Mqtt connection problem (socket error on client <unknown>, disconnecting.)

[Daniele Carvalho]

Hello,

I have installed mosquitto broker on VPS and I installed Certbot for Let's Encrypt Certificates form https://www.digitalocean.com/community/tutorials/how-to-install-and-secure-the-mosquitto-mqtt-messaging-broker-on-centos-7. 

As a c client we are using ATSAMD21-XPRO + WINC1500 development kit. 

My base code is the mqtt_chat_example project from Atmel Studio 7. 

I have a problem with my mqtt connection it constatly says 'socket error on client <unknown>, disconnecting.' 

mqtt connect ECONNRESET error 104 Connection reset by peer.

My config file:

------------------------------- mosquitto.conf ----------------------------------

allow_anonymous false

password_file /etc/mosquitto/passwd

#mqtt default port no encryption

listener 1883 localhost

# mqtt port encrypted

listener 8883

require_certificate false

cafile /etc/letsencrypt/live/mqtt.easyin.com.pt/chain.pem

certfile /etc/letsencrypt/live/mqtt.easyin.com.pt/cert.pem

keyfile /etc/letsencrypt/live/mqtt.easyin.com.pt/privkey.pem

tls_version tlsv1.2

#websocket port

listener 8083

protocol websockets

cafile /etc/letsencrypt/live/mqtt.easyin.com.pt/chain.pem

certfile /etc/letsencrypt/live/mqtt.easyin.com.pt/cert.pem

keyfile /etc/letsencrypt/live/mqtt.easyin.com.pt/privkey.pem

# second websocket port

listener 8085

protocol websockets

cafile /etc/letsencrypt/live/mqtt.easyin.com.pt/chain.pem

certfile /etc/letsencrypt/live/mqtt.easyin.com.pt/cert.pem

keyfile /etc/letsencrypt/live/mqtt.easyin.com.pt/privkey.pem

------------------------------------------------------------------------------------------------

What is the problem? 

Thank you in advance. 

Kind regards, 

Daniele

[Ravi Subramanian]

Danielle

For some reason, the broker is disconnecting your connection.  Are you using a secure connection port (8883) for connection or a normal one (1883)

Regards

Ravi

[Daniele Carvalho]

I'm using a secure connection on port 8883 but i'm redirecting the domain that I use as the broker to my vps.