有時(shí)候我們要寫通信模塊，寫完之后總要測(cè)測(cè)通不通吧。我不知道別人是怎么做的，但是我自己覺得，要不寫個(gè)小型服務(wù)器（程序？），只能接收和發(fā)送消息就行了，于是就上網(wǎng)翻了下，好像并沒有現(xiàn)成的代碼（嘆氣），還是自己寫一個(gè)吧。

HTTP也是Tcp通信，上篇文章的Tcp服務(wù)器端其實(shí)拿過來用就行了，只是出了點(diǎn)小問題導(dǎo)致無法正常返回，所以寫下來記錄一下，希望以后更細(xì)心，別再犯類似錯(cuò)誤。

2. using System;
3. using System.Collections;
4. using System.IO;
5. using System.Net;
6. using System.Net.Sockets;
7. using System.Threading;
8. using System.Text;
11. namespace TestServer
12. {
13. public class MyHttpServer
14. {
15. string ip;
16. int port;
17. TcpListener listener;
18. StreamWriter outStream;
19. TcpClient remoteClient;
20. NetworkStream ClientStream;
23. public MyHttpServer(string inip,int inport)
24. {
25. ip = inip;
26. port = inport;
28. }
30. public void listen()
31. {
32. listener = new TcpListener(IPAddress.Parse(ip),port);
33. listener.Start();
34. Console.WriteLine(“監(jiān)聽啟動(dòng)!”);
37. byte[] buffer = new byte[1024];
39. while (true)
40. {
41. try
42. {
43. remoteClient = listener.AcceptTcpClient();//阻塞
44. Console.WriteLine(“有客戶端進(jìn)入!”);
45. ClientStream = remoteClient.GetStream();
47. int byteRead = ClientStream.Read(buffer, 0, 1024);
48. if (byteRead == 0)
49. {
50. Console.WriteLine(“沒東西啊?。?#8221;);
51. continue;
52. }
54. string msg = Encoding.UTF8.GetString(buffer, 0, byteRead);
55. Console.WriteLine(“接收數(shù)據(jù)：” msg);
58. string head = “”;
59. char [] charArray = Encoding.UTF8.GetChars(buffer);
60. int i = 0;
61. while(!charArray[i].Equals(‘ ‘))
62. {
63. head = charArray[i];
64. i;
65. }
66. Console.WriteLine(head);
68. switch (head)
69. {
70. case “POST”:
71. {
72. string msg2 = “這是POST方法”;
73. byte[] buffer2 = Encoding.UTF8.GetBytes(msg2);//將字符串轉(zhuǎn)化為二進(jìn)制
74. ClientStream.Write(buffer2, 0, buffer2.Length);//將轉(zhuǎn)換好的二進(jìn)制數(shù)據(jù)寫入流中并發(fā)送
75. remoteClient.Close();//問題就出在這里，一定要關(guān)閉
76. }
77. break;
78. case “GET”:
79. {
80. string msg2 = “這是GET方法”;
81. byte[] buffer2 = Encoding.UTF8.GetBytes(msg2);
82. ClientStream.Write(buffer2, 0, buffer2.Length);
83. remoteClient.Close();//問題就出在這里，一定要關(guān)閉
84. }
85. break;
86. }
87. }
88. catch (Exception ex)
89. {
90. Console.WriteLine(“異常：” ex.Message);
91. break;
92. }
93. };
94. }
95. }
97. class Program
98. {
99. static void Main(string[] args)
100. {
101. Console.WriteLine(“Hello World!”);
102. Console.WriteLine(“—————————————“);
103. MyHttpServer server = new MyHttpServer(“127.0.0.1”,8080);
104. Thread thread = new Thread(new ThreadStart(server.listen));
105. thread.Start();
106. }
107. }
108. }

remoteClient.Close();就因?yàn)檫@里沒寫，客戶端發(fā)的消息能收到，但是一直得不到反饋，而客戶端打開的情況下，退出服務(wù)端，客戶端才會(huì)接受到反饋，當(dāng)然，是空的。

以后要多加注意，Tcp是連接性的通訊，服務(wù)端接受消息后如果不手動(dòng)關(guān)閉連接，系統(tǒng)默認(rèn)為連接并未斷開，也就不會(huì)將消息返回。

另外，話說我明明是做C 的，怎么貼的都是C#代碼，emmmmm…..