Hi, My team uses Squid to proxy and cache certain external content in our web platform. Now, we are looking to use it to cache images that come from the Google Static Maps API. Sometimes, however, these images fail to load properly, but unfortunately they do not respond with any of the usual HTTP error codes. Instead, Google simply attaches a custom header to the response: https://developers.google.com/maps/documentation/static-maps/error-messages#warnings So, basically, the request will return a 200 OK, and the response body will be a valid image, but it'll have this extra header: x-staticmap-api-warning:Failed to fetch image url http://download.example.com/mapicons/1 This should be a transient error, so what I'd like to do is use Squid's retry_on_error option to have it just silently fetch the upstream image again, but customize what "error" means in this case to handle this extra header that Google sends in what's otherwise a 200 Ok response. Unfortunately I'm not all that familiar with Squid at this point. Is such a thing even possible? If so, where would I begin? thanks, Dan Dormont _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users
