public void HttpSocket3TimeNativeSocket(int count)
{
var ep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 50651);
var req = new HttpRequest {
Uri = new Uri("http://127.0.0.1:50651/x2.html")
};
var reader = new HttpResponseReader();
var sw = Stopwatch.StartNew();
for (var i = 0; i < count; i++)
{
HttpResponse r;
using (var socket = new Socket(SocketType.Stream, ProtocolType.Tcp)){
socket.Connect(ep);
using (var s = new NetworkStream(socket)){
var w = new HttpRequestWriter(s);
w.Write(req);
r = reader.Read(s);
}
Assert.Greater(r.StringData.Length, 10);
}
}
sw.Stop();
Console.WriteLine(sw.Elapsed);
}
internal TcpServerConnection(ProxyServer proxyServer, TcpClient tcpClient, CustomBufferedStream stream)
{
this.tcpClient = tcpClient;
LastAccess = DateTime.Now;
this.proxyServer = proxyServer;
this.proxyServer.UpdateServerConnectionCount(true);
StreamWriter = new HttpRequestWriter(stream, proxyServer.BufferPool);
Stream = stream;
}
string Execute(HttpRequest request)
{
var ms = new MemoryStream();
var hrw = new HttpRequestWriter(ms);
hrw.Write(request);
var size = ms.Position;
ms.Position = 0;
var buffer = new byte[size];
ms.Read(buffer, 0, (int)size);
return(Encoding.UTF8.GetString(buffer));
}
/// <summary>
/// Creates a TCP connection to server
/// </summary>
/// <param name="remoteHostName">The remote hostname.</param>
/// <param name="remotePort">The remote port.</param>
/// <param name="httpVersion">The http version to use.</param>
/// <param name="isHttps">Is this a HTTPS request.</param>
/// <param name="applicationProtocols">The list of HTTPS application level protocol to negotiate if needed.</param>
/// <param name="isConnect">Is this a CONNECT request.</param>
/// <param name="proxyServer">The current ProxyServer instance.</param>
/// <param name="upStreamEndPoint">The local upstream endpoint to make request via.</param>
/// <param name="externalProxy">The external proxy to make request via.</param>
/// <param name="cancellationToken">The cancellation token for this async task.</param>
/// <returns></returns>
private async Task <TcpServerConnection> createServerConnection(string remoteHostName, int remotePort,
Version httpVersion, bool isHttps, List <SslApplicationProtocol> applicationProtocols, bool isConnect,
ProxyServer proxyServer, IPEndPoint upStreamEndPoint, ExternalProxy externalProxy,
CancellationToken cancellationToken)
{
bool useUpstreamProxy = false;
// check if external proxy is set for HTTP/HTTPS
if (externalProxy != null &&
!(externalProxy.HostName == remoteHostName && externalProxy.Port == remotePort))
{
useUpstreamProxy = true;
// check if we need to ByPass
if (externalProxy.BypassLocalhost && NetworkHelper.IsLocalIpAddress(remoteHostName))
{
useUpstreamProxy = false;
}
}
TcpClient tcpClient = null;
CustomBufferedStream stream = null;
SslApplicationProtocol negotiatedApplicationProtocol = default;
try
{
tcpClient = new TcpClient(upStreamEndPoint)
{
ReceiveTimeout = proxyServer.ConnectionTimeOutSeconds * 1000,
SendTimeout = proxyServer.ConnectionTimeOutSeconds * 1000,
SendBufferSize = proxyServer.BufferSize,
ReceiveBufferSize = proxyServer.BufferSize
};
await proxyServer.InvokeConnectionCreateEvent(tcpClient, false);
// If this proxy uses another external proxy then create a tunnel request for HTTP/HTTPS connections
if (useUpstreamProxy)
{
await tcpClient.ConnectAsync(externalProxy.HostName, externalProxy.Port);
}
else
{
await tcpClient.ConnectAsync(remoteHostName, remotePort);
}
stream = new CustomBufferedStream(tcpClient.GetStream(), proxyServer.BufferPool, proxyServer.BufferSize);
if (useUpstreamProxy && (isConnect || isHttps))
