/// <summary>
/// Send packet asynchronously
/// </summary>
/// <param name="packet">SNI packet</param>
/// <param name="callback">Completion callback</param>
/// <returns>SNI error code</returns>
private uint InternalSendAsync(SNIPacket packet, SNIAsyncCallback callback)
{
SNIPacket encapsulatedPacket = null;
lock (this)
{
if (_sequenceNumber >= _sendHighwater)
{
return(TdsEnums.SNI_QUEUE_FULL);
}
encapsulatedPacket = GetSMUXEncapsulatedPacket(packet);
if (callback != null)
{
encapsulatedPacket.SetCompletionCallback(callback);
}
else
{
encapsulatedPacket.SetCompletionCallback(HandleSendComplete);
}
return(_connection.SendAsync(encapsulatedPacket, callback));
}
}
/// <summary>
/// Send packet asynchronously
/// </summary>
/// <param name="packet">SNI packet</param>
/// <param name="callback">Completion callback</param>
/// <returns>True if completed successfully, otherwise false</returns>
private bool InternalSendAsync(SNIPacket packet, SNIAsyncCallback callback)
{
SNIPacket encapsulatedPacket = null;
lock (this)
{
if (_sequenceNumber >= _sendHighwater)
{
return(false);
}
encapsulatedPacket = GetSMUXEncapsulatedPacket(packet);
if (callback != null)
{
encapsulatedPacket.SetCompletionCallback(callback);
}
else
{
encapsulatedPacket.SetCompletionCallback(HandleSendComplete);
}
SNIError sniError;
bool completedSync = _connection.SendAsync(encapsulatedPacket, callback, true, out sniError);
Debug.Assert(!completedSync && (sniError == null), "Should not have completed synchronously");
return(true);
}
}
/// <summary>
/// Send packet asynchronously
/// </summary>
/// <param name="packet">SNI packet</param>
/// <param name="callback">Completion callback</param>
/// <returns>SNI error code</returns>
private uint InternalSendAsync(SNIPacket packet, SNIAsyncCallback callback)
{
Debug.Assert(packet.ReservedHeaderSize == SNISMUXHeader.HEADER_LENGTH, "mars handle attempting to send muxed packet without mux reservation in InternalSendAsync");
lock (this)
{
if (_sequenceNumber >= _sendHighwater)
{
return(TdsEnums.SNI_QUEUE_FULL);
}
SNIPacket muxedPacket = SetPacketSMUXHeader(packet);
muxedPacket.SetCompletionCallback(callback ?? HandleSendComplete);
return(_connection.SendAsync(muxedPacket, callback));
}
}
