Question

我正在尝试Flask-Sockets。过去添加了对蓝图的支持，这是我真正需要的。

from flask import Flask, request, abort, redirect, url_for, render_template, make_response, Response, jsonify, session
import json

#Importing blueprints
from play import play, play_socket

app = Flask(__name__)
sockets = Sockets(app)
app.register_blueprint(play, url_prefix=r"/play")
sockets.register_blueprint(play_socket, url_prefix=r"/play")

@sockets.route('/echo')
def echo_socket(ws):
    while not ws.closed:
        message = ws.receive()
        response = json.dumps({"Message":message,"Response":"Message received"})
        ws.send(response)

因此，在JavaScript中连接websocket并将端点设置为'echo'（即var ws = new WebSocket("ws://HOST:PORT/"+"echo")）可以很好地工作。我可以发送消息，然后他们就会反弹回来。

但是，当我想将此功能移动到蓝图时（在蓝图play_socket中，它不再起作用。假设我在javascript中将端点更改为'/ status_ping'：

@play_socket.route('/status_ping')
def ping(ws):
    while not ws.closed:
        message = ws.receive()
        response = json.dumps({"Message":message,"Response":"Message received"})
        ws.send(response)

websocket已从客户端成功连接，我可以通过在print("HERE")中插入一个简单的def ping(socket):或其他内容来确认这一点，但之后会立即关闭，使其无效。

我发现如果我将while not ws.closed:循环的主体移动到标题上方（复制它），它就会起作用。但是，我不能使用它，因为我需要套接字将数据从服务器推送到客户端。执行此while循环时似乎出错了。由于某种原因，套接字立即关闭。将while not ws.closed:更改为while True:无效。

我试图尽可能地解决问题，但如果您需要更多信息，请告诉我。

编辑：蓝图的代码示例

from flask import Flask, request, abort, redirect, url_for, render_template, make_response, Response, jsonify, session, current_app
import sys
sys.path.append('../')
from flask_sockets import Sockets
import json
import time
api_blueprint = Blueprint('api_blueprint', __name__)

@sockets.route('/update_status')
def echo_socket(ws):
    message = ws.receive()
    while not ws.closed:
        ws.send(json.dumps({"data":message}))
        time.sleep(1)
    if ws.closed:
        session.clear()
        print("session cleared")
sockets = Sockets(current_app)
sockets.register_blueprint(api_blueprint, url_prefix=r"/api")

run.py上下文可用的主app文件以此开头：

if __name__ == "__main__":
    from gevent import pywsgi
    from geventwebsocket.handler import WebSocketHandler
    server = pywsgi.WSGIServer(('0.0.0.0', 15080), app, handler_class=WebSocketHandler)
    print(server)
    server.serve_forever()

Answer 1

你好Lennart Kloppenburg，

尝试将@play_socket.route('/status_ping')蓝图路线放在sockets = Sockets(app)之前。

以下对我有用，我可以在/ play / status_ping上与ping websocket交谈：

from flask import Blueprint, Flask, request, abort, redirect, url_for, render_template, make_response, Response, jsonify, session
from flask_sockets import Sockets
import json

play = Blueprint('simple_page', __name__)
play_socket = Blueprint('simple_page2', __name__)

@play_socket.route('/status_ping')
def ping(ws):
    while not ws.closed:
        message = ws.receive()
        response = json.dumps({"Message":message,"Response":"Message received"})
        ws.send(response)

app = Flask(__name__)
sockets = Sockets(app)
app.register_blueprint(play, url_prefix=r"/play")
sockets.register_blueprint(play_socket, url_prefix=r"/play")

Python Flask-Sockets无法在蓝图

1 个答案: