How to do repeated requests until one succeeds without blocking in node?

Question

I have a function that takes a parameter and a callback. It\'s supposed to do a request to a remote API and get some info based on the parameter. When it gets the info, it needs

Answer 1

You could try something along the following lines. I'm writing a general idea, you should replace trySomething with your HTTP request.

function keepTrying(onSuccess) {
  function trySomething(onSuccess, onError) {
    if (Date.now() % 7 === 0) {
      process.nextTick(onSuccess);
    } else {
      process.nextTick(onError);
    }
  }
  trySomething(onSuccess, function () {
    console.log('Failed, retrying...');
    keepTrying(onSuccess);
  });
}

keepTrying(function () {
  console.log('Succeeded!');
});

I hope this helps.