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//
// System.Net.WebAsyncResult
//
// Authors:
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) 2003 Ximian, Inc (http://www.ximian.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.
//
using System.IO;
using System.Threading;
namespace System.Net
{
class WebAsyncResult : IAsyncResult
{
ManualResetEvent handle;
bool synch;
bool isCompleted;
AsyncCallback cb;
object state;
int nbytes;
IAsyncResult innerAsyncResult;
bool callbackDone;
Exception exc;
HttpWebResponse response;
Stream writeStream;
byte [] buffer;
int offset;
int size;
object locker = new object ();
public bool EndCalled;
public bool AsyncWriteAll;
public WebAsyncResult (AsyncCallback cb, object state)
{
this.cb = cb;
this.state = state;
}
public WebAsyncResult (HttpWebRequest request, AsyncCallback cb, object state)
{
this.cb = cb;
this.state = state;
}
public WebAsyncResult (AsyncCallback cb, object state, byte [] buffer, int offset, int size)
{
this.cb = cb;
this.state = state;
this.buffer = buffer;
this.offset = offset;
this.size = size;
}
internal void SetCompleted (bool synch, Exception e)
{
this.synch = synch;
exc = e;
lock (locker) {
isCompleted = true;
if (handle != null)
handle.Set ();
}
}
internal void Reset ()
{
callbackDone = false;
exc = null;
response = null;
writeStream = null;
exc = null;
lock (locker) {
isCompleted = false;
if (handle != null)
handle.Reset ();
}
}
internal void SetCompleted (bool synch, int nbytes)
{
this.synch = synch;
this.nbytes = nbytes;
exc = null;
lock (locker) {
isCompleted = true;
if (handle != null)
handle.Set ();
}
}
internal void SetCompleted (bool synch, Stream writeStream)
{
this.synch = synch;
this.writeStream = writeStream;
exc = null;
lock (locker) {
isCompleted = true;
if (handle != null)
handle.Set ();
}
}
internal void SetCompleted (bool synch, HttpWebResponse response)
{
this.synch = synch;
this.response = response;
exc = null;
lock (locker) {
isCompleted = true;
if (handle != null)
handle.Set ();
}
}
internal void DoCallback ()
{
if (!callbackDone && cb != null) {
callbackDone = true;
if (synch)
cb (this);
else
ThreadPool.QueueUserWorkItem (CB, null);
}
}
void CB (object unused)
{
cb (this);
}
internal void WaitUntilComplete ()
{
if (IsCompleted)
return;
AsyncWaitHandle.WaitOne ();
}
internal bool WaitUntilComplete (int timeout, bool exitContext)
{
if (IsCompleted)
return true;
return AsyncWaitHandle.WaitOne (timeout, exitContext);
}
public object AsyncState {
get { return state; }
}
public WaitHandle AsyncWaitHandle {
get {
lock (locker) {
if (handle == null)
handle = new ManualResetEvent (isCompleted);
}
return handle;
}
}
public bool CompletedSynchronously {
get { return synch; }
}
public bool IsCompleted {
get {
lock (locker) {
return isCompleted;
}
}
}
internal bool GotException {
get { return (exc != null); }
}
internal Exception Exception {
get { return exc; }
}
internal int NBytes {
get { return nbytes; }
set { nbytes = value; }
}
internal IAsyncResult InnerAsyncResult {
get { return innerAsyncResult; }
set { innerAsyncResult = value; }
}
internal Stream WriteStream {
get { return writeStream; }
}
internal HttpWebResponse Response {
get { return response; }
}
internal byte [] Buffer {
get { return buffer; }
}
internal int Offset {
get { return offset; }
}
internal int Size {
get { return size; }
}
}
}
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