I need to dyanmically change the server to which the client connects. So, in my case the client if first connect to a server with:
var $socket = io.connect("//serverA:5656");
and this successfully fires the event code:
$socket.on('connect', function(data) {
alert('socket connected with id ' + $socket.id);
});
however, if later on the code I need to change the server to connect to with:
$socket = io.connect("//serverB:8900");
the connect event is not fired even though it seems to generate a new value for $socket.id but any emit from server to this socket does not go through.
I tried with several options for the new server connection such as:
$socket.disconnect(true);
$socket = io.connect("//serverB:8900");
$socket.io.reconnect();
$socket.disconnect();
$socket.removeAllListeners('connect');
io.sockets = {};
$socket = io.connect("//serverB:8900");
$socket = io.connect("//serverB:8900", {'forceNew': true});
$socket = io.connect("//serverB:8900", {'force new connection': true});
None of this (and any combination of them) worked out.
io.connect
creates a new socket object. You create your first socket object when you call io.connect("//serverA:5656")
. Then, you set a connect
event listener on that socket.
You create a totally new socket when you call io.connect("//serverB:8900")
. This new socket object doesn't know anything about the first socket you made previously. Importantly, it does not have a connect
event listener.
You need to call .on('connect', ...)
again, on the second socket object, to make it have a connection
listener as well. Generally, every time you call io.connection
, you need to make a subsequent call to on
to attack a connection
listener. You can put this operation in a single function to make it easier:
function makeSocketWithListener(server) {
var socket = io.connect(server);
socket.on("connect", function() {
alert('socket connected with id ' + socket.id);
});
return socket;
}
var $socket = makeSocketWithListener("//serverA:5656");
...
var $socket = makeSocketWithListener("//serverB:8900");
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.