Geting error when trying to call API (Content Security Policy)

Question

Trying to start get function from deployed website and get this error:

Refused to connect to 'https://www.themealdb.com/api/json/v2/xxx/search.php?s=apple' because it violates the following Content Security Policy directive: "default-src 'self' http://*.google-analytics.com http://www.googletagmanager.com https://*.google.com https://*.google-analytics.com https://*.googletagmanager.com https://*.gstatic.com https://*.googleapis.com https://authedmine.com https://az743702.vo.msecnd.net https://sentry.io ws://localhost:4200". Note that 'connect-src' was not explicitly set, so 'default-src' is used as a fallback.

While running website on localhost server everything was working fine.

Added this meta tag to my index.html and still getting the same error message.

<meta http-equiv="Content-Security-Policy" content="default-src *; style-src 'self' http://* 'unsafe-inline'; script-src 'self' http://* 'unsafe-inline' 'unsafe-eval'">

Answer 1

So, at first I added meta tag for my index.html page and it didin't worked. After that I created interceptor, to add headers to my get function. More about interceptors you can read at https://angular.io/api/common/http/HttpInterceptor

Still not working. Then I figured out that in my server.ts file there is these lines of code:

app.use(helmet());
app.use(helmet.contentSecurityPolicy({
  directives: AppConfig.cspDirectives
}));

. More info about helmet: https://www.npmjs.com/package/helmet

Then in my app.module providers section there is assigned {provide: APP_CONFIG, useValue: AppConfig} configuration.

Here is how app.config.ts file looks like now:

import {InjectionToken} from '@angular/core';

export let APP_CONFIG = new InjectionToken('app.config');

export const AppConfig: any = {
  cspDirectives: {
    defaultSrc: [
      '\'self\'',
      'http://*.google-analytics.com',
      'http://www.googletagmanager.com',
      'https://*.google.com',
      'https://*.google-analytics.com',
      'https://*.googletagmanager.com',
      'https://*.gstatic.com',
      'https://*.googleapis.com',
      'https://authedmine.com',
      'https://az743702.vo.msecnd.net',
      'https://sentry.io',
      'https://www.themealdb.com/',
      'ws:<my-webpage-url>',
    ],
    styleSrc: [
      '\'self\'',
      '\'unsafe-inline\'',
      'https://*.googleapis.com'
    ],
    scriptSrc: [
      '\'self\'',
      '\'unsafe-inline\'',
      'http://*.googletagmanager.com',
      'https://*.google-analytics.com'
    ]
  }
};