Any dependency on Android APIs?

[rpastorvargas]

I've test your plugin in two android devices, one tablet with a 4.1.1 version number, and a phone (S3) with a 4.3 version. In the first case, the sample (ws://echo.websocket.org) is runing ok, but in the second not (it seems that makes the create call, but no open event is called). Maybe there are any dependency on the android version? I think no, but i want to be sure.
Other thing is related to the loading of websocket.js file. In the Web Console (logcat) is shown one error:
E/Web Console(17298): Uncaught ReferenceError: require is not defined at file:///android_asset/www/js/websocket.js:29

The error is presented in both case (tablet and phone)

Thank you for your support. You're doing a great job!!!

[knowledgecode]

Thanks to your contribution.

It's about second thing, I know the problem. It's too early to access the plugin. You should do it after the "deviceready" event is fired. Almost every plugins are the same.
Please reference the following url:
http://cordova.apache.org/docs/en/3.4.0/cordova_events_events.md.html#deviceready

It's about first thing, I don't know at this time. I tried it by an emulator because I don't have a physical device of Android 4.3. But worked well.
Which framework are you using, Cordova or PhoneGap? The framework that I tried was the latest version of Cordova (3.4.0).

[rpastorvargas]

Hi, thank you for your answer. I rewrite the code for the deviceready event to load the websocket.js (using jquery) after the event is called (I'm using phonegap 3.4.0-0.19.7):

onDeviceReady: function() {
app.receivedEvent('deviceready');
alert("Device ready");
console.log("WS_Sample: deviceready() event called");
// Load Websockets js
$.getScript( "js/websocket.js" )
.done(function( script, textStatus ) {
console.log( "WS_Sample: loaded websockets.js" + textStatus );
app.testWS(); // Test the echo web sockets on ws://echo.websocket.org
})
.fail(function( jqxhr, settings, exception ) {
console.log("WS_Sample: load error with websockets.js" + exception );
});
}

and i got the same error (logcat details bellow):

03-06 12:45:23.560 24345 24345 D CordovaLog: file:///android_asset/www/js/index.js: Line 38 : WS_Sample: deviceready() event called: es.uned.scc.related.mobile.ws.sample

03-06 12:45:23.560 24345 24345 I Web Console: WS_Sample: deviceready() event called:38: es.uned.scc.related.mobile.ws.sample

03-06 12:45:23.650 24345 24345 E ViewRootImpl: sendUserActionEvent() mView == null: es.uned.scc.related.mobile.ws.sample

03-06 12:45:23.675 24345 24345 D CordovaLog: file:///android_asset/www/js/index.js: Line 46 : WS_Sample: load error with websockets.jsReferenceError: require is not defined: es.uned.scc.related.mobile.ws.sample

03-06 12:45:23.680 24345 24345 I Web Console: WS_Sample: load error with websockets.jsReferenceError: require is not defined:46: es.uned.scc.related.mobile.ws.sample

Related to the first questions, the problem is with the 4.3 version on the Samsung S3 device (with 4.1 runs well on my tablet)

Regards,
rafael

[knowledgecode]

Hi,

There is no need for load the websocket.js by yourself. This is the role of PhoneGap (Plugins are loaded automatically by PhoneGap before "deviceready" is fired).
You just write the following code:

onDeviceReady: function() {
    app.receivedEvent('deviceready');
    alert("Device ready");
    console.log("WS_Sample: deviceready() event called");
    app.testWS(); // Test the echo web sockets on ws://echo.websocket.org
}

If you will get the same or similar error, you may have failed to install the plugin. First let's solve this problem, then let's see other.

[rpastorvargas]

Hi, i remove the reference to the websocket.js file from the index.html (main) and the index.js (not loaded now). I have not problem qith the "require", but the open function is never called (i try with 'protocol' argument and without it). Now, i dont have any errors related to the app, but nothing seems to be running... (in the Table, 4.1 version, run wells and using a 4.3 emulator is going wll too). Really, i'm vert fustrated but i suppose is a problem related to the phone (galaxy s3 qith 4.3 android version).

Bellow is my code. Sorry for bothering you so much... and thank you for your help/support

Regards,
rafael

index.js

onDeviceReady: function() {
app.receivedEvent('deviceready');
alert("Device ready");
console.log("WS_Sample: deviceready() event called");
app.testWS();
},

...
testWS: function(){
alert('Creating web sockets');
try {
var ws = new WebSocket('ws://echo.websocket.org','[ws]');
} catch (error){
alert("error: " + error);
}
ws.onopen = function () {
console.log('onopen');
messages = document.getElementById("messages");
messages.innerHTML = messages.innerHTML + "\nOn open";
alert("open");
this.send('Message to ws server, get an echo?');
};

    ws.onmessage = function (event) {
        console.log(event.data);    // will be "hello"
        messages = document.getElementById("messages");
        messages.innerHTML = messages.innerHTML + "\nReceived Echo Data: " + event.data;
        this.close();
    };

    ws.onerror = function () {
        console.log('error occurred!');
        messages = document.getElementById("messages");
        messages.innerHTML = messages.innerHTML + "\nError";
    };

    ws.onclose = function (event) {
        console.log(event.code);
        console.log(event.reason);
        messages = document.getElementById("messages");
        messages.innerHTML = messages.innerHTML + "\nClose, code: " + event.code + ", reason: " + event.reason;
    };
}

index.html

PhoneGap

Connecting to Device

Device is Ready

<textarea cols="80" rows="10" id="messages">Messages:</textarea>

    <script type="text/javascript" src="cordova.js"></script>
    <script type="text/javascript" src="js/index.js"></script>
    <script type="text/javascript">
        app.initialize();
    </script>
</body>

[knowledgecode]

Hi,

I assumed that a native WebSocket was supported by only Android 4.4 devices. But, I found that some of Android 4.3 or lower devices had it, and that it had shown strange behavior. I guess that it is own implementation by makers. This plugin gives priority to a native WebSocket. So, if your device(galaxy S3) has it, it is used. I modified the plugin to clobber it in Android 4.3 or lower. Would you try the new version(0.5.2) whether your problem is resolved?

[rpastorvargas]

Thank you very much. It's running ok the demo...

Related to the websocket implementation on Galaxy S3 (4.3), i was testing before with no plugin in phonegap and no websocket object are defined.

Again, thank you very much and congratulations for your great work!!!

regards