Akamai Pragma Header


Adding the Pragma header in http request is very helpful when troubleshooting Akamai caching. The Pragma header can be:"akamai-x-cache-on, akamai-x-cache-remote-on, akamai-x-check-cacheable, akamai-x-get-cache-key, akamai-x-get-extracted-values, akamai-x-get-nonces, akamai-x-get-ssl-client-session-id, akamai-x-get-true-cache-key, akamai-x-serial-no" In the http response, the following value can tell us whether the URL is cached by Akamai, and how long it is cached. X-Check-Cacheable: It shows whether the … Continue reading Akamai Pragma Header

Incomplete certificate chain


There are 3 methods to test the incomplete certificate chain: 1) https://www.ssllabs.com/ssltest/analyze.html?d=example.com The error is: Chain issues Incomplete 2) curl -v -o /dev/null https://example.com The error is: * NSS error -8179 (SEC_ERROR_UNKNOWN_ISSUER) * Peer's Certificate issuer is not recognized. 3) openssl s_client -showcerts -verify 10 -connect example.com:443 The error is: Verify return code: 21 (unable … Continue reading Incomplete certificate chain