话说上一次做完http代理工具后,没有测试QQ代理,回家试了一下,做了一下简单补充,并测试通过。
上次的文章提到,所有公司的服务器端口都封了,只剩下几个通讯的已经正在便用的。
于是,在本地XP下试了一下端口劫持,也称端口复用。抢占80端口。
关键代码就一句:tcplistener.Server.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
在本地实现抢占80端口后,所有的http请求本地iis的,就出现访问不了的情况,所以我又实现了给IIS中转请求
即收到消息后,分析是否IIS请求,如果是,则转发请求到IIS,其它的就转发给相应其它的网站。
由于转发给本机的IIS请求速度过快,这时候需要适当延时,不然问题又出来了。
端口复用在win2003下是不支持的,我也没办法。
但是可通过不同IP监听同一端口如:192.168.1.48 8000 和192.168.1.49 8000(此时需要为主机分配多个IP)
接下来继续上代码,并提供代码下载:
Proxy.cs
Proxy代理类
using
System;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using System.Net.Sockets;
using System.Threading;
namespace TcpProxy
{
/// <summary>
/// by 路过秋天
/// http://www.cnblogs.com/cyq1162
/// </summary>
class Program
{
static void Main( string [] args)
{
Listen( 80 );
}
static void Write( string msg)
{
Console.WriteLine(msg);
}
static void Listen( int port)
{
Write( " 准备监听端口: " + port);
System.Net.IPAddress[] ips = System.Net.Dns.GetHostAddresses(System.Net.Dns.GetHostName());
foreach (System.Net.IPAddress ip in ips)
{
Write(ip.ToString());
}
System.Net.IPAddress ipp = System.Net.IPAddress.Parse( " 0.0.0.0 " );
TcpListener tcplistener = new TcpListener(ipp,port);
// tcplistener.ExclusiveAddressUse = false;
tcplistener.Server.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true );
// tcplistener.Server.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.,ProtocolType.IP);
try
{
tcplistener.Start();
}
catch (Exception err)
{
Write(err.Message);
Write( " 该端口已被占用,请更换端口号!!! " );
ReListen(tcplistener);
}
Write( " 确认:y/n (yes or no): " );
string isOK = Console.ReadLine();
if (isOK == " y " )
{
Write( " 成功监听端口: " + port);
// 侦听端口号
Socket socket;
while ( true )
{
socket = tcplistener.AcceptSocket();
// 并获取传送和接收数据的Scoket实例
Proxy proxy = new Proxy(socket);
// Proxy类实例化
Thread thread = new Thread( new ThreadStart(proxy.Run));
// 创建线程
thread.Start();
System.Threading.Thread.Sleep( 200 );
// 启动线程
}
}
else
{
ReListen(tcplistener);
}
}
static void ReListen(TcpListener listener)
{
if (listener != null )
{
listener.Stop();
listener = null ;
}
Write( " 请输入监听端口号: " );
string newPort = Console.ReadLine();
int port;
if ( int .TryParse(newPort, out port))
{
Listen(port);
}
else
{
ReListen(listener);
}
}
}
}
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using System.Net.Sockets;
using System.Threading;
namespace TcpProxy
{
/// <summary>
/// by 路过秋天
/// http://www.cnblogs.com/cyq1162
/// </summary>
class Program
{
static void Main( string [] args)
{
Listen( 80 );
}
static void Write( string msg)
{
Console.WriteLine(msg);
}
static void Listen( int port)
{
Write( " 准备监听端口: " + port);
System.Net.IPAddress[] ips = System.Net.Dns.GetHostAddresses(System.Net.Dns.GetHostName());
foreach (System.Net.IPAddress ip in ips)
{
Write(ip.ToString());
}
System.Net.IPAddress ipp = System.Net.IPAddress.Parse( " 0.0.0.0 " );
TcpListener tcplistener = new TcpListener(ipp,port);
// tcplistener.ExclusiveAddressUse = false;
tcplistener.Server.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true );
// tcplistener.Server.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.,ProtocolType.IP);
try
{
tcplistener.Start();
}
catch (Exception err)
{
Write(err.Message);
Write( " 该端口已被占用,请更换端口号!!! " );
ReListen(tcplistener);
}
Write( " 确认:y/n (yes or no): " );
string isOK = Console.ReadLine();
if (isOK == " y " )
{
Write( " 成功监听端口: " + port);
// 侦听端口号
Socket socket;
while ( true )
{
socket = tcplistener.AcceptSocket();
// 并获取传送和接收数据的Scoket实例
Proxy proxy = new Proxy(socket);
// Proxy类实例化
Thread thread = new Thread( new ThreadStart(proxy.Run));
// 创建线程
thread.Start();
System.Threading.Thread.Sleep( 200 );
// 启动线程
}
}
else
{
ReListen(tcplistener);
}
}
static void ReListen(TcpListener listener)
{
if (listener != null )
{
