flask? ?websocket
?
websocket原理
Socket：
FTP - 文件服務
Django
Flask
Http - TCP:
1.一次請求 一次響應 斷開
2.客戶端永遠處于主動狀態
3.服務器永遠處于被動狀態
4.Http無狀態 - 在服務器不保存客戶端的信息
5.服務器無法主動找到客戶端
1.輪詢
客戶端向服務器不斷發起類似Http請求
服務器不斷的響應客戶端
帶上你的身份牌 - 服務器校驗身份
大爺去找你的消息 - 服務器獲取你應該拿到數據
if：拿到數據
else：拿不到數據 - 再次發起請求詢問服務器消息
劣勢：
1.雙端資源浪費
2.帶寬資源占用
3.不能保證數據實時性
上個世紀90年代 - 本世紀初：
24bps == 4-6KB
CPU == 800MHZ
內存 == 256MB
QQ -- ICQ
2.長輪詢
1.客戶端向服務器發起一個請求
2.服務器保持這個請求 不返回不響應
3.一定時間之后，服務器拋棄 or 返回
4.客戶端收到請求 立即再次發起保持
你去傳達室，大爺款待你喝茶，
喝茶等消息(保持)
上廁所(斷開)
再次回去喝茶等消息(保持)
劣勢：
1.服務器資源浪費
2.不能保證數據實時性
優勢：
1.節省客戶端資源
2.保證數據有效
當時的環境：本世紀初 - 目前
128bps == 20-30KB
Cpu == 1.4GHZ 奔騰4
內存 == 512MB
3.長連接
永久保持連接
1.你和大爺之間裝了一臺電話分機
2.你派人告訴大爺你的分機號碼
3.大爺撥通分機
4.你告訴大爺，有消息說句話，我派人去拿
5.你和大爺同時開啟了閉音
劣勢：
1.服務器CPU要求較高
優勢：
1.節省大量資源
2.數據實時有效性
3.帶寬幾乎不占用
現在的環境：
100mps == 百兆光纖 == 5MB/s || 2KB
CPU == 16核32線程 i9 3.2GHZ
內存 == 16GB
WebSocket協議：ws協議 ws://127.0.0.1 javascript封裝客戶端 http協議 http://127.0.0.1
三方：geventWebsocket Flask
Web框架 ：用來進行Http請求的處理 (握手)
單聊：
收發快遞模型：
寄件人：user1 from_user
收件人：user2 to_user
包裹
user2：
寄件人是user1 打開包裹 - 被罵了
罵回去：
寄件人：user2
收件人：user1
包裹
user1：
寄件人是user2 打開包裹 - 罵回來了
對罵吧：
寄件人：user1
收件人：user2
包裹
?
websocket實現的群聊功能
from geventwebsocket.handler import WebSocketHandler from gevent.pywsgi import WSGIServer from geventwebsocket.websocket import WebSocket from geventwebsocket.exceptions import WebSocketErrorfrom flask import Flask,render_template,requestapp = Flask(__name__)user_socket_list = []@app.route("/my_chat") def my_chat():return render_template("M_chat.html")@app.route("/my_ws") def my_ws():user_socket = request.environ.get("wsgi.websocket")user_socket_list.append(user_socket)print(len(user_socket_list),user_socket_list)while 1:try:msg = user_socket.receive()except WebSocketError:user_socket_list.remove(user_socket)return "goodbye"for u in user_socket_list:if u == user_socket:continuetry:u.send(msg)except :continueif __name__ == '__main__':http_server = WSGIServer(("0.0.0.0",9527),app,handler_class=WebSocketHandler)http_server.serve_forever()
?
html部分
<!DOCTYPE html> <html lang="en"> <head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1"><link rel="stylesheet" href="../../static/bootstrap/css/bootstrap.min.css"><title>Title</title> </head> <body> <div class="container"><div class="row"><div class="col-md-4"><div class="form-group"><label for="message">消息為:</label><input type="text" id="message" class="form-control"></div><button onclick="send_message()" class="btn btn-danger">發送</button></div><div id="chat_list" class="col-md-8"></div></div> </div><script type="application/javascript">var ws = new WebSocket("ws://127.0.0.1:9527/my_ws");ws.onmessage = function (evenMessage) {var p = document.createElement("p");p.innerText = evenMessage.data;document.getElementById("chat_list").appendChild(p)};function send_message() {var message = document.getElementById("message").value;ws.send(message);}</script> </body> </html>
?
?
