private void Close()
{
KeepAlive = null;
LastProcessedUri = null;
if (Client != null)
{
try
{
Client.Close();
}
catch
{
}
finally
{
Stream = null;
Client = null;
}
}
}
private void Connect()
{
Uri uri =
#if !BESTHTTP_DISABLE_PROXY
CurrentRequest.HasProxy ? CurrentRequest.Proxy.Address :
#endif
CurrentRequest.CurrentUri;
#region TCP Connection
if (Client == null)
{
Client = new TcpClient();
}
if (!Client.Connected)
{
Client.ConnectTimeout = CurrentRequest.ConnectTimeout;
#if NETFX_CORE || (UNITY_WP8 && !UNITY_EDITOR)
Client.UseHTTPSProtocol =
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
!CurrentRequest.UseAlternateSSL &&
#endif
HTTPProtocolFactory.IsSecureProtocol(uri);
#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);
#if !BESTHTTP_DISABLE_PROXY
#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
#endif // #if !BESTHTTP_DISABLE_PROXY
// We have to use CurrentRequest.CurrentUri here, becouse uri can be a proxy uri with a different protocol
if (isSecure)
{
#region SSL Upgrade
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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,
CurrentRequest.CustomClientCredentialsProvider,
hostNames));
Stream = handler.Stream;
}
else
#endif
{
#if !NETFX_CORE && !UNITY_WP8
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();
}
}
}
private void Connect()
{
Uri uri =
#if !BESTHTTP_DISABLE_PROXY
CurrentRequest.HasProxy ? CurrentRequest.Proxy.Address :
#endif
CurrentRequest.CurrentUri;
#region TCP Connection
if (Client == null)
{
Client = new TcpClient();
}
if (!Client.Connected)
{
Client.ConnectTimeout = CurrentRequest.ConnectTimeout;
if (HTTPManager.Logger.Level == Logger.Loglevels.All)
{
HTTPManager.Logger.Verbose("HTTPConnection", string.Format("'{0}' - Connecting to {1}:{2}", this.CurrentRequest.CurrentUri.ToString(), uri.Host, uri.Port.ToString()));
}
#if !NETFX_CORE && (!UNITY_WEBGL || UNITY_EDITOR)
Client.SendBufferSize = HTTPManager.SendBufferSize;
Client.ReceiveBufferSize = HTTPManager.ReceiveBufferSize;
if (HTTPManager.Logger.Level == Logger.Loglevels.All)
{
HTTPManager.Logger.Verbose("HTTPConnection", string.Format("'{0}' - Buffer sizes - Send: {1} Receive: {2} Blocking: {3}", this.CurrentRequest.CurrentUri.ToString(), Client.SendBufferSize.ToString(), Client.ReceiveBufferSize.ToString(), Client.Client.Blocking.ToString()));
}
#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
StartTime = DateTime.UtcNow;
if (Stream == null)
{
bool isSecure = HTTPProtocolFactory.IsSecureProtocol(CurrentRequest.CurrentUri);
Stream = Client.GetStream();
/*if (Stream.CanTimeout)
* Stream.ReadTimeout = Stream.WriteTimeout = (int)CurrentRequest.Timeout.TotalMilliseconds;*/
#if !BESTHTTP_DISABLE_PROXY
if (CurrentRequest.Proxy != null)
{
CurrentRequest.Proxy.Connect(this.Stream, this.CurrentRequest);
}
#endif
// We have to use CurrentRequest.CurrentUri here, because uri can be a proxy uri with a different protocol
if (isSecure)
{
// Under the new experimental runtime there's a bug in the Socket.Send implementation that can cause a
// connection when the TLS protocol is used.
#if !NETFX_CORE && (!UNITY_WEBGL || UNITY_EDITOR) && NET_4_6
//Client.SendBufferSize = 0;
#endif
#region SSL Upgrade
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
if (CurrentRequest.UseAlternateSSL)
{
var handler = new TlsClientProtocol(Client.GetStream(), new BestHTTP.SecureProtocol.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.
// -Literal IPv4 and IPv6 addresses are not permitted in "HostName".
