# -*- coding:utf-8 -*- import socket import base64 import hashlib def get_headers(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(' ', 1) header_list = header.split(' ') 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 #返回格式化后的字典 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:做了一个125,126,127的处理，然后跟魔法字符串拼接之后返回 """ import struct token = b"x81" 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 #token+魔法字符串 conn.send(msg) return True def run(): sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) sock.bind(('127.0.0.1', 8003)) sock.listen(5) conn, address = sock.accept() data = conn.recv(1024) #服务端接收的数据 headers = get_headers(data) #处理后的请求头信息 response_tpl = "HTTP/1.1 101 Switching Protocols " "Upgrade:websocket " "Connection:Upgrade " "Sec-WebSocket-Accept:%s " "WebSocket-Location:ws://%s%s " value = headers['Sec-WebSocket-Key'] + '258EAFA5-E914-47DA-95CA-C5AB0DC85B11' #魔法字符串 ac = base64.b64encode(hashlib.sha1(value.encode('utf-8')).digest()) #两次加密 response_str = response_tpl % (ac.decode('utf-8'), headers['Host'], headers['url']) conn.send(bytes(response_str, encoding='utf-8')) while True: try: info = conn.recv(8096) except Exception as e: info = None if not info: break """ 10010101 01111111 00010101 """ 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() for i in range(len(decoded)): chunk = decoded[i] ^ mask[i % 4] bytes_list.append(chunk) body = str(bytes_list, encoding='utf-8') print('原生消息', info) print('解密后',body) body ="服务端回复："+body send_msg(conn, body.encode('utf-8')) sock.close() if __name__ == '__main__': run()
<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title>基于websocket实现的聊天室</title> </head> <body> <div> <input type="text" id="txt"/> <input type="button" id="btn" value="提交" onclick="sendMsg();"/> <input type="button" id="close" value="关闭连接" onclick="closeConn();"/> </div> <div id="content"></div> <script type="text/javascript"> var socket = new WebSocket("ws://127.0.0.1:8003/chatsocket"); socket.onopen = function () { /* 与服务器端连接成功后，自动执行 */ var newTag = document.createElement('div'); newTag.innerHTML = "【连接成功】"; document.getElementById('content').appendChild(newTag); }; socket.onmessage = function (event) { /* 服务器端向客户端发送数据时，自动执行 */ var response = event.data; var newTag = document.createElement('div'); newTag.innerHTML = response; document.getElementById('content').appendChild(newTag); }; socket.onclose = function (event) { /* 服务器端主动断开连接时，自动执行 */ var newTag = document.createElement('div'); newTag.innerHTML = "【关闭连接】"; document.getElementById('content').appendChild(newTag); }; function sendMsg() { var txt = document.getElementById('txt'); socket.send(txt.value); txt.value = ""; } function closeConn() { socket.close(); var newTag = document.createElement('div'); newTag.innerHTML = "【关闭连接】"; document.getElementById('content').appendChild(newTag); } </script> </body> </html>