Socket io has two components.
Socket io check if room exists.
What i do is to get the room based on the id of the socket i get all the clients inside the room and check if there is an user inside the room.
Socket io is a real time application framework based on node js which has a wide range of applications including instant messaging notification and message push real time analysis and other scenarios.
Chat app is a software that enables the messages to be sent and received.
I have to check for now if my rooms are empty which is an hassle because io adapter rooms is an array of json meaning you have to count properties.
Websocket originated from the growing demand for real time communication in web development compared with http based polling which greatly saves network bandwidth and reduces.
No change on the client side.
With socket io 1 2 0 my empty rooms do get deleted automatically.
Both components have nearly identical apis.
Have to follow the below mentioned steps on the server side.
It works on every platform browser or device focusing equally on reliability and speed.
A javascript library for real time web applications that enables real time bi directional communication between web clients and servers.
To leave a channel you call leave in the same fashion as join both methods are asynchronous and accept a callback argument.
In socket io 2 every user socket create room with the name as the socket id.
If there is no user inside the room the room or the user doesn t exist and the user is not connected.
The room is destroyed once.
A client side library that runs in the browser and a server side library for node js.
When a client joins a room either the room exists or it has to be created.
Redis would probably be fastest especially if you don t need a durability guarantee most of the game can be played out using redis in memory datastore which is probably gonna be faster than writing to any disk in the world.
Socket io enables real time bidirectional and event based communication.
The room can be specified by a specific chat id or a meeting id.
What type of database is the best for storing array or object like data on hold database node js sockets.
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.
In this article i ll be showing you how to build a web chat application using react express socket io and node js.
