akiross/starlettews.py

## starlettews.py
from starlette.applications import Starlette
from starlette.responses import HTMLResponse
from starlette.websockets import WebSocket
from jinja2 import Template
import uvicorn


template = """\
<!DOCTYPE HTML>
<html>
<head>
    <script type = "text/javascript">
        function runWebsockets() {
            if ("WebSocket" in window) {
                var ws = new WebSocket("ws://localhost:8000/ws");
                ws.onopen = function() {
                    console.log("Sending websocket data");
                    ws.send("Hello From Client");
                };
                ws.onmessage = function(e) {
                    alert(e.data);
                };
                ws.onclose = function() {
                    console.log("Closing websocket connection");
                };
            } else {
                alert("WS not supported, sorry!");
            }
        }
    </script>
</head>
<body><a href="javascript:runWebsockets()">Say Hello From Client</a></body>
</html>
"""


app = Starlette()


@app.route('/')
async def homepage(request):
    return HTMLResponse(Template(template).render())


@app.websocket_route('/ws')
async def websocket_endpoint(websocket):
    await websocket.accept()
    # Process incoming messages
    while True:
        mesg = await websocket.receive_text()
        await websocket.send_text(mesg.replace("Client", "Server"))
    await websocket.close()


if __name__ == '__main__':
    uvicorn.run(app, host='0.0.0.0', port=8000)
	from starlette.applications import Starlette
	from starlette.responses import HTMLResponse
	from starlette.websockets import WebSocket
	from jinja2 import Template
	import uvicorn


	template = """\
	<!DOCTYPE HTML>
	<html>
	<head>
	<script type = "text/javascript">
	function runWebsockets() {
	if ("WebSocket" in window) {
	var ws = new WebSocket("ws://localhost:8000/ws");
	ws.onopen = function() {
	console.log("Sending websocket data");
	ws.send("Hello From Client");
	};
	ws.onmessage = function(e) {
	alert(e.data);
	};
	ws.onclose = function() {
	console.log("Closing websocket connection");
	};
	} else {
	alert("WS not supported, sorry!");
	}
	}
	</script>
	</head>
	<body><a href="javascript:runWebsockets()">Say Hello From Client</a></body>
	</html>
	"""


	app = Starlette()


	@app.route('/')
	async def homepage(request):
	return HTMLResponse(Template(template).render())


	@app.websocket_route('/ws')
	async def websocket_endpoint(websocket):
	await websocket.accept()
	# Process incoming messages
	while True:
	mesg = await websocket.receive_text()
	await websocket.send_text(mesg.replace("Client", "Server"))
	await websocket.close()


	if __name__ == '__main__':
	uvicorn.run(app, host='0.0.0.0', port=8000)