websocket實現的單聊功能
import jsonfrom geventwebsocket.handler import WebSocketHandler from gevent.pywsgi import WSGIServer from geventwebsocket.websocket import WebSocket from geventwebsocket.exceptions import WebSocketErrorfrom flask import Flask, request, render_templateapp = Flask(__name__)user_socket_dict = {} @app.route("/my_chat") def my_app():return render_template("my_chat.html")@app.route("/my_ws/<username>") def my_ws(username):user_socket = request.environ.get("wsgi.websocket")user_socket_dict[username] = user_socket# print(len(user_socket_dict),user_socket_dict)while 1 :try:msg = user_socket.receive()# print(msg)msg_dict = json.loads(msg)to_user = msg_dict.get("to_user")to_user_socket = user_socket_dict.get(to_user)to_user_socket.send(msg)except WebSocketError:user_socket_dict.pop(username)return "goodbye"if __name__ == '__main__':http_server = WSGIServer(("0.0.0.0", 5000), app, handler_class=WebSocketHandler)http_server.serve_forever()
html部分
<!DOCTYPE html> <html lang="en"> <head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1"><link rel="stylesheet" href="../../static/bootstrap/css/bootstrap.min.css"><title>Title</title> </head> <body> <div class="container"><div class="row"><div class="col-md-4"><div class="form-group"><label for="mynickname">用戶名:</label><input type="text" id="mynickname" class="form-control"></div><button onclick="open_chat()" class="btn btn-danger">登錄聊天室</button><div class="form-group"><label for="to_user">發送給:</label><input type="text" id="to_user" class="form-control"></div><div class="form-group"><label for="message">消息為:</label><input type="text" id="message" class="form-control"></div><button onclick="send_message()" class="btn btn-danger">發送</button></div><div id="chat_list" class="col-md-8"></div></div> </div><script type="application/javascript">var ws = null;function open_chat() {var mynickname = document.getElementById("mynickname").value;ws = new WebSocket("ws://127.0.0.1:5000/my_ws/" + mynickname);ws.onopen = function () {alert(mynickname + "歡迎來到對話平臺");};ws.onmessage = function (evenMessage) {console.log(evenMessage.data);var chat = JSON.parse(evenMessage.data);var p = document.createElement("p");p.style.cssText = "width: 400px ;text-align: left";p.innerText = chat.from_user + "->" + chat.message;document.getElementById("chat_list").appendChild(p);};ws.onclose = function () {//斷開機制 console.log("連接已斷開,你已經斷啦")};}function send_message() {var message = document.getElementById("message").value;var from_user = document.getElementById("mynickname").value;var to_user = document.getElementById("to_user").value;var send_str = {from_user: from_user,to_user: to_user,message: message};ws.send(JSON.stringify(send_str));var p = document.createElement("p");p.style.cssText = "width: 400px;text-align: right";p.innerText = send_str.message + "<-我";document.getElementById("chat_list").appendChild(p);}</script></body> </html>
?
?
websocket握手原理
