Connect()
{
Uri uri = CurrentRequest.HasProxy ? CurrentRequest.Proxy.Address : CurrentRequest.CurrentUri;
if (Client == null)
Client = new TcpClient();
if (!Client.Connected)
{
Client.ConnectTimeout = CurrentRequest.ConnectTimeout;
//#if NETFX_CORE
//await
//#endif
string address = HTTPManager.GetHostCache (uri.Host);
if (!string.IsNullOrEmpty (address)) {
Client.Connect (address, uri.Port);
} else {
Client.Connect (uri.Host, uri.Port);
if (Client.IsConnected()) {
System.Net.IPEndPoint end_point = Client.Client.RemoteEndPoint as System.Net.IPEndPoint;
address = end_point.Address.ToString ();
HTTPManager.AddHostCache (uri.Host, address);
}
}
} else {
// NGUIDebug.print("Client.Connected ========>" + Client.Connected);
}
if (Stream == null)
{
if (HasProxy && !Proxy.IsTransparent)
{
Stream = Client.GetStream();
var outStream = new BinaryWriter(Stream);
outStream.Write(string.Format("CONNECT {0}:{1} HTTP/1.1", CurrentRequest.CurrentUri.Host, CurrentRequest.CurrentUri.Port).GetASCIIBytes());
outStream.Write(HTTPRequest.EOL);
outStream.Write(string.Format("Host: {0}:{1}", CurrentRequest.CurrentUri.Host, CurrentRequest.CurrentUri.Port).GetASCIIBytes());
outStream.Write(HTTPRequest.EOL);
outStream.Write(string.Format("Proxy-Connection: Keep-Alive"));
outStream.Write(HTTPRequest.EOL);
outStream.Write(HTTPRequest.EOL);
outStream.Flush();
ReadTo(Stream, HTTPResponse.LF);
ReadTo(Stream, HTTPResponse.LF);
}
if (HTTPProtocolFactory.IsSecureProtocol(uri))
{
// On WP8 there are no Mono, so we must use the 'alternate' TlsHandlers
#if !UNITY_WP8 && !NETFX_CORE
if (CurrentRequest.UseAlternateSSL)
{
#endif
var handler = new TlsClientProtocol(Client.GetStream(), new Org.BouncyCastle.Security.SecureRandom());
handler.Connect(new LegacyTlsClient(new AlwaysValidVerifyer()));
Stream = handler.Stream;
#if !UNITY_WP8 && !NETFX_CORE
}
else
{
SslStream sslStream = new SslStream(Client.GetStream(), false, (sender, cert, chain, errors) =>
{
return CurrentRequest.CallCustomCertificationValidator(cert, chain);
});
if (!sslStream.IsAuthenticated)
sslStream.AuthenticateAsClient(uri.Host);
Stream = sslStream;
}
#endif
}
else
Stream = Client.GetStream();
}
}
public void Connect(Uri address)
{
IPAddress ip;
if (address.HostNameType == UriHostNameType.Dns)
ip = LookupDNS(address.Host);
else
ip = IPAddress.Parse(address.Host);
if (ip == null)
throw new HttpFetchException("No DNS for " + address.Host);
//TODO: loop for all dns ips on connect failures
var tcp = new TcpClient();
var result = tcp.BeginConnect(ip, address.Port, null, null);
if (!result.AsyncWaitHandle.WaitOne(ConnectTimeout, true))
{
tcp.Close();
throw new HttpFetchException("Timeout connecting to " + ip);
}
tcp.EndConnect(result);
socket = tcp.Client;
stream = tcp.GetStream();
if (address.Scheme == "https")
{
//Broken in mono with newer ciphers
/*
var ssl = new SslStream(stream, false, VerifyCert);
ssl.AuthenticateAsClient(address.Host);
stream = ssl;*/
var handler = new TlsClientProtocol(stream, new SecureRandom());
handler.Connect(new MyTlsClient(address.Host));
stream = handler.Stream;
}
reader = new StreamLineReader(stream);
Console.WriteLine("Connected to " + socket.RemoteEndPoint + "(" + address.Host + ")");
}
private void Connect()
{
Uri uri = CurrentRequest.HasProxy ? CurrentRequest.Proxy.Address : CurrentRequest.CurrentUri;
#region TCP Connection
if (Client == null)
Client = new TcpClient();
if (!Client.Connected)
{
Client.ConnectTimeout = CurrentRequest.ConnectTimeout;
#if NETFX_CORE
Client.UseHTTPSProtocol = !CurrentRequest.UseAlternateSSL && HTTPProtocolFactory.IsSecureProtocol(uri);
// On WinRT and >WP8 we use the more secure Tls12 protocol, but on WP8 only Ssl is available...
