node.js - Strange behavior from Busboy -

i'm having strange problem busboy. i'm uploading file powershell using invoke-restmethod remote server written in node.js. code works without problem if use stream function. accepts binary data , writes file onto local drive without hiccup. however, gives me "missing boundary error" when use busboy. resolves issue, pass along boundary invoke-restmethod. rids of boundary error, busboy not fire file event @ all. i've been scratching head , trying figure out 2 days , solution seems elude me. same code working fine couple of weeks ago, not anymore. i'm not sure if changes has been made work environment weird.

stream code: works fine

server code

fs = require('fs'); server = restify.createserver(); server.post('/file',restify.queryparser(),uploadfile);     function uploadfile(req, res, next) {        var wstream = fs.createwritestream("x.jpg");     req.pipe(wstream); } 

powershell

$upload= invoke-restmethod -uri "http://localhost:8088/file" -method post -infile $imagepath -contenttype 'multipart/form-data' 

busboy code: throws missing boundary error

server code

fs = require('fs'); server = restify.createserver(); server.post('/file',restify.queryparser(),uploadfile);     function uploadfile(req, res, next) {        var filestream = new busboy({ headers: req.headers });   } 

powershell

$upload= invoke-restmethod -uri "http://localhost:8088/file" -method post -infile $imagepath -contenttype 'multipart/form-data' 

powershell code boundary set , modified node.js code. "on file" not called.

powershell

$begin = @" ---blockboundary--- "@  $end = @" ---blockboundary--- "@  add-content 'requestbodysavedtofile' $begin $imagedata = get-content $imagepath -raw -encoding byte add-content 'requestbodysavedtofile' $imagedata -encoding byte add-content 'requestbodysavedtofile' $end  $url = "http://localhost:8088/file" $contenttype = "multipart/form-data; boundary=$begin" $upload= invoke-restmethod -uri $url1 -method post -infile "requestbodysavedtofile" -contenttype $contenttype 

server code

fs = require('fs'); server = restify.createserver(); server.post('/file',restify.queryparser(),uploadfile);     function uploadfile(req, res, next) {        var filestream = new busboy({ headers: req.headers });                            req.pipe(filestream);             filestream.on('file', function(fieldname, file, filename, encoding, mimetype) {         console.log('file [' + fieldname + ']: filename: ' + filename + ', encoding: ' + encoding + ', mimetype: ' + mimetype);          res.end();           }); } 

any idea causing this? appreciate input.

the reason there no file events because request data not correctly formatted according multipart/form-data (you're @ least missing appropriate headers each part).