TypeError: Cannot call method 'push' of undefined

I’m guessing that this is actually a dicer bug, but I’m seeing this in my logs (causing server restarts):

  TypeError: Cannot call method 'push' of undefined
      at Dicer._write (/home/app/dojo/node_modules/busboy/node_modules/dicer/lib/Dicer.js:103:17)
      at doWrite (_stream_writable.js:221:10)
      at writeOrBuffer (_stream_writable.js:211:5)
      at Dicer.Writable.write (_stream_writable.js:180:11)
      at Multipart.write (/home/app/dojo/node_modules/busboy/lib/types/multipart.js:227:24)
      at Busboy._write (/home/app/dojo/node_modules/busboy/lib/main.js:67:16)
      at doWrite (_stream_writable.js:221:10)
      at writeOrBuffer (_stream_writable.js:211:5)
      at Busboy.Writable.write (_stream_writable.js:180:11)
      at write (_stream_readable.js:583:24)
      at flow (_stream_readable.js:592:7)
      at _stream_readable.js:560:7
      at process._tickDomainCallback (node.js:459:13)

I can’t reproduce this in tests though.

Here are the headers:

{ host: '[redacted]',
    accept: '*/*',
    'accept-encoding': 'gzip, deflate',
    'accept-language': 'en-us',
    'content-type': 'multipart/form-data; charset=utf-8; boundary=0xKhTmLbOuNdArY',
    cookie: '[redacted]',
    'user-agent': '[redacted]/122 CFNetwork/672.0.8 Darwin/14.0.0',
    'x-client-build': '122',
    'x-client-identifier': 'iOS',
    'x-client-version': '2.4',
    'x-forwarded-for': '[redacted]',
    'x-forwarded-port': '80',
    'x-forwarded-proto': 'http',
    'content-length': '1449',
    connection: 'close' }

These don’t seem to be sufficient to reproduce the error in tests though. I don’t have an example body either, unfortunately.

Using busboy 0.2.1.

Thanks!

[dmitrig01]

I’m getting this occasionally too. Here’s the code I’m using:

    var busboy = new Busboy({ headers: req.headers }), data = {}, buffer;
    busboy.on('file', function(fieldname, file, filename, encoding, mimetype) {
        var bufs = [];
        file.on('data', function(d) { bufs.push(d); });
        file.on('end', function() {
            buffer = Buffer.concat(bufs);
        });
    });
    busboy.on('field', function(name, val) {
        data[name] = val;
    });
    busboy.on('end', function() {
        // use buffer
    });
    req.pipe(busboy);

[cainus]

Thanks for this! it’s been running in production for me for a couple of days now (under pretty heavy load), and everything looks great.