{
var writer = new HttpRequestWriter(stream, proxyServer.BufferPool, proxyServer.BufferSize);
var connectRequest = new ConnectRequest
{
OriginalUrl = $"{remoteHostName}:{remotePort}",
HttpVersion = httpVersion
};
connectRequest.Headers.AddHeader(KnownHeaders.Connection, KnownHeaders.ConnectionKeepAlive);
if (!string.IsNullOrEmpty(externalProxy.UserName) && externalProxy.Password != null)
{
connectRequest.Headers.AddHeader(HttpHeader.ProxyConnectionKeepAlive);
connectRequest.Headers.AddHeader(
HttpHeader.GetProxyAuthorizationHeader(externalProxy.UserName, externalProxy.Password));
}
await writer.WriteRequestAsync(connectRequest, cancellationToken : cancellationToken);
string httpStatus = await stream.ReadLineAsync(cancellationToken);
Response.ParseResponseLine(httpStatus, out _, out int statusCode, out string statusDescription);
if (statusCode != 200 && !statusDescription.EqualsIgnoreCase("OK") &&
!statusDescription.EqualsIgnoreCase("Connection Established"))
{
throw new Exception("Upstream proxy failed to create a secure tunnel");
}
await stream.ReadAndIgnoreAllLinesAsync(cancellationToken);
}
if (isHttps)
{
var sslStream = new SslStream(stream, false, proxyServer.ValidateServerCertificate,
proxyServer.SelectClientCertificate);
stream = new CustomBufferedStream(sslStream, proxyServer.BufferPool, proxyServer.BufferSize);
var options = new SslClientAuthenticationOptions
{
ApplicationProtocols = applicationProtocols,
TargetHost = remoteHostName,
ClientCertificates = null,
EnabledSslProtocols = proxyServer.SupportedSslProtocols,
CertificateRevocationCheckMode = proxyServer.CheckCertificateRevocation
};
await sslStream.AuthenticateAsClientAsync(options, cancellationToken);
#if NETCOREAPP2_1
negotiatedApplicationProtocol = sslStream.NegotiatedApplicationProtocol;
#endif
}
}
catch (Exception)
{
stream?.Dispose();
tcpClient?.Close();
throw;
}
return(new TcpServerConnection(proxyServer, tcpClient)
{
UpStreamProxy = externalProxy,
UpStreamEndPoint = upStreamEndPoint,
HostName = remoteHostName,
Port = remotePort,
IsHttps = isHttps,
NegotiatedApplicationProtocol = negotiatedApplicationProtocol,
UseUpstreamProxy = useUpstreamProxy,
StreamWriter = new HttpRequestWriter(stream, proxyServer.BufferPool, proxyServer.BufferSize),
Stream = stream,
Version = httpVersion
});
}
/// <summary>
/// Creates a TCP connection to server
/// </summary>
/// <param name="remoteHostName">The remote hostname.</param>
/// <param name="remotePort">The remote port.</param>
/// <param name="httpVersion">The http version to use.</param>
/// <param name="isHttps">Is this a HTTPS request.</param>
/// <param name="applicationProtocols">The list of HTTPS application level protocol to negotiate if needed.</param>
/// <param name="isConnect">Is this a CONNECT request.</param>
/// <param name="proxyServer">The current ProxyServer instance.</param>
/// <param name="session">The http session.</param>
/// <param name="upStreamEndPoint">The local upstream endpoint to make request via.</param>
/// <param name="externalProxy">The external proxy to make request via.</param>
/// <param name="cancellationToken">The cancellation token for this async task.</param>
/// <returns></returns>
private async Task <TcpServerConnection> createServerConnection(string remoteHostName, int remotePort,
Version httpVersion, bool isHttps, List <SslApplicationProtocol> applicationProtocols, bool isConnect,
ProxyServer proxyServer, SessionEventArgsBase session, IPEndPoint upStreamEndPoint, ExternalProxy externalProxy,
CancellationToken cancellationToken)
{
//deny connection to proxy end points to avoid infinite connection loop.