#if UNITY_WP_8_1 || UNITY_METRO_8_1 || UNITY_METRO
Client.HTTPSProtocol = (int)SocketProtectionLevel.Tls12;
#else
Client.HTTPSProtocol = (int)SocketProtectionLevel.Ssl;
#endif
#endif
Client.Connect(uri.Host, uri.Port);
if (HTTPManager.Logger.Level <= Logger.Loglevels.Information)
HTTPManager.Logger.Information("HTTPConnection", "Connected to " + uri.Host + ":" + uri.Port.ToString());
}
else if (HTTPManager.Logger.Level <= Logger.Loglevels.Information)
HTTPManager.Logger.Information("HTTPConnection", "Already connected to " + uri.Host + ":" + uri.Port.ToString());
#endregion
lock (HTTPManager.Locker)
StartTime = DateTime.UtcNow;
if (Stream == null)
{
bool isSecure = HTTPProtocolFactory.IsSecureProtocol(CurrentRequest.CurrentUri);
#region Proxy Handling
if (HasProxy && (!Proxy.IsTransparent || (isSecure && Proxy.NonTransparentForHTTPS)))
{
Stream = Client.GetStream();
var outStream = new BinaryWriter(Stream);
bool retry;
do
{
// If we have to becouse of a authentication request, we will switch it to true
retry = false;
outStream.SendAsASCII(string.Format("CONNECT {0}:{1} HTTP/1.1", CurrentRequest.CurrentUri.Host, CurrentRequest.CurrentUri.Port));
outStream.Write(HTTPRequest.EOL);
outStream.SendAsASCII("Proxy-Connection: Keep-Alive");
outStream.Write(HTTPRequest.EOL);
outStream.SendAsASCII("Connection: Keep-Alive");
outStream.Write(HTTPRequest.EOL);
outStream.SendAsASCII(string.Format("Host: {0}:{1}", CurrentRequest.CurrentUri.Host, CurrentRequest.CurrentUri.Port));
outStream.Write(HTTPRequest.EOL);
// Proxy Authentication
if (HasProxy && Proxy.Credentials != null)
{
switch (Proxy.Credentials.Type)
{
case AuthenticationTypes.Basic:
// With Basic authentication we don't want to wait for a challange, we will send the hash with the first request
outStream.Write(string.Format("Proxy-Authorization: {0}", string.Concat("Basic ", Convert.ToBase64String(Encoding.UTF8.GetBytes(Proxy.Credentials.UserName + ":" + Proxy.Credentials.Password)))).GetASCIIBytes());
outStream.Write(HTTPRequest.EOL);
break;
case AuthenticationTypes.Unknown:
case AuthenticationTypes.Digest:
var digest = DigestStore.Get(Proxy.Address);
if (digest != null)
{
string authentication = digest.GenerateResponseHeader(CurrentRequest, Proxy.Credentials);
if (!string.IsNullOrEmpty(authentication))
{
outStream.Write(string.Format("Proxy-Authorization: {0}", authentication).GetASCIIBytes());
outStream.Write(HTTPRequest.EOL);
}
}
break;
}
}
outStream.Write(HTTPRequest.EOL);
// Make sure to send all the wrote data to the wire
outStream.Flush();
CurrentRequest.ProxyResponse = new HTTPResponse(CurrentRequest, Stream, false, false);
// Read back the response of the proxy
if (!CurrentRequest.ProxyResponse.Receive(-1, true))
throw new Exception("Connection to the Proxy Server failed!");
if (HTTPManager.Logger.Level <= Logger.Loglevels.Information)
HTTPManager.Logger.Information("HTTPConnection", "Proxy returned - status code: " + CurrentRequest.ProxyResponse.StatusCode + " message: " + CurrentRequest.ProxyResponse.Message);
switch(CurrentRequest.ProxyResponse.StatusCode)
{
// Proxy authentication required
// http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.8
case 407:
{
string authHeader = DigestStore.FindBest(CurrentRequest.ProxyResponse.GetHeaderValues("proxy-authenticate"));
if (!string.IsNullOrEmpty(authHeader))
{
var digest = DigestStore.GetOrCreate(Proxy.Address);
digest.ParseChallange(authHeader);
if (Proxy.Credentials != null && digest.IsUriProtected(Proxy.Address) && (!CurrentRequest.HasHeader("Proxy-Authorization") || digest.Stale))
retry = true;
}
break;
}
default:
if (!CurrentRequest.ProxyResponse.IsSuccess)
throw new Exception(string.Format("Proxy returned Status Code: \"{0}\", Message: \"{1}\" and Response: {2}", CurrentRequest.ProxyResponse.StatusCode, CurrentRequest.ProxyResponse.Message, CurrentRequest.ProxyResponse.DataAsText));
break;
}
} while (retry);
}
#endregion
// We have to use CurrentRequest.CurrentUri here, becouse uri can be a proxy uri with a different protocol
if (isSecure)
{
#region SSL Upgrade
// On WP8 there are no Mono, so we must use the 'alternate' TlsHandlers
if (CurrentRequest.UseAlternateSSL)
{
var handler = new TlsClientProtocol(Client.GetStream(), new Org.BouncyCastle.Security.SecureRandom());
// http://tools.ietf.org/html/rfc3546#section-3.1
// It is RECOMMENDED that clients include an extension of type "server_name" in the client hello whenever they locate a server by a supported name type.
List<string> hostNames = new List<string>(1);
hostNames.Add(CurrentRequest.CurrentUri.Host);
handler.Connect(new LegacyTlsClient(CurrentRequest.CurrentUri,
CurrentRequest.CustomCertificateVerifyer == null ? new AlwaysValidVerifyer() : CurrentRequest.CustomCertificateVerifyer,
null,
hostNames));
Stream = handler.Stream;
}
else
{
#if !UNITY_WP8 && !NETFX_CORE
SslStream sslStream = new SslStream(Client.GetStream(), false, (sender, cert, chain, errors) =>
{
return CurrentRequest.CallCustomCertificationValidator(cert, chain);
});
if (!sslStream.IsAuthenticated)
sslStream.AuthenticateAsClient(CurrentRequest.CurrentUri.Host);
Stream = sslStream;
#else
Stream = Client.GetStream();
#endif
}
#endregion
}
else
Stream = Client.GetStream();
}
}
