| BOOL IsAddressRoutable( |
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LPCTSTR lpszAddress |
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| ); |
| BOOL IsAddressRoutable( |
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LPINTERNET_ADDRESS lpAddress |
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| ); |
The IsAddressRoutable method determines if the IP address is routable over the Internet.
Parameters
- lpszAddress
- A string that specifies the IP address.
- lpAddress
- A pointer to an INTERNET_ADDRESS structure that specifies the
IP address.
Return Value
If the method succeeds and the IP address is routable over the
Internet, the
return value is non-zero. If the method fails or the address is not
routable, the return value is zero. If the parameter is
NULL, or the address family is not supported,
the last error code will be updated. If the address is valid but not
routable, the last error code
will be set to NO_ERROR.
Remarks
A routable IP address is one that can be reached by anyone over the
public Internet. These are also commonly referred to as "public
addresses" which are typically assigned to networks and individual
hosts by an Internet service provider. There are also certain
addresses that are not routable over the Internet, and used to address
systems over a local network or private intranet. This function can be
used to determine if a given IP address is public (routable) or
private.
Requirements
Minimum Desktop Platform: Windows 7 Service Pack 1
Minimum Server Platform: Windows Server 2008 R2 Service Pack 1
Header File: cswsock11.h
Import Library: cswskv11.lib
See Also
GetAddress,
GetExternalAddress,
IsAddressNull,
INTERNET_ADDRESS
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