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java netty socket庫和自定義C#socket庫利用protobuf進行通信完整實例，

編輯：C#入門知識

java netty socket庫和自定義C#socket庫利用protobuf進行通信完整實例，

之前的文章講述了socket通信的一些基本知識，已經本人自定義的C#版本的socket、和java netty 庫的二次封裝，但是沒有真正的發表測試用例。

本文只是為了講解利用protobuf 進行C# 和 java的通信。以及完整的實例代碼

java 代碼 svn 地址，本人開發工具是NetBeans 8.0.2 使用 maven 項目編譯

http://code.taobao.org/svn/flynetwork_csharp/trunk/BlogTest

c# 代碼 svn 地址使用的是 vs 2013 .net 4.5

http://code.taobao.org/svn/flynetwork_csharp/trunk/Flynetwork/BlogTest

編譯工具下載

http://files.cnblogs.com/files/ty408/Sz.ExcelTools.zip

本文著重以C# socket作為服務器端，java netty作為socket的客戶端進行訪問通信

首先附上proto的message文件

package Sz.Test.ProtoMessage;


//登陸消息
message TestMessage {

   //消息枚舉
    enum Proto_Login {

        ResTip                          = 101201;//服務器推送提示

        ReqLogin                        = 101102;//客戶端申請登陸

        ReqChat                        = 101103;//客戶端申請聊天消息
        ResChat                        = 101203;//服務器推送聊天消息
        

    }


    //服務器推送提示 ResTip
    message ResTipMessage {
        required string msg                     = 1;//提示內容
    }


    //客戶端申請登陸 ReqLogin
    message ReqLoginMessage {

        required string userName                = 1;//登陸用戶名
        required string userPwd                 = 2;//登陸密碼

    } 


    //客戶端申請登陸 ReqChat
    message ReqChatMessage {
        required string msg                     = 1;//提示內容
    }


    //客戶端申請登陸 ResChat
    message ResChatMessage {
        required string msg                     = 1;//提示內容
    }
}

本人編譯工具自帶生產消息，和對應的handler

先把proto文件編譯生產後，放到哪裡，然後創建服務器監聽代碼

上一篇文章講到由於java和C#默認網絡端緒不一樣，java是標准端緒大端序，C#使用的小端序。

1             MarshalEndian.JN = MarshalEndian.JavaOrNet.Java;
2             Sz.Network.SocketPool.ListenersBox.Instance.SetParams(new MessagePool(), typeof(MarshalEndian));
3             Sz.Network.SocketPool.ListenersBox.Instance.Start("tcp:*:9527");

所以在我開啟服務器監聽的時候設置解碼器和編碼器的解析風格為java

然後建立一個文件chat文件夾用於存放handler文件就是剛才工具生成目錄下的 ExcelSource\protobuf\net\Handler

這一系列文件

 1 if (message.MsgID == (int)Sz.Test.ProtoMessage.TestMessage.Proto_Login.ReqLogin)
 2             {
 3                 //構建消息
 4                 Sz.Test.ProtoMessage.TestMessage.ReqLoginMessage loginmessage = new Test.ProtoMessage.TestMessage.ReqLoginMessage();
 5                 object msg = DeSerialize(message.MsgBuffer, loginmessage);
 6                 //構建handler
 7                 Test.ProtoMessage.ReqLoginHandler handler = new Test.ProtoMessage.ReqLoginHandler();
 8                 handler.Session = client;
 9                 handler.Message = loginmessage;
10                 //把handler交給 登錄 線程處理
11                 ThreadManager.Instance.AddTask(ServerManager.LoginThreadID, handler);
12             }
13             else if (message.MsgID == (int)Sz.Test.ProtoMessage.TestMessage.Proto_Login.ReqChat)
14             {
15                 //構建消息
16                 Sz.Test.ProtoMessage.TestMessage.ReqChatMessage loginmessage = new Test.ProtoMessage.TestMessage.ReqChatMessage();
17                 object msg = DeSerialize(message.MsgBuffer, loginmessage);
18                 //構建handler
19                 Test.ProtoMessage.ReqChatHandler handler = new Test.ProtoMessage.ReqChatHandler();
20                 handler.Session = client;
21                 handler.Message = loginmessage;
22                 //把handler交給 聊天 線程處理
23                 ThreadManager.Instance.AddTask(ServerManager.ChatThreadID, handler);
24             }

