/mcs/class/System.Runtime.Remoting/MonoHttp/RequestStream.cs
https://github.com/gustavo-melo/mono · C# · 226 lines · 158 code · 34 blank · 34 comment · 35 complexity · 49d7d465ff698d48da9ecb9bd4497110 MD5 · raw file
- #define EMBEDDED_IN_1_0
- //
- // System.Net.RequestStream
- //
- // Author:
- // Gonzalo Paniagua Javier (gonzalo@novell.com)
- //
- // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
- //
- // Permission is hereby granted, free of charge, to any person obtaining
- // a copy of this software and associated documentation files (the
- // "Software"), to deal in the Software without restriction, including
- // without limitation the rights to use, copy, modify, merge, publish,
- // distribute, sublicense, and/or sell copies of the Software, and to
- // permit persons to whom the Software is furnished to do so, subject to
- // the following conditions:
- //
- // The above copyright notice and this permission notice shall be
- // included in all copies or substantial portions of the Software.
- //
- // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- //
- #if EMBEDDED_IN_1_0
- using System.IO;
- using System.Net.Sockets;
- using System.Runtime.InteropServices;
- using System; using System.Net; namespace MonoHttp {
- class RequestStream : Stream
- {
- byte [] buffer;
- int offset;
- int length;
- long remaining_body;
- bool disposed;
- Stream stream;
- internal RequestStream (Stream stream, byte [] buffer, int offset, int length)
- : this (stream, buffer, offset, length, -1)
- {
- }
- internal RequestStream (Stream stream, byte [] buffer, int offset, int length, long contentlength)
- {
- this.stream = stream;
- this.buffer = buffer;
- this.offset = offset;
- this.length = length;
- this.remaining_body = contentlength;
- }
- public override bool CanRead {
- get { return true; }
- }
- public override bool CanSeek {
- get { return false; }
- }
- public override bool CanWrite {
- get { return false; }
- }
- public override long Length {
- get { throw new NotSupportedException (); }
- }
- public override long Position {
- get { throw new NotSupportedException (); }
- set { throw new NotSupportedException (); }
- }
- public override void Close ()
- {
- disposed = true;
- }
- public override void Flush ()
- {
- }
-
- // Returns 0 if we can keep reading from the base stream,
- // > 0 if we read something from the buffer.
- // -1 if we had a content length set and we finished reading that many bytes.
- int FillFromBuffer (byte [] buffer, int off, int count)
- {
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- if (off < 0)
- throw new ArgumentOutOfRangeException ("offset", "< 0");
- if (count < 0)
- throw new ArgumentOutOfRangeException ("count", "< 0");
- int len = buffer.Length;
- if (off > len)
- throw new ArgumentException ("destination offset is beyond array size");
- if (off > len - count)
- throw new ArgumentException ("Reading would overrun buffer");
- if (this.remaining_body == 0)
- return -1;
- if (this.length == 0)
- return 0;
- int size = Math.Min (this.length, count);
- if (this.remaining_body > 0)
- size = (int) Math.Min (size, this.remaining_body);
- if (this.offset > this.buffer.Length - size) {
- size = Math.Min (size, this.buffer.Length - this.offset);
- }
- if (size == 0)
- return 0;
- Buffer.BlockCopy (this.buffer, this.offset, buffer, off, size);
- this.offset += size;
- this.length -= size;
- if (this.remaining_body > 0)
- remaining_body -= size;
- return size;
- }
- public override int Read ([In,Out] byte[] buffer, int offset, int count)
- {
- if (disposed)
- throw new ObjectDisposedException (typeof (RequestStream).ToString ());
- // Call FillFromBuffer to check for buffer boundaries even when remaining_body is 0
- int nread = FillFromBuffer (buffer, offset, count);
- if (nread == -1) { // No more bytes available (Content-Length)
- return 0;
- } else if (nread > 0) {
- return nread;
- }
- nread = stream.Read (buffer, offset, count);
- if (nread > 0 && remaining_body > 0)
- remaining_body -= nread;
- return nread;
- }
- public override IAsyncResult BeginRead (byte [] buffer, int offset, int count,
- AsyncCallback cback, object state)
- {
- if (disposed)
- throw new ObjectDisposedException (typeof (RequestStream).ToString ());
- int nread = FillFromBuffer (buffer, offset, count);
- if (nread > 0 || nread == -1) {
- HttpStreamAsyncResult ares = new HttpStreamAsyncResult ();
- ares.Buffer = buffer;
- ares.Offset = offset;
- ares.Count = count;
- ares.Callback = cback;
- ares.State = state;
- ares.SynchRead = nread;
- ares.Complete ();
- return ares;
- }
- // Avoid reading past the end of the request to allow
- // for HTTP pipelining
- if (remaining_body >= 0 && count > remaining_body)
- count = (int) Math.Min (Int32.MaxValue, remaining_body);
- return stream.BeginRead (buffer, offset, count, cback, state);
- }
- public override int EndRead (IAsyncResult ares)
- {
- if (disposed)
- throw new ObjectDisposedException (typeof (RequestStream).ToString ());
- if (ares == null)
- throw new ArgumentNullException ("async_result");
- if (ares is HttpStreamAsyncResult) {
- HttpStreamAsyncResult r = (HttpStreamAsyncResult) ares;
- if (!ares.IsCompleted)
- ares.AsyncWaitHandle.WaitOne ();
- return r.SynchRead;
- }
- // Close on exception?
- int nread = stream.EndRead (ares);
- if (remaining_body > 0 && nread > 0)
- remaining_body -= nread;
- return nread;
- }
- public override long Seek (long offset, SeekOrigin origin)
- {
- throw new NotSupportedException ();
- }
- public override void SetLength (long value)
- {
- throw new NotSupportedException ();
- }
- public override void Write (byte[] buffer, int offset, int count)
- {
- throw new NotSupportedException ();
- }
- public override IAsyncResult BeginWrite (byte [] buffer, int offset, int count,
- AsyncCallback cback, object state)
- {
- throw new NotSupportedException ();
- }
- public override void EndWrite (IAsyncResult async_result)
- {
- throw new NotSupportedException ();
- }
- }
- }
- #endif