小紀的天空

 1//HttpListener 只支援win2003及xp哦~
 2using System;
 3using System.Collections.Generic;
 4using System.Text;
 5using System.Net; 
 6using System.IO;
 7
 8namespace DIOListener
 9...{
10
11  public class HttpServer
12  ...{
13    protected HttpListener Listener;
14    protected bool IsStarted = false;
15
16    //使用傳入一個URI String 例如http://127.0.0.1:8080/ 來開始一個我們的HttpServer
17    public void Start(string strUrl)
18    ...{
19      if (IsStarted) //已經再Listen就直接Return
20        return;
21
22      if (Listener == null)
23        Listener = new HttpListener();
24
25      //使用傳入的URI String 例如http://127.0.0.1:8080/
26      Listener.Prefixes.Add(strUrl);
27
28      IsStarted = true;
29      Listener.Start(); //開始Listen
30
31      //以非同步方式取得Context
32      IAsyncResult result = this.Listener.BeginGetContext(
33        new AsyncCallback(WebRequestCallback), this.Listener);
34    }
35
36    //停止我們的HttpServer
37    public void Stop()
38    ...{
39      if (Listener != null)
40      ...{
41        Listener.Close();
42        Listener = null;
43        IsStarted = false;
44      }
45    }
46
47    //有個Web需求進來
48    private void WebRequestCallback(IAsyncResult result)
49    ...{
50      //如果Http Server已經停止則不理會
51      if (Listener == null)
52        return;
53
54      //取得Context
55      HttpListenerContext Context = this.Listener.EndGetContext(result);
56
57      //立即開始另一個非同步取得Context
58      Listener.BeginGetContext(new AsyncCallback(WebRequestCallback), this.Listener);
59
60      //處理我們的Web需求
61      ProcessRequest(Context);
62    }
63
64    //處理我們的Web需求
65    private void ProcessRequest(System.Net.HttpListenerContext Context)
66    ...{
67      HttpListenerResponse Response = Context.Response;
68      Stream OutputStream = Response.OutputStream;
69
70      //產生回傳的Byte Array
71      byte[] bOutput = System.Text.Encoding.UTF8.GetBytes("<H1>Hello World!!!</H1>");
72
73      //設定ContentType
74      Response.ContentType = "text/html";
75
76      //設定內容長度
77      Response.ContentLength64 = bOutput.Length;
78      
79      //寫到Stream中
80      OutputStream.Write(bOutput, 0, bOutput.Length);
81
82      //關閉Stream
83      OutputStream.Close();
84    }
85  }
86}