node.js - Sending a buffer to the client to download -


i have buffer download on node.js server dropbox. i'd send buffer (or convert file , send it) client, , have begin downloading on client side. missing here?

var client = dboxapp.client(req.session.dbox_access_token);  client.get(req.body.id, function(status, data, metadata) {     // do here? })

here's angular (uses promise). when console.log(response object includes buffer).

function(id, cloud){   return $http.post('/download/'+cloud, {id: id}).then(function(response){     console.log(response)   }, function(response) {     return $q.reject(response.data);   }) }

it looks dbox module you're using has stream() option better suited file downloads. should make call metadata file's mime type. example:

var middleware = function(req, res, next) {     var client = dboxapp.client(req.session.dbox_access_token);     var file = req.body.id;      client.metadata(file, function(status, reply) {         res.setheader('content-disposition', 'attachment; filename=' + file);         res.setheader('content-type', reply.mime_type);         client             .stream(file)             .pipe(res)             .on('error', next);     }); };

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