收到消息後的處理判斷傳入的消息id是什麼類型的，然後對應反序列化byte[]數組為消息

最後把消息和生成handler移交到對應的線程處理

登錄的消息全部交給 LoginThread 線程去處理，這樣在真實的運行環境下，能保證單點登錄問題；

聊天消息全部交給 ChatThread 線程去處理這樣的好處是，聊天與登錄無關；

收到登錄消息的處理

 1     public class ReqLoginHandler : TcpHandler
 2     {
 3         public override void Run()
 4         {
 5             
 6             var message = (Sz.Test.ProtoMessage.TestMessage.ReqLoginMessage)this.Message;
 7             Sz.Test.ProtoMessage.TestMessage.ResTipMessage tip = new TestMessage.ResTipMessage();
 8             if (message.userName == "admin" && message.userPwd == "admin")
 9             {
10                 Logger.Debug("收到登錄消息 登錄完成"); 
11                 tip.msg = "登錄完成";
12             }
13             else
14             {
15                 Logger.Debug("收到登錄消息 用戶名或者密碼錯誤"); 
16                 tip.msg = "用戶名或者密碼錯誤";
17             }
18             byte[] buffer = MessagePool.Serialize(tip);
19             this.Session.SendMsg(new Network.SocketPool.SocketMessage((int)Sz.Test.ProtoMessage.TestMessage.Proto_Login.ResTip, buffer));
20         }
21     }

收到聊天消息的處理

 1     public class ReqChatHandler : TcpHandler
 2     {
 3         public override void Run()
 4         {
 5             var message = (Sz.Test.ProtoMessage.TestMessage.ReqChatMessage)this.Message;
 6             Logger.Debug("收到來自客戶端聊天消息：" + message.msg);
 7             Sz.Test.ProtoMessage.TestMessage.ResChatMessage chat = new TestMessage.ResChatMessage();
 8             chat.msg = "服務器廣播：" + message.msg;
 9             byte[] buffer = MessagePool.Serialize(chat);
10             this.Session.SendMsg(new Network.SocketPool.SocketMessage((int)Sz.Test.ProtoMessage.TestMessage.Proto_Login.ResChat, buffer));
11         }
12     }

接下來我們構建

java版本基於netty 二次封裝的socket客戶端

 1 package sz.network.socketpool.nettypool;
 2 
 3 import Sz.Test.ProtoMessage.Test.TestMessage;
 4 import com.google.protobuf.InvalidProtocolBufferException;
 5 import io.netty.channel.ChannelHandlerContext;
 6 import java.io.BufferedReader;
 7 import java.io.IOException;
 8 import java.io.InputStreamReader;
 9 import java.util.logging.Level;
10 import org.apache.log4j.Logger;
11 
12 /**
13  *
14  * @author Administrator
15  */
16 public class TestClient {
17 
18     static final Logger log = Logger.getLogger(TestClient.class);
19     static NettyTcpClient client = null;
20 
21     public static void main(String[] args) {
22         client = new NettyTcpClient("127.0.0.1", 9527, true, new NettyMessageHandler() {
23 
24             @Override
25             public void channelActive(ChannelHandlerContext session) {
26                 log.info("連接服務器成功：");
27                 //構建錯誤的登錄消息
28                 TestMessage.ReqLoginMessage.Builder newBuilder = TestMessage.ReqLoginMessage.newBuilder();
29                 newBuilder.setUserName("a");
30                 newBuilder.setUserPwd("a");
31                 //發送消息
32                 TestClient.client.sendMsg(new NettyMessageBean(TestMessage.Proto_Login.ReqLogin_VALUE, newBuilder.build().toByteArray()));
33 
34                 //構建正確的登錄消息
35                 TestMessage.ReqLoginMessage.Builder newBuilder1 = TestMessage.ReqLoginMessage.newBuilder();
36                 newBuilder1.setUserName("admin");
37                 newBuilder1.setUserPwd("admin");
38                 TestClient.client.sendMsg(new NettyMessageBean(TestMessage.Proto_Login.ReqLogin_VALUE, newBuilder1.build().toByteArray()));
39             }
40 
41             @Override
42             public void readMessage(NettyMessageBean msg) {
43                 try {
44                     if (msg.getMsgid() == TestMessage.Proto_Login.ResTip_VALUE) {
45                         TestMessage.ResTipMessage tipmessage = TestMessage.ResTipMessage.parseFrom(msg.getMsgbuffer());
46                         log.info("收到提示信息：" + tipmessage.getMsg());
47                     } else if (msg.getMsgid() == TestMessage.Proto_Login.ResChat_VALUE) {
48                         TestMessage.ResChatMessage tipmessage = TestMessage.ResChatMessage.parseFrom(msg.getMsgbuffer());
49                         log.info("收到聊天消息：" + tipmessage.getMsg());
50                     }
51                 } catch (InvalidProtocolBufferException ex) {
52                     log.error("收到消息：" + msg.getMsgid() + " 解析出錯：" + ex);
53                 }
54             }
55 
56             @Override
57             public void closeSession(ChannelHandlerContext session) {
58                 log.info("連接關閉或者連接不成功：");
59             }
60 
61             @Override
62             public void exceptionCaught(ChannelHandlerContext session, Throwable cause) {
63                 log.info("錯誤：" + cause.toString());
64             }
65         });
66         client.Connect();
67 
68         BufferedReader strin = new BufferedReader(new InputStreamReader(System.in));
69         while (true) {
70             try {
71                 String str = strin.readLine();
72                 //構建聊天消息
73                 TestMessage.ReqChatMessage.Builder chatmessage = TestMessage.ReqChatMessage.newBuilder();
74                 chatmessage.setMsg(str);
75                 TestClient.client.sendMsg(new NettyMessageBean(TestMessage.Proto_Login.ReqChat_VALUE, chatmessage.build().toByteArray()));
76             } catch (IOException ex) {
77             }
78         }
79 
80     }
81 
82 }

