Pragma headers

This is the list of Pragma header values or Enhanced Debug options you can use when creating a request in the Request Content (CURL) tool and Advanced URL Health Check problem scenario.

Pragma request header passed	Enhanced Debug option	Pragma response header obtained	Description
`akamai-x-cache-on`	`cache`	`X-Cache`	Returns information about how the edge server response was served. Some example responses are: - `TCP_HIT`: The object was fresh in cache and the object was fetched from the disk cache. - `TCP_MISS`: The object was not in cache and a server fetched it from an origin server. - `TCP_REFRESH_HIT`: The object was stale in cache and was successfully refreshed with the object from an origin server with the `If-Modified-Since` request. - `TCP_REFRESH_MISS`: The object was stale in cache and refresh obtained a new object from an origin server in response to the `If-Modified-Since` request. - `TCP_REFRESH_FAIL_HIT`: The object was stale in cache and an origin server couldn't be reached to refresh it, so the stale object was served. - `TCP_IMS_HIT`: The `If-Modified-Since` request arrived from a client and object was fresh in cache and served. - `TCP_NEGATIVE_HIT`: The object previously returned a `Not found` response (or other negatively cacheable response) and that cached response was hit for the new request. - `TCP_MEM_HIT`: The object was on a disk and in the memory cache. A server served the object without hitting the disk.
`akamai-x-cache-remote-on`	`cache`	`X-Cache-Remote`	Returns information about how the parent server response was served. For example responses, see the `akamai-x-cache-on` description.
`akamai-x-check-cacheable`	`cache`	`X-Check-Cacheable`	Returns a flag to indicate whether the response is cacheable, either `YES` and `NO`. Refer to the `X-Cache` header to determine whether the object actually was returned from cache.
`akamai-x-get-true-cache-key`	`cache`	`X-True-Cache-Key`	Returns the `true` cache key used for the MD5 hashing. It doesn't include the scheme (HTTP/HTTPS) or the request method (GET, POST etc.).
`akamai-x-get-cache-key`	`cache`	`X-Cache-Key`	Returns the cache key used for the request, including the serial number, CP code, and the TTL for the response.
`akamai-x-serial-no`	`cache`	`X-Serial`	Returns the serial number of the edge server which processed the request. This is also returned in the `X-Cache-Key` response header.
`akamai-x-get-request-id`	Any value	`X-Akamai-Request-ID`	Returns the ID of the request, used to identify the request in the logs. If `cache-h` (Tiered Distribution or SiteShield) is being used, the ID will be of the format `{parent-id}.{child-id}`. Note that this value is unique only to this edge server - use the Global Request Number to obtain a globally unique request identifier.
`akamai-x-get-extracted-values`	`vars`	`X-Akamai-Session-Info`	Returns one header for each non-hidden, non-sensitive variable used in the request.
`akamai-x-get-client-ip`	`client`	`X-Akamai-Pragma-Client-IP`	Returns the client IP address.
`akamai-x-get-ssl-client-session-id`	`ssl` or `tls`	`X-Akamai- SSL-Client-Sid`	Returns a hashed copy of the forward SSL ID. Should be used only for determining whether changes occurred during testing.
`akamai-x-feo-trace`	`feo`	`X-Akamai-Transformed` `X-Akamai-FEO-\*` (multiple)	Returns FEO-related information.
`akamai-x-ro-trace`	`ro`	`X-Akamai-RO-\*` (multiple)	Returns headers associated with Resource Optimizer.
`akamai-x-im-trace`	`im`	`X-Akamai-Session-Info` for specified variables	Returns one header for each variable associated with Image & Video Manager. Must be specified with the `akamai-x-get-extracted-values` Pragma value or the `vars` Enhanced Debug option.
`akamai-x-ew-onclientrequest`	`ewcrqs`	`X-Akamai-EdgeWorker-onClientRequest-Info`	See EdgeWorkers Standard debug headers.
`akamai-x-ew-onoriginrequest`	`eworqs`	`X-Akamai-EdgeWorker-onOriginRequest-Info`	See EdgeWorkers Standard debug headers.
`akamai-x-ew-onoriginresponse`	`eworsp`	`X-Akamai-EdgeWorker-onOriginResponse-Info`	See EdgeWorkers Standard debug headers.
`akamai-x-ew-onclientresponse`	`ewcrsp`	`X-Akamai-EdgeWorker-onClientResponse-Info`	See EdgeWorkers Standard debug headers.
`akamai-x-ew-responseprovider`	`ewrprv`	`X-Akamai-EdgeWorker-ResponseProvider-Info`	See EdgeWorkers Standard debug headers.
`akamai-x-ew-onbotsegmentavailable`	`ewbsa`	`X-Akamai-EdgeWorker-onBotSegmentAvailable-Info`	See EdgeWorkers Standard debug headers.
`akamai-x-ew-debug`	`ew`	All `X-Akamai-EdgeWorker-\*-Info` headers	See EdgeWorkers Standard debug headers.
`akamai-x-ew-log`	`ewlog`		See EdgeWorkers JavaScript logging.
`akamai-x-ew-debug-subs`	Not supported	`X-Akamai-Edgeworker-Subrequests`	See EdgeWorkers Standard debug headers.
`akamai-x-ew-debug-rp`	Not supported	`X-Akamai-EdgeWorker-ResponseProvider-Info`	See EdgeWorkers Standard debug headers.
`akamai-x-ew-subworkers`	Not supported		See EdgeWorkers Standard debug headers.
`akamai-x-get-cache-tags`	`tags` or `cache`	`Edge-Cache-Tag`	Returns any cache tags associated with the requested content.
`x-akamai-a2-trace`	`a2`	`X-Akamai-a2-\*` (multiple)	Returns headers associated with Adaptive Acceleration.
`akamai-x-debug-ro-botf`	`ro`	`X-Akamai-Session-Info`	Returns one header for each variable associated with Brotli and Resource Optimizer. Must be specified with the `akamai-x-get-extracted-values` Pragma value or the `vars` Enhanced Debug option.