# How to configure serverHost, serverPort & sslConfig to connect by SSL to 8883? **URL:** \ **Category:** HiveMQ Client Library\ **Created:** [December 5, 2022, 2:19am UTC](https://community.hivemq.com/t/how-to-configure-serverhost-serverport-sslconfig-to-connect-by-ssl-to-8883/1658 "2022-12-05T02:19:29Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![scott](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.hivemq.com/scott/32/503_2.png) [@scott](https://community.hivemq.com/u/scott)\ **Post date:** [December 5, 2022, 2:19am UTC](https://community.hivemq.com/t/how-to-configure-serverhost-serverport-sslconfig-to-connect-by-ssl-to-8883/1658/1 "2022-12-05T02:19:29Z")
Having read some docs and all examples I could find, I do not see a very simple example of connecting by SSL to 8883. It was very simple to create the Android client to connect to the broker at [mosquito.org](http://mosquito.org), port 1883. But using credentials that I generated there, when trying to connect to port 8883 fails and this log message is seen: MacAddressUtil com.example.tryhive W Failed to find a usable hardware address from the network interfaces; using random bytes: f4:51:aa:f9:c6:c8:9d:fa I am just following simple examples for client creation: mqttClient = MqttClient.builder() .useMqttVersion3() .identifier(“MyID”) .serverHost("test.mosquitto… .serverPort(8883) .sslConfig() .keyManagerFactory(managers.kmf) .trustManagerFactory(managers.tmf) .applySslConfig() .buildAsync() The key manager and trust manager factories, built with the credentials created at [mosquito.org](http://mosquito.org) work to make a TLS connection using the Paho MqttAndroidClient in a different Android app - should I post those here as well anyway? I tried to use a similar serverHost as done with Paho client: … .serverHost("ssl://test.mosquitto… .serverPort(8883) … But that results in an exception being thrown in Netty. Please share any sample code that works for you or lessons you learned wrt this using HiveMQ yourself. ---
**Author:** ![scott](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.hivemq.com/scott/32/503_2.png) [@scott](https://community.hivemq.com/u/scott)\ **Post date:** [December 5, 2022, 2:21am UTC](https://community.hivemq.com/t/how-to-configure-serverhost-serverport-sslconfig-to-connect-by-ssl-to-8883/1658/2 "2022-12-05T02:21:44Z")
FYI: I was disallowed to post as a new user because of having more than “two links”, so I truncated with ellipses this: .serverHost(“[test.mosquitto.org](http://test.mosquitto.org)”) and this: .serverHost(“ssl://test.mosquitt.org”) ---
**Author:** ![scott](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.hivemq.com/scott/32/503_2.png) [@scott](https://community.hivemq.com/u/scott)\ **Post date:** [December 5, 2022, 2:26am UTC](https://community.hivemq.com/t/how-to-configure-serverhost-serverport-sslconfig-to-connect-by-ssl-to-8883/1658/3 "2022-12-05T02:26:53Z")
Also interesting to note is that when I first ran the non-secure client, I inadvertently left in the uri used with Paho Client, so this: .serverHost(“tcp://test.mosquitto.org”) .serverPort(1883) And that as well caused the connection to fail with the same MacAddressUtil log above: MacAddressUtil com.example.tryhive W Failed to find a usable hardware address from the network interfaces; using random bytes: f4:51:aa:f9:c6:c8:9d:fa That is why I didn’t clutter this post with the code that creates the Key and Trust Manager Factories passed to the sslConfig() - it seems that the error is somewhere else. ---
**Author:** ![scott](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.hivemq.com/scott/32/503_2.png) [@scott](https://community.hivemq.com/u/scott)\ **Post date:** [December 5, 2022, 3:06am UTC](https://community.hivemq.com/t/how-to-configure-serverhost-serverport-sslconfig-to-connect-by-ssl-to-8883/1658/4 "2022-12-05T03:06:20Z")
To note: there are 14 pages of results for “HiveMQ client” at stackoverflow and I have scanned them all, reading very many, to no avail. ---
**Author:** ![scott](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.hivemq.com/scott/32/503_2.png) [@scott](https://community.hivemq.com/u/scott)\ **Post date:** [December 5, 2022, 8:38pm UTC](https://community.hivemq.com/t/how-to-configure-serverhost-serverport-sslconfig-to-connect-by-ssl-to-8883/1658/5 "2022-12-05T20:38:30Z")
Suspecting an issue in Netty, I’ve tried using their latest release to no avail: ```auto dependencies { implementation 'com.hivemq:hivemq-mqtt-client:1.3.0' implementation(platform("io.netty:netty-bom:4.1.85.Final")) ``` Still no connection by SSL to 8883 :-{ ---
**Author:** ![scott](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.hivemq.com/scott/32/503_2.png) [@scott](https://community.hivemq.com/u/scott)\ **Post date:** [December 5, 2022, 11:02pm UTC](https://community.hivemq.com/t/how-to-configure-serverhost-serverport-sslconfig-to-connect-by-ssl-to-8883/1658/6 "2022-12-05T23:02:15Z")
Still cannot connect with HiveMQ client to any mosquitto secure ports: 8883, 8884, or 8885. So I tried to go in through the websocket interface with this: ```auto implementation 'com.hivemq:hivemq-mqtt-client-websocket:1.3.0' ``` and of course adding to the MqttClient.builder(): ```auto .webSocketWithDefaultConfig() ``` Then it connects without .sslConfig() to mosquitoo port 8080 But then enabling SSL, connections fail to ports 8081, 8090 & 8091 I know that this seems to point more to an error in my implementation of the KeyManagerFactory and/or the TrustManagerFactory, but the identical code to build them is used in an app that uses the Paho client, and secure connection succeeds. ---
**Author:** ![Daria\_H](https://avatars.discourse-cdn.com/v4/letter/d/dfb087/32.png) [@Daria\_H](https://community.hivemq.com/u/Daria_H)\ **Post date:** [December 14, 2022, 12:02pm UTC](https://community.hivemq.com/t/how-to-configure-serverhost-serverport-sslconfig-to-connect-by-ssl-to-8883/1658/7 "2022-12-14T12:02:51Z")
Hi @scott , It is great to see your interest in MQTT and HiveMQ, welcome to the community! Have you already tried out [the example illustrating how to connect test.mosquitto.org](https://github.com/hivemq/hivemq-mqtt-client/blob/master/src/test/java/com/hivemq/client/example/Mqtt3SmokeTest.java) with and without TLS, with and without certificates? For the instructions on how to prepare necessary certificates please refer to the [README](https://github.com/hivemq/hivemq-mqtt-client/blob/master/src/test/resources/testkeys/mosquitto/README). I hope this helps Kind regards, Dasha from HiveMQ team