SOCKET_GETADDRINFO(1p)User Contributed Perl DocumentatioSOCKET_GETADDRINFO(1p)
NAME
"socket_getaddrinfo" - command-line tool to "getaddrinfo(3)" resolver
SYNOPSIS
socket_getaddrinfo [options...] host service
DESCRIPTION
This tool provides a convenient command-line wrapper around the
getaddrinfo(3) resolver function. It will perform a single lookup and
print the returned results in a human-readable form. This is mainly
useful when debugging address resolution problems, because it allows
inspection of the getaddrinfo(3) behaviour itself, outside of any real
program that is trying to use it.
OPTIONS
--host, -H HOST
Hostname to resolve. If not supplied, will use the first
positional argument
--service, -S SERVICE
Service name or port number to resolve. If not supplied, will
use the second positional argument.
-4 Restrict to just "AF_INET" (IPv4) results
-6 Restrict to just "AF_INET6" (IPv6) results
--stream
Restrict to just "SOCK_STREAM" results
--dgram Restrict to just "SOCK_DGRAM" results
--proto PROTO
Restrict to just results of the given IP protocol
--passive
Set the "AI_PASSIVE" hint; results will used to bind() and
listen() rather than connect()
--canonical
Retrive the canonical name for the requested host
--help Display a help summary and exit
OUTPUT FORMAT
Each line of output will be given in a form that indicates the four
result fields of "ai_family", "ai_socktype", "ai_protocol" and
"ai_addr". The first three are printed in the form of a socket(2) call,
either symbolically or numerically, and the latter is printed as a
plain string following it. For example
socket(AF_INET , SOCK_STREAM, IPPROTO_TCP) + '127.0.0.1:80'
NOTE
Upstream this script is known as "getaddrinfo", but was renamed on
Debian.
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.34.0 2022-10-13 SOCKET_GETADDRINFO(1p)
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