// User-defined list has a higher priority
List <string> hostNames = CurrentRequest.CustomTLSServerNameList;
// If there's no user defined one and the host isn't an IP address, add the default one
if ((hostNames == null || hostNames.Count == 0) && !CurrentRequest.CurrentUri.IsHostIsAnIPAddress())
{
hostNames = new List <string>(1);
hostNames.Add(CurrentRequest.CurrentUri.Host);
}
handler.Connect(new LegacyTlsClient(CurrentRequest.CurrentUri,
CurrentRequest.CustomCertificateVerifyer == null ? new AlwaysValidVerifyer() : CurrentRequest.CustomCertificateVerifyer,
CurrentRequest.CustomClientCredentialsProvider,
hostNames));
Stream = handler.Stream;
}
else
#endif
{
#if !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
}
}
}
public void Connect(HTTPRequest request)
{
string negotiatedProtocol = HTTPProtocolFactory.W3C_HTTP1;
Uri uri =
#if !BESTHTTP_DISABLE_PROXY
request.HasProxy ? request.Proxy.Address :
#endif
request.CurrentUri;
#region TCP Connection
if (Client == null)
{
Client = new TcpClient();
}
if (!Client.Connected)
{
Client.ConnectTimeout = request.ConnectTimeout;
#if NETFX_CORE
Client.UseHTTPSProtocol =
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
!Request.UseAlternateSSL &&
#endif
HTTPProtocolFactory.IsSecureProtocol(uri);
#endif
if (HTTPManager.Logger.Level == Logger.Loglevels.All)
{
HTTPManager.Logger.Verbose("TCPConnector", string.Format("'{0}' - Connecting to {1}:{2}", request.CurrentUri.ToString(), uri.Host, uri.Port.ToString()), request.Context);
}
#if !NETFX_CORE && (!UNITY_WEBGL || UNITY_EDITOR)
Client.SendBufferSize = HTTPManager.SendBufferSize;
Client.ReceiveBufferSize = HTTPManager.ReceiveBufferSize;
if (HTTPManager.Logger.Level == Logger.Loglevels.All)
{
HTTPManager.Logger.Verbose("TCPConnector", string.Format("'{0}' - Buffer sizes - Send: {1} Receive: {2} Blocking: {3}", request.CurrentUri.ToString(), Client.SendBufferSize.ToString(), Client.ReceiveBufferSize.ToString(), Client.Client.Blocking.ToString()), request.Context);
}
#endif
#if NETFX_CORE && !UNITY_EDITOR && !ENABLE_IL2CPP
try
{
Client.Connect(uri.Host, uri.Port);
}
finally
{
request.Timing.Add(TimingEventNames.TCP_Connection);
}
#else
System.Net.IPAddress[] addresses = null;
try
{
if (Client.ConnectTimeout > TimeSpan.Zero)
{
// https://forum.unity3d.com/threads/best-http-released.200006/page-37#post-3150972
using (System.Threading.ManualResetEvent mre = new System.Threading.ManualResetEvent(false))
{
IAsyncResult result = System.Net.Dns.BeginGetHostAddresses(uri.Host, (res) => { try { mre.Set(); } catch { } }, null);
bool success = mre.WaitOne(Client.ConnectTimeout);
if (success)
{
addresses = System.Net.Dns.EndGetHostAddresses(result);
}
else
{
throw new TimeoutException("DNS resolve timed out!");
}
}
}
else
{
addresses = System.Net.Dns.GetHostAddresses(uri.Host);
}
}
finally
{
request.Timing.Add(TimingEventNames.DNS_Lookup);
}
if (HTTPManager.Logger.Level == Logger.Loglevels.All)
{
HTTPManager.Logger.Verbose("TCPConnector", string.Format("'{0}' - DNS Query returned with addresses: {1}", request.CurrentUri.ToString(), addresses != null ? addresses.Length : -1), request.Context);
}
if (request.IsCancellationRequested)
{
throw new Exception("IsCancellationRequested");
}
try
{
Client.Connect(addresses, uri.Port, request);
}
finally
{
request.Timing.Add(TimingEventNames.TCP_Connection);
}
if (request.IsCancellationRequested)
{
throw new Exception("IsCancellationRequested");
}
#endif
if (HTTPManager.Logger.Level <= Logger.Loglevels.Information)
{
HTTPManager.Logger.Information("TCPConnector", "Connected to " + uri.Host + ":" + uri.Port.ToString(), request.Context);
}
}
else if (HTTPManager.Logger.Level <= Logger.Loglevels.Information)
{
HTTPManager.Logger.Information("TCPConnector", "Already connected to " + uri.Host + ":" + uri.Port.ToString(), request.Context);
}
#endregion
if (Stream == null)
{
bool isSecure = HTTPProtocolFactory.IsSecureProtocol(request.CurrentUri);
// set the stream to Client.GetStream() so the proxy, if there's any can use it directly.
