网络通讯之Socket-Tcp（二）
2024-08-30 07:57:45
网络通讯之Socket-Tcp 分成2部分讲解：
1.如何理解Socket
2.Socket通信重要函数
3.Socket Tcp 调用的基本流程图
4.简单Socket实例
网络通讯之Socket-Tcp（二）：
1.完善Socket实例【黏包拆包 收发数据】
2.优化Socket
3.Socket网络安全
黏包 拆包需要明白的概念：
客户端给服务器发（协议）消息，tcp是字节流的传输方式，所以我们给服务器发的消息 都需要转化为byte[]数组（包体或消息体）。
为了能够区分一个完整的消息，给服务器发数据包的时候，我们会把 消息体的长度（简称包头） 也写入内存流，这样我们就可以根据 包头的大小 来确定 从内存流中读取多少大小的消息体。
给服务器发的是这样的 数据包。
网络安全（通信安全）：大家可行根据项目需求是否需要。
对消息体进行 压缩、异或加密、 crc校验、保证消息不被破解 更改。封装数据包之后形成 新数据包 。
经过封装之后 ，给服务器发的是 新数据包。
Socket优化（通信优化）：代码没实现，大家可自行实现
长时间的频繁收发包，导致手机网卡发热，为了防止这种现象，策略是 小包合大包，分帧处理。
实例上图：
客户端给服务器发送一个 赵不灰，服务器给客户端 回一个赵老三的消息。
按 A键 连接服务器，按 S键 发送消息给服务器。
先看服务器代码：
主Program.cs
1 using System;
2 using System.Net;
3 using System.Net.Sockets;
4 using System.Threading;
5
6 namespace ZhaoBuHui.GateWayServer
7 {
8 public sealed class ServerConfig
9 {
10 public static string ip = "192.168.124.2";
11 public static int point = 8082;
12 }
13
14 class Program
15 {
16 private static Socket m_ListenSocket;
17 static void Main(string[] args)
18 {
19 Console.WriteLine("Hello World!");
20 StartListen();
21 }
22 public static void StartListen()
23 {
24 m_ListenSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
25 m_ListenSocket.Bind(new IPEndPoint(IPAddress.Parse(ServerConfig.ip), ServerConfig.point));
26 m_ListenSocket.Listen(100);
27 Console.WriteLine("启动监听{0}成功", m_ListenSocket.LocalEndPoint.ToString());
28 Thread thread = new Thread(ListenClientConnect);
29 thread.Start();
30 }
31 /// <summary>
32 /// 监听客户端链接
33 /// </summary>
34 /// <param name="obj"></param>
35 private static void ListenClientConnect(object obj)
36 {
37 while (true)
38 {
39 try
40 {
41 Socket m_ClientSocket = m_ListenSocket.Accept();
42 IPEndPoint iPEndPoint = (IPEndPoint)m_ClientSocket.RemoteEndPoint;
43 Console.WriteLine("收到客户端IP={0},Port={1}已经连接", iPEndPoint.Address.ToString(), iPEndPoint.Port.ToString());
44 PlayerClientSocket playerClientSocket = new PlayerClientSocket(m_ClientSocket);
45 new PlayerInfo(playerClientSocket);
46 }
47 catch (Exception ex)
48 {
49 Console.WriteLine(ex.ToString());
50 }
51 }
52 }
53 }
54 }
1.每连接进来一个客户端，就会返回一个clientsocket，此clientsocket 负责与客户端的socket 通信。【socket tcp的特性是 点对点】，因此每连接进来我们就会创建一个 PlayerClientSocket。PlayerClientSocket需要有一个Manager 进行管理，感兴趣的同学可以自行实现。
PlayerClientSocket.cs 玩家客户端socket
1 using System;
2 using System.Collections.Generic;
3 using System.Net.Sockets;
4
5 namespace ZhaoBuHui.GateWayServer
6 {
7 //玩家客户端socket
8 public class PlayerClientSocket
9 {
10 private Socket m_Socket;
11
12 /// <summary>
13 /// 接收数据缓存区
14 /// </summary>
15 private byte[] m_Receive = new byte[1024];
16 private TestMemoryStreamUtil m_ReceiveMS = new TestMemoryStreamUtil();
17
18 //发送数据队列
19 private Queue<byte[]> m_SendQueue = new Queue<byte[]>();
20 //压缩阈值
21 private const int m_CompressLen = 200;//255也行 这个自定义