import socket, base64, hashlibsock = 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) # 獲取客戶端socket對象 conn, address = sock.accept() # 阻塞 # 獲取客戶端的【握手】信息 data = conn.recv(1024) print(data)""" b'GET / HTTP/1.1\r\n Host: 127.0.0.1:9527\r\n Connection: Upgrade\r\n Pragma: no-cache\r\n Cache-Control: no-cache\r\n Upgrade: websocket\r\n Origin: http://localhost:63342\r\n Sec-WebSocket-Version: 13\r\n User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36\r\n Accept-Encoding: gzip, deflate, br\r\n Accept-Language: zh-CN,zh;q=0.9\r\n Sec-WebSocket-Key: 176bkom1UAtHfS7MUYCwlQ==\r\n Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits\r\n\r\n' """ # 1.轉字符串 切片 # 2.轉字符串 正則 # 3.轉字符串 split("\r\n") - [] for []# # 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_dictheaders = get_headers(data) # 提取請求頭信息 # # 對請求頭中的sec-websocket-key進行加密 swk = headers['Sec-WebSocket-Key'] # Websocket 中的魔法字符串 magic_string magic_string = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11' value = swk + magic_string # 176bkom1UAtHfS7MUYCwlQ==258EAFA5-E914-47DA-95CA-C5AB0DC85B11 # ZWHsGUn8ogDGd+JYzQunlQ==258EAFA5-E914-47DA-95CA-C5AB0DC85B11 # dFRV9m2/6PWawNWYUkRHDw==258EAFA5-E914-47DA-95CA-C5AB0DC85B11 ac = base64.b64encode(hashlib.sha1(value.encode('utf-8')).digest()) print(value) print(ac) # b'PIj4+UWLuqcpcTZcMnnu9Ik6rSQ=' # b'iZFEC+HI/NqNp5g2BoENbywWBLA=' # b'LXO3G84XmpR7crmJcZFaLPUDVHU=' 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"response_str = response_tpl % (ac.decode('utf-8')) # 響應【握手】信息 conn.send(response_str.encode("utf8"))while True:msg = conn.recv(8096)print(msg)import websocket加密conn.send(websocket加密.res()) # # magic string為：258EAFA5-E914-47DA-95CA-C5AB0DC85B11 #
?
websocket解密
# b'\x81\x83\xceH\xb6\x85\xffz\x85' hashstr = b'\x81\x8c\xc2J\xb3\x0c\xaa/\xdf`\xadj\xc4c\xb0&\xd7-' # b'\x81 \x8c \xc2J\xb3\x0c\xaa/\xdf`\xadj\xc4c\xb0&\xd7-' ssss = b'\x81\xfe\x0bp\x8fF\xa1\xa3j\xc3)F7\xdbD+\x14\xa2\x199i\xda\x0bF\x02\xccI#\x03\xa2\x19\x0ef\xc72F;\xefG\r\r\xa9\x1d/k\xfd+F+\xefE\x1b\x04\xa2\x19*j\xce\'L3\xcaF8\x05\xa3\x16=h\xd0\x13F3\xccN\x1f\x03\xa0\x0c\x07g\xe9;F\x02\xf7G#*\xa3\x0c;k\xfc\x00G6\xcdF\x04\x04\xa2\x18<l\xc6#D\x0b\xf0E\x1d\x02\xa3,\x08k\xff*K\x08\xe5E\x1b\x02\xa0&+k\xfc/F\t\xc3N\x1f\x03\xa3\x1e\x03j\xf96G6\xcdD\x00$\xa3\x1e;g\xfc\nG5\xc8D\x07\x19\xae!&`\xfa-D\x14\xd0I\x1c2\xa3$+j\xfe<G6\xcdG\r\x05\xaf $`\xfa-E#\xf4G)*\xa2\x18(k\xfc/J\x16\xddE\x1b\x04\xa2\x18<l\xc6#K \xdcD\r\x13\xa3\x1d#j\xfa\x01F\x13\xe5D3#\xa9\x1d/k\xfd\x04F\n\xcfD&\x07\xa3\x19>f\xc76F1\xf1N\x1f\x03\xa0 \x01j\xfa9F0\xd1D\x00$\xa2\x18(i\xf65L3\xcaE\x1b\x02\xa3\x0f?j\xe0%K\x08\xecI,=\xae7\'`\xfa-G6\xcdI\x14 \xa2\x18<`\xfa-F\n\xceD\x1b\x12\xa3)8k\xfe;E\x13\xecD.\x05\xae!/k\xfe\x0cJ\x0e\xd5D\x17&\xa0\x0f!`\xfa-G4\xccD\x07&\xa2\x19(k\xfe(F\x07\xc0N\x1f\x03\xa1:)j\xf1?D\x19\xf4D\x1f\x05\xa9\x1d/i\xeb\x05K \xdcD.>\xa0!