# Latest **URL:** https://community.hivemq.com/latest.md?page=2 [Latest](https://community.hivemq.com/latest.md) · [Categories](https://community.hivemq.com/categories.md) **Page:** 3 --- ## [OCPP Driver Support](https://community.hivemq.com/t/ocpp-driver-support/3823)
**Author:** [@pridesleap](https://community.hivemq.com/u/pridesleap)\ **Replies:** 2\ **Last updated:** [July 3, 2025, 6:27pm UTC](https://community.hivemq.com/t/ocpp-driver-support/3823 "2025-07-03T18:27:50Z")
Has anyone implemented, or is aware of, a HiveMQ Edge implementation where it was communicating with an OCPP network? Im looking for a solution that directly connects to HMQ Edge via a driver and not an intermediate prot… --- ## [Designing MQTT Topics for ESP-NOW + HiveMQ Integration](https://community.hivemq.com/t/designing-mqtt-topics-for-esp-now-hivemq-integration/3820)
**Author:** [@ariaj](https://community.hivemq.com/u/ariaj)\ **Replies:** 1\ **Last updated:** [June 30, 2025, 2:39pm UTC](https://community.hivemq.com/t/designing-mqtt-topics-for-esp-now-hivemq-integration/3820 "2025-06-30T14:39:06Z")
Hi everyone, I’m working on an IoT setup where ESP32 modules use ESPNOW to communicate locally (multi-node mesh). Then, one node publishes aggregated data to an MQTT broker via HiveMQ. I used this ESP‑NOW tutorial as a s… --- ## [Timeout on Serverless](https://community.hivemq.com/t/timeout-on-serverless/3664)
**Author:** [@Ratsea](https://community.hivemq.com/u/Ratsea)\ **Replies:** 1\ **Last updated:** [June 27, 2025, 8:38am UTC](https://community.hivemq.com/t/timeout-on-serverless/3664 "2025-06-27T08:38:39Z")
Hello, I am trying to use a simple MQTT server to pass data from a remote IOT setup to my home. I am using a Soracom SIM as the internet connection. I send the data to Soracom via MQTT and it transfers the data to my Hi… --- ## [HiveMQ Edge: Sending MQTT data to OPC UA server](https://community.hivemq.com/t/hivemq-edge-sending-mqtt-data-to-opc-ua-server/3802)
**Author:** [@marko.lipprandt](https://community.hivemq.com/u/marko.lipprandt)\ **Replies:** 5\ **Last updated:** [June 26, 2025, 10:28am UTC](https://community.hivemq.com/t/hivemq-edge-sending-mqtt-data-to-opc-ua-server/3802 "2025-06-26T10:28:29Z")
I am testing HiveMQ edge. I can receive data from an OPC UA server which are then distributed as a MQTT message. But the other direction ( distribute data from a MQTT message as OPC AU to a server ) does not work. How… --- ## [HIveMQ Cloud Enterprise Edition features](https://community.hivemq.com/t/hivemq-cloud-enterprise-edition-features/2257)
**Author:** [@gildas\_leaute](https://community.hivemq.com/u/gildas_leaute)\ **Replies:** 1\ **Last updated:** [August 1, 2023, 2:50pm UTC](https://community.hivemq.com/t/hivemq-cloud-enterprise-edition-features/2257 "2023-08-01T14:50:14Z")
Hi, Being new to HiveMQ, I am currently testing a ServerLess free edition that lacks some features that I need. Therefore I am trying to understand the features of an Enterprise Edition (HiveMQ Cloud, referred as a “De… --- ## [Attach debugger to HiveMQ-Edge?](https://community.hivemq.com/t/attach-debugger-to-hivemq-edge/3775)
**Author:** [@thomassorensen](https://community.hivemq.com/u/thomassorensen)\ **Replies:** 1\ **Last updated:** [June 17, 2025, 1:59pm UTC](https://community.hivemq.com/t/attach-debugger-to-hivemq-edge/3775 "2025-06-17T13:59:49Z")
I’m working on an custom module for HiveMQ-Edge, and the process has been surprisingly easy, but it’s a bit cumbersome to debug/troubleshoot. Is there anyway to connect a remote debugger? In Ignition I can add the follo… --- ## [Cann't connect to webclient](https://community.hivemq.com/t/cannt-connect-to-webclient/3727)
