Hi guys,

Very good answer how to force library to work using DNS

I configured test.mosquitto.org connection with SSL and TLS. All works fine.
But... my client want to use MQTT server with SNI where qdnAddress looks like: ag9zaegu2mrwvrq5-atas.iot.eu-central-1.amazonaws.com I have bad feeling about that.

Does TSEND_C librarry support this kind of addressing? How could I establish connection to this server?

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Split from LMQTT library Problem with QDN address.

 P.S. on connection I get states #7002->#7003->#9000.

What does it mean erorr  #9000?

mindego

Hi guys,

Very good answer how to force library to work using DNS

I configured test.mosquitto.org connection with SSL and TLS. All works fine.
But... my client want to use MQTT server with SNI where qdnAddress looks like: ag9zaegu2mrwvrq5-atas.iot.eu-central-1.amazonaws.com I have bad feeling about that.

Does TSEND_C librarry support this kind of addressing? How could I establish connection to this server?

 

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Split from LMQTT library Problem with QDN address.

I spend a lot of time to collect all knowledge for secure connection to MQTT server.
So all steps are here:

1. Enable protection on your project Security settings ->Settings-> Protect this project

2. Add certificates: Security settings -> Security features->Certificate manager

2.1. Server certificate need load into Trusted certificates and root certificates

2.2. User certificate combined with private key in .P12 package load in Device certificates

3. Add certificates into PLC configuration. Protection&Security->Certificate manager->Checkbox use global security settings for certificate manager

3.1 Device certificates choose Device certificate (.p12)

3.2 Certificates of the partner devices. REMEMBER ID

4. If you want use domain address in MQTT library you should set PLC DNS server Advanced configuration -> DNS configuration example 8.8.8.8 (google public DNS server)

5.Compile configuration and load to PLC

6.IMPORTANT: If you are using certificates, you should set correct PLC time.

7. If you are using DNS domain name on MQTT libraryIMPORTANT set HWid=0. Otherwise it doesn't work.

8. MQTT Connparams:

hwid:=0

qdnAddress:=test.mosquitto.org.

port:=8883 //for security connection

tls:

enableTls:=true;

validateServeridentity=true;

brokerCert:='id of CA from root certificates list'

clientCert:=' id of .p12 from certificates Device certificate list'

Here you are ;)

What type of PLC are you using? etc. S7-1200