internal ReadAsyncResult(BufferedReadStream parent, AsyncCallback callback, object state) : base(null,state,callback)
{
this.parent = parent;
}
internal ReadAsyncResult(BufferedReadStream parent, AsyncCallback callback, object state) : base(null, state, callback)
{
_parent = parent;
}
void Initialize(BufferOffsetSize buffer)
{
WebConnection.Debug($"{ME} INIT: status={(int)StatusCode} bos={buffer.Offset}/{buffer.Size}");
long contentLength;
string contentType = Headers["Transfer-Encoding"];
bool chunkedRead = (contentType != null && contentType.IndexOf("chunked", StringComparison.OrdinalIgnoreCase) != -1);
string clength = Headers["Content-Length"];
if (!chunkedRead && !string.IsNullOrEmpty(clength))
{
if (!long.TryParse(clength, out contentLength))
{
contentLength = Int64.MaxValue;
}
}
else
{
contentLength = Int64.MaxValue;
}
string tencoding = null;
if (ExpectContent)
{
tencoding = Headers["Transfer-Encoding"];
}
ChunkedRead = (tencoding != null && tencoding.IndexOf("chunked", StringComparison.OrdinalIgnoreCase) != -1);
if (Version == HttpVersion.Version11 && RequestStream.KeepAlive)
{
KeepAlive = true;
var cncHeader = Headers[ServicePoint.UsesProxy ? "Proxy-Connection" : "Connection"];
if (cncHeader != null)
{
cncHeader = cncHeader.ToLower();
KeepAlive = cncHeader.IndexOf("keep-alive", StringComparison.Ordinal) != -1;
if (cncHeader.IndexOf("close", StringComparison.Ordinal) != -1)
{
KeepAlive = false;
}
}
if (!ChunkedRead && contentLength == Int64.MaxValue)
{
/*
* This is a violation of the HTTP Spec - the server neither send a
* "Content-Length:" nor a "Transfer-Encoding: chunked" header.
* The only way to recover from this is to keep reading until the
* remote closes the connection, so we can't reuse it.
*/
KeepAlive = false;
}
}
/*
* Inner layer:
* We may have read a few extra bytes while parsing the headers, these will be
* passed to us in the @buffer parameter and we need to read these before
* reading from the `InnerStream`.
*/
Stream networkStream;
if (!ExpectContent || (!ChunkedRead && buffer.Size >= contentLength))
{
bufferedEntireContent = true;
innerStream = new BufferedReadStream(Operation, null, buffer);
networkStream = innerStream;
}
else if (buffer.Size > 0)
{
networkStream = new BufferedReadStream(Operation, RequestStream.InnerStream, buffer);
}
else
{
networkStream = RequestStream.InnerStream;
}
/*
* Intermediate layer:
* - Wrap with MonoChunkStream when using chunked encoding.
* - Otherwise, we should have a Content-Length, wrap with
* FixedSizeReadStream to read exactly that many bytes.
*/
if (ChunkedRead)
{
innerStream = new MonoChunkStream(Operation, networkStream, Headers);
}
else if (bufferedEntireContent)
{
// 'innerStream' has already been set above.
}
else if (contentLength != Int64.MaxValue)
{
innerStream = new FixedSizeReadStream(Operation, networkStream, contentLength);
}
else
{
// Violation of the HTTP Spec - neither chunked nor length.
innerStream = new BufferedReadStream(Operation, networkStream, null);
}
/*
* Outer layer:
* - Decode gzip/deflate if requested.
*/
string content_encoding = Headers["Content-Encoding"];
if (content_encoding == "gzip" && (Request.AutomaticDecompression & DecompressionMethods.GZip) != 0)
{
innerStream = ContentDecodeStream.Create(Operation, innerStream, ContentDecodeStream.Mode.GZip);
Headers.Remove(HttpRequestHeader.ContentEncoding);
}
else if (content_encoding == "deflate" && (Request.AutomaticDecompression & DecompressionMethods.Deflate) != 0)
{
innerStream = ContentDecodeStream.Create(Operation, innerStream, ContentDecodeStream.Mode.Deflate);
Headers.Remove(HttpRequestHeader.ContentEncoding);
}
WebConnection.Debug($"{ME} INIT #1: - {ExpectContent} {closed} {nextReadCalled}");
if (!ExpectContent)
{
nextReadCalled = true;
Operation.Finish(true);
}
}
public virtual void OnTcpClientConnect(IAsyncResult asyn)
{
if (TcpClientConnected != null)
TcpClientConnected(this, new TWSTcpClientConnectedEventArgs(this, null));
try
{
// Here we complete/end the BeginAccept() asynchronous call
// by calling EndAccept() - which returns the reference to
// a new Socket object
TcpClient tc = _listener.EndAcceptTcpClient(asyn);
_clientCount++;
var s = new BufferedReadStream(tc.GetStream(), DEFAULT_BUFFER_SIZE);
TWSServerClientState connection = new TWSServerClientState(this, s);
lock (_clients) {
_clients.Add(connection);
}
connection.Start();
// Since the main Socket is now free, it can go back and wait for
// other clients who are attempting to connect
_listener.BeginAcceptTcpClient(_connectCallback, null);
}
catch (ObjectDisposedException)
{
System.Diagnostics.Debugger.Log(0, "1", "\n OnClientConnection: Socket has been closed\n");
}
catch (SocketException se)
{
OnError(new TWSError(TWSErrors.NO_VALID_CODE, se.Message));
}
}
