If Artifactory is installed behind a reverse proxy, it needs a URL base for you to use SSH authentication.
Therefore, you must either configure the Custom URL Base field, or pass the X-Artifactory-Override-Base-Url header.
If Artifactory is installed behind a reverse proxy, it needs a URL base to rewrite the cocoapods source reference URL.
Therefore, you must either configure the Custom URL Base field, or pass the X-Artifactory-Override-Base-Url header.