SocketToMe

Fun with sockets in C#.

Features

Connect to a SOCKS proxy server
- SOCKS 4 and 4A: TCP CONNECT
- SOCKS 5: TCP CONNECT with optional username and password authentication
Connect to an HTTP server without WinHTTP (e.g. HttpClientHandler)
- Use the custom delegating handler NetworkHandler with HttpClient
- HTTP/1.1
- HTTPS
- Chunked requests and responses
- Most of the features provided by HttpClient
- Arbitrary sockets (e.g. connected to a SOCKS proxy server!)
- Automatic redirects (with RedirectingHandler)
- Automatic decompression (with DecompressingHandler)
- Cookies (with CookieHandler)
- HTTP CONNECT

There's probably a lot of bugs with NetworkHandler... it's not very thoroughly tested.

Install

Install-Package Knapcode.SocketToMe

Examples

HTTP

using (var httpClient = new HttpClient(new NetworkHandler()))
using (var response = await httpClient.GetAsync("http://icanhazip.com/"))
{
    Console.WriteLine("{0} {1}", (int) response.StatusCode, response.ReasonPhrase);
    Console.WriteLine((await response.Content.ReadAsStringAsync()).Trim());
}

SOCKS

Talk to a website through Tor! Have Tor Browser running at the same time to try this demo out. Port 9150 is the default port for Tor Browser.

var socksEndpoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), SocksPort);
var socks5Client = new Socks5Client();
var socket = socks5Client.ConnectToServer(socksEndpoint);
socket = socks5Client.ConnectToDestination(socket, "icanhazip.com", 80);

using (var proxiedStream = new NetworkStream(socket))
using (var writer = new StreamWriter(proxiedStream))
using (var reader = new StreamReader(proxiedStream))
{
    writer.WriteLine("GET / HTTP/1.1");
    writer.WriteLine("Host: icanhazip.com");
    writer.WriteLine();
    writer.Flush();

    Console.WriteLine((await reader.ReadToEndAsync()).Trim());
}

HTTPS and SOCKS

var socksEndpoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), SocksPort);
var socks5Client = new Socks5Client();
var socket = socks5Client.ConnectToServer(socksEndpoint);
socket = socks5Client.ConnectToDestination(socket, "icanhazip.com", 443);

using (var httpClient = new HttpClient(new NetworkHandler(socket)))
using (var response = await httpClient.GetAsync("https://icanhazip.com/"))
{
    Console.WriteLine("{0} {1}", (int)response.StatusCode, response.ReasonPhrase);
    Console.WriteLine((await response.Content.ReadAsStringAsync()).Trim());
}

HTTP CONNECT

var socket = Tcp.ConnectToServer("127.0.0.1", HttpConnectPort);
var httpSocketClient = new HttpSocketClient();

var connectRequest = new HttpRequestMessage(new HttpMethod("CONNECT"), "http://icanhazip.com/");
var connectStream = await httpSocketClient.GetStreamAsync(socket, connectRequest);
await httpSocketClient.SendRequestAsync(connectStream, connectRequest);
var receiveResponse = await httpSocketClient.ReceiveResponseAsync(connectStream, connectRequest);
Console.WriteLine("{0} {1}", (int)receiveResponse.StatusCode, receiveResponse.ReasonPhrase);

var getRequest = new HttpRequestMessage(HttpMethod.Get, "http://icanhazip.com/");
var getStream = await httpSocketClient.GetStreamAsync(socket, getRequest);
await httpSocketClient.SendRequestAsync(getStream, getRequest);
var getResponse = await httpSocketClient.ReceiveResponseAsync(getStream, getRequest);
Console.WriteLine("{0} {1}", (int)getResponse.StatusCode, getResponse.ReasonPhrase);
Console.WriteLine((await getResponse.Content.ReadAsStringAsync()).Trim());

TODO

SOCKS
- async support to Socks4Client and Socks5Client
HTTP
- Client certificates
- HTTP/1.0
- HTTP and HTTPS proxies
- Connection pools (Keep-Alive
- HTTP 2
Everywhere
- Better cancellation token support

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joelverhagen / SocketToMe

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