if (Server.ProxyEndPoints.Any(x => x.Port == remotePort) &&
NetworkHelper.IsLocalIpAddress(remoteHostName))
{
throw new Exception($"A client is making HTTP request to one of the listening ports of this proxy {remoteHostName}:{remotePort}");
}
if (externalProxy != null)
{
if (Server.ProxyEndPoints.Any(x => x.Port == externalProxy.Port) &&
NetworkHelper.IsLocalIpAddress(externalProxy.HostName))
{
throw new Exception($"A client is making HTTP request via external proxy to one of the listening ports of this proxy {remoteHostName}:{remotePort}");
}
}
bool useUpstreamProxy = false;
// check if external proxy is set for HTTP/HTTPS
if (externalProxy != null &&
!(externalProxy.HostName == remoteHostName && externalProxy.Port == remotePort))
{
useUpstreamProxy = true;
// check if we need to ByPass
if (externalProxy.BypassLocalhost && NetworkHelper.IsLocalIpAddress(remoteHostName))
{
useUpstreamProxy = false;
}
}
TcpClient tcpClient = null;
CustomBufferedStream stream = null;
SslApplicationProtocol negotiatedApplicationProtocol = default;
try
{
tcpClient = new TcpClient(upStreamEndPoint)
{
NoDelay = proxyServer.NoDelay,
ReceiveTimeout = proxyServer.ConnectionTimeOutSeconds * 1000,
SendTimeout = proxyServer.ConnectionTimeOutSeconds * 1000,
LingerState = new LingerOption(true, proxyServer.TcpTimeWaitSeconds)
};
//linux has a bug with socket reuse in .net core.
if (proxyServer.ReuseSocket && RunTime.IsWindows)
{
tcpClient.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
}
var hostname = useUpstreamProxy ? externalProxy.HostName : remoteHostName;
var port = useUpstreamProxy ? externalProxy.Port : remotePort;
var ipAddresses = await Dns.GetHostAddressesAsync(hostname);
if (ipAddresses == null || ipAddresses.Length == 0)
{
throw new Exception($"Could not resolve the hostname {hostname}");
}
if (session != null)
{
session.TimeLine["Dns Resolved"] = DateTime.Now;
}
for (int i = 0; i < ipAddresses.Length; i++)
{
try
{
await tcpClient.ConnectAsync(ipAddresses[i], port);
break;
}
catch (Exception e)
{
if (i == ipAddresses.Length - 1)
{
throw new Exception($"Could not establish connection to {hostname}", e);
}
}
}
if (session != null)
{
session.TimeLine["Connection Established"] = DateTime.Now;
}
await proxyServer.InvokeConnectionCreateEvent(tcpClient, false);
stream = new CustomBufferedStream(tcpClient.GetStream(), proxyServer.BufferPool, proxyServer.BufferSize);
if (useUpstreamProxy && (isConnect || isHttps))
{
var writer = new HttpRequestWriter(stream, proxyServer.BufferPool, proxyServer.BufferSize);
var connectRequest = new ConnectRequest
{
OriginalUrl = $"{remoteHostName}:{remotePort}",
HttpVersion = httpVersion
};
connectRequest.Headers.AddHeader(KnownHeaders.Connection, KnownHeaders.ConnectionKeepAlive);
if (!string.IsNullOrEmpty(externalProxy.UserName) && externalProxy.Password != null)
{
connectRequest.Headers.AddHeader(HttpHeader.ProxyConnectionKeepAlive);
connectRequest.Headers.AddHeader(
HttpHeader.GetProxyAuthorizationHeader(externalProxy.UserName, externalProxy.Password));
}
await writer.WriteRequestAsync(connectRequest, cancellationToken : cancellationToken);
string httpStatus = await stream.ReadLineAsync(cancellationToken);
Response.ParseResponseLine(httpStatus, out _, out int statusCode, out string statusDescription);
if (statusCode != 200 && !statusDescription.EqualsIgnoreCase("OK") &&
!statusDescription.EqualsIgnoreCase("Connection Established"))
{
throw new Exception("Upstream proxy failed to create a secure tunnel");
}
await stream.ReadAndIgnoreAllLinesAsync(cancellationToken);
}
if (isHttps)
{
var sslStream = new SslStream(stream, false, proxyServer.ValidateServerCertificate,
proxyServer.SelectClientCertificate);
stream = new CustomBufferedStream(sslStream, proxyServer.BufferPool, proxyServer.BufferSize);
var options = new SslClientAuthenticationOptions
{
ApplicationProtocols = applicationProtocols,
TargetHost = remoteHostName,
ClientCertificates = null,
EnabledSslProtocols = proxyServer.SupportedSslProtocols,
CertificateRevocationCheckMode = proxyServer.CheckCertificateRevocation
};
await sslStream.AuthenticateAsClientAsync(options, cancellationToken);
#if NETCOREAPP2_1
negotiatedApplicationProtocol = sslStream.NegotiatedApplicationProtocol;
#endif
if (session != null)
{
session.TimeLine["HTTPS Established"] = DateTime.Now;
}
}
}
catch (Exception)
{
stream?.Dispose();
tcpClient?.Close();
throw;
}
return(new TcpServerConnection(proxyServer, tcpClient)