\x06j\xeb9G5\xe7E\x1a\x04\xa1\x06(k\xff>@\x0f\xc4F\'9\xa2\x1f.j\xcb\nG6\xcdI$,\xa2\x19.i\xc1)G5\xc8D%\n\xa9\x1d/j\xf9\x01F0\xd1E\x1a\x04\xa3\x02\x08j\xf99K5\xedE\x19\x01\xa3\x055g\xc6$L3\xcaF8\x19\xae\x1e\x1ej\xc3)F7\xdbE\x1a\x04\xa0\x0f)f\xc7&L3\xcaG\x0f=\xa0+\x06k\xff*G5\xc8H:\x14\xa2\x19(k\xff>@\x0f\xc4I\x0c\x15\xa3\x0f?j\xfa!F3\xe6D?,\xa31\x0fh\xc2\x17G1\xcbD\x1f\x1a\xa37\x18j\xe2\x10F\x02\xedE\x1a\x04\xae&\x00k\xfe,E\x08\xceE\x19\x01\xa3\'&`\xfa-F0\xe6D\x1c\x18\xa2\x18(j\xe5\nF0\xdeI\x19$\xa2\x1b-j\xe27K\x0f\xc3N\x1f\x03\xa1:5g\xf9\x1cF\n\xceD\x1b\x12\xa2\x18(i\xe8+J\x0e\xc1N\x1f\x03\xa0\r\x11i\xcc\x04G6\xcdE\x19\x01\xaf88k\xfe*G6\xd9B#\r\xae\x0e9j\xe8=F3\xc6D\x1f/\xa3=\x00j\xd6\rL3\xcaE\x18*\xa3$*j\xc3)F7\xdbH"\x18\xa3\x1f\x14`\xfa-E\x0e\xe4D\x1f\x17\xa3\x1e4j\xe5\nG6\xcdG\x13\x1b\xa9\x1d/k\xfe,F!\xdaD\x05\x0b\xae&\tg\xc9\x13K\x19\xc2N\x1f\x03\xa3\x1d6j\xd0\x1aF+\xf7E\x1a\x06\xa9\x1d/k\xfd\x04F.\xd8D\x1c/\xae\x11,k\xff*K8\xe9E\x1a\x10\xa9\x1d/`\xfa-G7\xcbD\r\x13\xa3\x07\'g\xc1\x0bK\x00\xf4I5\x0b\xa9\x1d/j\xfa4F\x19\xfdN\x1f\x03\xa2\x1a\x06j\xc3(F\n\xceD\x1b\x12\xaf 4j\xf8\x16L3\xcaG"-\xa3\x1d;j\xf96F,\xedE\x1a\x04\xa0\x117`\xfa-G7\xcbD\r\x13\xa3\x07\'g\xc1\x0bK\x00\xf4I5\x0b\xa9\x1d/j\xfa4F\x19\xfdD\x07>\xa2\x18*`\xfa-G4\xe3D\x02\x11\xa3\x1e\x03g\xf6.G6\xcdI\x14 \xa2\x18<`\xfa-F\n\xceD\x1b\x12\xa3)8k\xfe;E\x13\xecD.\x05\xae!/k\xfe\x0cJ\x0e\xd5D\x17&\xa0\x0f!`\xfa-G4\xccD\x07&\xa2\x19(k\xfe(F\x07\xc0N\x1f\x03\xa1:)j\xf1?D\x19\xf4D\x1f\x05\xa9\x1d/i\xeb\x05K \xdcD.>\xa0!\x06j\xeb9G5\xe7E\x1a\x04\xa1\x06(k\xff>@\x0f\xc4F\'9\xa2\x1f.j\xcb\nG6\xcdI$,\xa2\x19.i\xc1)G5\xc8D%\n\xa9\x1d/j\xf9\x01F0\xd1E\x1a\x04\xa3\x02\x08j\xf99K5\xedE\x19\x01\xa3\x055g\xc6$L3\xcaF8\x19\xae\x1e\x1ej\xc3)F7\xdbF\'9\xa2\x1f.j\xfa4F\x19\xfdD\x07>\xa3,\x08k\xff*K\x08\xe5E\x1b\x02\xa0&+k\xfc/F\t\xc3N\x1f\x03\xa3\x1e\x03j\xf96G6\xcdD\x00$\xa3\x1e;g\xfc\nG5\xc8D\x07\x19\xae!&`\xfa-D\x14\xd0I\x1c2\xa3$+j\xfe<G6\xcdG\r\x05\xaf $`\xfa-E#\xf4G)*\xa2\x18(k\xfc/J\x16\xddE\x1b\x04\xa2\x18<l\xc6#K \xdcD\r\x13\xa3\x1d#j\xfa\x01F\x13\xe5D3#\xa9\x1d/k\xfd\x04F\n\xcfD&\x07\xa3\x19>f\xc76F1\xf1N\x1f\x03\xa0 \x01j\xfa9F0\xd1D\x00$\xa2\x18(i\xf65L3\xcaE\x1b\x02\xa3\x0f?j\xe0%K\x08\xecI,=\xae7\'`\xfa-F3\xd3D54\xa3\x05\x12k\xff(L3\xcaE\x18*\xa3\x00=j\xf9\x01K?\xc9E\x1a\x04\xae\x16\x0ck\xff>L3\xcaN\x1f\x03\xa2\x19.j\xe8=F)\xc2I$%\xae.\x11g\xd0%L3\xcaD\x1f\x1a\xa37\x18k\xff*E!\xccH"\x08\xa9\x1d/i\xea\x13E\x05\xe3E\x1a\x04\xa2\x1b-f\xdf:G7\xcdE\x1a\x10\xa5!!g\xe9;F!\xdaD\x1f\x0f\xa3\x1d\x03j\xda\x02F\x1f\xeaN\x1f\x03\xa2\x1a\x06j\xc3(F\n\xceD\x1b\x12\xaf 4j\xf8\x16L3\xcaG"-\xa3\x1d;j\xf96F,\xedE\x1a\x04\xa0\x117`\xfa-G7\xcbD\r\x13\xa3\x07\'g\xc1\x0bK\x00\xf4I5\x0b\xa9\x1d/j\xfa4F\x19\xfdD\x07>\xa2\x18*`\xfa-G4\xe3D\x02\x11\xa3\x1e\x03g\xf6.G6\xcdI\x14 \xa2\x18<`\xfa-F\n\xceD\x1b\x12\xa3)8k\xfe;E\x13\xecD.\x05\xae!/k\xfe\x0cJ\x0e\xd5D\x17&\xa0\x0f!`\xfa-G4\xccD\x07&\xa2\x19(k\xfe(F\x07\xc0N\x1f\x03\xa1:)j\xf1?D\x19\xf4D\x1f\x05\xa9\x1d/i\xeb\x05K \xdcD.>\xa0!\x06j\xeb9G5\xe7E\x1a\x04\xa1\x06(k\xff>@\x0f\xc4F\'9\xa2\x1f.j\xfa4F\x19\xfdD\x07>\xa3,\x08k\xff*K\x08\xe5E\x1b\x02\xa0&+k\xfc/F\t\xc3N\x1f\x03\xa3\x1e\x03j\xf96G6\xcdD\x00$\xa3\x1e;g\xfc\nG5\xc8D\x07\x19\xae!