**Author:** [@darshpatel](https://community.hivemq.com/u/darshpatel)\ **Replies:** 1\ **Last updated:** [June 16, 2025, 2:38pm UTC](https://community.hivemq.com/t/cannt-connect-to-webclient/3727 "2025-06-16T14:38:21Z")
I have already created my credentials, and also turned off my firewall, even that i cant connect it back, i have also recreated the username and password --- ## [Publishing with SIMcom A7670](https://community.hivemq.com/t/publishing-with-simcom-a7670/3417)
**Author:** [@frarugi87](https://community.hivemq.com/u/frarugi87)\ **Replies:** 1\ **Last updated:** [June 8, 2025, 8:23am UTC](https://community.hivemq.com/t/publishing-with-simcom-a7670/3417 "2025-06-08T08:23:06Z")
Hi all Since I lost some time to understand how the module works and I wasn’t able to find resources to have a working example (apart from arduino libraries which handle the SSL communication in software), here is the l… --- ## [HiveMQ Influxdb Sparkplug extension](https://community.hivemq.com/t/hivemq-influxdb-sparkplug-extension/3710)
**Author:** [@hewa](https://community.hivemq.com/u/hewa)\ **Replies:** 13\ **Last updated:** [May 28, 2025, 1:36pm UTC](https://community.hivemq.com/t/hivemq-influxdb-sparkplug-extension/3710 "2025-05-28T13:36:00Z")
I am using the the HiveMQ extension to ingest data to InfluxDB. I have verified the Sparkplug B DDATA messages using Chariot MQTT Client and everything looks fine. And they can be serialized from the Sparkplug B proto s… --- ## [Getting Mqtt5DisconnectException exception](https://community.hivemq.com/t/getting-mqtt5disconnectexception-exception/3783)
**Author:** [@Aashima](https://community.hivemq.com/u/Aashima)\ **Replies:** 1\ **Last updated:** [May 23, 2025, 12:56pm UTC](https://community.hivemq.com/t/getting-mqtt5disconnectexception-exception/3783 "2025-05-23T12:56:03Z")
com.hivemq.client.mqtt.mqtt5.exceptions.Mqtt5DisconnectException: QoS 2 PUBLISH must not be resent during the same connection. fun publishToTopic(publishListener: WsMqttPublishListener, topic: String, payload: ByteArray… --- ## [Getting connection failed exception](https://community.hivemq.com/t/getting-connection-failed-exception/3753)
**Author:** [@Aashima](https://community.hivemq.com/u/Aashima)\ **Replies:** 2\ **Last updated:** [May 23, 2025, 12:25pm UTC](https://community.hivemq.com/t/getting-connection-failed-exception/3753 "2025-05-23T12:25:35Z")
I am handling the exception on addDisconnectedListener and on connection fail just logging internal log but what is exact reason for failure. I am getting this cast exception but i am not doing any casting just logging t… --- ## [HiveMQ IPv6 tls secure listener problem](https://community.hivemq.com/t/hivemq-ipv6-tls-secure-listener-problem/3777)
**Author:** [@minecet](https://community.hivemq.com/u/minecet)\ **Replies:** 3\ **Last updated:** [May 22, 2025, 7:40am UTC](https://community.hivemq.com/t/hivemq-ipv6-tls-secure-listener-problem/3777 "2025-05-22T07:40:58Z")
Hi, I am working both with HiveMQ Enterprise free edition on native Windows and also Docker HiveMQ-CE editions and face the same problem. I have some Perinet (HARTING Company) devices that support IPv6 only and need TLS… --- ## [Timeout in subscribeAsync](https://community.hivemq.com/t/timeout-in-subscribeasync/3780)
