C# 实现代理服务器功能

Mentalis.org Proxy ~~~~~~~~~~~~~~~~~~ (Tuesday, April 30, 2002) (1) How to build the source code The source distribution comes with a file 'make.bat'. If you run this file, it will compile all the classes into an executable (Proxy.exe) and it will output an XML file that can be used to generate the class documentation (like the Proxy.chm file). (2) How to use it Here's a list of the commands and a small description of each command. help Shows a list of all available commands and a very short description of each command. uptime Shows the uptime of the proxy server in the following format: [d.]hh:mm:ss[.ff] where d is the number of days, hh the number of hours, mm the number of minutes, ss the number of seconds and ff the number of fractional seconds. version Shows the version of the proxy server. listusers Lists all the users in the user listing. These usernames can be used for SOCKS5 authentication. adduser Adds a user to the user list. deluser Deletes a user from the user list. listlisteners Prints a list of all the active listeners and their IDs. You'll need this ID when you want to remove a specific listener. addlistener Creates a new listener. See (a) for more information about this. dellistener Deletes a listener from the listeners collection. To delete a listener, you'll need its ID (a 32-byte string). You can find this ID by executing the 'listlisteners' command. (3) License & Contact information All the code in this source code distribution is copyrighted by The KPD-Team, � 2002. Visit http://www.mentalis.org/ for the latest version of this project. E-Mail us at info@mentalis.org if you have comments or suggestions for us. Make sure you read the license before you use the code. This directory should contain a file license.txt which contains a copy of the source code license. The same license is also included in each class file and in the class documentation. (4) Final Notes The user/password authentication needs more work. It's already implemented in the base classes, but the Proxy class doesn't really use it. (a) AddListener Command There are currently four types of listeners you can start: an HTTP proxy, an FTP proxy, a SOCKS proxy and a PortMapper. HTTP proxy An HTTP proxy will typically relay traffic between web servers and web browsers. The full class name of the HTTP proxy is "Org.Mentalis.Proxy.Http.HttpListener" (without the quotes). The construction string of this object is "host:<ip>;int:<port>" where <ip> should be replaced by the IP address you want the server to listen on for incoming connections and <port> should be replaced by the port number you want to listen on for connections. For instance, if you want an HTTP proxy server on IP address 10.0.0.1 port 100, this would be the command sequence >addlistener Please enter the full class name of the Listener object you're trying to add: (ie. Org.Mentalis.Proxy.Http.HttpListener) Org.Mentalis.Proxy.Http.HttpListener Please enter the construction parameters: host:10.0.0.1;int:100 HTTP service on 10.0.0.1:100 started. If you have your HTTP proxy running, you're almost done. Now, all you have to do is to make sure your web browser uses that proxy server. Internet Explorer users can go to Tools->Internet Options-> Connections Tab->LAN Settings Check the 'Use a proxy server for your LAN' checkbox and make sure the address and port text boxes are set to the correct IP address and port number. FTP proxy An FTP proxy will typically relay traffic between FTP servers and FTP clients. The full class name of the FTP proxy is "Org.Mentalis.Proxy.Ftp.FtpListener" (without the quotes). The construction string of this object is "host:<ip>;int:<port>" where <ip> should be replaced by the IP address you want the server to listen on for incoming connections and <port> should be replaced by the port number you want to listen on for connections. For instance, if you want an FTP proxy server on IP address 10.0.0.1 port 21, this would be the command sequence >addlistener Please enter the full class name of the Listener object you're trying to add: (ie. Org.Mentalis.Proxy.Http.HttpListener) Org.Mentalis.Proxy.Ftp.FtpListener Please enter the construction parameters: host:10.0.0.1;int:21 FTP service on 10.0.0.1:21 started. Search for the PROXY options in your favorite FTP client. It should support something like "OPEN command", "USER user@host:port" or "USER user@host port". Pick one, fill in the correct values for host and port, and you're ready. (There may also be some authentication fields; leave these blank.) SOCKS proxy A SOCKS proxy can relay data from and to any application using any subprotocol. The full class name of the SOCKS proxy is "Org.Mentalis.Proxy.Socks.SocksListener" (without the quotes). The construction string of this object is "host:<ip>;int<port>" -or- "host:<ip>;int<port>;authlist". You can use that last version if you want the users of the SOCKS5 server to be authenticated. Here's an example of how to create a SOCKS server listening on 10.0.0.1 port 1080 >addlistener Please enter the full class name of the Listener object you're trying to add: (ie. Org.Mentalis.Proxy.Http.HttpListener) Org.Mentalis.Proxy.Socks.SocksListener Please enter the construction parameters: host:10.0.0.1;int:1080 SOCKS service on 10.0.0.1:1080 started. Since the configuration of a SOCKS proxy in your applications differ from application to application, I'm afraid you'll have to figure it out yourself. Note that the Socks5Listener class does not fully implement the SOCKS5 protocol. It does not support UPD sockets. PORTMAP Portmap does exactely what its name says: it maps a port on a specific IP address to another port on another IP address. This can be useful for email and news applications. The full class name of the PortMap listener is "Org.Mentalis.Proxy.PortMap.PortMapListener" (without the quotes). The construction string of this object is "host:<l_ip>;int:<l_port>;host:<m_ip>;int:<m_port>" Where l_ip is the IP address to listen on, l_port is the port to listen on, m_ip is the IP address where all the traffic has to be mapped to and m_port is the port number where all the traffic has to be mapped to. For instance, let's say we want to map the port 119 on 10.0.0.1 to the port 119 on msnews.microsoft.com. You'd have to do something like this: >addlistener Please enter the full class name of the Listener object you're trying to add: (ie. Org.Mentalis.Proxy.Http.HttpListener) Org.Mentalis.Proxy.PortMap.PortMapListener Please enter the construction parameters: host:10.0.0.1;int:119;host:msnews.microsoft.com;int:119 PORTMAP service on 10.0.0.1:119 started. If you now connect to the IP address 10.0.0.1 with your favoutite news reader, you'll end up on msnews.microsoft.com.