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2abfc759b9
Option cleanups: --get is not upload --form* are post - added several options into ldap, smtp, imap and pop3 - shortened the category descriptions in the list category curl fixes: --create-dirs removed from 'curl' --ftp-create-dirs removed from 'curl' --netrc moved to 'auth' from 'curl' --netrc-file moved to 'auth' from 'curl' --netrc-optional moved to 'auth' from 'curl' --no-buffer moved to 'output' from 'curl' --no-clobber removed from 'curl' --output removed from 'curl' --output-dir removed from 'curl' --remove-on-error removed from 'curl' Add a "global" category: - Made all "global" options set this category Add a "deprecated" category: - Moved the deprecated options to it (maybe they should not be in any category long term) Add a 'timeout' category - Put a number of appropriate options in it Add an 'ldap' category - Put the LDAP related option in there Remove categories "ECH" and "ipfs" - They should not be categories. Had only one single option each. Remove category "misc" - It should not be a category as it is impossible to know when to browse it. --use-ascii moved to ftp and output --xattr moved to output --service-name moved to auth Managen fixes: - errors if an option is given a category name that is not already setup for in code - verifies that options set `scope: global` also is put in category `global´ Closes #14101
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| c | SPDX-License-Identifier | Long | Arg | Help | Added | Category | Multi | See-also | Example | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. | curl | happy-eyeballs-timeout-ms | <ms> | Time for IPv6 before IPv4 | 7.59.0 | connection timeout | single |
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--happy-eyeballs-timeout-ms
Happy Eyeballs is an algorithm that attempts to connect to both IPv4 and IPv6 addresses for dual-stack hosts, giving IPv6 a head-start of the specified number of milliseconds. If the IPv6 address cannot be connected to within that time, then a connection attempt is made to the IPv4 address in parallel. The first connection to be established is the one that is used.
The range of suggested useful values is limited. Happy Eyeballs RFC 6555 says "It is RECOMMENDED that connection attempts be paced 150-250 ms apart to balance human factors against network load." libcurl currently defaults to 200 ms. Firefox and Chrome currently default to 300 ms.