{
UpStreamProxy = externalProxy,
UpStreamEndPoint = upStreamEndPoint,
HostName = remoteHostName,
Port = remotePort,
IsHttps = isHttps,
NegotiatedApplicationProtocol = negotiatedApplicationProtocol,
UseUpstreamProxy = useUpstreamProxy,
StreamWriter = new HttpRequestWriter(stream, proxyServer.BufferPool, proxyServer.BufferSize),
Stream = stream,
Version = httpVersion
});
}
/// <summary>
/// Creates a TCP connection to server
/// </summary>
/// <param name="server"></param>
/// <param name="remoteHostName"></param>
/// <param name="remotePort"></param>
/// <param name="httpVersion"></param>
/// <param name="isHttps"></param>
/// <param name="isConnect"></param>
/// <param name="upStreamEndPoint"></param>
/// <param name="externalProxy"></param>
/// <returns></returns>
internal async Task <TcpConnection> CreateClient(ProxyServer server,
string remoteHostName, int remotePort, Version httpVersion, bool isHttps,
bool isConnect, IPEndPoint upStreamEndPoint, ExternalProxy externalProxy)
{
bool useUpstreamProxy = false;
//check if external proxy is set for HTTP/HTTPS
if (externalProxy != null && !(externalProxy.HostName == remoteHostName && externalProxy.Port == remotePort))
{
useUpstreamProxy = true;
//check if we need to ByPass
if (externalProxy.BypassLocalhost && NetworkHelper.IsLocalIpAddress(remoteHostName))
{
useUpstreamProxy = false;
}
}
TcpClient client = null;
CustomBufferedStream stream = null;
try
{
client = new TcpClient(upStreamEndPoint);
//If this proxy uses another external proxy then create a tunnel request for HTTP/HTTPS connections
if (useUpstreamProxy)
{
await client.ConnectAsync(externalProxy.HostName, externalProxy.Port);
}
else
{
await client.ConnectAsync(remoteHostName, remotePort);
}
stream = new CustomBufferedStream(client.GetStream(), server.BufferSize);
if (useUpstreamProxy && (isConnect || isHttps))
{
var writer = new HttpRequestWriter(stream, server.BufferSize);
await writer.WriteLineAsync($"CONNECT {remoteHostName}:{remotePort} HTTP/{httpVersion}");
await writer.WriteLineAsync($"Host: {remoteHostName}:{remotePort}");
await writer.WriteLineAsync($"{KnownHeaders.Connection}: {KnownHeaders.ConnectionKeepAlive}");
if (!string.IsNullOrEmpty(externalProxy.UserName) && externalProxy.Password != null)
{
await HttpHeader.ProxyConnectionKeepAlive.WriteToStreamAsync(writer);
await writer.WriteLineAsync(KnownHeaders.ProxyAuthorization + ": Basic " +
Convert.ToBase64String(Encoding.UTF8.GetBytes(
externalProxy.UserName + ":" + externalProxy.Password)));
}
await writer.WriteLineAsync();
using (var reader = new CustomBinaryReader(stream, server.BufferSize))
{
string result = await reader.ReadLineAsync();
if (!new[] { "200 OK", "connection established" }.Any(s => result.ContainsIgnoreCase(s)))
{
throw new Exception("Upstream proxy failed to create a secure tunnel");
}
await reader.ReadAndIgnoreAllLinesAsync();
}
}
if (isHttps)
{
var sslStream = new SslStream(stream, false, server.ValidateServerCertificate, server.SelectClientCertificate);
stream = new CustomBufferedStream(sslStream, server.BufferSize);
await sslStream.AuthenticateAsClientAsync(remoteHostName, null, server.SupportedSslProtocols, server.CheckCertificateRevocation);
}
client.ReceiveTimeout = server.ConnectionTimeOutSeconds * 1000;
client.SendTimeout = server.ConnectionTimeOutSeconds * 1000;
}
catch (Exception)
{
stream?.Dispose();
client?.Close();
throw;
}
return(new TcpConnection(server)
{
UpStreamProxy = externalProxy,
UpStreamEndPoint = upStreamEndPoint,
HostName = remoteHostName,
Port = remotePort,
IsHttps = isHttps,
UseUpstreamProxy = useUpstreamProxy,
TcpClient = client,
StreamReader = new CustomBinaryReader(stream, server.BufferSize),
StreamWriter = new HttpRequestWriter(stream, server.BufferSize),
Stream = stream,
Version = httpVersion
});
}
/// <summary>
/// This is the core request handler method for a particular connection from client
/// Will create new session (request/response) sequence until
/// client/server abruptly terminates connection or by normal HTTP termination
/// </summary>
/// <param name="client"></param>
/// <param name="httpCmd"></param>
/// <param name="clientStream"></param>
/// <param name="clientStreamReader"></param>
/// <param name="clientStreamWriter"></param>
/// <param name="httpsConnectHostname"></param>
/// <param name="endPoint"></param>
/// <param name="connectRequest"></param>
/// <param name="isTransparentEndPoint"></param>
