resolve.d 1.7 KB

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  1. c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
  2. SPDX-License-Identifier: curl
  3. Long: resolve
  4. Arg: <[+]host:port:addr[,addr]...>
  5. Help: Resolve the host+port to this address
  6. Added: 7.21.3
  7. Category: connection dns
  8. Example: --resolve example.com:443:127.0.0.1 $URL
  9. See-also: connect-to alt-svc
  10. Multi: append
  11. ---
  12. Provide a custom address for a specific host and port pair. Using this, you
  13. can make the curl requests(s) use a specified address and prevent the
  14. otherwise normally resolved address to be used. Consider it a sort of
  15. /etc/hosts alternative provided on the command line. The port number should be
  16. the number used for the specific protocol the host will be used for. It means
  17. you need several entries if you want to provide address for the same host but
  18. different ports.
  19. By specifying '*' as host you can tell curl to resolve any host and specific
  20. port pair to the specified address. Wildcard is resolved last so any --resolve
  21. with a specific host and port will be used first.
  22. The provided address set by this option will be used even if --ipv4 or --ipv6
  23. is set to make curl use another IP version.
  24. By prefixing the host with a '+' you can make the entry time out after curl's
  25. default timeout (1 minute). Note that this will only make sense for long
  26. running parallel transfers with a lot of files. In such cases, if this option
  27. is used curl will try to resolve the host as it normally would once the
  28. timeout has expired.
  29. Support for providing the IP address within [brackets] was added in 7.57.0.
  30. Support for providing multiple IP addresses per entry was added in 7.59.0.
  31. Support for resolving with wildcard was added in 7.64.0.
  32. Support for the '+' prefix was was added in 7.75.0.
  33. This option can be used many times to add many host names to resolve.