python websocket实时消息推送

╰半夏微凉° 2022-01-12 08:11 548阅读 0赞

# 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>

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转载于:https://www.cnblogs.com/zhenchoafeng/p/10863733.html