/// <summary>
/// Shifts the current receiving buffer offset with transferred bytes,
/// and reallocates buffer for receiving if necessary.
/// </summary>
internal void ShiftCurrentReceivingBuffer()
{
var shift = BytesTransferred;
_receivedData.Add(new ArraySegment <byte>(CurrentReceivingBuffer, SocketContext.Offset, shift));
CurrentReceivingBufferOffset += shift;
if (CurrentReceivingBufferOffset >= CurrentReceivingBuffer.Length)
{
// Replace with new buffer.
CurrentReceivingBuffer = new byte[CurrentReceivingBuffer.Length];
CurrentReceivingBufferOffset = 0;
}
// Set new offset and length.
SocketContext.SetBuffer(CurrentReceivingBuffer, CurrentReceivingBufferOffset, CurrentReceivingBuffer.Length - CurrentReceivingBufferOffset);
}
/// <summary>
/// Prepares this instance to send request or notification message.
/// </summary>
internal void Prepare()
{
if (messageType == MessageType.Response)
{
throw new InvalidOperationException("MessageType is not set.");
}
Contract.Assert(MethodName != null);
using (var packer = Packer.Create(methodNameBuffer, false)) {
packer.Pack(MethodName);
}
if (messageType == MessageType.Request)
{
Contract.Assert(MessageId != null);
Contract.Assert(RequestCompletionCallback != null);
sendingBuffer[0] = requestHeader;
sendingBuffer[1] = GetPackedMessageId();
sendingBuffer[2] = new ArraySegment <byte>(methodNameBuffer.GetBuffer(), 0, unchecked ((int)methodNameBuffer.Length));
sendingBuffer[3] = new ArraySegment <byte>(argumentsBuffer.GetBuffer(), 0, unchecked ((int)argumentsBuffer.Length));
}
else
{
Contract.Assert(NotificationCompletionCallback != null);
sendingBuffer[0] = notificationHeader;
sendingBuffer[1] = new ArraySegment <byte>(methodNameBuffer.GetBuffer(), 0, unchecked ((int)methodNameBuffer.Length));
sendingBuffer[2] = new ArraySegment <byte>(argumentsBuffer.GetBuffer(), 0, unchecked ((int)argumentsBuffer.Length));
sendingBuffer[3] = emptyBuffer;
}
SocketContext.SetBuffer(null, 0, 0);
SocketContext.BufferList = sendingBuffer;
}
/// <summary>
/// Prepares socket context array buffer with <see cref="CurrentReceivingBuffer"/>
/// </summary>
internal void PrepareReceivingBuffer()
{
SocketContext.SetBuffer(CurrentReceivingBuffer, 0, CurrentReceivingBuffer.Length);
}
/// <summary>
/// Set internal receiving buffer for testing purposes.
/// </summary>
/// <param name="data">Data to be set.</param>
internal void SetReceivingBuffer(byte[] data)
{
SocketContext.SetBuffer(data, 0, data.Length);
}