Contents
What is a Socket namespace?
A Namespace is a communication channel that allows you to split the logic of your application over a single shared connection. Possible use cases: you want to create an admin namespace that only authorized users have access to, so the logic related to those users is separated from the rest of the application.
How do I use Socket.IO in chat?
Add Socket.io library The io object emits events and listens to events. In the above snippet, to connect to a socket, you are using io. on event listen and passing the socket as the argument to the callback function. Whenever a client connects to the chat app’s server, it will run the message in the console.
What is Socket.IO protocol?
Socket.IO is a transport protocol that enables real-time bidirectional event-based communication between clients (typically, though not always, web browsers) and a server. The official implementations of the client and server components are written in JavaScript.
Is Socket.IO expensive?
Even in terms of network traffic, Socket.IO is way more expensive. In fact, with plain WebSockets the browser may need to run just two requests: The GET request for the HTML page. The UPGRADE connection to WebSocket.
Does socket.io use HTTP?
Also, a socket.io server will attach to an HTTP server so it can serve its own client code through /socket.io/socket.io.js .
How many rooms can Socket.IO handle?
1 Answer. socket.io rooms are a lightweight data structure. They are simply an array of connections that are associated with that room. You can have as many as you want (within normal memory usage limits).
Why are there rooms and namespaces in Socket.IO?
Namespaces allow you to create different contexts for Socket.IO to work in. Rooms allow you to group client connections inside of those contexts. There can be rooms within namespaces, which helps to organize the code but there cannot be namespaces inside of rooms. So namespace is a top level segmentation and rooms is a lower level one.
Which is the default connection event in Socket.IO?
In Socket.IO, the connection event on the default connection and connection event on a /xxx namespace are different. For example, if you had a chat and comment system on your site and wanted both to be real time, you could namespace each. This allows you to build an entire Socket.IO application that lives only in its own context.
Which is an example of using Socket.IO?
An example for the latter would be a large client app where different modules, perhaps developed separately (e.g. third-party), each using socket.io independently, are being used in the same app and want to share a single network connection.
Is there a simple chat server in C?
It is language specific to C, but you can get a solid understanding of basic networking functions. There is no simple chat server application. Beside that it helps you with nothing for network programming because it is not used anymore because of security problems in the protocol. You may want to check this link too.