&`\xfa-D\x14\xd0I\x1c2\xa3$+j\xfe<G6\xcdG\r\x05\xaf $`\xfa-E#\xf4G)*\xa2\x18(k\xfc/J\x16\xddE\x1b\x04\xa2\x18<l\xc6#K \xdcD\r\x13\xa3\x1d#j\xfa\x01F\x13\xe5D3#\xa9\x1d/k\xfd\x04F\n\xcfD&\x07\xa3\x19>f\xc76F1\xf1N\x1f\x03\xa0 \x01j\xfa9F0\xd1D\x00$\xa2\x18(i\xf65L3\xcaE\x1b\x02\xa3\x0f?j\xe0%K\x08\xecI,=\xae7\'`\xfa-F3\xd3D54\xa3\x05\x12k\xff(L3\xcaE\x18*\xa3\x00=j\xf9\x01K?\xc9E\x1a\x04\xae\x16\x0ck\xff>L3\xcaN\x1f\x03\xa2\x19.j\xe8=F)\xc2I$%\xae.\x11g\xd0%L3\xcaD\x1f\x1a\xa37\x18j\xe2\x10G6\xcfN\x1f\x03\xa2\x1a\x06j\xe7?F0\xe6I\x13\x00\xa2\x18(g\xf1\x0eG6\xd9N\x1f\x03\xa3$+j\xfe<F\x07\xddE\x1b\x15\xa0=\tj\xcb+K\x0f\xcaE\x1b"\xaf 0j\xf2\x08E!\xc4N\x1f\x03\xa2\x1a)j\xe2\x08G7\xcdE\x1b\x06\xa3)%`\xfa-D\x14\xccD\x14\x11\xa17\x11j\xfa+L3\xcaG\x0e+\xae\x0e9j\xcb\x10E\x0f\xe3D\x0e\x17\xa2\x1b\x02k\xff*D(\xcdE\x1a\x10\xa5!!h\xc2\x17G1\xcbD.$\xa2\x18(g\xc1\x02G7\xcbG$\x07\xa2\x1b-j\xc0$L3\xcaD\x1c/\xa3\x1e4k\xff*F,\xedD\x1c\x17\xae\x1b\x08k\xfc/F+\xd0I#\n\xa9\x1d/h\xdd7K0\xfbD&\x07\xa3\x19>k\xff*E!\xccH"\x08\xa9\x1d/i\xea\x13E\x05\xe3E\x1a\x04\xa2\x1b-f\xdf:G7\xcdE\x1a\x10\xa5!!g\xe9;F!\xdaD\x1f\x0f\xa3\x1d\x03j\xda\x02F\x1f\xeaN\x1f\x03\xa2\x1a\x06j\xc3(F\n\xceD\x1b\x12\xaf 4j\xf8\x16L3\xcaG"-\xa3\x1d;j\xf96F,\xedE\x1a\x04\xa0\x117`\xfa-G7\xcbD\r\x13\xa3\x07\'g\xc1\x0bK\x00\xf4I5\x0b\xa9\x1d/j\xfa4F\x19\xfdD\x07>\xa2\x18*`\xfa-G4\xe3D\x02\x11\xa3\x1e\x03g\xf6.G6\xcdI\x14 \xa2\x18<`\xfa-F\n\xceD\x1b\x12\xa3)8k\xfe;E\x13\xecD.\x05\xae!/k\xfe\x0cJ\x0e\xd5D\x17&\xa0\x0f!`\xfa-G4\xccD\x07&\xa2\x19(k\xfe(F\x07\xc0N\x1f\x03\xa1:)j\xf1?D\x19\xf4D\x1f\x05\xa9\x1d/i\xeb\x05K \xdcD.>\xa0!\x06j\xeb9G5\xe7E\x1a\x04\xa1\x06(k\xff>@\x0f\xc4F\'9\xa2\x1f.j\xcb\nG6\xcdI$,\xa2\x19.i\xc1)G5\xc8D%\n\xa9\x1d/j\xf9\x01F0\xd1E\x1a\x04\xa3\x02\x08j\xf99K5\xedE\x1a\x06\xa9\x1d/k\xfd\x04F\n\xcfD&\x07\xa3\x19>f\xc76F1\xf1N\x1f\x03\xa0 \x01j\xfa9F0\xd1D\x00$\xa2\x18(i\xf65L3\xcaE\x1b\x02\xa3\x0f?j\xe0%K\x08\xecI,=\xae7\'`\xfa-F3\xd3D54\xa3\x05\x12k\xff(L3\xcaE\x18*\xa3\x00=j\xf9\x01K?\xc9E\x1a\x04\xae\x16\x0ck\xff>L3\xcaD&\x07\xa3\x19>j\xce:G7\xdcG?%\xa3,)g\xc6-G7\xebH"\x1c\xa3\x15\ni\xe8#L3\xcaE\x18\x05\xa3\x05\nk\xfe*G7\xcfD+\t\xa9\x1d/h\xdd+F8\xd8F5=\xa3\x1d)`\xfa-E"\xe2I\x0c\x15\xa3,\x12i\xc6\x04F"\xdeE\x19.\xa2\x18(h\xe1*G6\xd9B#\r\xa1%\x15k\xf8,F\x02\xedE\x1a\x04\xae&\x00k\xfe,E\x08\xceE\x19\x01\xa3\'&`\xfa-F0\xe6D\x1c\x18\xa2\x18(j\xe5\nF0\xdeI\x19$\xa2\x1b-j\xe27K\x0f\xc3N\x1f\x03\xa1:5g\xf9\x1cF\n\xceD\x1b\x12\xa2\x18(i\xe8+J\x0e\xc1N\x1f\x03\xa0\r\x11i\xcc\x04G6\xcdE\x19\x01\xaf88k\xfe*G6\xd9B#\r\xae\x0e9j\xe8=F3\xc6D\x1f/\xa3=\x00j\xd6\rL3\xcaE\x18*\xa3$*j\xc3)F7\xdbH"\x18\xa3\x1f\x14`\xfa-E\x0e\xe4D\x1f\x17\xa3\x1e4j\xe5\nG6\xcdG\x13\x1b\xa9\x1d/k\xfe,F!\xdaD\x05\x0b\xae&\tg\xc9\x13K\x19\xc2N\x1f\x03\xa3\x1d6j\xd0\x1aF+\xf7E\x1a\x06\xa9\x1d/k\xfd\x04F.