[MSDN Library April 2000] Semantic Differences Between Multipoint Sockets and Regular Sockets in the SPI (33.1706522131399%)
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 > Protocol-Independent Multicast and Multipoint in the SPI