listener.Stop();
listener = null ;
}
Write( " 请输入监听端口号: " );
string newPort = Console.ReadLine();
int port;
if ( int .TryParse(newPort, out port))
{
Listen(port);
}
else
{
ReListen(listener);
}
}
}
}
Program.cs
Main函数入口
using
System;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using System.Net.Sockets;
using System.Threading;
namespace TcpProxy
{
/// <summary>
/// by 路过秋天
/// http://www.cnblogs.com/cyq1162
/// </summary>
class Program
{
static void Main( string [] args)
{
Listen( 80 );
}
static void Write( string msg)
{
Console.WriteLine(msg);
}
static void Listen( int port)
{
Write( " 准备监听端口: " + port);
System.Net.IPAddress[] ips = System.Net.Dns.GetHostAddresses(System.Net.Dns.GetHostName());
foreach (System.Net.IPAddress ip in ips)
{
Write(ip.ToString());
}
System.Net.IPAddress ipp = System.Net.IPAddress.Parse( " 0.0.0.0 " );
TcpListener tcplistener = new TcpListener(ipp,port);
// tcplistener.ExclusiveAddressUse = false;
tcplistener.Server.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true );
// tcplistener.Server.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.,ProtocolType.IP);
try
{
tcplistener.Start();
}
catch (Exception err)
{
Write(err.Message);
Write( " 该端口已被占用,请更换端口号!!! " );
ReListen(tcplistener);
}
Write( " 确认:y/n (yes or no): " );
string isOK = Console.ReadLine();
if (isOK == " y " )
{
Write( " 成功监听端口: " + port);
// 侦听端口号
Socket socket;
while ( true )
{
socket = tcplistener.AcceptSocket();
// 并获取传送和接收数据的Scoket实例
Proxy proxy = new Proxy(socket);
// Proxy类实例化
Thread thread = new Thread( new ThreadStart(proxy.Run));
// 创建线程
thread.Start();
System.Threading.Thread.Sleep( 200 );
// 启动线程
}
}
else
{
ReListen(tcplistener);
}
}
static void ReListen(TcpListener listener)
{
if (listener != null )
{
listener.Stop();
listener = null ;
}
Write( " 请输入监听端口号: " );
string newPort = Console.ReadLine();
int port;
if ( int .TryParse(newPort, out port))
{
Listen(port);
}
else
{
ReListen(listener);
}
}
}
}
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using System.Net.Sockets;
using System.Threading;
namespace TcpProxy
{
/// <summary>
/// by 路过秋天
/// http://www.cnblogs.com/cyq1162
/// </summary>
class Program
{
static void Main( string [] args)
{
Listen( 80 );
}
static void Write( string msg)
{
Console.WriteLine(msg);
}
static void Listen( int port)
{
Write( " 准备监听端口: " + port);
System.Net.IPAddress[] ips = System.Net.Dns.GetHostAddresses(System.Net.Dns.GetHostName());
foreach (System.Net.IPAddress ip in ips)
{
Write(ip.ToString());
}
System.Net.IPAddress ipp = System.Net.IPAddress.Parse( " 0.0.0.0 " );
TcpListener tcplistener = new TcpListener(ipp,port);
// tcplistener.ExclusiveAddressUse = false;
tcplistener.Server.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true );
// tcplistener.Server.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.,ProtocolType.IP);
try
{
tcplistener.Start();
}
catch (Exception err)
{
Write(err.Message);
Write( " 该端口已被占用,请更换端口号!!! " );
ReListen(tcplistener);
}
Write( " 确认:y/n (yes or no): " );
string isOK = Console.ReadLine();
if (isOK == " y " )
{
Write( " 成功监听端口: " + port);
// 侦听端口号
Socket socket;
while ( true )
{
socket = tcplistener.AcceptSocket();
// 并获取传送和接收数据的Scoket实例
Proxy proxy = new Proxy(socket);
// Proxy类实例化
Thread thread = new Thread( new ThreadStart(proxy.Run));
// 创建线程
thread.Start();
System.Threading.Thread.Sleep( 200 );
// 启动线程
}
}
else
{
ReListen(tcplistener);
}
}
static void ReListen(TcpListener listener)
{
if (listener != null )
{
listener.Stop();
listener = null ;
}
Write( " 请输入监听端口号: " );
string newPort = Console.ReadLine();
int port;
if ( int .TryParse(newPort, out port))
{
Listen(port);
}
else
{
ReListen(listener);
}
}
}
}
OK,打完收下。
点击此处下载代码
转载于:https://my.oschina.net/secyaher/blog/274401