public override int Read(byte[] buffer, int offset, int count)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (offset >= buffer.Length)
{
throw new ArgumentOutOfRangeException("offset");
}
if (offset + count > buffer.Length)
{
throw new ArgumentOutOfRangeException("count");
}
ReadSyncResult readResult = new ReadSyncResult();
bool shouldInvokeWriter;
if (!TryCompleteReadRequest(buffer, offset, count, readResult, out shouldInvokeWriter))
{
if (shouldInvokeWriter)
{
InvokeWriter();
}
}
return(readResult.WaitFor());
}
public override int Read(byte[] buffer, int offset, int count)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (offset >= buffer.Length)
{
throw new ArgumentOutOfRangeException("offset");
}
if (offset + count > buffer.Length)
{
throw new ArgumentOutOfRangeException("count");
}
ReadSyncResult readResult = new ReadSyncResult();
bool shouldInvokeWriter;
if (!TryCompleteReadRequest(buffer, offset, count, readResult, out shouldInvokeWriter))
{
if (shouldInvokeWriter)
{
InvokeWriter();
}
}
return readResult.WaitFor();
}
public override IAsyncResult BeginRead(byte[] buffer, int offset, int count, AsyncCallback callback, object state)
{
Debug.WriteLine("BNS ({0}): BeginRead (buffer, {1}, {2}) [m_inputBuffer_pos = {3}, m_inputBuffer_read_ahead = {4}]",
NetworkStream.InternalSocket.InternalRemoteEndPoint, offset, count, m_inputBuffer_pos, m_inputBuffer_read_ahead);
ReadAsyncResult rar;
if (buffer == null)
{
throw new ArgumentNullException("buffer is null");
}
int len = buffer.Length;
if (offset < 0 || offset > len)
{
throw new ArgumentOutOfRangeException("offset exceeds the size of buffer");
}
if (count < 0 || offset + count > len)
{
throw new ArgumentOutOfRangeException("offset+size exceeds the size of buffer");
}
CheckObjectDisposedException();
if (!m_stream.CanRead)
{
throw new NotSupportedException(Locale.GetText("Cannot read from stream"));
}
if (m_inputBuffer_pos < m_inputBuffer_read_ahead)
{
int curLength = m_inputBuffer_read_ahead - m_inputBuffer_pos;
if (count <= curLength)
{
Buffer.BlockCopy(m_inputBuffer, m_inputBuffer_pos, buffer, offset, count);
m_inputBuffer_pos += count;
var rsr = new ReadSyncResult
{
AsyncState = state,
DataReceived = count
};
if (callback != null)
{
callback.BeginInvokeEx(rsr, null, null);
}
return(rsr);
}
if (curLength != 0)
{
Buffer.BlockCopy(m_inputBuffer, m_inputBuffer_pos, buffer, offset, curLength);
count -= curLength;
offset += curLength;
if (!m_stream.InternalSocket.DataAvailable)
{
m_inputBuffer_pos = 0;
m_inputBuffer_read_ahead = 0;
var rsr = new ReadSyncResult
{
AsyncState = state,
DataReceived = curLength
};
if (callback != null)
{
callback.BeginInvokeEx(rsr, null, null);
}
return(rsr);
}
}
rar = new ReadAsyncResult
{
DataReceived = curLength,
AsyncState = state
};
}
else
{
rar = new ReadAsyncResult
{
DataReceived = 0,
AsyncState = state
};
}
m_inputBuffer_pos = 0;
m_inputBuffer_read_ahead = 0;
if (count > m_bufferSize / 2)
{
if (rar.DataReceived == 0)
{
return(m_stream.BeginRead(buffer, offset, count, callback, state));
}
m_stream.BeginRead(buffer, offset, count, iar =>
{
var rs = (ReadState)iar.AsyncState;
rs.readAsyncResult.DataReceived += m_stream.EndRead(iar);
rs.readAsyncResult.IsCompleted = true;
((CEvent)rs.readAsyncResult.AsyncWaitHandle).Set();
if (rs.callback != null)
{
try
{
rs.callback(rs.readAsyncResult);
}
catch
{
}
}
}, new ReadState
{
callback = callback,
readAsyncResult = rar
});
return(rar);
}
EnsureInputBuffer();
m_stream.BeginRead(m_inputBuffer, 0, m_bufferSize, iar =>
{
var rs = (ReadState)iar.AsyncState;
m_inputBuffer_read_ahead = m_stream.EndRead(iar);
if (rs.count > m_inputBuffer_read_ahead)
{
rs.count = m_inputBuffer_read_ahead;
}
rs.readAsyncResult.DataReceived += rs.count;
if (rs.count != 0)
{
Buffer.BlockCopy(m_inputBuffer, 0, rs.buffer, rs.offset, rs.count);
m_inputBuffer_pos = rs.count;
}
rs.readAsyncResult.IsCompleted = true;
((CEvent)rs.readAsyncResult.AsyncWaitHandle).Set();
if (rs.callback != null)
{
try
{
rs.callback(rs.readAsyncResult);
}
catch
{
}
}
}, new ReadState
{
callback = callback,
readAsyncResult = rar,
buffer = buffer,
offset = offset,
count = count
});
return(rar);
}
