Force DNS resolving in cURL with the --resolve switch

It’s possible to force DNS resolving in cURL using the --resolve switch.

The --resolve switch allows you to tell curl which address to request when it would resolve a given hostname.

The format of the argument is domain:port:ip

# HTTPS Example
curl -I -L https://domain.example.org/ \
  --resolve domain.example.org:443:192.168.0.1

# HTTP Example
curl -I -L http://domain.example.org/ \
  --resolve domain.example.org:80:192.168.0.1

Handy for testing a new server or load balancer you’ve prepared, or when wanting to bypass Cloudflare Proxying without touching Cloudflare’s settings.

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Published by Bramus!

Bramus is a frontend web developer from Belgium. From the moment he discovered view-source at the age of 14 (way back in 1997), he fell in love with the web and has been tinkering with it ever since (more …)

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