public static HttpRequestObject ReadRequest(Stream stream)
{
HttpRequestObject request = null;
byte[] buffer = null;
buffer = Read(stream);
if (buffer == null)
{
return(null);
}
HttpRequestHeader header = new HttpRequestHeader(Encoding.UTF8.GetString(buffer));
if (header._isParse == false)
{
return(null);
}
HttpContent content = new HttpContent();
if (0 < header._contentSize)
{
content.Set(ReadContent(stream, header._contentSize));
}
request = new HttpRequestObject(header, content);
return(request);
}
public static SslStreamSet Handshake(TcpClient client, HttpRequestObject request, Stream serverStream)
{
ConnectionInfo connectionInfo = ParseReceiveConnect(request);
SslStreamSet _sslStream = new SslStreamSet();
// Connection Remote Server.
SslTcpServer._traceLogger.OutputLog(string.Format("Connection Remote Server {0}:{1}.", connectionInfo.host, Convert.ToInt32(connectionInfo.port)));
SslTcpClient clientSocket = new SslTcpClient(client);
SslStream sslClientStream = clientSocket.Connect(connectionInfo.host, Convert.ToInt32(connectionInfo.port));
// Get Remote PublicKey.
ServerCertificate hostCertificate = clientSocket.ServerCertificate;
// Connection Established.
ConnectionEstablished(serverStream, connectionInfo.protocol);
// Authenticate to Client by Self PublicKey.
SslTcpServer._traceLogger.OutputLog("Authenticate with Client by Self PublicKey.");
SslStream sslServerStream = AuthenticateAsServer(serverStream);
// Output log.
OutputSslInfo(sslServerStream, sslClientStream, SslTcpServer._traceLogger);
_sslStream._serverStream = sslServerStream;
_sslStream._clientStream = sslClientStream;
return(_sslStream);
}
private static ConnectionInfo ParseReceiveConnect(HttpRequestObject request)
{
ConnectionInfo info = new ConnectionInfo();
string[] s = request._header._path.Split(':');
info.host = s[0];
info.port = s[1];
info.protocol = request._header._httpVersion;
SslTcpServer._traceLogger.OutputLog(request._header._source.Replace(System.Environment.NewLine, "\t"));
return(info);
}
public static void Write(HttpObject http, Stream stream)
{
byte[] bytes = null;
stream.WriteTimeout = SslTcpServer._write_timeout;
if (http.GetType() == typeof(HttpRequestObject))
{
HttpRequestObject request = (HttpRequestObject)http;
bytes = Encoding.UTF8.GetBytes(request._header._source);
}
else if (http.GetType() == typeof(HttpResponseObject))
{
HttpResponseObject response = (HttpResponseObject)http;
bytes = Encoding.UTF8.GetBytes(response._header._source);
}
Write(stream, bytes);
if (0 < http._content._length)
{
Write(stream, http._content.Get());
}
}
static public void Proxy(TcpClient serverSocket, IHttpEventListener listner)
{
Stream server = serverSocket.GetStream();
Stream client = null;
TcpClient clinetSocket = null;
bool bConnect = false;
string host = string.Empty;
bool bSSL = false;
while (true)
{
//-----------------------------------------
// Request.
// Clinet -> Proxy
//-----------------------------------------
HttpRequestObject request = null;
try
{
request = HttpStream.ReadRequest(server);
if (request == null)
{
break;
}
//-----------------------------------------
// SSL Handshake.
//-----------------------------------------
if (SslHandshake.IsSslConnection(request))
{
SslStreamSet sslset = SslHandshake.Handshake(clinetSocket, request, server);
server = sslset._serverStream;
client = sslset._clientStream;
bConnect = true;
bSSL = true;
continue;
}
//-----------------------------------------
// HTTP Conection.
//-----------------------------------------
else if (bSSL == false && (bConnect == false || host != request._header._host))
{
if (clinetSocket != null)
{
client.Close();
clinetSocket.Close();
}
clinetSocket = new TcpClient();
clinetSocket.Connect(request._header._host, request._header._port);
client = clinetSocket.GetStream();
bConnect = true;
}
//-----------------------------------------
// save host.
//-----------------------------------------
host = request._header._host;
//-----------------------------------------
// Observer.
//-----------------------------------------
if (listner != null)
{
request = listner.OnHttpRequestClient(request, server, client);
}
}catch (Exception ex) {
Close(serverSocket, clinetSocket, server, client);
throw ex;
}
//-----------------------------------------
// Modify Request.
// Proxy -> Server
//-----------------------------------------
try
{
HttpHeader.ModifyProxyRequest(request._header);
}catch (Exception ex) {
Close(serverSocket, clinetSocket, server, client);
throw ex;
}
//-----------------------------------------
// Request.
// Proxy -> Server
//-----------------------------------------
try
{
HttpStream.Write(request, client);
//-----------------------------------------
// Observer.
//-----------------------------------------
if (listner != null)
{
request = listner.OnHttpRequestServer(request, server, client);
}
}
catch (Exception ex)
{
Close(serverSocket, clinetSocket, server, client);
throw ex;
}
//-----------------------------------------
// Response.
// Proxy <- Server
//-----------------------------------------
HttpResponseObject response = null;
try
{
response = HttpStream.ReadResponse(client);
if (response == null)
{
break;
}
//-----------------------------------------
// Observer.
//-----------------------------------------
if (listner != null)
{
response = listner.OnHttpResponseClient(response, server, client);
}
}
catch (Exception ex)
{
Close(serverSocket, clinetSocket, server, client);
throw ex;
}
//-----------------------------------------
// Response.
// Client <- Proxy
//-----------------------------------------
try
{
HttpStream.Write(response, server);
//-----------------------------------------
// Observer.
//-----------------------------------------
if (listner != null)
{
response = listner.OnHttpResponseServer(response, server, client);
}
}
catch (Exception ex)
{
Close(serverSocket, clinetSocket, server, client);
throw ex;
}
if (request._header._isKeepAllive == false || response._header._isKeepAllive == false)
{
break;
}
}
Close(serverSocket, clinetSocket, server, client);
}
public HttpRequestObject OnHttpRequestServer(HttpRequestObject request, Stream serverStream, Stream clientStream)
{
_logger.OutputLog("Request Proxy -> Server");
_logger.OutputLog(request._header._source);
return(request);
}
public static bool IsSslConnection(HttpRequestObject request)
{
return(request._header._method == HTTP_METHOD.CONNECT);
}