\xd8D\x1c/\xae\x11,k\xff*K8\xe9E\x1a\x10\xa9\x1d/j\xc3)F7\xdbD+\x14\xa2\x199i\xda\x0bF\x02\xccI#\x03\xa2\x19\x0ef\xc72F;\xefG\r\r\xa9\x1d/k\xfd+F+\xefE\x1b\x04\xa2\x19*j\xce\'L3\xcaF8\x05\xa3\x16=h\xd0\x13F3\xccN\x1f\x03\xa0\x0c\x07g\xe9;F\x02\xf7G#*\xa3\x0c;k\xfc\x00G6\xcdF\x04\x04\xa2\x18<l\xc6#F.\xd8D\x1c/\xae\x11,'print(ssss[2:4]) # == 140 # 與127做 與 位運算 12# Websocket 加密 解密 3種情況 # 校驗位 : 由websocket加密字符串的第二個字節與127期開始進行與位運算 # 校驗位 == 127 # 校驗位 == 126 # 校驗位 <= 125# 將第二個字節也就是 \x83 第9-16位 進行與127進行位運算 payload = hashstr[1] & 127 print(payload) if payload == 127:extend_payload_len = hashstr[2:10] # 15.5ZBmask = hashstr[10:14]decoded = hashstr[14:] # 當位運算結果等于127時,則第3-10個字節為數據長度 # 第11-14字節為mask 解密所需字符串 # 則數據為第15字節至結尾# ssss = b'\x81\xfe\x0bp\x8fF\xa1\xa3j\xc3)F7\xdbD+\x14\xa2\x199i\xda\x0bF\x02\xccI#\x03\xa2\x19\x0ef\xc72F;\xefG\r\r\xa9\x1d/k\xfd+F+\xefE\x1b\x04\xa2\x19*j\xce\'L3\xcaF8\x05\xa3\x16=h\xd0\x13F3\xccN\x1f\x03\xa0\x0c\x07g\xe9;F\x02\xf7G#*\xa3\x0c;k\xfc\x00G6\xcdF\x04\x04\xa2\x18<l\xc6#D\x0b\xf0E\x1d\x02\xa3,\x08k\xff*K\x08\xe5E\x1b\x02\xa0&+k\xfc/F\t\xc3N\x1f\x03\xa3\x1e\x03j\xf96G6\xcdD\x00$\xa3\x1e;g\xfc\nG5\xc8D\x07\x19\xae!&`\xfa-D\x14\xd0I\x1c2\xa3$+j\xfe<G6\xcdG\r\x05\xaf $`\xfa-E#\xf4G)*\xa2\x18(k\xfc/J\x16\xddE\x1b\x04\xa2\x18<l\xc6#K \xdcD\r\x13\xa3\x1d#j\xfa\x01F\x13\xe5D3#\xa9\x1d/k\xfd\x04F\n\xcfD&\x07\xa3\x19>f\xc76F1\xf1N\x1f\x03\xa0 \x01j\xfa9F0\xd1D\x00$\xa2\x18(i\xf65L3\xcaE\x1b\x02\xa3\x0f?j\xe0%K\x08\xecI,=\xae7\'`\xfa-G6\xcdI\x14 \xa2\x18<`\xfa-F\n\xceD\x1b\x12\xa3)8k\xfe;E\x13\xecD.\x05\xae!/k\xfe\x0cJ\x0e\xd5D\x17&\xa0\x0f!`\xfa-G4\xccD\x07&\xa2\x19(k\xfe(F\x07\xc0N\x1f\x03\xa1:)j\xf1?D\x19\xf4D\x1f\x05\xa9\x1d/i\xeb\x05K \xdcD.>\xa0!\x06j\xeb9G5\xe7E\x1a\x04\xa1\x06(k\xff>@\x0f\xc4F\'9\xa2\x1f.j\xcb\nG6\xcdI$,\xa2\x19.i\xc1)G5\xc8D%\n\xa9\x1d/j\xf9\x01F0\xd1E\x1a\x04\xa3\x02\x08j\xf99K5\xedE\x19\x01\xa3\x055g\xc6$L3\xcaF8\x19\xae\x1e\x1ej\xc3)F7\xdbE\x1a\x04\xa0\x0f)f\xc7&L3\xcaG\x0f=\xa0+\x06k\xff*G5\xc8H:\x14\xa2\x19(k\xff>@\x0f\xc4I\x0c\x15\xa3\x0f?j\xfa!F3\xe6D?,\xa31\x0fh\xc2\x17G1\xcbD\x1f\x1a\xa37\x18j\xe2\x10F\x02\xedE\x1a\x04\xae&\x00k\xfe,E\x08\xceE\x19\x01\xa3\'&`\xfa-F0\xe6D\x1c\x18\xa2\x18(j\xe5\nF0\xdeI\x19$\xa2\x1b-j\xe27K\x0f\xc3N\x1f\x03\xa1:5g\xf9\x1cF\n\xceD\x1b\x12\xa2\x18(i\xe8+J\x0e\xc1N\x1f\x03\xa0\r\x11i\xcc\x04G6\xcdE\x19\x01\xaf88k\xfe*G6\xd9B#\r\xae\x0e9j\xe8=F3\xc6D\x1f/\xa3=\x00j\xd6\rL3\xcaE\x18*\xa3$*j\xc3)F7\xdbH"\x18\xa3\x1f\x14`\xfa-E\x0e\xe4D\x1f\x17\xa3\x1e4j\xe5\nG6\xcdG\x13\x1b\xa9\x1d/k\xfe,F!\xdaD\x05\x0b\xae&\tg\xc9\x13K\x19\xc2N\x1f\x03\xa3\x1d6j\xd0\x1aF+\xf7E\x1a\x06\xa9\x1d/k\xfd\x04F.\xd8D\x1c/\xae\x11,k\xff*K8\xe9E\x1a\x10\xa9\x1d/`\xfa-G7\xcbD\r\x13\xa3\x07\'g\xc1\x0bK\x00\xf4I5\x0b\xa9\x1d/j\xfa4F\x19\xfdN\x1f\x03\xa2\x1a\x06j\xc3(F\n\xceD\x1b\x12\xaf 4j\xf8\x16L3\xcaG"-\xa3\x1d;j\xf96F,\xedE\x1a\x04\xa0\x117`\xfa-G7\xcbD\r\x13\xa3\x07\'g\xc1\x0bK\x00\xf4I5\x0b\xa9\x1d/j\xfa4F\x19\xfdD\x07>\xa2\x18*`\xfa-G4\xe3D\x02\x11\xa3\x1e\x03g\xf6.G6\xcdI\x14 \xa2\x18<`\xfa-F\n\xceD\x1b\x12\xa3)8k\xfe;E\x13\xecD.\x05\xae!/k\xfe\x0cJ\x0e\xd5D\x17&\xa0\x0f!