add a new websocket2 package without breaking changes to the iris API. It implements the gobwas/ws library (it works but need fixes on determinate closing connections) as suggested at: https://github.com/kataras/iris/issues/1178

Former-commit-id: be5ee623b7d030bd9e03a1a2f320ead975ef2ba8

websocket2/websocket.go

@@ -0,0 +1,69 @@
+/*Package websocket provides rich websocket support for the iris web framework.
+
+Source code and other details for the project are available at GitHub:
+
+   https://github.com/kataras/iris/tree/master/websocket
+
+Example code:
+
+
+	package main
+
+	import (
+		"fmt"
+
+		"github.com/kataras/iris"
+		"github.com/kataras/iris/context"
+
+		"github.com/kataras/iris/websocket"
+	)
+
+	func main() {
+		app := iris.New()
+
+		app.Get("/", func(ctx context.Context) {
+			ctx.ServeFile("websockets.html", false)
+		})
+
+		setupWebsocket(app)
+
+		// x2
+		// http://localhost:8080
+		// http://localhost:8080
+		// write something, press submit, see the result.
+		app.Run(iris.Addr(":8080"))
+	}
+
+	func setupWebsocket(app *iris.Application) {
+		// create our echo websocket server
+		ws := websocket.New(websocket.Config{
+			ReadBufferSize:  1024,
+			WriteBufferSize: 1024,
+		})
+		ws.OnConnection(handleConnection)
+
+		// register the server's endpoint.
+		// see the inline javascript code in the websockets.html,
+		// this endpoint is used to connect to the server.
+		app.Get("/echo", ws.Handler())
+
+		// serve the javascript built'n client-side library,
+		// see websockets.html script tags, this path is used.
+		app.Any("/iris-ws.js", func(ctx context.Context) {
+			ctx.Write(websocket.ClientSource)
+		})
+	}
+
+	func handleConnection(c websocket.Connection) {
+		// Read events from browser
+		c.On("chat", func(msg string) {
+			// Print the message to the console
+			fmt.Printf("%s sent: %s\n", c.Context().RemoteAddr(), msg)
+			// Write message back to the client message owner:
+			// c.Emit("chat", msg)
+			c.To(websocket.Broadcast).Emit("chat", msg)
+		})
+	}
+
+*/
+package websocket