网络插座。如何正确地从服务器向浏览器发回消息

Question

握手之后，我向服务器发送一些“你好”。在

#Chrome javascript console

~var s = new WebSocket('ws://127.0.0.1:8999');
 s.onmessage = function(t){alert(t)};
 s.onopen = function(){console.log('yes');}

~sock.send('Hello');

然后服务器尝试阅读此邮件并发回另一封邮件

^{pr2}$

但是js控制台给我错误

WebSocket connection to 'ws://127.0.0.1:8999/' failed: Invalid frame header

更新

这里是我的服务器文件

import socket
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind(("", 9999))
sock.listen(5)

import hashlib
import base64

def makeHash(key):
    hash0 = key.replace(" ","")+"258EAFA5-E914-47DA-95CA-C5AB0DC85B11"
        return hash0
handshaken = False

print("TCPServer Waiting for client on port 9999")

import sys

data = ''
header = ''

client, address = sock.accept()
while True:
    if not handshaken:
        data = client.recv(16).decode("utf-8");
        header+=data
        if header.find('\r\n\r\n')>=0:
            key = header.split('Sec-WebSocket-Key: ')[1].split('\r\n')[0]
            hash0 = makeHash(key).encode('utf-8')
            hash1 = hashlib.sha1(hash0)
            ready = base64.b64encode(hash1.digest())
            newKey = str(ready)[2:][:-1]
            answer = "HTTP/1.1 101 Switching Protocols\r\n"+"Upgrade:         websocket\r\n"+"Connection: Upgrade\r\n"+"Sec-WebSocket-Accept: "+newKey+"\r\n\r\n"
        client.send(answer.encode('utf-8'))
        handshaken = True

    else:
        print("-")
else:
    tmp = client.recv(1024)
    data = str(tmp);
    print(data)

    answ = ('Hello').encode('utf-8')
    client.send(answ)