/// <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");
long scopeID = SqlClientEventSource.Log.SNIScopeEnterEvent("<sc.SNI.SNIMarsHandle.InternalSendAsync |SNI|INFO|SCOPE>");
try
{
lock (this)
{
if (_sequenceNumber >= _sendHighwater)
{
SqlClientEventSource.Log.SNITraceEvent("<sc.SNI.SNIMarsHandle.InternalSendAsync |SNI|INFO|> SNI Queue is full");
return(TdsEnums.SNI_QUEUE_FULL);
}
SNIPacket muxedPacket = SetPacketSMUXHeader(packet);
muxedPacket.SetCompletionCallback(callback ?? HandleSendComplete);
return(_connection.SendAsync(muxedPacket, callback));
}
}
finally
{
SqlClientEventSource.Log.SNIScopeLeaveEvent(scopeID);
}
}
/// <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 smux reservation in InternalSendAsync");
long scopeID = SqlClientEventSource.Log.TrySNIScopeEnterEvent("SNIMarsHandle.InternalSendAsync | SNI | INFO | SCOPE | Entering Scope {0}");
try
{
lock (this)
{
if (_sequenceNumber >= _sendHighwater)
{
SqlClientEventSource.Log.TrySNITraceEvent(s_className, EventType.INFO, "MARS Session Id {0}, _sequenceNumber {1}, _sendHighwater {2}, SNI Queue is full", args0: ConnectionId, args1: _sequenceNumber, args2: _sendHighwater);
return(TdsEnums.SNI_QUEUE_FULL);
}
SNIPacket muxedPacket = SetPacketSMUXHeader(packet);
muxedPacket.SetCompletionCallback(callback ?? HandleSendComplete);
SqlClientEventSource.Log.TrySNITraceEvent(s_className, EventType.INFO, "MARS Session Id {0}, _sequenceNumber {1}, _sendHighwater {2}, Sending packet", args0: ConnectionId, args1: _sequenceNumber, args2: _sendHighwater);
return(_connection.SendAsync(muxedPacket, callback));
}
}
finally
{
SqlClientEventSource.Log.TrySNIScopeLeaveEvent(scopeID);
}
}
/// <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)
{
lock (this)
{
if (_sequenceNumber >= _sendHighwater)
{
return(TdsEnums.SNI_QUEUE_FULL);
}
SNIPacket 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>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));
}
}