服务器在烧瓶应用程序 socketIO 脚本期间等待
Server wait during flask app socketIO script
我正在尝试在 Flask Web 套接字应用程序的服务器端脚本中创建时间延迟。
最终,我希望服务器能够处理许多并发请求,并且能够以固定的时间间隔向客户端发回两个数据包。
当我在两个 flask_socketio.emit
语句之间使用 time.sleep(x)
时,客户端会在睡眠完成后一起接收套接字发出的事件。
如何在 python flask 应用程序中实现 Emit X; wait Y seconds; emit Z
?
服务器端代码摘录:
from flask import Flask, request
from flask_socketio import SocketIO, join_room, emit
app = Flask(__name__)
socketio = SocketIO(app)
@socketio.on('ping')
def ping(appState):
"""send 2 pings, between a time interval"""
room = appState["sessionID"]
emit('serverPingResponse', {'room': room, 'msg':"Ping Received by Server"})
time.sleep(5)
emit('serverPingResponse', {'room': room, 'msg':"2nd time-delayed ping"})
return
客户端代码摘录:
var socket = io.connect('http://' + document.domain + ':' + location.port);
socket.on("serverPingResponse", function(msg){
// listen to server ping and print the message to console
let d = new Date();
console.log("ping received at "+d.toLocaleTimeString(), msg)
});
控制台输出
pinging server...
ping received at 10:43:14 AM
Object { room: "wvdhj01f3p", msg: "Ping Received by Server" }
ping received at 10:43:14 AM
Object { room: "wvdhj01f3p", msg: "2nd time-delayed ping" }
期望的输出是在 10:43:09
收到第一个 ping,在 10:43:14
收到第二个 ping
您正在使用 time.sleep()
功能,我猜它正在阻止您的服务器。尝试使用 socketio.sleep()
代替,这将执行与您正在使用的异步框架(eventlet、gevent)兼容的合作睡眠。
我正在尝试在 Flask Web 套接字应用程序的服务器端脚本中创建时间延迟。
最终,我希望服务器能够处理许多并发请求,并且能够以固定的时间间隔向客户端发回两个数据包。
当我在两个 flask_socketio.emit
语句之间使用 time.sleep(x)
时,客户端会在睡眠完成后一起接收套接字发出的事件。
如何在 python flask 应用程序中实现 Emit X; wait Y seconds; emit Z
?
服务器端代码摘录:
from flask import Flask, request
from flask_socketio import SocketIO, join_room, emit
app = Flask(__name__)
socketio = SocketIO(app)
@socketio.on('ping')
def ping(appState):
"""send 2 pings, between a time interval"""
room = appState["sessionID"]
emit('serverPingResponse', {'room': room, 'msg':"Ping Received by Server"})
time.sleep(5)
emit('serverPingResponse', {'room': room, 'msg':"2nd time-delayed ping"})
return
客户端代码摘录:
var socket = io.connect('http://' + document.domain + ':' + location.port);
socket.on("serverPingResponse", function(msg){
// listen to server ping and print the message to console
let d = new Date();
console.log("ping received at "+d.toLocaleTimeString(), msg)
});
控制台输出
pinging server...
ping received at 10:43:14 AM
Object { room: "wvdhj01f3p", msg: "Ping Received by Server" }
ping received at 10:43:14 AM
Object { room: "wvdhj01f3p", msg: "2nd time-delayed ping" }
期望的输出是在 10:43:09
收到第一个 ping,在 10:43:14
您正在使用 time.sleep()
功能,我猜它正在阻止您的服务器。尝试使用 socketio.sleep()
代替,这将执行与您正在使用的异步框架(eventlet、gevent)兼容的合作睡眠。