重要的是 相比国内2万一套ESFramework，它是免费的！
先来一点 我修改后的代码。
usingLidgren.Network; usingSystem; usingSystem.Collections.Generic; usingSystem.Linq; usingSystem.Text; usingSystem.Threading; usingSystem.Threading.Tasks; namespacelidgrenwin { classProgram { private staticNetServer s_server; static void Main(string[] args) { NetPeerConfiguration config = new NetPeerConfiguration("chat"); config.MaximumConnections = 100; config.Port = 14242; s_server = newNetServer(config); s_server.Start(); while (true) { NetIncomingMessage msg; while ((msg = s_server.ReadMessage()) != null) { switch(msg.MessageType) { caseNetIncomingMessageType.StatusChanged: NetConnectionStatus status =(NetConnectionStatus)msg.ReadByte(); string reason =msg.ReadString(); Output(NetUtility.ToHexString(msg.SenderConnection.RemoteUniqueIdentifier) + " " + status + ": " +reason); if (status ==NetConnectionStatus.Connected) Output("Remote hail: " +msg.SenderConnection.RemoteHailMessage.ReadString()); UpdateConnectionsList(); break; caseNetIncomingMessageType.WarningMessage: caseNetIncomingMessageType.VerboseDebugMessage: string text =msg.ReadString(); Output(text); break; caseNetIncomingMessageType.ErrorMessage: caseNetIncomingMessageType.DebugMessage: var str =msg.ReadString(); if (str.StartsWith("Malformed packet; stated") ||str.StartsWith("Received unhandled library message") ||str.StartsWith("Unexpected NetMessageType")) break; //we'll get a bunch of these and we're fine with that Console.WriteLine(msg.MessageType + ": " +str); break; caseNetIncomingMessageType.Data: string chat =msg.ReadString(); Output("Broadcasting '" + chat + "'"); List<NetConnection> all = s_server.Connections; //get copy all.Remove(msg.SenderConnection); if (all.Count > 0) { NetOutgoingMessage om =s_server.CreateMessage(); om.Write(NetUtility.ToHexString(msg.SenderConnection.RemoteUniqueIdentifier) + "said: " +chat); s_server.SendMessage(om, all, NetDeliveryMethod.ReliableOrdered, 0); } break; caseNetIncomingMessageType.UnconnectedData: Console.WriteLine("Received " + msg.LengthBits + "bits of unconnected data"); break; default: Output("Unhandled type: " + msg.MessageType + " " + msg.LengthBytes + "bytes " + msg.DeliveryMethod + "|" +msg.SequenceChannel); break; } s_server.Recycle(msg); } Thread.Sleep(1); } } private static void Output(stringtext) { Console.WriteLine(text); } private static voidUpdateConnectionsList() { foreach (NetConnection conn ins_server.Connections) { string str = NetUtility.ToHexString(conn.RemoteUniqueIdentifier) + "from " + conn.RemoteEndPoint.ToString() + "[" + conn.Status + "]"; Output(str); } } } }
这一段是 服务器代码，目的就是接收 客户端来的消息，并且发送给所以客户端。
这里面最主要的是switchNetIncomingMessageType以及下面代码，快速有序发送。不丢包
s_server.SendMessage(om, all, NetDeliveryMethod.ReliableOrdered, 0);
今天让大家认识一下，从下次开始，我会编写更多的demo和大家讲使用方法，包括unity运用，包括p2p，等等