![Mosquitto MQTT Start Support OCSP Stapling since version 1.6 | Mosquitto MQTT 自版本 1.6 開始支援 OCSP stapling](https://2.share.photo.xuite.net/yhunglee/129ed3e/20553124/1239385498_l.jpg)
Mosquitto starts to support OCSP stapling since version 1.6(20190417). Online Certificate Status Protocol(OCSP) can be used to query a certicate from client to server whether it is still valid or be revoked. OCSP is an alternative way for Certificate Revoke List(CRL). One of pros of OCSP is no need to maintain large list same as CRL. Most part of cons is that few programs support it. Some well-known programs such
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