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WebSocket Server

in JavaScript • 8 years, 5 months
I try to stream video data to the server to control 100 ws2812 leds.
I tried to work with 1byte for each pixel, so the current limitations do not disturb.

But i get no stable connection. Always if i send between 25 and 60 messages i get:

WebSocket is already in CLOSING or CLOSED state.

Would be really good so solve this problem first ;) If i couldn't get a reliable connection, i can't use that websocket implementation...

Please have a look at it. Thanks.
WebSocket Server

in JavaScript • 8 years, 5 months
Great to hear from you. Thank you for your response!

Now it seems to work 95% :)

Some of my tests:

[WS] "hallo welt" [WS] "hallo welt 123" [WS] "123" [WS] "hallo welt 123" [WS] "[object Object]" [WS] "test" [WS] "{\"room\":\"room\",\"msg\":\"message\"}" 1: [WS] "\x14" 2: [WS] "PUM\x1F\x1D\x00\x02O^M\x02\x1E\x15MUO\x1F\n\x1C\x1E\x13\b\nO\x0Fe\x8Ah\"\xC9\x8F\x13\x00\xBB\xE0\aO\xEB\xB5JP\xA6\xE0\x05\x00\xE5\xAD\x05Q\xAE\xADR\x00\xA4\xEA\x1BQ\xA8\xE8\r\x00\xB4\x94%Nw\x83y5U\xF1\x16!\x1A\xA1Cl\x05\xEC\x16#U\xAF[#\x04\xE4[tU\xEE\x1C=\x04\xE2\x1E+U\xFE;0=\x18=\xDAF:O\xB5Ru\x1F\xE0\x1FjR\xB5" [WS] "{\"room\":\"room\",\"msg\":\"message\"}" [WS] "{\"room\":\"room\",\"msg\":\"message\"}" [WS] "{\"room\":\"room\",\"msg\":\"message\"}"

The named lines (1,2) should be also the same message as before. My conclusion is, that i still get that "unreadable" data, if i wait a little bit.

Start the WebSocket and send a Message -> OK
Send more messages -> OK
Wait a minute and send one message -> Unreadable Data
send more messages -> Sometimes OK, timesomes unreadable
send more messages -> everything OK

So always if i wait a little bit it seems that the next data package can't processed successfully.

If i wait for 5-10 Minutes and try to send a message from Chrome:

WebSocket is already in CLOSING or CLOSED state.

I would be really happy if you could check that again :)
I will also try the capacitor for the ESP8266.

Thank you!

Edit: I looked at the ws.js file. Why you don't allow to send data bigger then 125 character? How can i send more than 125? I need to send more than 300 characters.
WebSocket Server

in JavaScript • 8 years, 5 months

Next post...

WebSocket Server

in JavaScript • 8 years, 5 months

Hi.

I tried that code, but i just recieve unreadyable data at the server.

ws.on('message',function(msg) { print("[WS] "+JSON.stringify(msg)); });

The result in the web-ide is like that:

[WS] "\xC7\xD3\x00\x00\xC7\xD3\x00\x00\xC7\xD3"
[WS] ""
[WS] "\x1A\t\x00\x00\x1A\t\x00\x00\x1A\t"
[WS] ""
[WS] ""
[WS] "/<\x00\x00/<\x00\x00/<"
[WS] "bl\x1C\x00bl\x1C\x00bl"
[WS] "R\x9E\xEF\x00R\x9E\xEF\x00R\x9E"
[WS] "<C\x00\x00<C\x00\x00<C"
[WS] "\xE9\xBC\x00\x00\xE9\xBC\x00\x00\xE9\xBC"

That should be always the same message...

ws.send("hallo welt");

What is wrong with the code? I run it with the pico VERSION 1v85 in combination with the esp8266.
I hope someone can help me with that.

In addition the connection interrupt all the time. Is there an easy solution for a stable connection? I want to send a lot of data from client to the server.

FullCode:

Serial2.setup(9600, {    rx: A3,    tx: A2}); 
var wifi = require("ESP8266WiFi").connect(Serial2, function(err) {
    if (err) throw err;
    wifi.reset(function(err) {
        if (err) throw err;
        console.log("Connecting to WiFi");
        wifi.connect("SSID", "12345", function(err) {
            if (err) throw err;

            var server = require('ws').createServer(onPageRequest);
            server.listen(8000);
            server.on("websocket", function(ws) {
                ws.on('message',function(msg) {
                  print("[WS] "+JSON.stringify(msg));
                });
                ws.on('open', function() {
                  ws.send("Connected to server!");
                });
                ws.send("Hello from Espruino!");
            });
        });
    });
});
var page = '<html><head><meta charset="utf-8"><title>WebSocket Client Test...</title></head><body><script>var ws;setTimeout(function(){';
page += 'ws = new WebSocket("ws://" + location.host + "/my_websocket", "text");';
page += 'ws.onmessage = function (event) { console.log("MSG: "+event.data); };';
page += 'setTimeout(function() { ws.send("Hello to Espruino!"); }, 1000);';
page += '},1000);</script></body></html>';
page += '</script></body></html>';
function onPageRequest(req, res) {
    res.writeHead(200, {        'Content-Type': 'text/html'    });
    res.end(page);
}

In Browserconsole (Chrome) i entered "ws.send(hallo welt)".

Thanks.

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