[MSDN Library April 2000] Protocol Independent-Out-of-Band Data in the SPI (21.3321343863216%)
MSDN Library - April 2000 > Platform SDK > Networking and Directory Services > Windows Sockets Version 2 > Windows Sockets Version 2 SPI > Overviews > Windows Sockets 2 Transport Provider Requirements > Socket I/O > Out-of-Band Data in the SPI