python websocket实时消息推送

十分想念顺店杂可。。。

本人写的渣，大神勿喷。

转载请附带本文链接，谢谢。

服务端代码

# -*- coding: utf-8 -*-
# @Time    : 2019/3/12 10:11
# @Author  : 甄超锋
# @Email   : 4535@sohu.com
# @File    : severs.py
# @Software: PyCharm
import socket
import base64
import hashlib
from threading import Thread
import struct
import copy
global users
users = set()
def get_headers(data):
    '''将请求头转换为字典'''
    header_dict = {}
    data = str(data, encoding="utf-8")
    header, body = data.split("\r\n\r\n", 1)
    header_list = header.split("\r\n")
    print("---"*22, body)
    for i in range(0, len(header_list)):
        if i == 0:
            if len(header_list[0].split(" ")) == 3:
                header_dict['method'], header_dict['url'], header_dict['protocol'] = header_list[0].split(" ")
        else:
            k, v = header_list[i].split(":", 1)
            header_dict[k] = v.strip()
    return header_dict
sock = socket.socket()
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind(("0.0.0.0", 8080))
sock.listen(5)
# 等待用户连接
def acce():
    conn, addr = sock.accept()
    print("conn from ", conn, addr)
    users.add(conn)
    # 获取握手消息，magic string ,sha1加密
    # 发送给客户端
    # 握手消息
    data = conn.recv(8096)
    headers = get_headers(data)
    # 对请求头中的sec-websocket-key进行加密
    response_tpl = "HTTP/1.1 101 Switching Protocols\r\n" \
          "Upgrade:websocket\r\n" \
          "Connection: Upgrade\r\n" \
          "Sec-WebSocket-Accept: %s\r\n" \
          "WebSocket-Location: ws://%s%s\r\n\r\n"
    magic_string = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11'
    value = headers['Sec-WebSocket-Key'] + magic_string
    ac = base64.b64encode(hashlib.sha1(value.encode('utf-8')).digest())
    response_str = response_tpl % (ac.decode('utf-8'), headers['Host'], headers['url'])
    # 响应【握手】信息
    conn.send(bytes(response_str, encoding='utf-8'),)
def get_data(info):
    payload_len = info[1] & 127
    if payload_len == 126:
        extend_payload_len = info[2:4]
        mask = info[4:8]
        decoded = info[8:]
    elif payload_len == 127:
        extend_payload_len = info[2:10]
        mask = info[10:14]
        decoded = info[14:]
    else:
        extend_payload_len = None
        mask = info[2:6]
        decoded = info[6:]
    bytes_list = bytearray()    #这里我们使用字节将数据全部收集，再去字符串编码，这样不会导致中文乱码
    for i in range(len(decoded)):
        chunk = decoded[i] ^ mask[i % 4]    #解码方式
        bytes_list.append(chunk)
    body = str(bytes_list, encoding='utf-8')
    return body
def send_msg(conn, msg_bytes):
    """
    WebSocket服务端向客户端发送消息
    :param conn: 客户端连接到服务器端的socket对象,即： conn,address = socket.accept()
    :param msg_bytes: 向客户端发送的字节
    :return:
    """
    token = b"\x81"  # 接收的第一字节，一般都是x81不变
    length = len(msg_bytes)
    if length < 126:
        token += struct.pack("B", length)
    elif length <= 0xFFFF:
        token += struct.pack("!BH", 126, length)
    else:
        token += struct.pack("!BQ", 127, length)
    msg = token + msg_bytes
    # 如果出错就是客户端断开连接
    try:
        conn.send(msg)
    except Exception as e:
        print(e)
        # 删除断开连接的记录
        users.remove(conn)
# 循环等待客户端建立连接
def th():
    while True:
        acce()
if __name__ == '__main__':
    # 循环建立连接创建一个线程
    Thread(target=th).start()
    # 循环群发
    while True:
        message = input("输入发送的数据")
        s_2 = copy.copy(users)
        for u in s_2:
            print(u)
            send_msg(u, bytes(message, encoding="utf-8"))

客户端代码

# -*- coding: utf-8 -*-
# @Time    : 2019/3/12 18:46
# @Author  : 甄超锋
# @Email   : 4535@sohu.com
# @File    : client.py
# @Software: PyCharm
try:
    import thread
except ImportError:
    import _thread as thread
import time
import websocket
ws = websocket.create_connection("ws://127.0.0.1:8080/")
while True:
    data = ws.recv()
    print(data)

HTML测试代码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
</body>
</html>
<script>
    ws =new WebSocket("ws://127.0.0.1:8080/");
    ws.onopen = function (ev) { //若是连接成功，onopen函数会执行
        console.log(22222)
    };
    ws.onmessage = function (ev) {//onmessage会接收到推送过来的消息
        console.log(ev);
    }
</script>