`\xfa-G4\xccD\x07&\xa2\x19(k\xfe(F\x07\xc0N\x1f\x03\xa1:)j\xf1?D\x19\xf4D\x1f\x05\xa9\x1d/i\xeb\x05K \xdcD.>\xa0!\x06j\xeb9G5\xe7E\x1a\x04\xa1\x06(k\xff>@\x0f\xc4F\'9\xa2\x1f.j\xcb\nG6\xcdI$,\xa2\x19.i\xc1)G5\xc8D%\n\xa9\x1d/j\xf9\x01F0\xd1E\x1a\x04\xa3\x02\x08j\xf99K5\xedE\x19\x01\xa3\x055g\xc6$L3\xcaF8\x19\xae\x1e\x1ej\xc3)F7\xdbF\'9\xa2\x1f.j\xfa4F\x19\xfdD\x07>\xa3,\x08k\xff*K\x08\xe5E\x1b\x02\xa0&+k\xfc/F\t\xc3N\x1f\x03\xa3\x1e\x03j\xf96G6\xcdD\x00$\xa3\x1e;g\xfc\nG5\xc8D\x07\x19\xae!&`\xfa-D\x14\xd0I\x1c2\xa3$+j\xfe<G6\xcdG\r\x05\xaf $`\xfa-E#\xf4G)*\xa2\x18(k\xfc/J\x16\xddE\x1b\x04\xa2\x18<l\xc6#K \xdcD\r\x13\xa3\x1d#j\xfa\x01F\x13\xe5D3#\xa9\x1d/k\xfd\x04F\n\xcfD&\x07\xa3\x19>f\xc76F1\xf1N\x1f\x03\xa0 \x01j\xfa9F0\xd1D\x00$\xa2\x18(i\xf65L3\xcaE\x1b\x02\xa3\x0f?j\xe0%K\x08\xecI,=\xae7\'`\xfa-F3\xd3D54\xa3\x05\x12k\xff(L3\xcaE\x18*\xa3\x00=j\xf9\x01K?\xc9E\x1a\x04\xae\x16\x0ck\xff>L3\xcaN\x1f\x03\xa2\x19.j\xe8=F)\xc2I$%\xae.\x11g\xd0%L3\xcaD\x1f\x1a\xa37\x18k\xff*E!\xccH"\x08\xa9\x1d/i\xea\x13E\x05\xe3E\x1a\x04\xa2\x1b-f\xdf:G7\xcdE\x1a\x10\xa5!!g\xe9;F!\xdaD\x1f\x0f\xa3\x1d\x03j\xda\x02F\x1f\xeaN\x1f\x03\xa2\x1a\x06j\xc3(F\n\xceD\x1b\x12\xaf 4j\xf8\x16L3\xcaG"-\xa3\x1d;j\xf96F,\xedE\x1a\x04\xa0\x117`\xfa-G7\xcbD\r\x13\xa3\x07\'g\xc1\x0bK\x00\xf4I5\x0b\xa9\x1d/j\xfa4F\x19\xfdD\x07>\xa2\x18*`\xfa-G4\xe3D\x02\x11\xa3\x1e\x03g\xf6.G6\xcdI\x14 \xa2\x18<`\xfa-F\n\xceD\x1b\x12\xa3)8k\xfe;E\x13\xecD.\x05\xae!/k\xfe\x0cJ\x0e\xd5D\x17&\xa0\x0f!`\xfa-G4\xccD\x07&\xa2\x19(k\xfe(F\x07\xc0N\x1f\x03\xa1:)j\xf1?D\x19\xf4D\x1f\x05\xa9\x1d/i\xeb\x05K \xdcD.>\xa0!\x06j\xeb9G5\xe7E\x1a\x04\xa1\x06(k\xff>@\x0f\xc4F\'9\xa2\x1f.j\xfa4F\x19\xfdD\x07>\xa3,\x08k\xff*K\x08\xe5E\x1b\x02\xa0&+k\xfc/F\t\xc3N\x1f\x03\xa3\x1e\x03j\xf96G6\xcdD\x00$\xa3\x1e;g\xfc\nG5\xc8D\x07\x19\xae!&`\xfa-D\x14\xd0I\x1c2\xa3$+j\xfe<G6\xcdG\r\x05\xaf $`\xfa-E#\xf4G)*\xa2\x18(k\xfc/J\x16\xddE\x1b\x04\xa2\x18<l\xc6#K \xdcD\r\x13\xa3\x1d#j\xfa\x01F\x13\xe5D3#\xa9\x1d/k\xfd\x04F\n\xcfD&\x07\xa3\x19>f\xc76F1\xf1N\x1f\x03\xa0 \x01j\xfa9F0\xd1D\x00$\xa2\x18(i\xf65L3\xcaE\x1b\x02\xa3\x0f?j\xe0%K\x08\xecI,=\xae7\'`\xfa-F3\xd3D54\xa3\x05\x12k\xff(L3\xcaE\x18*\xa3\x00=j\xf9\x01K?\xc9E\x1a\x04\xae\x16\x0ck\xff>L3\xcaN\x1f\x03\xa2\x19.j\xe8=F)\xc2I$%\xae.\x11g\xd0%L3\xcaD\x1f\x1a\xa37\x18j\xe2\x10G6\xcfN\x1f\x03\xa2\x1a\x06j\xe7?F0\xe6I\x13\x00\xa2\x18(g\xf1\x0eG6\xd9N\x1f\x03\xa3$+j\xfe<F\x07\xddE\x1b\x15\xa0=\tj\xcb+K\x0f\xcaE\x1b"\xaf 0j\xf2\x08E!\xc4N\x1f\x03\xa2\x1a)j\xe2\x08G7\xcdE\x1b\x06\xa3)%`\xfa-D\x14\xccD\x14\x11\xa17\x11j\xfa+L3\xcaG\x0e+\xae\x0e9j\xcb\x10E\x0f\xe3D\x0e\x17\xa2\x1b\x02k\xff*D(\xcdE\x1a\x10\xa5!!h\xc2\x17G1\xcbD.$\xa2\x18(g\xc1\x02G7\xcbG$\x07\xa2\x1b-j\xc0$L3\xcaD\x1c/\xa3\x1e4k\xff*F,\xedD\x1c\x17\xae\x1b\x08k\xfc/F+\xd0I#\n\xa9\x1d/h\xdd7K0\xfbD&\x07\xa3\x19>k\xff*E!\xccH"\x08\xa9\x1d/i\xea\x13E\x05\xe3E\x1a\x04\xa2\x1b-f\xdf:G7\xcdE\x1a\x10\xa5!!g\xe9;F!