block34.js

// server/src/services/vonage/verify.js
...
const verifyRequest = (number) => {
  return new Promise((resolve, reject) => {
    // get the Vonage client
    const vonageClient = getVonageClient();
    const brand = 'Vonage APIs';

    // Create a verification request for the given number
    vonageClient.verify.request({number, brand}, (err, result) => {
      if (err) {
        reject(false);
      } else {
        // return the request id which will be used when verifying the code
        resolve(result.request_id);
      }
    });
  });
};

const checkCode = (code, request_id) => {
  return new Promise((resolve, reject) => {
    // get the Vonage client
    const vonageClient = getVonageClient();
    
    // here pass both the request id and the code sent by the student
    vonageClient.verify.check({
      request_id,
      code
    }, (err, result) => {
      if (err) {
        reject(false);
      } else {
        // if code is correct we authenticate the student
        if (result.status === '0') {
          resolve(true);
        } else {
          reject(false);
        }
      }
    });
  })
}
...