Empty File received

[CafaAsbl]

Hi, i got a problem with writing data.

I'm trying to upload a package from my server to my client. Event is received, but, my final file is empty. My code :

Server Side :

    ss(socket).on('UploadPackageFile', function(stream) {
        console.log('Package prepared...');
        fs.createReadStream(LAST_PACKAGE).pipe(stream);
    });

Client Side :

    this.on('makeUpdate', function() {
        Core.handleInfo('Start Stream to download the new package.');
        var stream = ss.createStream();

        ss(io).emit('UploadPackageFile', stream);
        stream.pipe(fs.createWriteStream(PACKAGE_FILE));
    });

Think i miss something, but i can't see what.

Any idea ?

Thx in advance for help

[CafaAsbl]

Hi all,

I have some news, but not working fully.

In my test case, i've reverse the logic. I emit a new stream on the server and the client get it. It's working at least for ~5%, after the stream stop, without any error.

I don't understand why this is not working when i try with my first code. And i don't understand why my stream stop at 4 or 5% of transfer.

Finaly, i got no any error. All of operation seems to work normaly.

Thx for help in advance !

Server Side :

    ss(socket).emit('package', stream, { size: PACKAGE_SIZE });
    var read = fs.createReadStream(LAST_PACKAGE);
    read.pipe(stream);

    read.on('error', function(err) {
        console.log('Error : ' + err);
    });
    read.on('data', function(chunk) {
        console.log(chunk);
    });
    read.on('finish', function() {
        console.log('Finish');
    });
    read.on('end', function() {
        console.log('end');
    });
    read.on('pause', function() {
        console.log('pause');
    });

Client Side :

    ss(socket).on('package', function(stream, data) {
        var write = fs.createWriteStream(PACKAGE_FILE);
        stream.pipe(write);
        var size = 0;

        stream.on('data', function(chunk) {
            console.log('chunky chunky');
            size += chunk.length;
            var percent = Math.floor((size / data.size) * 100);
            updateProgress(percent);
        });

        stream.on('end', function() {
            console.info('ending');
        });

        stream.on('finish', function() {
            console.info('Finish !');
        });

        stream.on('error', function(err) {
            console.error('error');
        });

        stream.on('pause', function() {
            console.log('pause');
        });
    });

[jhead]

I'm running into the same issue with a similar setup. Were you able to figure out why you're receiving an empty file? I've tried emitting the stream from both server and client side. I only have this issue between two Node.js applications, not between a browser and Node.js server.

[OlehRb]

Hi, @jhead I am facing very similar problem: everything works fine when i send file from browser to nodejs server and vice versa, but when I send file from one nodejs server to another one I get an empty file. Moreover, none of events doesn't shoot (e.g. 'data', 'end', 'finish', 'error').

So, were you able to figure this out?

[jhead]

Hey @OlehRb, it's been a while so I can't remember exactly but I think it ended up being an issue on my end and not with socket.io-stream. I had created some middleware for every socket event and it was interfering with the socket.io-stream events. You might try using Chrome dev tools to inspect the websocket frames to see what's going on between your client and server.

[vupibi]

This one is old, but i just ran into this one and found out that you should set: ss.forceBase64 = true; on both sides. That solves the problem with the empty files. Took me an hour but you can read it there (https://www.npmjs.com/package/socket.io-stream): "You have to set forceBase64 option true when using the library with socket.io v0.9.x."