Golang Paho MQTT over Websocket - amazon-web-services

Question

Hey I was trying to connect to AWS IoT Core via Golang Paho MQTT client. I tried the normal MQTT connection which was working without problems. Next I wanted to try the connection via MQTT over Websocket but could not find anything relating that in the Paho.Mqtt docs. How do I make the Websocket connection? I could post my code from my normal MQTT connection if necessary.
Edit, here is my code:
package main
import (
"crypto/tls"
"fmt"
"time"
MQTT "github.com/eclipse/paho.mqtt.golang"
)
type Message struct {
message string
}
/*var f MQTT.MessageHandler = func(client MQTT.Client, msg MQTT.Message) {
fmt.Printf("TOPIC: %s\n", msg.Topic())
fmt.Printf("MSG: %s\n", msg.Payload())
}*/
func main() {
cer, err := tls.LoadX509KeyPair("cd5a04e9fd9a094326c9ee0cdc1e1f7b2e3510a9e106968683d333a2a4344ca7-certificate.pem.crt",
"./cd5a04e9fd9a094326c9ee0cdc1e1f7b2e3510a9e106968683d333a2a4344ca7-private.pem.key")
check(err)
cid := "ClientID"
// AutoReconnect option is true by default
// CleanSession option is true by default
// KeepAlive option is 30 seconds by default
connOpts := MQTT.NewClientOptions() // This line is different, we use the constructor function instead of creating the instance ourselves.
connOpts.SetClientID(cid)
connOpts.SetMaxReconnectInterval(1 * time.Second)
connOpts.SetTLSConfig(&tls.Config{Certificates: []tls.Certificate{cer}})
host := "a2to6mbspmaw82-ats.iot.eu-west-1.amazonaws.com"
port := 443
brokerURL := fmt.Sprintf("wss://%s:%d", host, port)
connOpts.AddBroker(brokerURL)
mqttClient := MQTT.NewClient(connOpts)
if token := mqttClient.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
var message = "message from lap"
for message != "bye" {
token := mqttClient.Publish("some_topic", 0, false, message)
token.Wait()
message = "bye"
}
}
func check(err error) {
if err != nil {
panic(err)
}
}

Answer 1

From the Eclipse Paho GoLang page
The type of connection required is specified by the scheme of the
connection URL set in the ClientOptions struct, for example:
tcp://mqtt.eclipseprojects.io:1883 - connect to mqtt.eclipseprojects.io on port 1883 using plain TCP
ws://mqtt.eclipseprojects.io:1883 - connect to mqtt.eclipseprojects.io on port 1883 using WebSockets
tls://mqtt.eclipseprojects.io:8883 - connect to mqtt.eclipseprojects.io on port 8883 using TLS (ssl:// and tcps:// are
synonyms for tls://)
The second entry in the list suggests you just pas in the URL with the right schema ( ws:// or probably wss://)