this.Stream = this.TopmostStream = Client.GetStream();
/*if (Stream.CanTimeout)
* Stream.ReadTimeout = Stream.WriteTimeout = (int)Request.Timeout.TotalMilliseconds;*/
#if !BESTHTTP_DISABLE_PROXY
if (request.HasProxy)
{
try
{
request.Proxy.Connect(this.Stream, request);
}
finally
{
request.Timing.Add(TimingEventNames.Proxy_Negotiation);
}
}
if (request.IsCancellationRequested)
{
throw new Exception("IsCancellationRequested");
}
#endif
// proxy connect is done, we can set the stream to a buffered one. HTTPProxy requires the raw NetworkStream for HTTPResponse's ReadUnknownSize!
this.Stream = this.TopmostStream = new BufferedReadNetworkStream(Client.GetStream(), Math.Max(8 * 1024, HTTPManager.ReceiveBufferSize));
// We have to use Request.CurrentUri here, because uri can be a proxy uri with a different protocol
if (isSecure)
{
DateTime tlsNegotiationStartedAt = DateTime.Now;
#region SSL Upgrade
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
if (request.UseAlternateSSL)
{
var handler = new TlsClientProtocol(this.Stream, new BestHTTP.SecureProtocol.Org.BouncyCastle.Security.SecureRandom());
List <string> protocols = new List <string>();
#if !BESTHTTP_DISABLE_HTTP2
SupportedProtocols protocol = request.ProtocolHandler == SupportedProtocols.Unknown ? HTTPProtocolFactory.GetProtocolFromUri(request.CurrentUri) : request.ProtocolHandler;
if (protocol == SupportedProtocols.HTTP)
{
// http/2 over tls (https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml#alpn-protocol-ids)
protocols.Add(HTTPProtocolFactory.W3C_HTTP2);
}
#endif
protocols.Add(HTTPProtocolFactory.W3C_HTTP1);
AbstractTlsClient tlsClient = null;
if (HTTPManager.TlsClientFactory == null)
{
tlsClient = HTTPManager.DefaultTlsClientFactory(request, protocols);
}
else
{
try
{
tlsClient = HTTPManager.TlsClientFactory(request, protocols);
}
catch
{ }
if (tlsClient == null)
{
tlsClient = HTTPManager.DefaultTlsClientFactory(request, protocols);
}
}
tlsClient.LoggingContext = request.Context;
handler.Connect(tlsClient);
if (!string.IsNullOrEmpty(tlsClient.ServerSupportedProtocol))
{
negotiatedProtocol = tlsClient.ServerSupportedProtocol;
}
Stream = handler.Stream;
}
else
#endif
{
#if !NETFX_CORE
SslStream sslStream = new SslStream(Client.GetStream(), false, (sender, cert, chain, errors) =>
{
return(request.CallCustomCertificationValidator(cert, chain));
});
if (!sslStream.IsAuthenticated)
{
sslStream.AuthenticateAsClient(request.CurrentUri.Host);
}
Stream = sslStream;
#else
Stream = Client.GetStream();
#endif
}
#endregion
request.Timing.Add(TimingEventNames.TLS_Negotiation, DateTime.Now - tlsNegotiationStartedAt);
}
}
this.NegotiatedProtocol = negotiatedProtocol;
}
public void Connect(HTTPRequest request)
{
string negotiatedProtocol = HTTPProtocolFactory.W3C_HTTP1;
Uri uri =
#if !BESTHTTP_DISABLE_PROXY
request.HasProxy ? request.Proxy.Address :
#endif
request.CurrentUri;
#region TCP Connection
if (Client == null)
{
Client = new TcpClient();
}
if (!Client.Connected)
{
Client.ConnectTimeout = request.ConnectTimeout;
#if NETFX_CORE
Client.UseHTTPSProtocol =
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
!Request.UseAlternateSSL &&
#endif
HTTPProtocolFactory.IsSecureProtocol(uri);
#endif
if (HTTPManager.Logger.Level == Logger.Loglevels.All)
{
HTTPManager.Logger.Verbose("TCPConnector", string.Format("'{0}' - Connecting to {1}:{2}", request.CurrentUri.ToString(), uri.Host, uri.Port.ToString()));
}
#if !NETFX_CORE && (!UNITY_WEBGL || UNITY_EDITOR)
Client.SendBufferSize = HTTPManager.SendBufferSize;
Client.ReceiveBufferSize = HTTPManager.ReceiveBufferSize;
if (HTTPManager.Logger.Level == Logger.Loglevels.All)
{
HTTPManager.Logger.Verbose("TCPConnector", string.Format("'{0}' - Buffer sizes - Send: {1} Receive: {2} Blocking: {3}", request.CurrentUri.ToString(), Client.SendBufferSize.ToString(), Client.ReceiveBufferSize.ToString(), Client.Client.Blocking.ToString()));
}
#endif
Client.Connect(uri.Host, uri.Port);
if (HTTPManager.Logger.Level <= Logger.Loglevels.Information)
{
HTTPManager.Logger.Information("TCPConnector", "Connected to " + uri.Host + ":" + uri.Port.ToString());
}
}
else if (HTTPManager.Logger.Level <= Logger.Loglevels.Information)
{
HTTPManager.Logger.Information("TCPConnector", "Already connected to " + uri.Host + ":" + uri.Port.ToString());
}
#endregion
if (Stream == null)
{
bool isSecure = HTTPProtocolFactory.IsSecureProtocol(request.CurrentUri);
this.Stream = this.TopmostStream = Client.GetStream();
/*if (Stream.CanTimeout)
* Stream.ReadTimeout = Stream.WriteTimeout = (int)Request.Timeout.TotalMilliseconds;*/
#if !BESTHTTP_DISABLE_PROXY
if (request.Proxy != null)
{
request.Proxy.Connect(this.Stream, request);
}
#endif
// We have to use Request.CurrentUri here, because uri can be a proxy uri with a different protocol
if (isSecure)
{
#region SSL Upgrade
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
if (request.UseAlternateSSL)
{
var handler = new TlsClientProtocol(Client.GetStream(), new BestHTTP.SecureProtocol.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.
