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| c | SPDX-License-Identifier | Long | Arg | Help | Protocols | Added | Category | Multi | See-also | Example | ||
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| Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. | curl | haproxy-clientip | <IP address> | Sets client IP in HAProxy PROXY protocol v1 header | HTTP | 8.2.0 | http proxy | single |
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--haproxy-clientip
Sets a client IP in HAProxy PROXY protocol v1 header at the beginning of the connection.
For valid requests, IPv4 addresses must be indicated as a series of exactly 4 integers in the range [0..255] inclusive written in decimal representation separated by exactly one dot between each other. Heading zeroes are not permitted in front of numbers in order to avoid any possible confusion with octal numbers. IPv6 addresses must be indicated as series of 4 hexadecimal digits (upper or lower case) delimited by colons between each other, with the acceptance of one double colon sequence to replace the largest acceptable range of consecutive zeroes. The total number of decoded bits must exactly be 128.
Otherwise, any string can be accepted for the client IP and get sent.
It replaces --haproxy-protocol if used, it is not necessary to specify both flags.