# mqttClient Service Connect error? **URL:** \ **Category:** Uncategorized\ **Created:** [April 28, 2021, 10:01am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093 "2021-04-28T10:01:12Z")\ **Posts on this page:** 20\ **Page:** 3
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [April 30, 2021, 10:58am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/46 "2021-04-30T10:58:31Z")
I don’t know, that is why you need to get evidence to prove which part is going wrong ---
**Author:** ![gavinoimparato1](https://avatars.discourse-cdn.com/v4/letter/g/f475e1/32.png) [@gavinoimparato1](https://mangoh.discourse.group/u/gavinoimparato1)\ **Post date:** [May 3, 2021, 8:45am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/49 "2021-05-03T08:45:51Z")
Hi @jyijyi I modified the configuration file of Mosquitto (verstion 2 need a configuration): ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/1/1a780f52f0ff60ed7b436831a81e9ce796697656.png) And now I see: ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/3/3d0870d032f78312ed58af979f53125eac80353c.png) ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/d/d4202bf160a37fbb0b0004644c547598c87dfa82.png) So the broker is running well on the 1883 port, right? ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [May 3, 2021, 10:25am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/50 "2021-05-03T10:25:12Z")
Have you captured wireshark to understand the traffic? ---
**Author:** ![gavinoimparato1](https://avatars.discourse-cdn.com/v4/letter/g/f475e1/32.png) [@gavinoimparato1](https://mangoh.discourse.group/u/gavinoimparato1)\ **Post date:** [May 3, 2021, 10:44am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/51 "2021-05-03T10:44:03Z")
I see it: ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/1/1dd54652f338236a564f488a37c902cc395e10f7.png) ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/2/2a020a4f6b6d75a7724b72019fda2245e120359a.png) I didn’t understand what I should see and where on wireshark… ---
**Author:** ![gavinoimparato1](https://avatars.discourse-cdn.com/v4/letter/g/f475e1/32.png) [@gavinoimparato1](https://mangoh.discourse.group/u/gavinoimparato1)\ **Post date:** [May 3, 2021, 10:53am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/52 "2021-05-03T10:53:50Z")
okay sorry, if I run **sudo wireshark** I see: ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/4/49df9df47c8442feef0cda20f6839ba9bd83113a.png) So I can see USB interface ---
**Author:** ![gavinoimparato1](https://avatars.discourse-cdn.com/v4/letter/g/f475e1/32.png) [@gavinoimparato1](https://mangoh.discourse.group/u/gavinoimparato1)\ **Post date:** [May 3, 2021, 10:59am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/53 "2021-05-03T10:59:19Z")
Isn’t it local adress? ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/b/b31f1a403a087f6cbeebeaaa016b3a0ec1f8f225.png) At this point I should see 0.0.0.0 of 1883 mosquitto, but I can’t see it. Am I in error? ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [May 3, 2021, 11:04am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/54 "2021-05-03T11:04:50Z")
You can only monitor port 1883 ---
**Author:** ![gavinoimparato1](https://avatars.discourse-cdn.com/v4/letter/g/f475e1/32.png) [@gavinoimparato1](https://mangoh.discourse.group/u/gavinoimparato1)\ **Post date:** [May 3, 2021, 11:06am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/55 "2021-05-03T11:06:04Z")
okay, but I can’t see it, so my VM doesn’t see this port? ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [May 3, 2021, 11:16am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/56 "2021-05-03T11:16:45Z")
The mqtt should be sent out when app start ---
**Author:** ![gavinoimparato1](https://avatars.discourse-cdn.com/v4/letter/g/f475e1/32.png) [@gavinoimparato1](https://mangoh.discourse.group/u/gavinoimparato1)\ **Post date:** [May 3, 2021, 11:17am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/57 "2021-05-03T11:17:58Z")
I’m capturing TCP packets but I can’t see anything on 192.168.2.3 or port 1883… ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/6/63820e1fbbc6ccb5e4227b4d777d539c82f2dd26.png) ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [May 3, 2021, 11:21am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/58 "2021-05-03T11:21:37Z")
You can ping the interface and see if you can capture anything ---
**Author:** ![gavinoimparato1](https://avatars.discourse-cdn.com/v4/letter/g/f475e1/32.png) [@gavinoimparato1](https://mangoh.discourse.group/u/gavinoimparato1)\ **Post date:** [May 3, 2021, 11:22am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/59 "2021-05-03T11:22:46Z")
![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/6/67c5c7162897a047906bae92163a7b77f926e1aa.png) Seems not ping any 1883 ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [May 3, 2021, 11:27am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/60 "2021-05-03T11:27:07Z")
I mean just ping, and see any ping packet captured, this can ensure your wireahark is ok ---
**Author:** ![gavinoimparato1](https://avatars.discourse-cdn.com/v4/letter/g/f475e1/32.png) [@gavinoimparato1](https://mangoh.discourse.group/u/gavinoimparato1)\ **Post date:** [May 3, 2021, 11:28am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/61 "2021-05-03T11:28:28Z")
Okay, but in all the packets captured I can’t see 1883 interface… ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [May 3, 2021, 11:30am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/62 "2021-05-03T11:30:44Z")
Then maybe your wireshark is not capturing correctly ---
**Author:** ![gavinoimparato1](https://avatars.discourse-cdn.com/v4/letter/g/f475e1/32.png) [@gavinoimparato1](https://mangoh.discourse.group/u/gavinoimparato1)\ **Post date:** [May 3, 2021, 11:32am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/63 "2021-05-03T11:32:03Z")
yes…but I cannot make it capture correctly. At the same time I think that mosquitto is running, so really I can’t understand why socket errror. It makes me crazy ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [May 3, 2021, 11:52am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/64 "2021-05-03T11:52:59Z")
You need to fix the wireshark first ---
**Author:** ![gavinoimparato1](https://avatars.discourse-cdn.com/v4/letter/g/f475e1/32.png) [@gavinoimparato1](https://mangoh.discourse.group/u/gavinoimparato1)\ **Post date:** [May 3, 2021, 11:54am UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/65 "2021-05-03T11:54:55Z")
Sorry, does exist a guide? I can’t find it ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [May 3, 2021, 12:10pm UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/66 "2021-05-03T12:10:09Z")
You can search in google … ---
**Author:** ![gavinoimparato1](https://avatars.discourse-cdn.com/v4/letter/g/f475e1/32.png) [@gavinoimparato1](https://mangoh.discourse.group/u/gavinoimparato1)\ **Post date:** [May 3, 2021, 12:22pm UTC](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/67 "2021-05-03T12:22:27Z")
Anyway mosquitto is in running, so I don’t think that this could be make some other available, I really can’t understand why this socket error [Previous page](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093.md?page=2) [Next page](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093.md?page=4)