22 public PlayerClientSocket(Socket socket)
23 {
24 m_Socket = socket;
25 ReceiveMsg();
26 }
27
28 //发送消息
29 public void SendMsg(ushort protoId, byte[] data)
30 {
31 lock (m_SendQueue)
32 {
33 m_SendQueue.Enqueue(PackageData(protoId, data));
34 }
35 BeginSendMsg();
36 }
37
38 //封装数据【网络安全：压缩(优化)、加密、crc校验】
39 private byte[] PackageData(ushort protoId, byte[] data)
40 {
41 bool bCompress = data.Length > m_CompressLen;
42 //压缩
43 if (bCompress) data = ZlibHelper.CompressBytes(data);
44 //加密
45 data = SecurityUtil.Xor(data);
46 //Crc16
47 ushort crc = Crc16.CalculateCrc16(data);
48 TestMemoryStreamUtil ms = new TestMemoryStreamUtil();
49 ms.WriteUShort((ushort)(data.Length + 5));//写入长度 压缩1字节 crc2字节 协议号2字节
50 ms.WriteBool(bCompress);//写入压缩
51 ms.WriteUShort(crc);//写入crc
52 ms.WriteUShort(protoId);//写入协议号
53 ms.Write(data, 0, data.Length);//写入data
54 return ms.ToArray();
55 }
56
57 private void BeginSendMsg()
58 {
59 while (true)
60 {
61 lock (m_SendQueue)
62 {
63 if (m_SendQueue.Count <= 0) break; ;
64 byte[] data = m_SendQueue.Dequeue();
65 m_Socket.BeginSend(data, 0, data.Length, SocketFlags.None, SendCallBack, m_Socket);
66 }
67 }
68 }
69
70 private void SendCallBack(IAsyncResult ar)
71 {
72 try
73 {
74 if (!ar.CompletedSynchronously) return;
75 m_Socket.EndSend(ar);
76 }
77 catch (Exception ex)
78 {
79 Console.WriteLine(ex.ToString());
80 }
81 }
82
83 //接收消息
84 private void ReceiveMsg()
85 {
86 try
87 {
88 //开始接收
89 m_Socket.BeginReceive(m_Receive, 0, m_Receive.Length, SocketFlags.None, ReceiveCallBack, m_Socket);
90 }
91 catch (Exception ex)
92 {
93 Console.WriteLine(ex.ToString());
94 }
95 }
96
97 private void ReceiveCallBack(IAsyncResult ar)
98 {
99 try
100 {
101 int len = m_Socket.EndReceive(ar);
102 if (len > 0)
103 {
104 m_ReceiveMS.Position = m_ReceiveMS.Length;
105 m_ReceiveMS.Write(m_Receive, 0, len);
106 while (true)
107 {
108 //不完整包过来
109 if (len > 2)
110 {
111 m_ReceiveMS.Position = 0;
112 ushort currMsglen = m_ReceiveMS.ReadUShort();//当前包体的长度（压缩 crc 协议号 数据）
113 ushort currFullLen = (ushort)(currMsglen + 2);//包体+包头
114 //过来一个完整包
115 if (len >= currFullLen)
116 {
117 m_ReceiveMS.Position = 2;
118 byte[] currFullData = new byte[currMsglen];
119 m_ReceiveMS.Read(currFullData, 0, currMsglen);
120 //解封数据
121 currFullData = UnBlockData(currFullData, out ushort protoId);
122 if (currFullData == null) continue;
123 TestCommonEvent.Dispatch(protoId, currFullData);
124 //处理剩余字节
125 if (len - currFullLen > 0)
126 {
127 byte[] residueData = new byte[len - currFullLen];
128 m_ReceiveMS.Position = currFullLen;
129 m_ReceiveMS.Read(residueData, 0, len - currFullLen);
130
131 m_ReceiveMS.SetLength(0);
132 m_ReceiveMS.Position = 0;
133 m_ReceiveMS.Write(residueData, 0, residueData.Length);
134 residueData = null;
135 }
136 else
137 {
138 m_ReceiveMS.SetLength(0);
139 break;
