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/*
* Authors: Benton Stark
*
* Copyright (c) 2007-2009 Starksoft, LLC (http://www.starksoft.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
using System;
using System.Collections.Generic;
using System.Text;
using System.Net.Sockets;
namespace Starksoft.Net.Proxy
{
/// <summary>
/// The type of proxy.
/// </summary>
public enum ProxyType
{
/// <summary>
/// No Proxy specified. Note this option will cause an exception to be thrown if used to create a proxy object by the factory.
/// </summary>
None,
/// <summary>
/// HTTP Proxy
/// </summary>
Http,
/// <summary>
/// SOCKS v4 Proxy
/// </summary>
Socks4,
/// <summary>
/// SOCKS v4a Proxy
/// </summary>
Socks4a,
/// <summary>
/// SOCKS v5 Proxy
/// </summary>
Socks5
}
/// <summary>
/// Factory class for creating new proxy client objects.
/// </summary>
/// <remarks>
/// <code>
/// // create an instance of the client proxy factory
/// ProxyClientFactory factory = new ProxyClientFactory();
///
/// // use the proxy client factory to generically specify the type of proxy to create
/// // the proxy factory method CreateProxyClient returns an IProxyClient object
/// IProxyClient proxy = factory.CreateProxyClient(ProxyType.Http, "localhost", 6588);
///
/// // create a connection through the proxy to www.starksoft.com over port 80
/// System.Net.Sockets.TcpClient tcpClient = proxy.CreateConnection("www.starksoft.com", 80);
/// </code>
/// </remarks>
public class ProxyClientFactory
{
/// <summary>
/// Factory method for creating new proxy client objects.
/// </summary>
/// <param name="type">The type of proxy client to create.</param>
/// <returns>Proxy client object.</returns>
public IProxyClient CreateProxyClient(ProxyType type)
{
if (type == ProxyType.None)
throw new ArgumentOutOfRangeException("type");
switch (type)
{
case ProxyType.Http:
return new HttpProxyClient();
case ProxyType.Socks4:
return new Socks4ProxyClient();
case ProxyType.Socks4a:
return new Socks4aProxyClient();
case ProxyType.Socks5:
return new Socks5ProxyClient();
default:
throw new ProxyException(String.Format("Unknown proxy type {0}.", type.ToString()));
}
}
/// <summary>
/// Factory method for creating new proxy client objects using an existing TcpClient connection object.
/// </summary>
/// <param name="type">The type of proxy client to create.</param>
/// <param name="tcpClient">Open TcpClient object.</param>
/// <returns>Proxy client object.</returns>
public IProxyClient CreateProxyClient(ProxyType type, TcpClient tcpClient)
{
if (type == ProxyType.None)
throw new ArgumentOutOfRangeException("type");
switch (type)
{
case ProxyType.Http:
return new HttpProxyClient(tcpClient);
case ProxyType.Socks4:
return new Socks4ProxyClient(tcpClient);
case ProxyType.Socks4a:
return new Socks4aProxyClient(tcpClient);
case ProxyType.Socks5:
return new Socks5ProxyClient(tcpClient);
default:
throw new ProxyException(String.Format("Unknown proxy type {0}.", type.ToString()));
}
}
/// <summary>
/// Factory method for creating new proxy client objects.
/// </summary>
/// <param name="type">The type of proxy client to create.</param>
/// <param name="proxyHost">The proxy host or IP address.</param>
/// <param name="proxyPort">The proxy port number.</param>
/// <returns>Proxy client object.</returns>
public IProxyClient CreateProxyClient(ProxyType type, string proxyHost, int proxyPort)
{
if (type == ProxyType.None)
throw new ArgumentOutOfRangeException("type");
switch (type)
{
case ProxyType.Http:
return new HttpProxyClient(proxyHost, proxyPort);
case ProxyType.Socks4:
return new Socks4ProxyClient(proxyHost, proxyPort);
case ProxyType.Socks4a:
return new Socks4aProxyClient(proxyHost, proxyPort);
case ProxyType.Socks5:
return new Socks5ProxyClient(proxyHost, proxyPort);
default:
throw new ProxyException(String.Format("Unknown proxy type {0}.", type.ToString()));
}
}
/// <summary>
/// Factory method for creating new proxy client objects.
/// </summary>
/// <param name="type">The type of proxy client to create.</param>
/// <param name="proxyHost">The proxy host or IP address.</param>
/// <param name="proxyPort">The proxy port number.</param>
/// <param name="proxyUsername">The proxy username. This parameter is only used by Socks4 and Socks5 proxy objects.</param>
/// <param name="proxyPassword">The proxy user password. This parameter is only used Socks5 proxy objects.</param>
/// <returns>Proxy client object.</returns>
public IProxyClient CreateProxyClient(ProxyType type, string proxyHost, int proxyPort, string proxyUsername, string proxyPassword)
{
if (type == ProxyType.None)
throw new ArgumentOutOfRangeException("type");
switch (type)
{
case ProxyType.Http:
return new HttpProxyClient(proxyHost, proxyPort);
case ProxyType.Socks4:
return new Socks4ProxyClient(proxyHost, proxyPort, proxyUsername);
case ProxyType.Socks4a:
return new Socks4aProxyClient(proxyHost, proxyPort, proxyUsername);
case ProxyType.Socks5:
return new Socks5ProxyClient(proxyHost, proxyPort, proxyUsername, proxyPassword);
default:
throw new ProxyException(String.Format("Unknown proxy type {0}.", type.ToString()));
}
}
/// <summary>
/// Factory method for creating new proxy client objects.
/// </summary>
/// <param name="type">The type of proxy client to create.</param>
/// <param name="tcpClient">Open TcpClient object.</param>
/// <param name="proxyHost">The proxy host or IP address.</param>
/// <param name="proxyPort">The proxy port number.</param>
/// <param name="proxyUsername">The proxy username. This parameter is only used by Socks4 and Socks5 proxy objects.</param>
/// <param name="proxyPassword">The proxy user password. This parameter is only used Socks5 proxy objects.</param>
/// <returns>Proxy client object.</returns>
public IProxyClient CreateProxyClient(ProxyType type, TcpClient tcpClient, string proxyHost, int proxyPort, string proxyUsername, string proxyPassword)
{
IProxyClient c = CreateProxyClient(type, proxyHost, proxyPort, proxyUsername, proxyPassword);
c.TcpClient = tcpClient;
return c;
}
}
}
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