google chrome - Angular Thermal Print not working with HTTP instead of HTTPS

Question

I am using an angular package called ng-thermal-print to take print using a thermal printer from a browser. It was working fine with HTTPS. Due to the time delay added by SSL, we are forced to remove the SSL, there for HTTPS to HTTP. After this transition, this package is not working.

The following code is used for requesting the printer.

requestUsb() {
this.usbPrintDriver.requestUsb().subscribe(
    (result) => {
      this.printService.setDriver(this.usbPrintDriver);
      this.status=true;
    },
    (error) => {
      console.log(error);
    }
);}

Error it shows :

TypeError: Cannot read property 'requestDevice' of undefined
    at t._subscribe (29.9ec6f4575860c6b8cf91.js:1)
    at t._trySubscribe (main.6c8ec2ba6b274c6dff1d.js:1)
    at t.subscribe (main.6c8ec2ba6b274c6dff1d.js:1)
    at l.requestUsb (29.9ec6f4575860c6b8cf91.js:1)
    at Object.handleEvent (29.9ec6f4575860c6b8cf91.js:1)
    at Object.handleEvent (main.6c8ec2ba6b274c6dff1d.js:1)
    at Object.handleEvent (main.6c8ec2ba6b274c6dff1d.js:1)
    at ni (main.6c8ec2ba6b274c6dff1d.js:1)
    at main.6c8ec2ba6b274c6dff1d.js:1
    at HTMLButtonElement.<anonymous> (main.6c8ec2ba6b274c6dff1d.js:1)

question from:https://stackoverflow.com/questions/65948922/angular-thermal-print-not-working-with-http-instead-of-https

Answer 1

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