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WebSocket API

The WebSocket API (WebSockets)

The WebSocket API is an advanced technology that makes it possible to open a two-way interactive communication session between the user’s browser and a server. With this API, you can send messages to a server and receive event-driven responses without having to poll the server for a reply.

Note: While a WebSocket connection is functionally somewhat similar to standard Unix-style sockets, they are not related.

Interfaces

WebSocket The primary interface for connecting to a WebSocket server and then sending and receiving data on the connection.

CloseEvent The event sent by the WebSocket object when the connection closes.

MessageEvent The event sent by the WebSocket object when a message is received from the server.

Further reading