httpuv: ipFamily – R documentation

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ipFamily

Check whether an address is IPv4 or IPv6

Description

Given an IP address, this checks whether it is an IPv4 or IPv6 address.

Usage

ipFamily(ip)

Arguments

`ip`	A single string representing an IP address.

Value

For IPv4 addresses, 4; for IPv6 addresses, 6. If the address is neither, -1.

Examples

ipFamily("127.0.0.1")   # 4
ipFamily("500.0.0.500") # -1
ipFamily("500.0.0.500") # -1

ipFamily("::")          # 6
ipFamily("::1")         # 6
ipFamily("fe80::1ff:fe23:4567:890a") # 6

httpuv

HTTP and WebSocket Server Library

v1.6.1

GPL (>= 2) | file LICENSE

Authors

Joe Cheng [aut], Winston Chang [aut, cre], RStudio, PBC [cph], Hector Corrada Bravo [ctb], Jeroen Ooms [ctb], Andrzej Krzemienski [cph] (optional.hpp)

Initial release