1

我有以下代码,用于基于此处组合不同端点的 Sanic hello world:

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 

路线“/”和“/html”工作正常,但是

http://0.0.0.0:8000/feed

产生:

Error: Invalid websocket request

和“/html2”呈现页面正常,但不登录到控制台,显示在调试器中:

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

我应该更改或添加什么来制作一个可行的 websocket 端点,它也可以很好地与 http 端点配合使用?

4

1 回答 1

5

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://。换句话说,

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)
于 2019-07-06T06:44:06.937 回答