INNER CODE UNIT · JavaScript

getHTTPBase64

danmindru/responsive-html-email-signature · tasks/check-for-image-url.js:94

function getHTTPBase64(url, callback) {
  // Get applicable library
  const lib = url.startsWith('https') ? https : http;
  // Initiate a git request to our URL
  const req = lib.get(url, res => {
    // Check for redirect
    if (res.statusCode >= 301 && res.statusCode < 400 && res.headers.location) {
      // Redirect
      return getHTTPBase64(res.headers.location, callback);
    }
    // Check for HTTP errors
    if (res.statusCode < 200 || res.statusCode >= 400) {
      return callback(new Error('Failed to load page, status code: ' + res.statusCode));
    }
    // Get file format
    let format;
    if (res.headers['content-type']) {
      const matches = res.headers['content-type'].match(MIME_TYPE_REGEX);

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