InternalWebRequestStreamWrapper.cs :  » 2.6.4-mono-.net-core » System.Net » System » Net » C# / CSharp Open Source

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C# / CSharp Open Source » 2.6.4 mono .net core » System.Net 
System.Net » System » Net » InternalWebRequestStreamWrapper.cs
/*
 * InternalWebRequestStreamWrapper.cs.
 *
 * Contact:
 *   Moonlight List (moonlight-list@lists.ximian.com)
 *
 * Copyright 2008,2010 Novell, Inc. (http://www.novell.com)
 *
 * See the LICENSE file included with the distribution for details.
 * 
 */

using System.IO;

namespace System.Net{

  internal sealed class InternalWebRequestStreamWrapper : Stream {

    MemoryStream stream;
    byte[] data;
    
    internal InternalWebRequestStreamWrapper (MemoryStream s)
    {
      stream = s;
    }

    public override bool CanRead {
      get {
         return stream.CanRead;
      }
    }

    public override bool CanSeek {
      get {
         return stream.CanSeek;
      }
    }

    public override bool CanWrite {
      get {
         return stream.CanWrite;
      }
    }

    public override long Length {
      get {
         return stream.Length;
      }
    }

    public override long Position {
      get {
         return stream.Position;
      }
      set {
        stream.Position = value;
      }
    }

    public override void Flush ()
    {
      stream.Flush ();
    }

    public override void Close ()
    {
      try {
        // When we POST data then the actual bytes are needed after the stream is closed (e.g. DRT287)
        // However a MemoryStream will clear itself and throw ObjectDisposedException in such case
        data = stream.ToArray ();
        stream.Close ();
      }
      finally {
        // if used from WebClient then notify that the stream was closed
        if (WebClient != null)
          WebClient.WriteStreamClosedCallback (WebClientData);
      }
    }

    public override void SetLength (long value)
    {
      stream.SetLength (value);
    }

    public override int Read (byte [] buffer, int offset, int count)
    {
      return stream.Read (buffer, offset, count);
    }

    public override void Write (byte [] buffer, int offset, int count)
    {
      stream.Write (buffer, offset, count);
    }

    public override void WriteByte (byte value)
    {
      stream.WriteByte (value);
    }

    public override long Seek (long offset, SeekOrigin origin)
    {
      return stream.Seek (offset, origin);
    }

    internal byte[] GetData ()
    {
      // hold a copy of the data if the stream was closed
      return data;
    }

    internal MemoryStream InnerStream {
      get { return stream; }
    }

    internal WebClient WebClient {
      get; set;
    }

    internal object WebClientData {
      get; set;
    }
  }
}

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