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Socket.IO uses a combination of WebSockets and other technologies to provide real-time communication over the web. It automatically falls back to other technologies (such as long polling) when WebSockets are not available, ensuring that the communication is always reliable.
Glad to see your interest in this topic. Socket.io works well with Codesphere. Unfortunately our documentation is still being built up and this specific document does not exist yet.
We are working really hard to continuously improve our documentation, until we have caught up we are glad to assist you personally in setting this up.