**Author:** [@SydtrafikSupport](https://community.hivemq.com/u/SydtrafikSupport)\ **Replies:** 1\ **Last updated:** [May 21, 2025, 7:19am UTC](https://community.hivemq.com/t/timeout-in-subscribeasync/3780 "2025-05-21T07:19:49Z")
I am following the getting started guide, but a time out in the first example, when the program calls SubscribeAsync in line 26. What am I missing? --- ## [HiveMQ Client as a native Ignition module](https://community.hivemq.com/t/hivemq-client-as-a-native-ignition-module/3771)
**Author:** [@system24seven](https://community.hivemq.com/u/system24seven)\ **Replies:** 1\ **Last updated:** [May 14, 2025, 7:42am UTC](https://community.hivemq.com/t/hivemq-client-as-a-native-ignition-module/3771 "2025-05-14T07:42:59Z")
In case it is helpful to anyone, I have been developing a free MQTT client module for Inductive Automation’s Ignition platform based on the HiveMQ client libraries. It is relatively early development, but already it is a… --- ## [Catch message data whilst in transit from client to server PUBLISH](https://community.hivemq.com/t/catch-message-data-whilst-in-transit-from-client-to-server-publish/3762)
**Author:** [@yoram](https://community.hivemq.com/u/yoram)\ **Replies:** 1\ **Last updated:** [May 9, 2025, 1:28pm UTC](https://community.hivemq.com/t/catch-message-data-whilst-in-transit-from-client-to-server-publish/3762 "2025-05-09T13:28:01Z")
Hi, I’ve been looking around to catch message whilst being published so I can fail the delivery if a message is above a certain size. From what I understand the interceptor will be called once the whole message has beem… --- ## [Public broker recently overloaded?](https://community.hivemq.com/t/public-broker-recently-overloaded/3668)
**Author:** [@stephan](https://community.hivemq.com/u/stephan)\ **Replies:** 9\ **Last updated:** [May 6, 2025, 11:18am UTC](https://community.hivemq.com/t/public-broker-recently-overloaded/3668 "2025-05-06T11:18:47Z")
We worked with the Free Public MQTT Broker by HiveMQ for about 2 years now. It was reliable, fast and sufficient for the few development use cases we had. Since about 2-3 weeks we cannot connect anymore - if at all, late… --- ## [Cluster - DNS name](https://community.hivemq.com/t/cluster-dns-name/3688)
**Author:** [@lukasz5937](https://community.hivemq.com/u/lukasz5937)\ **Replies:** 1\ **Last updated:** [May 6, 2025, 10:35am UTC](https://community.hivemq.com/t/cluster-dns-name/3688 "2025-05-06T10:35:28Z")
Hi, Is it possible to use DNS names instead of IP addresses in the configuration for a Cluster? If so, how? Best regards --- ## [HiveMQ CE Broker on Raspberry Pi?](https://community.hivemq.com/t/hivemq-ce-broker-on-raspberry-pi/3742)
**Author:** [@jrdstall](https://community.hivemq.com/u/jrdstall)\ **Replies:** 1\ **Last updated:** [April 29, 2025, 5:25am UTC](https://community.hivemq.com/t/hivemq-ce-broker-on-raspberry-pi/3742 "2025-04-29T05:25:21Z")
Attempting to run HiveMQ broker on Raspberry Pi, OpenJDK 11.0.12. After executing I get a string of errors, the first is pasted below. Makes me wonder if there is a shared object compatibility issue with the underlying… --- ## [Use the HiveMQ Mqtt client without certificate validation?](https://community.hivemq.com/t/use-the-hivemq-mqtt-client-without-certificate-validation/3734)
