void ReadReply_Recv_End(IAsyncResult ar)
{
ReadReply_SO stateObj = (ReadReply_SO)ar.AsyncState;
try
{
stateObj.UpdateContext();
int num = EndReceive(ar);
if (0 == num)
{
stateObj.SetCompleted();
}
else
{
stateObj.Reply.Add(stateObj.Buffer, 0, num);
// handle the end of reply
int afterEndPos = FindReplyEnd(
stateObj.Reply.Data,
stateObj.Reply.Size);
if (afterEndPos > 0)
{
if (afterEndPos < num) // read after reply finished?
{
// put data back into the buffer for further
// processing in receive functions
PutBufferData(stateObj.Buffer, afterEndPos, num - afterEndPos);
stateObj.Reply.CutTail(num - afterEndPos);
}
stateObj.SetCompleted();
}
else
{
if (stateObj.Reply.Size > _maxReplySize)
{
throw new ProtocolViolationException("Web proxy reply exceed maximum length.");
}
BeginReceive(
stateObj.Buffer,
0,
stateObj.Buffer.Length,
new AsyncCallback(ReadReply_Recv_End),
stateObj);
}
}
}
catch (Exception e)
{
stateObj.Exception = e;
stateObj.SetCompleted();
}
}
private void ReadReply_Recv_End(IAsyncResult ar)
{
ReadReply_SO asyncState = (ReadReply_SO)ar.AsyncState;
try
{
asyncState.UpdateContext();
int length = this.EndReceive(ar);
if (length == 0)
{
asyncState.SetCompleted();
}
else
{
asyncState.Reply.Add(asyncState.Buffer, 0, length);
int offset = this.FindReplyEnd(asyncState.Reply.Data, asyncState.Reply.Size);
if (offset > 0)
{
if (offset < length)
{
this.PutBufferData(asyncState.Buffer, offset, length - offset);
asyncState.Reply.CutTail(length - offset);
}
asyncState.SetCompleted();
}
else
{
if (asyncState.Reply.Size > this._maxReplySize)
{
throw new ProtocolViolationException("Web proxy reply exceed maximum length.");
}
this.BeginReceive(asyncState.Buffer, 0, asyncState.Buffer.Length, new AsyncCallback(this.ReadReply_Recv_End), asyncState);
}
}
}
catch (Exception exception)
{
asyncState.Exception = exception;
asyncState.SetCompleted();
}
}
