如何让Sanic响应http和ws？

Question

我有以下基于此处组合不同端点的 Sanic hello world 代码：

代码是：

from sanic import Sanic
from sanic import response
from sanic.websocket import WebSocketProtocol

app = Sanic()

@app.route("/")
async def test(request):
    return response.json({"hello": "world"})


@app.route('/html')
async def handle_request(request):
    return response.html('<p>Hello world!</p>')

@app.websocket('/feed')
async def feed(request, ws):
    while True:
        data = 'hello!'
        print('Sending: ' + data)
        await ws.send(data)
        data = await ws.recv()
        print('Received: ' + data)

@app.route('/html2')
async def handle_request(request):
  return response.html("""<html><head><script>
         var exampleSocket = new WebSocket("wss://0.0.0.0:8000/feed",      "protocolOne");
         exampleSocket.onmessage = function (event) {
         console.log(event.data)};</script></head><body><h1>Hello socket!</h1><p>hello</p></body></html>""")

app.run(host="0.0.0.0", port=8000)
# app.run(host="0.0.0.0", port=8000, protocol=WebSocketProtocol)    # ws

路由“/”和“/html”工作正常，但是

http://0.0.0.0:8000/feed

产生：

Error: Invalid websocket request

和“/html2” 可以很好地呈现页面，但不会记录到控制台，在调试器中显示：

Firefox can’t establish a connection to the server at wss://0.0.0.0:8000/feed.

我应该更改或添加哪些内容才能使可行的 websocket 端点也能很好地与 http 端点配合使用？

Answer 1

在客户端 html 中使用 0.0.0.0 作为端点没有任何意义，而且您没有使用 SSL，因此您想使用 ws:// 而不是 wss://。也就是说，

from sanic import Sanic
from sanic import response
from sanic.websocket import WebSocketProtocol

app = Sanic()

@app.websocket('/feed')
async def feed(request, ws):
    while True:
        data = 'hello!'
        print('Sending: ' + data)
        await ws.send(data)
        data = await ws.recv()
        print('Received: ' + data)

@app.route('/html2')
async def handle_request(request):
  return response.html("""<html><head><script>
         var exampleSocket = new WebSocket("ws://" + location.host + '/feed');
         exampleSocket.onmessage = function (event) {
         console.log(event.data)};</script></head><body><h1>Hello socket!</h1><p>hello</p></body></html>""")

app.run(host="0.0.0.0", port=8000)

如何让Sanic响应http和ws？

How to have Sanic respond with http and ws?

python

websocket

sanic