140 }
141 }
142 else
143 {
144 break; //没有收到一个完整的包 等待下一次处理
145 }
146 }
147 else
148 {
149 break;//还没收到数据
150 }
151 }
152 ReceiveMsg();
153 }
154 else
155 {
156 Console.WriteLine("服务器断开链接");
157 }
158 }
159 catch (Exception)
160 {
161 Console.WriteLine("服务器断开链接");
162 }
163 }
164
165 //解封数据需要跟封装数据顺序一致 否则拿不到正确数据
166 private byte[] UnBlockData(byte[] data, out ushort protoId)
167 {
168 TestMemoryStreamUtil ms = new TestMemoryStreamUtil();
169 ms.SetLength(0);
170 ms.Write(data, 0, data.Length);
171 ms.Position = 0;
172 bool isCompress = ms.ReadBool();
173 ushort crc = ms.ReadUShort();
174 protoId = ms.ReadUShort();
175 ms.Position = 5;
176 data = new byte[data.Length - 5];//-5是因为 压缩1字节 crc2字节 协议号2字节 拿到的是真正消息的长度
177 ms.Read(data, 0, data.Length);//加密数据
178 ushort createCrc = Crc16.CalculateCrc16(data);
179 if (createCrc != crc)
180 {
181 Console.WriteLine("CRC Fail!");
182 return null;
183 }
184 data = SecurityUtil.Xor(data);//拿到压缩之后的数据
185 if (isCompress)
186 {
187 data = ZlibHelper.DeCompressBytes(data);//解压 原始数据
188 }
189 ms.Dispose();
190 return data;
191 }
192 }
193 }
注意：封装数据 和解封数据 写入 读取顺序要一致，否则拿不到正确数据。前后端也必须一致。包括 异或加密算法 、crc16。
协议id类：
1 public class TestCommonEventId
2 {
3 //事件
4 public const ushort _playerInfo = 10001;
5 }
6
7
8 public class TestCommonProtoId
9 {
10 //协议
11 public const ushort test1 = 20001;
12 }
测试的 PlayerInfo.cs
1 using Google.Protobuf;
2 using System;
3
4 namespace ZhaoBuHui.GateWayServer
5 {
6 class PlayerInfo : IDisposable
7 {
8 PlayerClientSocket playerClientSocket;
9 public PlayerInfo(PlayerClientSocket clientSocket)
10 {
11 playerClientSocket = clientSocket;
12 TestCommonEvent.AddEventListener(TestCommonProtoId.test1, Test1CallBack);
13 }
14
15 public void Dispose()
16 {
17 TestCommonEvent.RemoveEventListener(TestCommonProtoId.test1, Test1CallBack);
18 }
19
20 private void Test1CallBack(object obj)
21 {
22 test1 protoMsg = test1.Parser.ParseFrom((byte[])obj);
23 string name = protoMsg.Name;
24 int age = protoMsg.Age;
25 string Sex = protoMsg.Sex;
26 Console.WriteLine(string.Format("name = {0},age={1},Sex ={2}", name, age, Sex));
27
28 test1 proto = new test1
29 {
30 Age = new Random().Next(999, 1999),
31 Sex = "boy",
32 Name = "赵老三"
33 };
34 playerClientSocket.SendMsg(TestCommonProtoId.test1, proto.ToByteArray());
35
36 }
37 }
38 }
监听客户端发过来的消息，打印出来，然后又给客户端 回了一个消息。
test1： 用google protobuf 生成的c# 代码，不知道的请点击
----------------------------以下是客户端-------------------------------
客户端代码：和服务器基本一样，写好一个 复制粘贴过来就可以了。
TestSocketTcpRoutine.cs socketTcp访问器
1 using System;
2 using System.Collections.Generic;
3 using System.Net;
4 using System.Net.Sockets;
5
6 public class TestSocketTcpRoutine
7 {
8 private Socket m_ClientSocket;
9
10 // 是否连接过socket
11 private bool m_bDoConnect;
12 // 是否连接成功
13 private bool m_IsConnectSuccess;
14 private Action<bool> m_ConnectCompletedHander;
