[MSDN Library April 2000] getprotobyname and getprotobynumber Functions in the SPI (14.3754225828262%)
MSDN Library - April 2000 > Platform SDK > Networking and Directory Services > Windows Sockets Version 2 > Windows Sockets Version 2 SPI > Overviews > Name Resolution Service Provider Requirements > Compatible Name Resolution for TCP/IP in the Windows Sockets 1.1 SPI