private static void PerformTunnelHandshake(HttpSocket httpSocket, Proxy proxy, string hostAddress, int port, BrowserConfig browserCfg)
{
StringStringKeyValuePairContainer headersContainer = new StringStringKeyValuePairContainer();
headersContainer.Put(HeaderKeys.Host, hostAddress + ":" + port);
headersContainer.Put(HeaderKeys.UserAgent, browserCfg.UserAgent);
headersContainer.Put(HeaderKeys.Connection, HeaderValues.ConnectionKeepAlive);
if (proxy != null && proxy.HasAuthentication)
{
headersContainer.Put(HeaderKeys.ProxyConnection, HeaderValues.ConnectionKeepAlive);
headersContainer.Put(HeaderKeys.ProxyAuthorization, "Basic " + proxy.ProxyCreds.GetBase64Auth());
}
httpSocket.WriteLine(RequestType.Connect.Notation + " " + hostAddress + ":" + port + " " + browserCfg.HttpVersion.Notation);
foreach (StringStringKeyValuePair kvp in headersContainer.Kvps)
{
httpSocket.WriteLine(kvp.Key + ": " + kvp.Value);
}
httpSocket.WriteLine();
httpSocket.FlushUnderlying();
HttpHeaderDecoder hd = new HttpHeaderDecoder();
hd.Decode(httpSocket.Stream);
if (hd.ResponseStatus.HttpCode != HttpCode.Ok)
{
throw new IOException("Unable to tunnel through proxy => " + hd.ResponseStatus);
}
logger.Debug("Successfully tunneled through proxy");
}
private static HttpSocket InsecureConnect(Proxy proxy, string hostAddress, int port, BrowserConfig browserCfg)
{
logger.Debug(string.Format("Connecting socket ({0}:{1}, proxy => {2})", hostAddress, port, proxy != null));
Socket socket = proxy is null
? ConnectToServerHost(hostAddress, port, browserCfg)
: ConnectToProxyHost(proxy, browserCfg);
if (socket is null || !socket.Connected)
{
return(null);
}
HttpSocket httpSocket = new HttpSocket(socket, browserCfg.ReadTimeout * 1000, browserCfg.WriteTimeout * 1000);
if (proxy != null && proxy.HasAuthentication)
{
PerformTunnelHandshake(httpSocket, proxy, hostAddress, port, browserCfg);
}
logger.Debug(string.Format("Successfully connected socket ({0}:{1}, proxy => {2})", hostAddress, port, proxy != null));
return(httpSocket);
}
private static HttpSocket SecureConnect(Proxy proxy, string hostAddress, int port, BrowserConfig browserCfg)
{
logger.Debug(string.Format("Connecting SSL socket ({0}:{1}, proxy => {2})", hostAddress, port, proxy != null));
Socket socket = proxy is null
? ConnectToServerHost(hostAddress, port == 80? 443 : port, browserCfg)
: ConnectToProxyHost(proxy, browserCfg);
if (socket is null || !socket.Connected)
{
return(null);
}
HttpSocket httpSocket = new HttpSocket(socket, browserCfg.ReadTimeout * 1000, browserCfg.WriteTimeout * 1000);
if (proxy != null)
{
PerformTunnelHandshake(httpSocket, proxy, hostAddress, 443, browserCfg);
}
httpSocket.OpenSslStream();
try {
httpSocket.SslStream.AuthenticateAsClient(hostAddress);
} catch (IOException ex) {
Console.WriteLine(ex.ToString());
}
if (!httpSocket.SslStream.IsAuthenticated)
{
Console.WriteLine("not authenticated");
return(null);
}
logger.Debug(string.Format("Successfully connected SSL socket ({0}:{1}, proxy => {2})", hostAddress, port, proxy != null));
if (!SslHosts.Contains(hostAddress))
{
SslHosts.Add(hostAddress);
}
return(httpSocket);
}
