47 lines
1.7 KiB
Markdown
47 lines
1.7 KiB
Markdown
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---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Long: resolve
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Arg: <[+]host:port:addr[,addr]...>
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Help: Resolve the host+port to this address
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Added: 7.21.3
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Category: connection dns
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Multi: append
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See-also:
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- connect-to
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- alt-svc
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Example:
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- --resolve example.com:443:127.0.0.1 $URL
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---
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# `--resolve`
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Provide a custom address for a specific host and port pair. Using this, you
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can make the curl requests(s) use a specified address and prevent the
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otherwise normally resolved address to be used. Consider it a sort of
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/etc/hosts alternative provided on the command line. The port number should be
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the number used for the specific protocol the host is used for. It means
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you need several entries if you want to provide address for the same host but
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different ports.
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By specifying '*' as host you can tell curl to resolve any host and specific
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port pair to the specified address. Wildcard is resolved last so any --resolve
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with a specific host and port is used first.
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The provided address set by this option is used even if --ipv4 or --ipv6 is
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set to make curl use another IP version.
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By prefixing the host with a '+' you can make the entry time out after curl's
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default timeout (1 minute). Note that this only makes sense for long running
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parallel transfers with a lot of files. In such cases, if this option is used
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curl tries to resolve the host as it normally would once the timeout has
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expired.
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Support for providing the IP address within [brackets] was added in 7.57.0.
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Support for providing multiple IP addresses per entry was added in 7.59.0.
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Support for resolving with wildcard was added in 7.64.0.
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Support for the '+' prefix was added in 7.75.0.
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