Sails.js upload huge base64 image

Question

I have a form with input which value is data URI of image like "data:image/jpg;base64,/9j xxxxxxx...".

That value is given to input when user crops image using this -> http://fengyuanchen.github.io/cropper/ So on dragend event I fill in input value with getDataURL...

On form submit, data goes to controller where I do stuff with dataURI to get extension, base64 string etc...

Then I'm writing that base64 to a file with something like:

fs.writeFile(fileRoot+filePathAndName, imageBase64, 'base64', function (err) { ...

Everything works flawlessly. But... When I use larger images (>500kb so not that large infact) I get this error:

Unable to parse HTTP body- error occurred :: [Error: EUNFNTEX: Timed out waiting for known text parameters to finish streaming their bytes into the server.]

It's interesting that it always works on localhost :( Even with huge images.

Does anyone have an idea how can I make this work? Or even better suggest a way how this could be done using skipper or a nice service...

I'm using SailsJS v0.10.5 on node v0.10.33

Answer 1

I tried everything... Client insisted to make it client side crop and I was stuck with base64 images... So I found a hacky solution...

Inside sails app: node_modules/sails/node_modules/skipper/lib/Parser

I changed prototype.parseReq.js line 167 from:

var ms = 5;

To:

var ms = 100;

So it now it looks like:

function finally_waitForTextParams() {
  // Careful: No error argument allowed in this callback!

  debug('waiting for any text params');

  // Make sure the `impatient` timeout fires no more than once
  clearTimeout(timer);

  // Take a look at all currently known text params for this Upstream,
  // then wait until all of them have been read.
  var ms = 100;
  var numTries = 0;
  async.doUntil(
    function setTimer(cb) {


      // Catch-all timeout, just in case something goes awry.
      // Should never happen, but a good failsafe to prevent holding on to
      // control forever.  It this timeout was to fire, we should error out and
      // cancel things.
      numTries++;
      if (numTries > 10) {
        return cb(new Error(
          'EUNFNTEX: Timed out waiting for known text parameters to finish ' +
          'streaming their bytes into the server.'
        ));
      }

      setTimeout(cb, ms);

      // Exponential backoff
      // (multiply ms by 2 each time, up to 500)
      ms = ms < 500 ? ms * 2 : ms;

    }

I know this is not a good solution. If anyone has better idea, please help :)