import socket, base64, hashlib

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind(('127.0.0.1', 9527))
sock.listen(5)
# 获取客户端socket对象
conn, address = sock.accept()
# 获取客户端的【握手】信息
data = conn.recv(1024)
print(data)
"""
b'GET /ws HTTP/1.1\r\n
Host: 127.0.0.1:9527\r\n
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:62.0) Gecko/20100101 Firefox/62.0\r\n
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2\r\n
Accept-Encoding: gzip, deflate\r\n
Sec-WebSocket-Version: 13\r\n
Origin: http://localhost:63342\r\n
Sec-WebSocket-Extensions: permessage-deflate\r\n
Sec-WebSocket-Key: jocLOLLq1BQWp0aZgEWL5A==\r\n
Cookie: session=6f2bab18-2dc4-426a-8f06-de22909b967b\r\n
Connection: keep-alive, Upgrade\r\n
Pragma: no-cache\r\n
Cache-Control: no-cache\r\n
Upgrade: websocket\r\n\r\n'
"""

# magic string为：258EAFA5-E914-47DA-95CA-C5AB0DC85B11
magic_string = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11'


def get_headers(data):
    header_dict = {}
    header_str = data.decode("utf8")
    for i in header_str.split("\r\n"):
        if str(i).startswith("Sec-WebSocket-Key"):
            header_dict["Sec-WebSocket-Key"] = i.split(":")[1].strip()

    return header_dict


def get_header(data):
    """
     将请求头格式化成字典
     :param data:
     :return:
     """
    header_dict = {}
    data = str(data, encoding='utf-8')

    header, body = data.split('\r\n\r\n', 1)
    header_list = header.split('\r\n')
    for i in range(0, len(header_list)):
        if i == 0:
            if len(header_list[i].split(' ')) == 3:
                header_dict['method'], header_dict['url'], header_dict['protocol'] = header_list[i].split(' ')
        else:
            k, v = header_list[i].split(':', 1)
            header_dict[k] = v.strip()
    return header_dict


headers = get_headers(data)  # 提取请求头信息
# 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://127.0.0.1:9527\r\n\r\n"

value = headers['Sec-WebSocket-Key'] + magic_string
print(value,"magic+websocketkey")
ac = base64.b64encode(hashlib.sha1(value.encode('utf-8')).digest())
print(ac,"accept")
response_str = response_tpl % (ac.decode('utf-8'))
# 响应【握手】信息
conn.send(response_str.encode("utf8"))

while True:
    msg = conn.recv(8096)
    print(msg)