\xdaD\x1f\x0f\xa3\x1d\x03j\xda\x02F\x1f\xeaN\x1f\x03\xa2\x1a\x06j\xc3(F\n\xceD\x1b\x12\xaf 4j\xf8\x16L3\xcaG"-\xa3\x1d;j\xf96F,\xedE\x1a\x04\xa0\x117`\xfa-G7\xcbD\r\x13\xa3\x07\'g\xc1\x0bK\x00\xf4I5\x0b\xa9\x1d/j\xfa4F\x19\xfdD\x07>\xa2\x18*`\xfa-G4\xe3D\x02\x11\xa3\x1e\x03g\xf6.G6\xcdI\x14 \xa2\x18<`\xfa-F\n\xceD\x1b\x12\xa3)8k\xfe;E\x13\xecD.\x05\xae!/k\xfe\x0cJ\x0e\xd5D\x17&\xa0\x0f!`\xfa-G4\xccD\x07&\xa2\x19(k\xfe(F\x07\xc0N\x1f\x03\xa1:)j\xf1?D\x19\xf4D\x1f\x05\xa9\x1d/i\xeb\x05K \xdcD.>\xa0!\x06j\xeb9G5\xe7E\x1a\x04\xa1\x06(k\xff>@\x0f\xc4F\'9\xa2\x1f.j\xcb\nG6\xcdI$,\xa2\x19.i\xc1)G5\xc8D%\n\xa9\x1d/j\xf9\x01F0\xd1E\x1a\x04\xa3\x02\x08j\xf99K5\xedE\x1a\x06\xa9\x1d/k\xfd\x04F\n\xcfD&\x07\xa3\x19>f\xc76F1\xf1N\x1f\x03\xa0 \x01j\xfa9F0\xd1D\x00$\xa2\x18(i\xf65L3\xcaE\x1b\x02\xa3\x0f?j\xe0%K\x08\xecI,=\xae7\'`\xfa-F3\xd3D54\xa3\x05\x12k\xff(L3\xcaE\x18*\xa3\x00=j\xf9\x01K?\xc9E\x1a\x04\xae\x16\x0ck\xff>L3\xcaD&\x07\xa3\x19>j\xce:G7\xdcG?%\xa3,)g\xc6-G7\xebH"\x1c\xa3\x15\ni\xe8#L3\xcaE\x18\x05\xa3\x05\nk\xfe*G7\xcfD+\t\xa9\x1d/h\xdd+F8\xd8F5=\xa3\x1d)`\xfa-E"\xe2I\x0c\x15\xa3,\x12i\xc6\x04F"\xdeE\x19.\xa2\x18(h\xe1*G6\xd9B#\r\xa1%\x15k\xf8,F\x02\xedE\x1a\x04\xae&\x00k\xfe,E\x08\xceE\x19\x01\xa3\'&`\xfa-F0\xe6D\x1c\x18\xa2\x18(j\xe5\nF0\xdeI\x19$\xa2\x1b-j\xe27K\x0f\xc3N\x1f\x03\xa1:5g\xf9\x1cF\n\xceD\x1b\x12\xa2\x18(i\xe8+J\x0e\xc1N\x1f\x03\xa0\r\x11i\xcc\x04G6\xcdE\x19\x01\xaf88k\xfe*G6\xd9B#\r\xae\x0e9j\xe8=F3\xc6D\x1f/\xa3=\x00j\xd6\rL3\xcaE\x18*\xa3$*j\xc3)F7\xdbH"\x18\xa3\x1f\x14`\xfa-E\x0e\xe4D\x1f\x17\xa3\x1e4j\xe5\nG6\xcdG\x13\x1b\xa9\x1d/k\xfe,F!\xdaD\x05\x0b\xae&\tg\xc9\x13K\x19\xc2N\x1f\x03\xa3\x1d6j\xd0\x1aF+\xf7E\x1a\x06\xa9\x1d/k\xfd\x04F.\xd8D\x1c/\xae\x11,k\xff*K8\xe9E\x1a\x10\xa9\x1d/j\xc3)F7\xdbD+\x14\xa2\x199i\xda\x0bF\x02\xccI#\x03\xa2\x19\x0ef\xc72F;\xefG\r\r\xa9\x1d/k\xfd+F+\xefE\x1b\x04\xa2\x19*j\xce\'L3\xcaF8\x05\xa3\x16=h\xd0\x13F3\xccN\x1f\x03\xa0\x0c\x07g\xe9;F\x02\xf7G#*\xa3\x0c;k\xfc\x00G6\xcdF\x04\x04\xa2\x18<l\xc6#F.\xd8D\x1c/\xae\x11,' if payload == 126:extend_payload_len = hashstr[2:4] # \x0bp\x8fF 65535 字節 21845個漢字mask = hashstr[4:8] # xa1\xa3j\xc3)F7decoded = hashstr[8:] # 從第九個開始全是數據 # 當位運算結果等于126時,則第3-4個字節為數據長度 # 第5-8字節為mask 解密所需字符串 # 則數據為第9字節至結尾# hashstr = b'\x81\x8c\xc2J\xb3\x0c\xaa/\xdf`\xadj\xc4c\xb0&\xd7-' 12 if payload <= 125:extend_payload_len = Nonemask = hashstr[2:6] # \xc2J\xb3\x0c\xaadecoded = hashstr[6:] # /\xdf`\xadj\xc4c\xb0&\xd7-# 當位運算結果小于等于125時,則這個數字12就是數據的長度 # 第3-6字節為mask 解密所需字符串 # 則數據為第7字節至結尾 str_byte = bytearray() # mask_len = 4 # [0,1,2,3] for i in range(len(decoded)): # 12 - 0 1 2 3 4 5 6 7 8 9 10 11byte = decoded[i] ^ mask[i % 4] # i=0 str_byte.append(byte)print(str_byte.decode("utf8"))
?
?
websocket加密
import structdef res():msg_bytes = "hello".encode("utf8")token = b"\x81"length = len(msg_bytes) # 5if length < 126:token += struct.pack("B", length)elif length == 126:token += struct.pack("!BH", 126, length)else:token += struct.pack("!BQ", 127, length)msg = token + msg_bytesprint(msg)return msg
?
。...)
