Packages websocket and websocketjs provide high- and low-level bindings for the browser's WebSocket API (respectively).
The high-level bindings offer a Dial function that returns a regular net.Conn. It can be used similarly to net package.
conn, err:=websocket.Dial("ws://localhost/socket") // Blocks until connection is established.iferr!=nil{// handle error } buf:=make([]byte, 1024) n, err=conn.Read(buf) // Blocks until a WebSocket frame is received.doSomethingWithData(buf[:n]) iferr!=nil{// handle error } _, err=conn.Write([]byte("Hello!")) // ...err=conn.Close() // ...The low-level bindings work with typical JavaScript idioms, such as adding event listeners with callbacks.
ws, err:=websocketjs.New("ws://localhost/socket") // Does not block.iferr!=nil{// handle error } onOpen:=func(ev*js.Object){err:=ws.Send([]byte("Hello!")) // Send a binary frame.// ...err:=ws.Send("Hello!") // Send a text frame.// ... } ws.AddEventListener("open", false, onOpen) ws.AddEventListener("message", false, onMessage) ws.AddEventListener("close", false, onClose) ws.AddEventListener("error", false, onError) err=ws.Close() // ...nhooyr.io/websocket- WebSocket library with WebAssembly support.