**Author:** [@cdutz](https://community.hivemq.com/u/cdutz)\ **Replies:** 2\ **Last updated:** [April 22, 2025, 6:15am UTC](https://community.hivemq.com/t/use-the-hivemq-mqtt-client-without-certificate-validation/3734 "2025-04-22T06:15:59Z")
I am currently just doing some research on MQTT usage in a demo environment. As the certificates seem to keep on changing almost on a daily basis, I would love to simply accept all certificates until it’s time to move t… --- ## [Connection failed : Attempting MQTT connection...failed, rc=-4](https://community.hivemq.com/t/connection-failed-attempting-mqtt-connection-failed-rc-4/3732)
**Author:** [@Changdae](https://community.hivemq.com/u/Changdae)\ **Replies:** 1\ **Last updated:** [April 22, 2025, 3:33am UTC](https://community.hivemq.com/t/connection-failed-attempting-mqtt-connection-failed-rc-4/3732 "2025-04-22T03:33:01Z")
Hello, HIVEMQ SUPPORT FORUM I’m currently working on a project using an ESP32-Dev-MINI-1 and trying to connect to a HiveMQ Cloud broker, but I’m running into an issue where the MQTT connection keeps timing out. ❖ Probl… --- ## [initCertStore() fail due to there's no CA certs file read](https://community.hivemq.com/t/initcertstore-fail-due-to-theres-no-ca-certs-file-read/3730)
**Author:** [@duybao](https://community.hivemq.com/u/duybao)\ **Replies:** 1\ **Last updated:** [April 15, 2025, 7:20am UTC](https://community.hivemq.com/t/initcertstore-fail-due-to-theres-no-ca-certs-file-read/3730 "2025-04-15T07:20:11Z")
Hi all, I’m now doing as follow of this guideline for esp8266: HiveMQ Cloud When running the code, I’m successfully on wifi’s config and setDateTime() function also. But when it comes to CA certs read function, when ru… --- ## [Is there an updated client for VB6 (COM/OCX-type) that I can use with the HiveMQ broker?](https://community.hivemq.com/t/is-there-an-updated-client-for-vb6-com-ocx-type-that-i-can-use-with-the-hivemq-broker/3692)
**Author:** [@lfeche](https://community.hivemq.com/u/lfeche)\ **Replies:** 2\ **Last updated:** [April 11, 2025, 12:54pm UTC](https://community.hivemq.com/t/is-there-an-updated-client-for-vb6-com-ocx-type-that-i-can-use-with-the-hivemq-broker/3692 "2025-04-11T12:54:59Z")
Hello! I’m working on updating a project that requires connecting a process from a VB6-based system to the Node-RED or Flowfuse platform. This is also motivated by the upcoming first stable release of TwinBasic (https:/… --- ## [Connect MQTT broker with pre-signed url](https://community.hivemq.com/t/connect-mqtt-broker-with-pre-signed-url/751)
**Author:** [@Dooyoung](https://community.hivemq.com/u/Dooyoung)\ **Replies:** 21\ **Last updated:** [April 8, 2025, 6:00pm UTC](https://community.hivemq.com/t/connect-mqtt-broker-with-pre-signed-url/751 "2025-04-08T18:00:36Z")
Hi, I’m having trouble with connecting mqtt broker with pre-signed url which looks like : wss://…eu-central-1.amazonaws.com/mqtt?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=…&X-Amz-Date=20211004T170341Z&X-Amz-Sig… --- ## [Configure influxdb](https://community.hivemq.com/t/configure-influxdb/3679)
**Author:** [@liamkelly15](https://community.hivemq.com/u/liamkelly15)\ **Replies:** 1\ **Last updated:** [April 4, 2025, 7:43pm UTC](https://community.hivemq.com/t/configure-influxdb/3679 "2025-04-04T19:43:13Z")
Hi All, I am using the influxdb extension with hivemq broker How do i configure the influxdb to recieve publshed opic etc.. influxdb no longer supports native subscription ? is this extension only for broker metrics ? … --- ## [HiveMQ Bridge to TLS encrypted broker without validation](https://community.hivemq.com/t/hivemq-bridge-to-tls-encrypted-broker-without-validation/3684)
**Author:** [@MartinJensen37](https://community.hivemq.com/u/MartinJensen37)\ **Replies:** 1\ **Last updated:** [April 4, 2025, 7:39pm UTC](https://community.hivemq.com/t/hivemq-bridge-to-tls-encrypted-broker-without-validation/3684 "2025-04-04T19:39:04Z")
Hello! I’m trying to bridge my HiveMQ broker to a proprietary broker from Omron. The problematic thing is that the Omron broker uses TLS encryption without certificate validation and a simple password and username. Whe… --- ## [Connnecting HiveMQ to Homeassistant failing](https://community.hivemq.com/t/connnecting-hivemq-to-homeassistant-failing/3603)
**Author:** [@Exiatron00](https://community.hivemq.com/u/Exiatron00)\ **Replies:** 5\ **Last updated:** [April 4, 2025, 7:32pm UTC](https://community.hivemq.com/t/connnecting-hivemq-to-homeassistant-failing/3603 "2025-04-04T19:32:42Z")
Hi, I have a HiveMQ cluster. I am trying to connect my homeassistant to the HiveMQ broker but I am getting the “connection failed” error every time for no apparent reason , I am able to connect to the HiveMQ broker using… --- ## [SIM7080 can't connect to HiveMQ Cloud](https://community.hivemq.com/t/sim7080-cant-connect-to-hivemq-cloud/2535)
**Author:** [@antagonys](https://community.hivemq.com/u/antagonys)\ **Replies:** 8\ **Last updated:** [April 3, 2025, 6:31am UTC](https://community.hivemq.com/t/sim7080-cant-connect-to-hivemq-cloud/2535 "2025-04-03T06:31:10Z")
Hi there, I’ve set up a free serverless plan to test things out, but my SIM7080 module won’t connect to HiveMQ Cloud. I’ve already read the other related topics and I understand that I need the following to connect to … --- ## [ESP32 code giving error Attempting MQTT connection...failed, rc=-4](https://community.hivemq.com/t/esp32-code-giving-error-attempting-mqtt-connection-failed-rc-4/3431)
**Author:** [@muhmmad](https://community.hivemq.com/u/muhmmad)\ **Replies:** 3\ **Last updated:** [March 5, 2025, 8:41am UTC](https://community.hivemq.com/t/esp32-code-giving-error-attempting-mqtt-connection-failed-rc-4/3431 "2025-03-05T08:41:18Z")
Hello, i’m trying to use ESP32 to send sensors data to an HTML dashboard , when i run the code on esp32 it gives me the error " Attempting MQTT connection…failed, rc=-4" i used port 8884 i will send part of the code be… --- ## [HiveMQ Android Lib with AWS IoT](https://community.hivemq.com/t/hivemq-android-lib-with-aws-iot/271)
**Author:** [@solano](https://community.hivemq.com/u/solano)\ **Replies:** 5\ **Last updated:** [March 28, 2025, 10:26am UTC](https://community.hivemq.com/t/hivemq-android-lib-with-aws-iot/271 "2025-03-28T10:26:30Z")
Hello guys, can i use the hivemq android client to connect with AWS IoT Server ? or, is there a restriction to use it and needs to use amazon sdk for android? Best Virgilio Magalhaes. --- ## [MicroPython PICO W](https://community.hivemq.com/t/micropython-pico-w/3686)
**Author:** [@Kll](https://community.hivemq.com/u/Kll)\ **Replies:** 0\ **Last updated:** [March 26, 2025, 12:45pm UTC](https://community.hivemq.com/t/micropython-pico-w/3686 "2025-03-26T12:45:35Z")
a month ago i posted a ISSUE about Micro-Python and HIVEMQ TLS not work anymore \> MP v1.23 and yesterday there was heavy revisioning about network stack and dns i see progress, but will test more when that is finall… [Previous page](https://community.hivemq.com/latest.md?page=1) [Next page](https://community.hivemq.com/latest.md?page=3)