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cURL: Selecting a custom DNS server to resolve domain names
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| #!/usr/bin/env bash | |
| # this can be useful when developing against a custom DNS server, or | |
| # for example, if you made a change to the DNS settings of a domain, and you | |
| # know the authoritative nameserver IP address for a domain, you could use this | |
| # to bypass the intermediate DNS cache, and apply an HTTP request using the new | |
| # DNS settings supplied by your specified (authoritative) nameserver | |
| curl --dns-servers <DNSIP,DNSIP> url.com | |
| # acquire the authoritative nameserver IP using | |
| dig url.com NS | |
| # then ping the NS to get its IP address | |
| # you can also directly resolve | |
| curl \ | |
| --resolve www.example.com:443:198.14.3.5 \ | |
| https://www.example.com \ | |
| --verbose |
For MacPorts users,
sudo port install curl +ares
to get this feature.
I got this error
A requested feature, protocol or option was not found built-in in this libcurl due to a build-time decision.
I got this error
A requested feature, protocol or option was not found built-in in this libcurl due to a build-time decision.
@SalimF do you happen to find any solution?
For Mac and homebrew users: you can have brew compile curl for you with the --dns-servers option enabled via:
brew install curl --with-c-ares
I got:
Error: invalid option: --with-c-ares
I think by now its brew install curl-openssl
I think by now its
brew install curl-openssl
upvote
@SalimF do you happen to find any solution?
I solve it by installing latest version my distro repository offers .
$ curl --version
curl 7.58.0 (x86_64-pc-linux-gnu) libcurl/7.58.0 OpenSSL/1.1.1i zlib/1.2.11 libidn2/2.3.0 libpsl/0.19.1 (+libidn2/2.0.4) nghttp2/1.30.0 librtmp/2.3
Release-Date: 2018-01-24
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtmp rtsp smb smbs smtp smtps telnet tftp
Features: AsynchDNS IDN IPv6 Largefile GSS-API Kerberos SPNEGO NTLM NTLM_WB SSL libz TLS-SRP HTTP2 UnixSockets HTTPS-proxy PSL
I have the same issue - any ideas would be appreciated.
$ curl --dns-servers 96.7.136.168 www.google.com
curl: (4) A requested feature, protocol or option was not found built-in in this libcurl due to a build-time decision.
$ curl --version
curl 7.64.1 (x86_64-apple-darwin19.0) libcurl/7.64.1 (SecureTransport) LibreSSL/2.8.3 zlib/1.2.11 nghttp2/1.39.2
Release-Date: 2019-03-27
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtsp smb smbs smtp smtps telnet tftp
Features: AsynchDNS GSS-API HTTP2 HTTPS-proxy IPv6 Kerberos Largefile libz MultiSSL NTLM NTLM_WB SPNEGO SSL UnixSockets
brew install curl --with-c-ares
Usage: brew install [options] formula|cask [...]
Install a formula or cask. Additional options specific to a formula may be
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Unless HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK is set, brew upgrade or brew
reinstall will be run for outdated dependents and dependents with broken
linkage, respectively.
Unless HOMEBREW_NO_INSTALL_CLEANUP is set, brew cleanup will then be run for
the installed formulae or, every 30 days, for all formulae.
Unless HOMEBREW_NO_INSTALL_UPGRADE is set, brew install formula will
upgrade formula if it is already installed but outdated.
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previously installed keg-only or non-migrated
versions. When installing casks, overwrite
existing files (binaries and symlinks are
excluded, unless originally from the same
cask).
-v, --verbose Print the verification and postinstall steps.
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skip installing any dependencies of any kind.
If the dependencies are not already present,
the formula will have issues. If you're not
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PATH rather than using this flag.
--only-dependencies Install the dependencies with specified
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accept compilers that are provided by
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file issues if you encounter errors while
using this option.
-s, --build-from-source Compile formula from source even if a
bottle is provided. Dependencies will still
be installed from bottles if they are
available.
--force-bottle Install from a bottle if it exists for the
current or newest version of macOS, even if
it would not normally be used for
installation.
--include-test Install testing dependencies required to run
brew test formula.
--HEAD If formula defines it, install the HEAD
version, aka. main, trunk, unstable, master.
--fetch-HEAD Fetch the upstream repository to detect if
the HEAD installation of the formula is
outdated. Otherwise, the repository's HEAD
will only be checked for updates when a new
stable or development version has been
released.
--keep-tmp Retain the temporary files created during
installation.
--build-bottle Prepare the formula for eventual bottling
during installation, skipping any
post-install steps.
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architecture rather than the oldest
architecture supported by the version of
macOS the bottles are built on.
--display-times Print install times for each package at the
end of the run.
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shell. This allows the user to run
./configure --help and otherwise determine
how to turn the software package into a
Homebrew package.
-g, --git Create a Git repository, useful for creating
patches to the software.
--overwrite Delete files that already exist in the prefix
while linking.
--cask, --casks Treat all named arguments as casks.
--[no-]binaries Disable/enable linking of helper executables
(default: enabled).
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--[no-]quarantine Disable/enable quarantining of downloads
(default: enabled).
--skip-cask-deps Skip installing cask dependencies.
--appdir Target location for Applications (default:
/Applications).
--colorpickerdir Target location for Color Pickers (default:
~/Library/ColorPickers).
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(default: ~/Library/PreferencePanes).
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(default: ~/Library/Spotlight).
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~/Library/Dictionaries).
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~/Library/Services).
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~/Library/Input Methods).
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(default: ~/Library/Internet Plug-Ins).
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(default:
~/Library/Audio/Plug-Ins/Components).
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~/Library/Audio/Plug-Ins/VST).
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~/Library/Audio/Plug-Ins/VST3).
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~/Library/Screen Savers).
--language Comma-separated list of language codes to
prefer for cask installation. The first
matching language is used, otherwise it
reverts to the cask's default language. The
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-q, --quiet Make some output more quiet.
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Error: invalid option: --with-c-ares
MacPorts
thanks @patrick-webs
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For Mac and homebrew users: you can have brew compile curl for you with the --dns-servers option enabled via:
brew install curl --with-c-ares