15
16 /// <summary>
17 /// 接收数据缓存区
18 /// </summary>
19 private byte[] m_Receive = new byte[1024];
20 private TestMemoryStreamUtil m_ReceiveMS = new TestMemoryStreamUtil();
21 private TestCommonEvent m_CommonEvent = new TestCommonEvent();
22
23 //发送数据队列
24 private Queue<byte[]> m_SendQueue = new Queue<byte[]>();
25 private TestMemoryStreamUtil m_SendMS = new TestMemoryStreamUtil();
26 //压缩阈值
27 private const int m_CompressLen = 200;//255也行 这个自定义
28
29
30 public void OnUpdate()
31 {
32 if (m_bDoConnect)
33 {
34 m_bDoConnect = false;
35 m_ConnectCompletedHander?.Invoke(m_IsConnectSuccess);
36 }
37 if (!m_IsConnectSuccess) return;
38 BeginSendMsg();
39 }
40
41 //发送消息
42 public void SendMsg(ushort protoId, byte[] data)
43 {
44 lock (m_SendQueue)
45 {
46 m_SendQueue.Enqueue(PackageData(protoId, data));
47 }
48 }
49 //封装数据【网络安全：压缩(优化)、加密、crc校验】
50 private byte[] PackageData(ushort protoId, byte[] data)
51 {
52 bool bCompress = data.Length > m_CompressLen;
53 //压缩
54 if (bCompress) data = ZlibHelper.CompressBytes(data);
55 //加密
56 data = SecurityUtil.Xor(data);
57 //crc
58 ushort crc = Crc16.CalculateCrc16(data);
59 TestMemoryStreamUtil ms = new TestMemoryStreamUtil();
60 ms.SetLength(0);
61 ms.WriteUShort((ushort)(data.Length + 5));//写入长度 压缩1字节 crc2字节 协议号2字节
62 ms.WriteBool(bCompress);//写入压缩
63 ms.WriteUShort(crc);//写入crc
64 ms.WriteUShort(protoId);//写入协议号
65 ms.Write(data, 0, data.Length);//写入data
66 return ms.ToArray();
67 }
68
69 //开始发送消息
70 private void BeginSendMsg()
71 {
72 while (true)
73 {
74 lock (m_SendQueue)
75 {
76 if (m_SendQueue.Count <= 0) break; ;
77 byte[] data = m_SendQueue.Dequeue();
78 m_ClientSocket.BeginSend(data, 0, data.Length, SocketFlags.None, SendCallBack, m_ClientSocket);
79 }
80 }
81 }
82
83 //发送回调
84 private void SendCallBack(IAsyncResult ar)
85 {
86 try
87 {
88 if (!ar.CompletedSynchronously) return;
89 m_ClientSocket.EndSend(ar);
90 }
91 catch (Exception ex)
92 {
93 Console.WriteLine(ex.ToString());
94 }
95 }
96
97 //连接socket服务器
98 public void Connect(string ip, int point, Action<bool> bConnectComplete)
99 {
100 m_ConnectCompletedHander = bConnectComplete;
101 if ((m_ClientSocket != null && m_ClientSocket.Connected) || m_IsConnectSuccess) return;
102 m_IsConnectSuccess = false;
103 try
104 {
105 m_ClientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
106 m_ClientSocket.BeginConnect(new IPEndPoint(IPAddress.Parse(ip), point), ConnectCallBack, m_ClientSocket);
107 }
108 catch (Exception ex)
109 {
110 m_ConnectCompletedHander?.Invoke(m_IsConnectSuccess);
111 UnityEngine.Debug.LogError(ex.ToString());
112 }
113 }
114
115 //连接回调
116 private void ConnectCallBack(IAsyncResult ar)
117 {
118 m_bDoConnect = true;
119 if (m_ClientSocket.Connected)
120 {
121 ReceiveMsg();
122 m_IsConnectSuccess = true;
123 }
124 else