接下來我們看看效果

我設置了斷線重連功能，我們來測試一下，把服務器關閉

可以看到沒3秒向服務器發起一次請求；

知道服務器再次開啟鏈接成功

完整的通信示例演示就完了；

代碼我不在上傳了，請各位使用svn下載好麼？？？？

需要注意的是，消息的解碼器和編碼器，一定要雙方都遵守你自己的契約。比如我在編碼消息格式的時候先寫入消息包的長度，然後跟上消息的id，再是消息的內容

所以解碼的時候，先讀取一個消息長度，在讀取一個消息id，如果本次收到的消息字節數不夠長度那麼留存起來以用於下一次收到字節數組追加後再一起解析。

這樣就能解決粘包的問題。

附上C#版本的解析器

  1 using System;
  2 using System.Collections.Generic;
  3 using System.IO;
  4 using System.Linq;
  5 using System.Text;
  6 using System.Threading.Tasks;
  7 
  8 /**
  9  * 
 10  * @author 失足程序員
 11  * @Blog http://www.cnblogs.com/ty408/
 12  * @mail 492794628@qq.com
 13  * @phone 13882122019
 14  * 
 15  */
 16 namespace Sz.Network.SocketPool
 17 {
 18     public class MarshalEndian : IMarshalEndian
 19     {
 20 
 21         public enum JavaOrNet
 22         {
 23             Java,
 24             Net,
 25         }
 26 
 27         public MarshalEndian()
 28         {
 29 
 30         }
 31 
 32         public static JavaOrNet JN = JavaOrNet.Net;
 33 
 34         /// <summary>
 35         /// 讀取大端序的int
 36         /// </summary>
 37         /// <param name="value"></param>
 38         public int ReadInt(byte[] intbytes)
 39         {
 40             Array.Reverse(intbytes);
 41             return BitConverter.ToInt32(intbytes, 0);
 42         }
 43 
 44         /// <summary>
 45         /// 寫入大端序的int
 46         /// </summary>
 47         /// <param name="value"></param>
 48         public byte[] WriterInt(int value)
 49         {
 50             byte[] bs = BitConverter.GetBytes(value);
 51             Array.Reverse(bs);
 52             return bs;
 53         }
 54 
 55         //用於存儲剩余未解析的字節數
 56         private List<byte> _LBuff = new List<byte>(2);
 57 
 58         //字節數常量一個消息id4個字節
 59         const long ConstLenght = 4L;
 60 
 61         public void Dispose()
 62         {
 63             this.Dispose(true);
 64             GC.SuppressFinalize(this);
 65         }
 66 
 67         protected virtual void Dispose(bool flag1)
 68         {
 69             if (flag1)
 70             {
 71                 IDisposable disposable = this._LBuff as IDisposable;
 72                 if (disposable != null) { disposable.Dispose(); }
 73             }
 74         }
 75 
 76         public byte[] Encoder(SocketMessage msg)
 77         {
 78             MemoryStream ms = new MemoryStream();
 79             BinaryWriter bw = new BinaryWriter(ms, UTF8Encoding.Default);
 80             byte[] msgBuffer = msg.MsgBuffer;
 81 
 82             if (msgBuffer != null)
 83             {
 84                 switch (JN)
 85                 {
 86                     case JavaOrNet.Java:
 87                         bw.Write(WriterInt(msgBuffer.Length + 4));
 88                         bw.Write(WriterInt(msg.MsgID));
 89                         break;
 90                     case JavaOrNet.Net:
 91                         bw.Write((Int32)(msgBuffer.Length + 4));
 92                         bw.Write(msg.MsgID);
 93                         break;
 94                 }
 95 
 96                 bw.Write(msgBuffer);
 97             }
 98             else
 99             {
100                 switch (JN)
101                 {
102                     case JavaOrNet.Java:
103                         bw.Write(WriterInt(0));
104                         break;
105                     case JavaOrNet.Net:
106                         bw.Write((Int32)0);
107                         break;
108                 }
109             }
110             bw.Close();