/// <returns></returns>
private async Task <bool> HandleHttpSessionRequest(TcpClient client, string httpCmd, CustomBufferedStream clientStream,
CustomBinaryReader clientStreamReader, HttpResponseWriter clientStreamWriter, string httpsConnectHostname,
ProxyEndPoint endPoint, ConnectRequest connectRequest, bool isTransparentEndPoint = false)
{
bool disposed = false;
TcpConnection connection = null;
//Loop through each subsequest request on this particular client connection
//(assuming HTTP connection is kept alive by client)
while (true)
{
if (string.IsNullOrEmpty(httpCmd))
{
break;
}
var args = new SessionEventArgs(BufferSize, endPoint, HandleHttpSessionResponse)
{
ProxyClient = { TcpClient = client },
WebSession = { ConnectRequest = connectRequest }
};
try
{
string httpMethod;
string httpUrl;
Version version;
Request.ParseRequestLine(httpCmd, out httpMethod, out httpUrl, out version);
//Read the request headers in to unique and non-unique header collections
await HeaderParser.ReadHeaders(clientStreamReader, args.WebSession.Request.RequestHeaders);
var httpRemoteUri = new Uri(httpsConnectHostname == null
? isTransparentEndPoint ? string.Concat("http://", args.WebSession.Request.Host, httpUrl) : httpUrl
: string.Concat("https://", args.WebSession.Request.Host ?? httpsConnectHostname, httpUrl));
args.WebSession.Request.RequestUri = httpRemoteUri;
args.WebSession.Request.OriginalRequestUrl = httpUrl;
args.WebSession.Request.Method = httpMethod;
args.WebSession.Request.HttpVersion = version;
args.ProxyClient.ClientStream = clientStream;
args.ProxyClient.ClientStreamReader = clientStreamReader;
args.ProxyClient.ClientStreamWriter = clientStreamWriter;
//proxy authorization check
if (httpsConnectHostname == null && await CheckAuthorization(clientStreamWriter, args) == false)
{
args.Dispose();
break;
}
PrepareRequestHeaders(args.WebSession.Request.RequestHeaders);
args.WebSession.Request.Host = args.WebSession.Request.RequestUri.Authority;
#if NET45
//if win auth is enabled
//we need a cache of request body
//so that we can send it after authentication in WinAuthHandler.cs
if (EnableWinAuth && !RunTime.IsRunningOnMono && args.WebSession.Request.HasBody)
{
await args.GetRequestBody();
}
#endif
//If user requested interception do it
if (BeforeRequest != null)
{
await BeforeRequest.InvokeParallelAsync(this, args, ExceptionFunc);
}
if (args.WebSession.Request.CancelRequest)
{
args.Dispose();
break;
}
//create a new connection if hostname changes
if (connection != null && !connection.HostName.Equals(args.WebSession.Request.RequestUri.Host, StringComparison.OrdinalIgnoreCase))
{
connection.Dispose();
UpdateServerConnectionCount(false);
connection = null;
}
if (connection == null)
{
connection = await GetServerConnection(args, false);
}
//if upgrading to websocket then relay the requet without reading the contents
if (args.WebSession.Request.UpgradeToWebSocket)
{
//prepare the prefix content
var requestHeaders = args.WebSession.Request.RequestHeaders;
byte[] requestBytes;
using (var ms = new MemoryStream())
using (var writer = new HttpRequestWriter(ms))
{
writer.WriteLine(httpCmd);
writer.WriteHeaders(requestHeaders);
requestBytes = ms.ToArray();
}
await connection.Stream.WriteAsync(requestBytes, 0, requestBytes.Length);
string httpStatus = await connection.StreamReader.ReadLineAsync();
Version responseVersion;
int responseStatusCode;
string responseStatusDescription;
Response.ParseResponseLine(httpStatus, out responseVersion, out responseStatusCode, out responseStatusDescription);
args.WebSession.Response.HttpVersion = responseVersion;
args.WebSession.Response.ResponseStatusCode = responseStatusCode;
args.WebSession.Response.ResponseStatusDescription = responseStatusDescription;
await HeaderParser.ReadHeaders(connection.StreamReader, args.WebSession.Response.ResponseHeaders);
await clientStreamWriter.WriteResponseAsync(args.WebSession.Response);
//If user requested call back then do it
if (BeforeResponse != null && !args.WebSession.Response.ResponseLocked)
{
await BeforeResponse.InvokeParallelAsync(this, args, ExceptionFunc);
}
await TcpHelper.SendRaw(clientStream, connection.Stream,
(buffer, offset, count) => { args.OnDataSent(buffer, offset, count); }, (buffer, offset, count) => { args.OnDataReceived(buffer, offset, count); });
args.Dispose();
break;
}
//construct the web request that we are going to issue on behalf of the client.