125 {
126 m_IsConnectSuccess = false;
127 UnityEngine.Debug.LogError("服务器断开链接");
128 Dispose();
129 }
130 m_ClientSocket.EndConnect(ar);
131 }
132
133 //接收消息
134 private void ReceiveMsg()
135 {
136 try
137 {
138 //开始接收
139 m_ClientSocket.BeginReceive(m_Receive, 0, m_Receive.Length, SocketFlags.None, ReceiveCallBack, m_ClientSocket);
140 }
141 catch (Exception ex)
142 {
143 UnityEngine.Debug.LogError(ex.ToString());
144 }
145 }
146 //接收回调
147 private void ReceiveCallBack(IAsyncResult ar)
148 {
149 try
150 {
151 int len = m_ClientSocket.EndReceive(ar);
152 if (len > 0)
153 {
154 m_ReceiveMS.Position = m_ReceiveMS.Length;
155 m_ReceiveMS.Write(m_Receive, 0, len);
156 while (true)
157 {
158 //不完整包过来
159 if (len > 2)
160 {
161 m_ReceiveMS.Position = 0;
162 ushort currMsglen = m_ReceiveMS.ReadUShort();//当前包体的长度（压缩 crc 协议号 数据）
163 ushort currFullLen = (ushort)(currMsglen + 2);//包体+包头
164 //过来一个完整包
165 if (len >= currFullLen)
166 {
167 m_ReceiveMS.Position = 2;
168 byte[] currFullData = new byte[currMsglen];
169 m_ReceiveMS.Read(currFullData, 0, currMsglen);
170 //解封数据
171 currFullData = UnBlockData(currFullData, out ushort protoId);
172 if (currFullData == null) continue;
173 //派发消息
174 TestGameEntry.EventMgr.commonEvent.Dispatch(protoId, currFullData);
175 //处理剩余字节
176 if (len - currFullLen > 0)
177 {
178 byte[] residueData = new byte[len - currFullLen];
179 m_ReceiveMS.Position = currFullLen;
180 m_ReceiveMS.Read(residueData, 0, len - currFullLen);
181
182 m_ReceiveMS.SetLength(0);
183 m_ReceiveMS.Position = 0;
184 m_ReceiveMS.Write(residueData, 0, residueData.Length);
185 residueData = null;
186 }
187 else
188 {
189 m_ReceiveMS.SetLength(0);
190 break;
191 }
192 }
193 else
194 {
195 break; //没有收到一个完整的包 等待下一次处理
196 }
197 }
198 else
199 {
200 break;//还没收到数据
201 }
202 }
203 ReceiveMsg();//递归循环接收
204 }
205 else
206 {
207 UnityEngine.Debug.LogError("服务器断开链接");
208 Dispose();
209 }
210 }
211 catch (Exception)
212 {
213 UnityEngine.Debug.LogError("服务器断开链接");
214 Dispose();
215 }
216 }
217
218 //解封数据需要跟封装数据顺序一致 否则拿不到正确数据
219 private byte[] UnBlockData(byte[] data, out ushort protoId)
220 {
221 TestMemoryStreamUtil ms = new TestMemoryStreamUtil();
222 ms.SetLength(0);
223 ms.Write(data, 0, data.Length);
224 ms.Position = 0;
225 bool isCompress = ms.ReadBool();
226 ushort crc = ms.ReadUShort();
227 protoId = ms.ReadUShort();
228 ms.Position = 5;
229 data = new byte[data.Length - 5];//-5是因为 压缩1字节 crc2字节 协议号2字节 拿到的是真正消息的长度
230 ms.Read(data, 0, data.Length);//加密数据
231 ushort createCrc = Crc16.CalculateCrc16(data);
232 if (createCrc != crc)
233 {
234 UnityEngine.Debug.LogError("CRC Fail!");
235 return null;
236 }
237 data = SecurityUtil.Xor(data);//拿到压缩之后的数据
238 if (isCompress)
239 {
240 data = ZlibHelper.DeCompressBytes(data);//解压 原始数据
241 }
242 ms.Dispose();
243 return data;
