eric-becker · eric-becker · May 2, 2026 · May 2, 2026
diff --git a/README.md b/README.md
@@ -2,6 +2,8 @@
 
 Zero-hop MQTT anti-flood service for self-hosted [EMQX](https://www.emqx.io/) brokers serving [Meshtastic](https://meshtastic.org/) networks. Intercepts MQTT PUBLISH events via [EMQX ExHook](https://www.emqx.io/docs/en/latest/extensions/exhook.html) (gRPC) and sets `MeshPacket.hop_limit=0` in-flight before delivery to subscribers, preventing LoRa rebroadcast floods when gateways downlink MQTT packets.
 
+Tested against EMQX 6.2.0 (ExHook v3 proto, EMQX 5.9.0+).
+
 ## Why
 
 Meshtastic's official public broker enforces a [zero-hop policy](https://meshtastic.org/docs/software/integrations/mqtt/#zero-hop-policy): packets delivered from the broker to gateway nodes are zeroed before downlink so they don't rebroadcast across the local LoRa mesh. This prevents internet-scale MQTT traffic from flooding regional radio networks.

diff --git a/docker-compose.test.yaml b/docker-compose.test.yaml
@@ -6,7 +6,7 @@
 
 services:
   emqx:
-    image: emqx/emqx:6.1.1
+    image: emqx/emqx:6.2.0
     container_name: floodgate-test-emqx
     networks: [floodgate-test-net]
     ports:

diff --git a/docker-compose.yaml b/docker-compose.yaml
@@ -1,6 +1,6 @@
 services:
   emqx:
-    image: emqx/emqx:6.1.1
+    image: emqx/emqx:6.2.0
     ports:
       - "1883:1883"     # MQTT
       - "18083:18083"   # Dashboard / REST API

diff --git a/proto/emqx/exhook.proto b/proto/emqx/exhook.proto
@@ -1,6 +1,6 @@
 // Copyright (c) 2020-2026 EMQ Technologies Co., Ltd. All Rights Reserved.
 // Licensed under the Apache License, Version 2.0
-// Source: https://github.com/emqx/emqx/blob/release-60/apps/emqx_exhook/priv/protos/exhook.proto
+// Source: https://github.com/emqx/emqx/blob/release-62/apps/emqx_exhook/priv/protos/exhook.proto
 //
 // v3: EMQX 5.9.0+ / EMQX 6.x
 // v2: EMQX 5.0–5.8.x
-Original file line number
+Diff line change
@@ Expand Up / @@ -2,6 +2,8 @@ @@
     Zero-hop MQTT anti-flood service for self-hosted [EMQX](https://www.emqx.io/) brokers serving [Meshtastic](https://meshtastic.org/) networks. Intercepts MQTT PUBLISH events via [EMQX ExHook](https://www.emqx.io/docs/en/latest/extensions/exhook.html) (gRPC) and sets `MeshPacket.hop_limit=0` in-flight before delivery to subscribers, preventing LoRa rebroadcast floods when gateways downlink MQTT packets.
+    Tested against EMQX 6.2.0 (ExHook v3 proto, EMQX 5.9.0+).
     ## Why
     Meshtastic's official public broker enforces a [zero-hop policy](https://meshtastic.org/docs/software/integrations/mqtt/#zero-hop-policy): packets delivered from the broker to gateway nodes are zeroed before downlink so they don't rebroadcast across the local LoRa mesh. This prevents internet-scale MQTT traffic from flooding regional radio networks.
@@ Expand Down @@