disposed = await HandleHttpSessionRequestInternal(connection, args, false);
if (disposed)
{
//already disposed inside above method
args.Dispose();
break;
}
//if connection is closing exit
if (args.WebSession.Response.ResponseKeepAlive == false)
{
args.Dispose();
break;
}
args.Dispose();
// read the next request
httpCmd = await clientStreamReader.ReadLineAsync();
}
catch (Exception e)
{
ExceptionFunc(new ProxyHttpException("Error occured whilst handling session request", e, args));
break;
}
}
if (!disposed)
{
Dispose(clientStream, clientStreamReader, clientStreamWriter, connection);
}
return(true);
}
/// <summary>
/// Prepare and send the http(s) request
/// </summary>
/// <returns></returns>
internal async Task SendRequest(bool enable100ContinueBehaviour)
{
var stream = ServerConnection.Stream;
byte[] requestBytes;
using (var ms = new MemoryStream())
using (var writer = new HttpRequestWriter(ms, bufferSize))
{
var upstreamProxy = ServerConnection.UpStreamProxy;
bool useUpstreamProxy = upstreamProxy != null && ServerConnection.IsHttps == false;
//prepare the request & headers
if (useUpstreamProxy)
{
writer.WriteLine($"{Request.Method} {Request.OriginalUrl} HTTP/{Request.HttpVersion.Major}.{Request.HttpVersion.Minor}");
}
else
{
writer.WriteLine($"{Request.Method} {Request.RequestUri.PathAndQuery} HTTP/{Request.HttpVersion.Major}.{Request.HttpVersion.Minor}");
}
//Send Authentication to Upstream proxy if needed
if (upstreamProxy != null &&
ServerConnection.IsHttps == false &&
!string.IsNullOrEmpty(upstreamProxy.UserName) &&
upstreamProxy.Password != null)
{
HttpHeader.ProxyConnectionKeepAlive.WriteToStream(writer);
HttpHeader.GetProxyAuthorizationHeader(upstreamProxy.UserName, upstreamProxy.Password).WriteToStream(writer);
}
//write request headers
foreach (var header in Request.Headers)
{
if (header.Name != "Proxy-Authorization")
{
header.WriteToStream(writer);
}
}
writer.WriteLine();
writer.Flush();
requestBytes = ms.ToArray();
}
await stream.WriteAsync(requestBytes, 0, requestBytes.Length);
await stream.FlushAsync();
if (enable100ContinueBehaviour)
{
if (Request.ExpectContinue)
{
string httpStatus = await ServerConnection.StreamReader.ReadLineAsync();
Version version;
int responseStatusCode;
string responseStatusDescription;
Response.ParseResponseLine(httpStatus, out version, out responseStatusCode, out responseStatusDescription);
//find if server is willing for expect continue
if (responseStatusCode == (int)HttpStatusCode.Continue &&
responseStatusDescription.Equals("continue", StringComparison.CurrentCultureIgnoreCase))
{
Request.Is100Continue = true;
await ServerConnection.StreamReader.ReadLineAsync();
}
else if (responseStatusCode == (int)HttpStatusCode.ExpectationFailed &&
responseStatusDescription.Equals("expectation failed", StringComparison.CurrentCultureIgnoreCase))
{
Request.ExpectationFailed = true;
await ServerConnection.StreamReader.ReadLineAsync();
}
}
}
}