244 }
245
246 public void Dispose()
247 {
248 m_bDoConnect = false;
249 m_IsConnectSuccess = false;
250 m_SendQueue.Clear();
251 }
252 }
TestSocketManager.cs 不变，不知道的请点击
TestSocket.cs 测试代码
1 using Google.Protobuf;
2 using UnityEngine;
3
4 public class TestSocket : MonoBehaviour
5 {
6 void Start()
7 {
8 TestGameEntry.EventMgr.commonEvent.AddEventListener(TestCommonProtoId.test1, Test1CallBack);
9 }
10
11 private void OnDestroy()
12 {
13 TestGameEntry.EventMgr.commonEvent.RemoveEventListener(TestCommonProtoId.test1, Test1CallBack);
14 }
15
16 private void Test1CallBack(object obj)
17 {
18 test1 protoMsg = test1.Parser.ParseFrom((byte[])obj);
19 string name = protoMsg.Name;
20 int age = protoMsg.Age;
21 string Sex = protoMsg.Sex;
22 UnityEngine.Debug.Log(string.Format("name = {0},age={1},Sex ={2}", name, age, Sex));
23 }
24
25 bool m_isConnectSuccess;
26 void Update()
27 {
28 if (Input.GetKeyDown(KeyCode.A))
29 {
30 TestGameEntry.SocketMgr.Connect("192.168.124.2", 8082, (bool isConnectSuccess) =>
31 {
32 m_isConnectSuccess = true;
33 UnityEngine.Debug.Log("连接192.168.124.2:8082" + (isConnectSuccess ? "成功" : "失败"));
34 });
35 }
36
37 if (Input.GetKeyDown(KeyCode.S))
38 {
39 if (!m_isConnectSuccess) return;
40 test1 proto = new test1
41 {
42 Age = Random.Range(1, 100),
43 Sex = "boy",
44 Name = "赵不灰"
45 };
46 TestGameEntry.SocketMgr.SendMsg(TestCommonProtoId.test1, proto.ToByteArray());
47 }
48 }
49 }
--------------------------------------以下是扩展辅助类-------------------------------------------
Crc16.cs 校验
1 public class Crc16
2 {
3 // Table of CRC values for high-order byte
4 private static readonly byte[] _auchCRCHi = new byte[] { 0x01, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x41 };
5
6 // Table of CRC values for low-order byte
7 private static readonly byte[] _auchCRCLo = new byte[] { 0x01, 0xC1, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7, 0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC, 0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3, 0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32, 0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF, 0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26, 0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1, 0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA, 0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5, 0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0, 0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89, 0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C, 0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83, 0x41, 0x81, 0x80, 0x41 };
8
9 /// <summary>
10 /// 获得CRC16效验码
11 /// </summary>
12 /// <param name="buffer"></param>
13 /// <returns></returns>
14 public static ushort CalculateCrc16(byte[] buffer)
15 {
