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Compatibility

Usage Docs/Compatibility.md

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Here is the compatibility table with the Node.js server:

<table> <tr> <th rowspan="2">Swift Client version</th> <th colspan="3">Socket.IO server version</th> </tr> <tr> <td align="center">2.x</td> <td align="center">3.x</td> <td align="center">4.x</td> </tr> <tr> <td align="center">v15.x</td> <td align="center"><b>YES</b></td> <td align="center"><b>YES</b><sup>1</sup></td> <td align="center"><b>YES</b><sup>2</sup></td> </tr> <tr> <td align="center">v16.x</td> <td align="center"><b>YES</b><sup>3</sup></td> <td align="center"><b>YES</b></td> <td align="center"><b>YES</b></td> </tr> </table>

[1] Yes, with <code><a href="https://socket.io/docs/v4/server-initialization/#allowEIO3">allowEIO3: true</a></code> (server) and .connectParams(["EIO": "3"]) (client):

Server

js
const { createServer } = require("http");
const { Server } = require("socket.io");

const httpServer = createServer();
const io = new Server(httpServer, {
  allowEIO3: true
});

httpServer.listen(8080);

Client

swift
SocketManager(socketURL: URL(string:"http://localhost:8080/")!, config: [.connectParams(["EIO": "3"])])

[2] Yes, <code><a href="https://socket.io/docs/v4/server-initialization/#allowEIO3">allowEIO3: true</a></code> (server)

[3] Yes, with .version(.two) (client):

swift
SocketManager(socketURL: URL(string:"http://localhost:8080/")!, config: [.version(.two)])

See also: