软件架构师何志丹
本程序仅仅是入门级程序。所以不考虑1。多线程。
2，安全性。
3，不考虑端点下载文件。
4，Keep-Alive。
5，不考虑head。
6,为了简洁，删掉了catch的内容。
exe的祖父目录必须有wwwroot目录，且目录有index.htm，内容不限。
开发环境： WinXP+VS2010C#
一。新建一个项目TestWeb。项目类型：Windows窗体应用程序。
二。新建类RequestProcessor。
using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Diagnostics;
namespace TestWeb
{
class RequestProcessor
{
public bool ParseRequestAndProcess(string[] RequestLines)//解析内容
{
for (int i = 0; i < RequestLines.Length; i++)
System.Diagnostics.Trace.Write(RequestLines[i]);
char[] sp = new Char[1] { ' ' };
string[] strs = RequestLines[0].Split(sp);
if (strs[0] == "GET")
{
Send(strs[1], 0, 0);
}
return false;
}
void Send(string filename, long start, long length)//发送文件（文件头和文件）
{
string strFileName = GetPathFileName(filename);
FileStream fs = null;
try
{
fs = new FileStream(strFileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
}
catch (IOException)// FileNotFoundException)
{//不能将 e.Message,发给浏览器，否则会有安全隐患的
SendHeadrAndStr("打开文件" + filename + "失败。
");
return;
}
if (length == 0)
length = fs.Length - start;
SendHeader("text/html", (fs.Length == length), start, length);
sendContent(fs, start, length);
}
public void SendHeadrAndStr(String str)//直接将str的内容发给html
{
byte[] sendchars = Encoding.Default.GetBytes((str).ToCharArray());
SendHeader("text/html", true, 0, sendchars.Length);
SendStr(Encoding.Default, str);
}
private void SendHeader(string fileType, bool bAll, long start, long length)//发送文件头
{
try
{
Encoding coding = Encoding.Default;
string strSend;
string strState = (bAll) ?
"HTTP/1.1 200 OK" : "HTTP/1.1 206 Partial Content";
SendStr(coding, strState + "\r\n");
SendStr(coding, "Date: \r\n");
SendStr(coding, "Server: httpsrv/1.0\r\n");
SendStr(coding, "MIME-Version: 1.0\r\n");
SendStr(coding, "Content-Type: " + fileType + "\r\n");
strSend = "Content-Length: " + length.ToString();
SendStr(coding, strSend + "\r\n");
//发送一个空行
SendStr(coding, "\r\n");
}
catch (ArgumentException)//the request is WRONG
{
}
}
private void sendContent(FileStream fs, long start, long length)//发生文件内容
{
try
{
//报文头发送完成，開始发送正文
const int SOCKETWINDOWSIZE = 8192;
long r = SOCKETWINDOWSIZE;
int rd = 0;
Byte[] senddatas = new Byte[SOCKETWINDOWSIZE];
fs.Seek(start, SeekOrigin.Begin);
do
{
r = start + length - fs.Position;
//fs.BeginRead(s,s,s,s,d) 以后使用的版本号。用以提高读取的效率
if (r >= SOCKETWINDOWSIZE)
rd = fs.Read(senddatas, 0, SOCKETWINDOWSIZE);
else
rd = fs.Read(senddatas, 0, (int)r);
mSockSendData.Send(senddatas, 0, rd, SocketFlags.None);
} while (fs.Position != start + length);
}
catch (SocketException e)
{
throw e;
}
catch (IOException e)
{
throw e;
}
}
public Socket mSockSendData;//Notice: get from ClientSocketThread.s
private string GetPathFileName(string filename)
{
const string strDefaultPage = "index.htm";
const string strWWWRoot = "..\\..\\wwwroot\\";
string strFileName = String.Copy(filename);
if ("/" == strFileName)
strFileName = strDefaultPage;
return System.AppDomain.CurrentDomain.BaseDirectory + strWWWRoot + strFileName;
}
private void SendStr(Encoding coding, string strSend)//发送一个字符串
{
Byte[] sendchars = new Byte[512];
sendchars = coding.GetBytes((strSend).ToCharArray());
mSockSendData.Send(sendchars, 0, sendchars.Length, SocketFlags.None);
}
}
}
三，新建类ClientSocketThread。
using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
namespace TestWeb
{
class ClientSocketThread
{
public TcpListener tcpl;//Notice: get from SrvMain.tcpl
private static Encoding ASCII = Encoding.ASCII;
public void HandleThread()
{
Thread currentThread = Thread.CurrentThread;
try
{
Socket s = tcpl.AcceptSocket();
RequestProcessor aRequestProcessor = new RequestProcessor(); //Notice:
aRequestProcessor.mSockSendData = s;//Notice: so that the processor can work
const int BUFFERSIZE = 4096;//that's enough???
Byte[] readclientchar = new Byte[BUFFERSIZE];
char[] sps = new Char[2] { '\r', '\n' };
string[] RequestLines = new string[32];
do
{
//use BUFFERSIZE contral the receive data size to avoid the BufferOverflow attack
int rc = s.Receive(readclientchar, 0, BUFFERSIZE, SocketFlags.None);
string strReceive = ASCII.GetString(readclientchar, 0, rc);
RequestLines = strReceive.Split(sps);
} while (aRequestProcessor.ParseRequestAndProcess(RequestLines));
s.Close();
}
catch (SocketException)
{
}
}
}
}
四。主对话框中添加button，按键的对应函数加例如以下代码。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace TestWeb
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
try
{
//启动监听程序
TcpListener tcpl;
IPAddress LocalIP = Dns.Resolve("localhost").AddressList[0];
tcpl = new TcpListener(LocalIP, 80); // listen on port 80
tcpl.Start();
// int ThreadID = 0;
while (true)
{
while (!tcpl.Pending())
{
Thread.Sleep(100);
}
//启动接受线程
ClientSocketThread myThreadHandler = new ClientSocketThread();
myThreadHandler.tcpl = tcpl;//Notice: dont forget do this
ThreadStart myThreadStart = new ThreadStart(myThreadHandler.HandleThread);
Thread myWorkerThread = new Thread(myThreadStart);
myWorkerThread.Start();
}
}
catch (SocketException )
{
}
catch (FormatException)
{
}
catch (Exception )
{
}
// Console.Read();
}
}
}
五，启动TestWeb.exe，并单击主对话框上的button。在浏览器中输入：http://127.0.0.1/ 或http://127.0.0.1:80。
源代码下载：
http://download.csdn.net/detail/he_zhidan/8884733