// -Literal IPv4 and IPv6 addresses are not permitted in "HostName".
// User-defined list has a higher priority
List <string> hostNames = request.CustomTLSServerNameList;
// If there's no user defined one and the host isn't an IP address, add the default one
if ((hostNames == null || hostNames.Count == 0) && !request.CurrentUri.IsHostIsAnIPAddress())
{
hostNames = new List <string>(1);
hostNames.Add(request.CurrentUri.Host);
}
List <string> protocols = new List <string>();
#if !BESTHTTP_DISABLE_HTTP2
SupportedProtocols protocol = request.ProtocolHandler == SupportedProtocols.Unknown ? HTTPProtocolFactory.GetProtocolFromUri(request.CurrentUri) : request.ProtocolHandler;
if (protocol == SupportedProtocols.HTTP)
{
// http/2 over tls (https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml#alpn-protocol-ids)
protocols.Add(HTTPProtocolFactory.W3C_HTTP2);
}
#endif
protocols.Add(HTTPProtocolFactory.W3C_HTTP1);
var tlsClient = new LegacyTlsClient(request.CurrentUri,
request.CustomCertificateVerifyer == null ? new AlwaysValidVerifyer() : request.CustomCertificateVerifyer,
request.CustomClientCredentialsProvider,
hostNames,
protocols);
handler.Connect(tlsClient);
if (!string.IsNullOrEmpty(tlsClient.ServerSupportedProtocol))
{
negotiatedProtocol = tlsClient.ServerSupportedProtocol;
}
Stream = handler.Stream;
}
else
#endif
{
#if !NETFX_CORE
SslStream sslStream = new SslStream(Client.GetStream(), false, (sender, cert, chain, errors) =>
{
return(request.CallCustomCertificationValidator(cert, chain));
});
if (!sslStream.IsAuthenticated)
{
sslStream.AuthenticateAsClient(request.CurrentUri.Host);
}
Stream = sslStream;
#else
Stream = Client.GetStream();
#endif
}
#endregion
}
}
this.NegotiatedProtocol = negotiatedProtocol;
}
private void Close()
{
LastProcessedUri = null;
if (Client != null)
{
try
{
Client.Close();
}
catch
{
}
finally
{
Stream = null;
Client = null;
}
}
}
private void Connect()
{
Uri uri =
#if !BESTHTTP_DISABLE_PROXY
CurrentRequest.HasProxy ? CurrentRequest.Proxy.Address :
#endif
CurrentRequest.CurrentUri;
#region TCP Connection
if (Client == null)
Client = new TcpClient();
if (!Client.Connected)
{
Client.ConnectTimeout = CurrentRequest.ConnectTimeout;
#if NETFX_CORE || (UNITY_WP8 && !UNITY_EDITOR)
Client.UseHTTPSProtocol =
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
!CurrentRequest.UseAlternateSSL &&
#endif
HTTPProtocolFactory.IsSecureProtocol(uri);
#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);
#if !BESTHTTP_DISABLE_PROXY
#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
#endif // #if !BESTHTTP_DISABLE_PROXY
// We have to use CurrentRequest.CurrentUri here, becouse uri can be a proxy uri with a different protocol
if (isSecure)
{
#region SSL Upgrade
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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,
CurrentRequest.CustomClientCredentialsProvider,
hostNames));
Stream = handler.Stream;
}
else
#endif
{
#if !NETFX_CORE && !UNITY_WP8
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();
}
}