private bool Receive()
{
SupportedProtocols protocol = (base.CurrentRequest.ProtocolHandler != 0) ? base.CurrentRequest.ProtocolHandler : HTTPProtocolFactory.GetProtocolFromUri(base.CurrentRequest.CurrentUri);
base.CurrentRequest.Response = HTTPProtocolFactory.Get(protocol, base.CurrentRequest, Stream, base.CurrentRequest.UseStreaming, isFromCache: false);
if (!base.CurrentRequest.Response.Receive())
{
base.CurrentRequest.Response = null;
return(false);
}
if (base.CurrentRequest.Response.StatusCode == 304)
{
if (base.CurrentRequest.IsRedirected)
{
if (!LoadFromCache(base.CurrentRequest.RedirectUri))
{
LoadFromCache(base.CurrentRequest.Uri);
}
}
else
{
LoadFromCache(base.CurrentRequest.Uri);
}
}
return(true);
}
private void Connect()
{
Uri uri = (!base.CurrentRequest.HasProxy) ? base.CurrentRequest.CurrentUri : base.CurrentRequest.Proxy.Address;
if (Client == null)
{
Client = new TcpClient();
}
if (!Client.Connected)
{
Client.ConnectTimeout = base.CurrentRequest.ConnectTimeout;
Client.Connect(uri.Host, uri.Port);
if (HTTPManager.Logger.Level <= Loglevels.Information)
{
HTTPManager.Logger.Information("HTTPConnection", "Connected to " + uri.Host + ":" + uri.Port.ToString());
}
}
else if (HTTPManager.Logger.Level <= Loglevels.Information)
{
HTTPManager.Logger.Information("HTTPConnection", "Already connected to " + uri.Host + ":" + uri.Port.ToString());
}
lock (HTTPManager.Locker)
{
base.StartTime = DateTime.UtcNow;
}
if (Stream == null)
{
bool flag = HTTPProtocolFactory.IsSecureProtocol(base.CurrentRequest.CurrentUri);
if (base.HasProxy && (!base.Proxy.IsTransparent || (flag && base.Proxy.NonTransparentForHTTPS)))
{
Stream = Client.GetStream();
BinaryWriter binaryWriter = new BinaryWriter(Stream);
bool flag2;
do
{
flag2 = false;
binaryWriter.SendAsASCII($"CONNECT {base.CurrentRequest.CurrentUri.Host}:{base.CurrentRequest.CurrentUri.Port} HTTP/1.1");
binaryWriter.Write(HTTPRequest.EOL);
binaryWriter.SendAsASCII("Proxy-Connection: Keep-Alive");
binaryWriter.Write(HTTPRequest.EOL);
binaryWriter.SendAsASCII("Connection: Keep-Alive");
binaryWriter.Write(HTTPRequest.EOL);
binaryWriter.SendAsASCII($"Host: {base.CurrentRequest.CurrentUri.Host}:{base.CurrentRequest.CurrentUri.Port}");
binaryWriter.Write(HTTPRequest.EOL);
if (base.HasProxy && base.Proxy.Credentials != null)
{
switch (base.Proxy.Credentials.Type)
{
case AuthenticationTypes.Basic:
binaryWriter.Write(string.Format("Proxy-Authorization: {0}", "Basic " + Convert.ToBase64String(Encoding.UTF8.GetBytes(base.Proxy.Credentials.UserName + ":" + base.Proxy.Credentials.Password))).GetASCIIBytes());
binaryWriter.Write(HTTPRequest.EOL);
break;
case AuthenticationTypes.Unknown:
case AuthenticationTypes.Digest:
{
Digest digest = DigestStore.Get(base.Proxy.Address);
if (digest != null)
{
string text = digest.GenerateResponseHeader(base.CurrentRequest, base.Proxy.Credentials);
if (!string.IsNullOrEmpty(text))
{
binaryWriter.Write($"Proxy-Authorization: {text}".GetASCIIBytes());
binaryWriter.Write(HTTPRequest.EOL);
}
}
break;
}
}
}
binaryWriter.Write(HTTPRequest.EOL);
binaryWriter.Flush();
base.CurrentRequest.ProxyResponse = new HTTPResponse(base.CurrentRequest, Stream, isStreamed: false, isFromCache: false);
if (!base.CurrentRequest.ProxyResponse.Receive())
{
throw new Exception("Connection to the Proxy Server failed!");
}
if (HTTPManager.Logger.Level <= Loglevels.Information)
{
HTTPManager.Logger.Information("HTTPConnection", "Proxy returned - status code: " + base.CurrentRequest.ProxyResponse.StatusCode + " message: " + base.CurrentRequest.ProxyResponse.Message);
}
int statusCode = base.CurrentRequest.ProxyResponse.StatusCode;
if (statusCode == 407)
{
string text2 = DigestStore.FindBest(base.CurrentRequest.ProxyResponse.GetHeaderValues("proxy-authenticate"));
if (!string.IsNullOrEmpty(text2))
{
Digest orCreate = DigestStore.GetOrCreate(base.Proxy.Address);
orCreate.ParseChallange(text2);
if (base.Proxy.Credentials != null && orCreate.IsUriProtected(base.Proxy.Address) && (!base.CurrentRequest.HasHeader("Proxy-Authorization") || orCreate.Stale))
{
flag2 = true;
}
}
}
else if (!base.CurrentRequest.ProxyResponse.IsSuccess)
{
throw new Exception($"Proxy returned Status Code: \"{base.CurrentRequest.ProxyResponse.StatusCode}\", Message: \"{base.CurrentRequest.ProxyResponse.Message}\" and Response: {base.CurrentRequest.ProxyResponse.DataAsText}");
}
}while (flag2);
}
if (flag)
{
if (base.CurrentRequest.UseAlternateSSL)
{
TlsClientProtocol tlsClientProtocol = new TlsClientProtocol(Client.GetStream(), new SecureRandom());
List <string> list = new List <string>(1);
list.Add(base.CurrentRequest.CurrentUri.Host);
TlsClientProtocol tlsClientProtocol2 = tlsClientProtocol;
Uri currentUri = base.CurrentRequest.CurrentUri;
object verifyer;
if (base.CurrentRequest.CustomCertificateVerifyer == null)
{
ICertificateVerifyer certificateVerifyer = new AlwaysValidVerifyer();
verifyer = certificateVerifyer;
}
else
{
verifyer = base.CurrentRequest.CustomCertificateVerifyer;
}
tlsClientProtocol2.Connect(new LegacyTlsClient(currentUri, (ICertificateVerifyer)verifyer, base.CurrentRequest.CustomClientCredentialsProvider, list));
Stream = tlsClientProtocol.Stream;
}
else
{
SslStream sslStream = new SslStream(Client.GetStream(), leaveInnerStreamOpen: false, (object sender, X509Certificate cert, X509Chain chain, SslPolicyErrors errors) => base.CurrentRequest.CallCustomCertificationValidator(cert, chain));
if (!sslStream.IsAuthenticated)
{
sslStream.AuthenticateAsClient(base.CurrentRequest.CurrentUri.Host);
}
Stream = sslStream;
}
}
else
{
Stream = Client.GetStream();
}
}
}
