Socket Io Multiple Chat Rooms

Socket io s hello world is a chat app in just a few lines of code.

Socket io multiple chat rooms. Rooms also share the same socket connection like namespaces. Node socket io multiple room chat demo. Rooms are used to further separate concerns. Now that we are well acquainted with socket io let us write a chat application which we can use to chat on different chat rooms.

These channels are called rooms. This little function takes care of that. Any objects that can be encoded as json will do and binary data is supported too. How to client can join multiple room and receive 2 notifications the same time for different two rooms.

We will allow users to choose a username and allow them to chat using them. Within each namespace you can also define arbitrary channels that sockets can join and leave. A simple example of setting up dynamic rooms for socket io clients to join client js. So if multiple clients are in the same room they are all editing the same document.

Document collaboration allow users to concurrently edit a document and see each other s changes. The following examples assume you define the module. Each socket in socket io is identified by a random unguessable unique identifier socket id for your convenience each socket automatically joins a room identified by its own id. Technically a socket can be in multiple rooms but we don t want to let one client edit multiple documents at the same time so if they switch documents we need to leave the previous room and join the new room.

This comment has been minimized. This multi room chat example is part 2 in the node js socket io chat series previous chat tutorial what i failed to cover in the previous example was how to send messages broadcast information with socket io. In that case every socket in the room excluding the sender will get the event. To leave a channel you call leave in the same fashion as join both methods are asynchronous and accept a callback argument.

Sign in to view. Let s make it so that when the user types in a message the server gets it as a chat message event. Contribute to 493326889 node multiple rooms chat development by creating an account on github. The main idea behind socket io is that you can send and receive any events you want with any data you want.