Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / ManagedLibraries / Remoting / Channels / TCP / TcpClientSocketManager.cs / 1305376 / TcpClientSocketManager.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== //========================================================================== // File: TcpClientSocketManager.cs // // Summary: Class for managing a socket connection. // //========================================================================= using System; using System.Collections; using System.IO; using System.Net; using System.Net.Sockets; using System.Runtime.Remoting.Messaging; using System.Text; using System.Threading; using System.Globalization; namespace System.Runtime.Remoting.Channels.Tcp { // A client socket manager instance should encapsulate the socket // for the purpose of reading a response internal class TcpClientSocketHandler : TcpSocketHandler { // prebaked bytes private static byte[] s_endOfLineBytes = Encoding.ASCII.GetBytes("\r\n"); private String _machinePortAndSid; // "machineName:port:Sid" // connection state information private bool _bOneWayRequest = false; // was the request made OneWay? private bool _bChunked; private int _contentLength; private Stream _requestStream; // the request stream that we return from GetRequestStream() private TcpReadingStream _responseStream; // the stream that we returned from GetResponseStream() private TcpClientTransportSink _sink = null; public TcpClientSocketHandler(Socket socket, String machinePortAndSid, Stream stream, TcpClientTransportSink sink) : base(socket, stream) { _machinePortAndSid = machinePortAndSid; _sink = sink; } // TcpClientSocketHandler // Prepare for reading a new request off of the same socket protected override void PrepareForNewMessage() { _requestStream = null; _responseStream = null; } // PrepareForNewRequest public override void OnInputStreamClosed() { // make sure we read to the end of the response stream if (_responseStream != null) { _responseStream.ReadToEnd(); _responseStream = null; } // return socket to the cache ReturnToCache(); } // OnInputStreamClosed public BaseTransportHeaders ReadHeaders() { BaseTransportHeaders headers = new BaseTransportHeaders(); UInt16 operation; ReadVersionAndOperation(out operation); // At this point, we're always expecting a Reply, so check for that. if (operation != TcpOperations.Reply) { throw new RemotingException( String.Format( CultureInfo.CurrentCulture, CoreChannel.GetResourceString("Remoting_Tcp_ExpectingReplyOp"), operation.ToString(CultureInfo.CurrentCulture))); } // content length must come next (may be chunked or a specific length) ReadContentLength(out _bChunked, out _contentLength); // read to end of headers ReadToEndOfHeaders(headers); return headers; } // ReadHeaders public Stream GetRequestStream(IMessage msg, int contentLength, ITransportHeaders headers) { IMethodCallMessage mcm = (IMethodCallMessage)msg; String uri = mcm.Uri; _bOneWayRequest = RemotingServices.IsOneWay(mcm.MethodBase); ChunkedMemoryStream headerStream = new ChunkedMemoryStream(CoreChannel.BufferPool); // output preamble and version WritePreambleAndVersion(headerStream); // output opcode if (!_bOneWayRequest) WriteUInt16(TcpOperations.Request, headerStream); else WriteUInt16(TcpOperations.OneWayRequest, headerStream); // output content delimiter style WriteUInt16(TcpContentDelimiter.ContentLength, headerStream); WriteInt32(contentLength, headerStream); // output request uri WriteUInt16(TcpHeaders.RequestUri, headerStream); WriteByte(TcpHeaderFormat.CountedString, headerStream); WriteCountedString(uri, headerStream); // output rest of headers WriteHeaders(headers, headerStream); headerStream.WriteTo(NetStream); headerStream.Close(); _requestStream = NetStream; return _requestStream; } // GetRequestStream public void SendRequest(IMessage msg, ITransportHeaders headers, Stream contentStream) { int requestLength = (int)contentStream.Length; GetRequestStream(msg, requestLength, headers); StreamHelper.CopyStream(contentStream, NetStream); contentStream.Close(); } // SendRequest public Stream GetResponseStream() { if (!_bChunked) _responseStream = new TcpFixedLengthReadingStream(this, _contentLength); else _responseStream = new TcpChunkedReadingStream(this); return _responseStream; } // GetResponseStream public bool OneWayRequest { get { return _bOneWayRequest; } } public void ReturnToCache() { _sink.ClientSocketCache.ReleaseSocket( _machinePortAndSid, this); } } // TcpClientSocketHandler } // namespace System.Runtime.Remoting.Channels // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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