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 : [email protected]
# @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 : [email protected]
# @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>