16 byte crcHi = 0xff; // high crc byte initialized
17 byte crcLo = 0xff; // low crc byte initialized
18 for (int i = 0; i < buffer.Length; i++)
19 {
20 int crcIndex = crcHi ^ buffer[i];
21 // calculate the crc lookup index
22 crcHi = (byte)(crcLo ^ _auchCRCHi[crcIndex]);
23 crcLo = _auchCRCLo[crcIndex];
24 }
25 return (ushort)(crcHi << 8 | crcLo);
26 }
27 }
SecurityUtil.cs 异或加密
1 public sealed class SecurityUtil
2 {
3 #region xorScale 异或因子
4 /// <summary>
5 /// 异或因子
6 /// </summary>
7 private static readonly byte[] xorScale = new byte[] { 45, 66, 38, 55, 23, 254, 9, 165, 90, 19, 41, 45, 201, 58, 55, 37, 254, 185, 165, 169, 19, 171 };//.data文件的xor加解密因子
8 #endregion
9
10 /// <summary>
11 /// 对数组进行异或[]
12 /// </summary>
13 /// <param name="buffer"></param>
14 /// <returns></returns>
15 public static byte[] Xor(byte[] buffer)
16 {
17 int iScaleLen = xorScale.Length;
18 for (int i = 0; i < buffer.Length; i++)
19 {
20 buffer[i] = (byte)(buffer[i] ^ xorScale[i % iScaleLen]);
21 }
22 return buffer;
23 }
24 }
ZlibHelper.cs 压缩帮助类
1 using ComponentAce.Compression.Libs.zlib;
2 using System;
3 using System.IO;
4
5 /// <summary>
6 /// 压缩帮助类
7 /// </summary>
8 public class ZlibHelper
9 {
10 #region CompressBytes 对原始字节数组进行zlib压缩，得到处理结果字节数组
11 /// <summary>
12 /// 对原始字节数组进行zlib压缩，得到处理结果字节数组
13 /// </summary>
14 /// <param name="OrgByte">需要被压缩的原始Byte数组数据</param>
15 /// <param name="CompressRate">压缩率：默认为zlibConst.Z_DEFAULT_COMPRESSION</param>
16 /// <returns>压缩后的字节数组，如果出错则返回null</returns>
17 public static byte[] CompressBytes(byte[] OrgByte, int CompressRate = zlibConst.Z_BEST_SPEED)
18 {
19 if (OrgByte == null) return null;
20
21 using (MemoryStream OrgStream = new MemoryStream(OrgByte))
22 {
23 using (MemoryStream CompressedStream = new MemoryStream())
24 {
25 using (ZOutputStream outZStream = new ZOutputStream(CompressedStream, CompressRate))
26 {
27 try
28 {
29 CopyStream(OrgStream, outZStream);
30 outZStream.finish();//重要！否则结果数据不完整！
31 //程序执行到这里，CompressedStream就是压缩后的数据
32 if (CompressedStream == null) return null;
33
34 return CompressedStream.ToArray();
35 }
36 catch
37 {
38 return null;
39 }
40 }
41 }
42 }
43 }
44 #endregion
45
46 #region DeCompressBytes 对经过zlib压缩的数据，进行解密和zlib解压缩，得到原始字节数组
47 /// <summary>
48 /// 对经过zlib压缩的数据，进行解密和zlib解压缩，得到原始字节数组
49 /// </summary>
50 /// <param name="CompressedBytes">被压缩的Byte数组数据</param>
51 /// <returns>解压缩后的字节数组，如果出错则返回null</returns>
52 public static byte[] DeCompressBytes(byte[] CompressedBytes)
53 {
54 if (CompressedBytes == null) return null;
55
56 using (MemoryStream CompressedStream = new MemoryStream(CompressedBytes))
57 {
58 using (MemoryStream OrgStream = new MemoryStream())
59 {
60 using (ZOutputStream outZStream = new ZOutputStream(OrgStream))
61 {
62 try
63 {
64 //-----------------------
65 //解压缩
66 //-----------------------