111             ms.Close();
112             bw.Dispose();
113             ms.Dispose();
114             return ms.ToArray();
115         }
116 
117         public List<SocketMessage> Decoder(byte[] buff, int len)
118         {
119             //拷貝本次的有效字節
120             byte[] _b = new byte[len];
121             Array.Copy(buff, 0, _b, 0, _b.Length);
122             buff = _b;
123             if (this._LBuff.Count > 0)
124             {
125                 //拷貝之前遺留的字節
126                 this._LBuff.AddRange(_b);
127                 buff = this._LBuff.ToArray();
128                 this._LBuff.Clear();
129                 this._LBuff = new List<byte>(2);
130             }
131             List<SocketMessage> list = new List<SocketMessage>();
132             MemoryStream ms = new MemoryStream(buff);
133             BinaryReader buffers = new BinaryReader(ms, UTF8Encoding.Default);
134             try
135             {
136                 byte[] _buff;
137             Label_0073:
138                 //判斷本次解析的字節是否滿足常量字節數 
139                 if ((buffers.BaseStream.Length - buffers.BaseStream.Position) < ConstLenght)
140                 {
141                     _buff = buffers.ReadBytes((int)(buffers.BaseStream.Length - buffers.BaseStream.Position));
142                     this._LBuff.AddRange(_buff);
143                 }
144                 else
145                 {
146                     long offset = 0;
147                     switch (JN)
148                     {
149                         case JavaOrNet.Java:
150                             offset = ReadInt(buffers.ReadBytes(4));
151                             break;
152                         case JavaOrNet.Net:
153                             offset = buffers.ReadInt32();
154                             break;
155                     }
156 
157                     //剩余字節數大於本次需要讀取的字節數
158                     if (offset <= (buffers.BaseStream.Length - buffers.BaseStream.Position))
159                     {
160                         int msgID = 0;
161                         switch (JN)
162                         {
163                             case JavaOrNet.Java:
164                                 msgID = ReadInt(buffers.ReadBytes(4));
165                                 break;
166                             case JavaOrNet.Net:
167                                 msgID = buffers.ReadInt32();
168                                 break;
169                         }
170                         _buff = buffers.ReadBytes((int)(offset - 4));
171                         list.Add(new SocketMessage(msgID, _buff));
172                         goto Label_0073;
173                     }
174                     else
175                     {
176                         //剩余字節數剛好小於本次讀取的字節數 存起來，等待接受剩余字節數一起解析
177                         buffers.BaseStream.Seek(ConstLenght, SeekOrigin.Current);
178                         _buff = buffers.ReadBytes((int)(buffers.BaseStream.Length - buffers.BaseStream.Position));
179                         this._LBuff.AddRange(_buff);
180                     }
181                 }
182             }
183             catch { }
184             finally
185             {
186                 buffers.Close();
187                 if (buffers != null) { buffers.Dispose(); }
188                 ms.Close();
189                 if (ms != null) { ms.Dispose(); }
190             }
191             return list;
192         }
193     }
194 }

謝謝觀賞~！