1  import news, asyncdispatch, asynchttpserver
 2  
 3  var server = newAsyncHttpServer()
 4  proc cb(req: Request) {.async.} =
 5    echo "cb ", req
 6    if req.url.path == "/ws":
 7      var ws = await newWebsocket(req)
 8      await ws.send("Welcome to simple echo server")
 9      while ws.readyState == Open:
10        let packet = await ws.receivePacket()
11        await ws.send(packet)
12    await req.respond(Http200, "Hello World")
13  
14  asyncCheck server.serve(Port(9001), cb)
15  
16  proc sendMsg() {.async.} =
17      var ws = await newWebSocket("ws://localhost:9001/ws")
18      await ws.send("hi")
19      while ws.readyState == Open:
20          let str = await ws.receiveString()
21          echo "received ", str
22  
23  asyncCheck sendMsg()
24  runForever()