Free up to 1MM monthly messages. No credit card required.
WebSockets provide new protocol between client and server which runs over a persistent TCP connection. Through this open connection, bi-directional, full-duplex messages can be sent between the single TCP socket connection (simultaneously or back and forth). Because it is an independent TCP-based protocol, it doesn’t ideally require HTTP tunneling (similar to Netflix and other streaming services), allowing for simplified communication when sending messages.
WebSockets come after many other technologies that allow servers to send information to the client. Web applications that use Comet/Ajax, push/pull and long polling all do this over HTTP. Other than handshaking the Upgrade Header, WebSockets is independent from HTTP.
So why would you want to use WebSockets (or something like it)? It’s not really about WebSockets; it is about what you are trying to get down to the TCP layer, send and receive small data packages, and make it reliable and available across a number of devices.
Through the TCP connection, WebSockets can be used as a base for bi-directional real-time functionality. The ability to push a signal to a device as quickly as possible makes WebSockets one of the many solutions to push data between two devices. It’s the blueprint for creating real-time applications on both web and mobile (pretty much anything with a server and a client).
The WebSockets API and Protocol have both been standardized by the IETF and W3C, and have established themselves as a standard for real-time functionality in web, desktop, and mobile apps. Some advantages of WebSockets include:
However, the designation of WebSockets as the standard for data push and real-time communication is somewhat of a misnomer around the web as it is described today. Independent of some open-source solutions, WebSockets are just a part of the puzzle when developing real-time applications. There are a slew of operational issues a developer may run into when using WebSockets as their real-time solution, especially as the app scales and the user base grows:
Overall, WebSockets are a powerful tool for adding real-time functionality to a web or mobile application. Check out how you can take WebSockets to the next level with PubNub.
A roundtable discussion led by PubNub’s COO, Casey Clegg, exploring the topics of what it means to be human in a virtual world.
Dr. Joe Kvedar, Chair of the Board for the American Telemedicine Association, joins our COO, Casey Clegg, to discuss why...
Today, we are glad to announce that we are currently in the process of implementing ISO-27001 security standards.