| LPHOSTENT GetHostByAddress(
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LPVOID lpvAddress, |
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INT cbAddress, |
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INT nAddressFamily |
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The GetHostByAddress method returns a pointer to a
HOSTENT structure which contains the
results of a successful search for the host specified by address
parameter.
Parameters
- lpvAddress
- Pointer to an integer IPv4 address in network byte order.
- cbAddress
- The length of the address in bytes; this value should always be
4.
- nAddressFamily
- The type of address being resolved; this value should always be
AF_INET as defined in the Windows Sockets header file.
Return Value
If the method succeeds, the return value is a pointer to a
HOSTENT structure. If the method fails, the return value is NULL.
To get extended error information, call GetLastError.
Remarks
The application must never attempt to modify this structure or
to free any of its components. Only one copy of this structure is
allocated per thread, so the application should copy any
information it needs before issuing any other function calls. To
convert an IPv4 address string in dotted notation to a 32-bit IP
address, use the GetAddress method.
This method is included for compatibility with existing
applications which already use the HOSTENT structure. Because this
method returns a pointer to a complex structure, it may not be
suitable for some programming languages.
This method is not compatible with IPv6 addresses. For
applications that must support both IPv4 and IPv6 address formats,
use the GetHostAddress and GetHostName methods.
Requirements
Client: Requires Windows 7, Windows Vista or Windows
XP.
Server: Requires Windows Server 2008 or Windows Server
2003.
Header: Include cstools7.h.
Library: Use csdnsav7.lib.
Unicode: Implemented as Unicode and ANSI versions.
See Also
GetHostAddress, GetHostByName, GetHostInfo, GetHostName, GetHostServices, GetRecord, GetResolverAddress, RegisterServer
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