67 CopyStream(CompressedStream, outZStream);
68 outZStream.finish();//重要！
69 //程序执行到这里，OrgStream就是解压缩后的数据
70
71 if (OrgStream == null)
72 {
73 return null;
74 }
75 return OrgStream.ToArray();
76 }
77 catch
78 {
79 return null;
80 }
81 }
82 }
83 }
84 }
85 #endregion
86
87 #region CompressString 压缩字符串
88 /// <summary>
89 /// 压缩字符串
90 /// </summary>
91 /// <param name="SourceString">需要被压缩的字符串</param>
92 /// <returns>压缩后的字符串，如果失败则返回null</returns>
93 public static string CompressString(string SourceString, int CompressRate = zlibConst.Z_DEFAULT_COMPRESSION)
94 {
95 byte[] byteSource = System.Text.Encoding.UTF8.GetBytes(SourceString);
96 byte[] byteCompress = CompressBytes(byteSource, CompressRate);
97 if (byteCompress != null)
98 {
99 return Convert.ToBase64String(byteCompress);
100 }
101 else
102 {
103 return null;
104 }
105 }
106 #endregion
107
108 #region DecompressString 解压字符串
109 /// <summary>
110 /// 解压字符串
111 /// </summary>
112 /// <param name="SourceString">需要被解压的字符串</param>
113 /// <returns>解压后的字符串，如果处所则返回null</returns>
114 public static string DecompressString(string SourceString)
115 {
116 byte[] byteSource = Convert.FromBase64String(SourceString);
117 byte[] byteDecompress = DeCompressBytes(byteSource);
118 if (byteDecompress != null)
119 {
120
121 return System.Text.Encoding.UTF8.GetString(byteDecompress);
122 }
123 else
124 {
125 return null;
126 }
127 }
128 #endregion
129
130 #region CopyStream 拷贝流
131 /// <summary>
132 /// 拷贝流
133 /// </summary>
134 /// <param name="input"></param>
135 /// <param name="output"></param>
136 private static void CopyStream(Stream input, Stream output)
137 {
138 byte[] buffer = new byte[2000];
139 int len;
140 while ((len = input.Read(buffer, 0, 2000)) > 0)
141 {
142 output.Write(buffer, 0, len);
143 }
144 output.Flush();
145 }
146 #endregion
147
148 #region GetStringByGZIPData 将解压缩过的二进制数据转换回字符串
149 /// <summary>
150 /// 将解压缩过的二进制数据转换回字符串
151 /// </summary>
152 /// <param name="zipData"></param>
153 /// <returns></returns>
154 public static string GetStringByGZIPData(byte[] zipData)
155 {
156 return (string)(System.Text.Encoding.UTF8.GetString(zipData));
157 }
158 #endregion
159 }
源码地址：http://www.componentace.com/download/
自行选择一个版本，我用的是 ZLIB.NET Free v.1.04 - Free
下载完成之后，解压，把zlib.net.dll 导入到unity客户端
服务端则导入源码文件（source）即可。
不懂的小伙伴可自行留言哈，欢迎大家提出批评和建议~
最新文章
- js测试题
- 【Python数据分析】Python3操作Excel(二) 一些问题的解决与优化
- 优雅的数组降维——Javascript中apply方法的妙用
- VMware Tools安装
- ZOJ 3329-One Person Game（概率dp，迭代处理环）
- BZOJ 2716 Violet 3 天使玩偶 CDQ分治
- MSSQL - 存储过程事物
- Network Panel说明
- ignite中的sql查询
- Python基础篇(九)
- UVA-624 CD---01背包+输出路径
- mysql-workbench工具update（更新）失败的解决办法
- 深入浅出NIO Socket实现机制
- VMware Workstation 14 激活码
- Nginx 指令目录（中文版）
- centos6.5安装无线网卡驱动并配置wifi
- JAVA 传递
- java 多线程 26 ： 线程池
- 微服务之springCloud和docker-provide(二)
- 给iOS开发新手送点福利,简述UIAlertView的属性和用法