|
|
@@ -0,0 +1,10 @@
|
|
|
+Respcet `clientid_prefix` config for MQTT bridges.
|
|
|
+
|
|
|
+As of version 5.4.1, EMQX limits MQTT Client ID lengths to 23 bytes.
|
|
|
+Previously, the system included the `clientid_prefix` in the hash calculation of the original, excessively long Client ID, thereby impacting the resulting shortened ID.
|
|
|
+
|
|
|
+Change Details:
|
|
|
+- Without Prefix: Behavior remains unchanged; EMQX will hash the entire Client ID into a 23-byte space (when longer than 23 bytes).
|
|
|
+- With Prefix:
|
|
|
+ - Prefix no more than 19 bytes: The prefix is preserved, and the remaining suffix is hashed into a 4-byte space.
|
|
|
+ - Prefix is 20 or more bytes: EMQX no longer attempts to shorten the Client ID, respecting the configured prefix in its entirety.
|
zmstone