Proxy

Pass the :proxy option to the driver:

Capybara::Cuprite::Driver.new(
  app,
  proxy: { host: "127.0.0.1", port: 8080, user: "user", password: "password", bypass: ["localhost"] }
)

The proxy is passed to Chrome as a command-line flag when the browser starts.

When connecting to a remote browser with the :url option (browserless, Selenoid, etc.), Cuprite doesn't launch Chrome and the proxy flag is never applied, so configure the proxy on the remote browser itself. The user and password are still used to answer the proxy's authentication challenge.

The bypass option is a list of hosts that skip the proxy, so don't pass the host you want to go through it.

page.driver.set_proxy is deprecated in favor of the :proxy option.

See Ferrum's Proxy for more details.