safari browser support

[aliunco]

I've written this simple code:

var primus = Primus.connect('http://185.24.139.62:7070');
    var register = primus.channel('reg');
    register.write(JSON.stringify({
      "jsonrpc": "2.0",
      "method" : "register-request",
      "params" : "1234",
      "id"     : "1"
    })); 

all browsers work fine, except safari! and IOS browsers (webView)
this is the response message:
[Error] WebSocket connection to 'ws://185.24.139.62:7070/primus/?_primuscb=LH8SfNk' failed: WebSocket is closed before the connection is established.
close (primus.js:2801)
emit (primus.js:236)
opening (primus.js:2733)
emit (primus.js:257)
reconnect (primus.js:2791)
emit (primus.js:236)
reconnect (primus.js:1883)
emitter (primus.js:143)
emit (primus.js:238)
delay (primus.js:629)
tickedtock (primus.js:927)

is there anything wrong with my code?