CS_PACKETSIZE determines the packet size that Client-Library uses when sending Tabular Data Stream (TDS) packets.
If an application needs to send or receive large amounts of data, a larger packet size may improve efficiency.
On Open Client Version 15.0, two capabilities are included: CS_REQ_SRVPKTSIZE and CS_NO_SRVPKTSIZE.
CS_REQ_SRVPKTSIZE is always set by this version of CT-Library and can be retrieved with ct_capability.
CS_NO_SRVPKTSIZE is used when clients cannot work with a packet size larger than that requested, and is set and retrieved with ct_capability.
