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Socket.IO is a library that enables low-latency, bidirectional and event-based communication between a client and a server. It is built on top of the WebSocket protocol and provides additional guarantees like fallback to HTTP long-polling or automatic reconnection.
The first step is to install the Java Socket.IO client with Gradle. We must remember adding the internet permission to AndroidManifest. xml . Now we can use Socket.IO on Android!
Socket.IO is a framework that makes it easy to implement Socket and the available for iOS, Android, back-end and front-end. In this article you will find some code in Swift (iOS) and Javascript (Web) for implementing the client and NodeJS for implementing the back-end.
Conclusion. I think Socket.io is a very useful piece of technology and is incredibly relevant today in spite of the popular view that widespread support for WebSockets makes it redundant. I would recommend that it be used for highly interactive applications. Its namespacing in particular is its strongest point.
When I try to use Socket.IO with PhoneGap I get this error:
(on iOS where socket.io should be supported)
Origin null is not allowed by Access-Control-Allow-Origin.
This is because my app is served via file:// protocol. What can I do to get around this?
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