1106259 - mozTCPSocket/arraybuffer doesn't work on Desktop, Android

Status: RESOLVED DUPLICATE of bug 1057556

(Firefox for Android Graveyard :: Web Apps (PWAs), defect)

Description

[Felix E. Klee]

Browsers used for testing:

  * Nightly 37.0a1 (2014-11-28) on Windows 7 x64

  * Possibly stable Firefox on Windows 7 x64, which I had installed in parallel and
    whose runtime was possibly used for the desktop app.

  * Firefox Beta 34.0 on Android 4.3 (ARM, x86)

App types tested:

  * Firefox OS (in 2.0 emulator on desktop)

  * Desktop

  * Android

Code to enter inside of the development console of any app privileged to use `navigator.mozTCPSocket` (e.g. my app "Trigger"):

    cmd = 'GET / HTTP/1.1\n\n';
    arr = cmd.split('').map(function (x) { return x.charCodeAt(0); })
    data = (new Uint8Array(arr)).buffer;
    socket = navigator.mozTCPSocket.open('mozilla.org', 80, {binaryType: 'arraybuffer'});
    socket.onopen = function () { console.log('Open'); socket.send(data); };
    socket.onerror = function (o) { console.log('Error', o); };
    socket.ondata = function (o) { console.log('Data', o); };

Firefox OS 2.0 is the *only* tested platform where everything works as expected! The connection is opened, the request is sent, and the HTTP server responds with data:

    function socket.ondata()
    "Open"
    "Data" Object { _type: "data", _target: Object, _data: ArrayBuffer }

For Android and Desktop apps, the connection is opened, the request is sent, but there is no response:

    function socket.ondata()
    "Open"

I tried testing again today after deinstalling stable and upgrading from yesterday's to today's nighlty. However, I was notable to connect to the desktop app for testing. There were a lot of instabilities. At one point, I lost the WebIDE menu entry.

On Android, I didn't yet try the latest Fennec.

In short: It could be that the bug is already fixed. If that's the case, then sorry for bothering you.

Comment 1

[Justin D'Arcangelo [:justindarc]]

I'm also seeing this issue in the v2.2 simulator (desktop).

Comment 2

[Felix E. Klee]

Just tested it with Firefox for Android Nightly 37.0a1 (2015-01-05): fennec-37.0a1.multi.android-arm-2.apk

Result: mozTCPSocket/arraybuffer doesn't work, i.e. the socket is opened but there is no response to the GET command.

This bug breaks my apps Theta Control and Trigger. Already I got a complaint from a user:

https://www.facebook.com/groups/RicohTHETAUsers/permalink/1561362024081988/

Comment 4

[Felix E. Klee]

How is this a duplicate?

Note that it worked in the past, for example with Firefox 31 on Android. Also note that the app is privileged.

Comment 5

[Marco Castelluccio [:marco]]

It isn't a duplicate. Bug 1079648 is about extending mozTCPSocket support to normal web content.

Comment 6

[Andrew Sutherland [:asuth] (he/him)]

Based on the example code, I believe this is probably bug 1057556 and doing socket.send(data, byteOffset, byteLength) instead of send(data) will make things work.  Please dupe to bug 1057556 if that indeed does fix the problem.

Comment 7

[Marco Castelluccio [:marco]]

Andrew, bug 1057556 is working for me now.

Comment 8

[Felix E. Klee]

@asuth Thanks! `socket.send(data, 0, data.byteLength)` is a workaround. The bug is still there, just replicated it in the 2.2 simulator.

Comment 9

[Tim Guan-tin Chien [:timdream] (please needinfo)]

Is this a dup to bug 1057556 instead?

Comment 10

[Andrew Sutherland [:asuth] (he/him)]

Duping for closure and all previous analysis suggesting this was bug 1057556 (which was fixed a while back by bug 885982).