My current project involves testing a file upload feature using connect-busboy. Interestingly, I have encountered a peculiar issue when uploading PNG files - although the file gets uploaded, the content seems to be incorrect and unable to open. Upon further investigation by comparing MD5 checksums of the source and destination files, it appears that they are different. Additionally, when attempting to upload a text file with only 15 bytes of data, I find that it gets uploaded in the ./public/ directory but remains empty.
Of particular interest is the client-side code snippet:
<form method="post" enctype="multipart/form-data" action="/api/upload">
<input type="file" name="thumbnail"/>
<input type="submit"/>
</form>
On the server side:
// Some includes may have been omitted for readability
var Busboy = require("connect-busboy");
app.use(Busboy());
// Adding entries to places
app.post("/api/upload", function (req, res, next) {
req.pipe(req.busboy);
var filesNames = [];
req.busboy.on('file', function(fieldname, file, filename) {
file.on("data", function(data) {
var fstream = FS.createWriteStream('./public/' + filename,{flags: "a"});
file.pipe(fstream);
filesNames.push(filename);
fstream.on("close", function() {
console.log("Closing fstream");
});
});
});
req.busboy.on("finish", function () {
res.writeHead(200, {'Connection': 'close'});
for (var i = 0; i < filesNames.length; i++)
{
res.write(filesNames[i] + "\n");
}
console.log("busboy done");
res.end("Done..");
});
});
I have already researched various posts related to busboy, so I made sure to gather information beforehand before asking this question.
As an additional note: When I log the data, I can see the expected bytes coming through, but they do not seem to be successfully written to the file, particularly in the case of .txt files.
What could be the possible mistake I am making here?