I have used socket.io in my node.js application. When I have one my app in a browser, then new socket connection established, but when I open another tab in same browser, it also create new socket connection. why? and How Do I get socket id on my client?
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I trying to close already opened socket at server end but i didn't get any info regarding how to close.
Is there any way to close already opened TCP sockets in server using node
in server client model, due to some issue the connection got closed and unfortunately server don't know that the connection got closed, client initiated new connection then at server end - it will create new connection. so here i want to close already opened (old) connection
how to delete the old socket is my query. i want to delete it using node JS - is it possible ?
using w10/64, python 3.6, rpyc
I have a server receiving serial data and want the data to be published to any client asking for a connection.
In the server I add every client into a connection list and when detecting changes in the data publish it to all clients.
Clients send a "startListening" request to the server including ip and port. The server then opens its own connection to the client to update it with the new data.
I have an "on_disconnect" method in my servers commands class and it gets triggered when a client stops.
When the client restarts and sends a "startListening" again I get an EOFError on the server showing the clients ip/port.
How can I properly detect and close the client connection to allow for a reconnect?
Say there are 5 open tabs in a single browser, and I am using Node.js and Socket.io. The client and server exchange packets to maintain (establish) communications.
Will connection with the client be lost if of one tab is closed?
How can I determine if the user closed the browser?
Yes, socket.io establishes a new connection with every tab. You're going to want to look into using session cookies to figure out which user the current socket.io connection is communicating with.
My app is in browser, which connects to socket.io server, it works fine, but, when client disconnect for a while ( sleep for example ) , the connection will be automatically closed by server, this is the default behavior for socket.io
How can I re-establish the connection at client side without refreshing the page? is there a status that would tell me that connection is currently off at client side? so that I re-connect when necessary?
I can't rely on an event, I think I need to know if connection is on or off in an easy way locally .. well?
socket.io does reconnect automatically. To check if your socket is connected check socket.socket.connected has Boolean value. See socket.socket.connecting if you are trying to connect.
var socket = io.connect(''); //reconnects by default
console.log(socket.socket.connected);
console.log(socket.socket.connecting);
if the server is connected to a websocket client using socket.io, what are the events that would cause the client.id to change?
the server reset
the client opening a new connection
are there others, such as timeout?
When client connects to the socket.io server, then new id is generated for the connection. And there is no other place where id is generated.
Server reset, client opening new connection, timeout (and reconnection) - all of these trigger creation of new id, because actually client has to create a new connection to the socket.io server.