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Configuring Proxy Requests
The role and benefits of proxying requests during the visual testing process.
To Percy’s API
Percy’s SDKs implement the industry convention for proxying requests via HTTP_PROXY, HTTPS_PROXY, and NO_PROXY environment variables.
# unix example, set the env variable the way your OS/System expects
$ export HTTP_PROXY=http://a-proxy.example.com:1234
$ export HTTPS_PROXY=https://another-proxy.example.com:1234
# general syntax for setting proxy
$ export HTTPS_PROXY=https://username:password@proxyurl:proxyport
$ export NO_PROXY=http://example.com:1234
# windows example, set the env variable the way your OS/System expects
> $Env::HTTP_PROXY = 'http://a-proxy.example.com:1234'
> $Env::HTTPS_PROXY = 'https://another-proxy.example.com:1234'
# general syntax for setting proxy
> $Env::HTTPS_PROXY = 'https://username:password@proxyurl:proxyport'
> $Env::NO_PROXY = 'http://example.com:1234'
# windows example, set the env variable the way your OS/System expects
$ set HTTP_PROXY=http://a-proxy.example.com:1234
$ set HTTPS_PROXY=https://another-proxy.example.com:1234
# general syntax for setting proxy
$ set HTTPS_PROXY=https://username:password@proxyurl:proxyport
$ set NO_PROXY=http://example.com:1234
By default, the values are set to empty.
Asset discovery
If you need to proxy requests that occur in asset discovery, you may need to pass a --proxy-server CLI flag as a browser launch argument in the Percy discovery configuration.
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