Windows Sockets 1.1 Compatibile Name Resolution for TCP/IP
Windows Sockets 1.1 defined a number of routines that were used for name
resolution with TCP/IP networks. These are customarily called the
getXbyY functions and include the following:
Asynchronous versions of these functions were also defined:
There are also two functions (now implemented in the WinSock 2 DLL) used to
convert dotted internet address notation to and from string and binary
representations, respectively:
All of these functions are specific to TCP/IP networks and developers of
protocol-independent applications are discouraged from continuing to utilize these
transport-specific functions. However, in order to retain strict backwards
compatibility with Windows Sockets 1.1, all of the above functions continue to be
supported as long as at least one name space provider is present that supports
the AF_INET address family.
The WS2_32.DLL implements these compatibility functions in terms of the new,
protocol-independent name resolution facilities using an appropriate sequence of
WSALookupServiceBegin/Next/End function calls. The details of how the getXbyY
functions are mapped to name resolution functions are provided below. The
WS2_32.DLL handles the differences between the asynchronous and synchronous versions
of the getXbyY functions, so only the implementation of the synchronous
getXbyY functions are discussed.
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