basic_fiber_wesocket.go

package main

import 
  "github.com/gofiber/fiber"
  "github.com/gofiber/websocket"
)

func main() {
  app := fiber.New()

  app.Use(func(c *fiber.Ctx) {
    c.Locals("Hello", "World")
    c.Next()
  })
  
  app.Get("/ws", websocket.New(func(c *websocket.Conn) {
    fmt.Println(c.Locals("Hello")) // "World"
    
    // Websocket stuff
    for {
      mt, msg, err := c.ReadMessage()
      if err != nil {
        log.Println("read:", err)
        break
      }
      log.Printf("recv: %s", msg)
      err = c.WriteMessage(mt, msg)
      if err != nil {
        log.Println("write:", err)
        break
      }
    }
  }))

  app.Listen(3000) // Listen on ws://localhost:3000/ws
}