websocket 群聊,单聊,加密,解密
群聊
from flask import Flask, request, render_templatefrom geventwebsocket.handler import WebSocketHandlerfrom gevent.pywsgi import WSGIServer
from geventwebsocket.websocket import WebSocket
app = Flask(__name__) # type:Flask
user_socket_list = []
@app.route("/ws")def ws(): user_socket = request.environ.get("wsgi.websocket") # type:WebSocket if user_socket: user_socket_list.append(user_socket) print(len(user_socket_list), user_socket_list) while 1: msg = user_socket.receive() print(msg) for usocket in user_socket_list: if user_socket == usocket: continue try: usocket.send(msg) except: continue
@app.route("/")def index(): return render_template("ws.html")
if __name__ == '__main__': # app.run("0.0.0.0",5000,debug=True) http_serv = WSGIServer(("0.0.0.0", 5000), app, handler_class=WebSocketHandler) http_serv.serve_forever()**************************************************************************************************************************************************
<!DOCTYPE html><html lang="zh-CN"><head> <meta http-equiv="content-Type" charset="UTF-8"> <meta http-equiv="x-ua-compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Title</title></head><body><p>发送内容：<input type="text" id="message"><button onclick="send_msg()">发送消息</button></p><div id="msg_list" style="width: 500px;">
</div></body><script type="application/javascript"> var ws = new WebSocket("ws://127.0.0.1:5000/ws"); // ws.onopen = function(){ // alert("欢迎来到S14群喷"); // }; ws.onmessage = function (ws_status) { console.log(ws_status.data); var ptag = document.createElement("p"); ptag.innerText = ws_status.data; document.getElementById("msg_list").appendChild(ptag); };
function send_msg() { var msg = document.getElementById("message").value; var ptag = document.createElement("p"); ptag.style.cssText = "text-align: right;"; ptag.innerText = msg; document.getElementById("msg_list").appendChild(ptag); ws.send(msg); }</script></html>
单聊
from flask import Flask, request, render_templatefrom geventwebsocket.handler import WebSocketHandlerfrom gevent.pywsgi import WSGIServerimport json
from geventwebsocket.websocket import WebSocket
app = Flask(__name__) # type:Flask
user_socket_dict = {}
@app.route("/ws/<user>")def ws(user): user_socket = request.environ.get("wsgi.websocket") # type:WebSocket if user_socket: user_socket_dict[user] = user_socket print(len(user_socket_dict), user_socket_dict) while 1: msg = user_socket.receive() print(msg) # b"{from_user:jinwangba ,to_user:yinwangba,msg:"doushidawangba"}" msg_dict = json.loads(msg) to_usocket = user_socket_dict.get(msg_dict.get("to_user")) to_usocket.send(json.dumps({"from_user": user, "to_user": msg_dict.get("to_user"), "msg": msg_dict.get("msg")}))
@app.route("/")def index(): return render_template("wsd.html")
if __name__ == '__main__': # app.run("0.0.0.0",5000,debug=True) http_serv = WSGIServer(("0.0.0.0", 5000), app, handler_class=WebSocketHandler) http_serv.serve_forever()
*********************************************************************************************************************************************************************************************
<!DOCTYPE html><html lang="zh-CN"><head> <meta http-equiv="content-Type" charset="UTF-8"> <meta http-equiv="x-ua-compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Title</title></head><body><p>您的昵称：<input type="text" id="nick"><button onclick="openws()">进入聊天室</button></p><p>给<input type="text" id="to_user">发送：<input type="text" id="message"><button onclick="send_msg()">发送消息</button></p><div id="msg_list" style="width: 500px;">
</div></body><script type="application/javascript"> var ws = null; // ws.onopen = function(){ // alert("欢迎来到S14群喷"); // };
function openws(){ var nick = document.getElementById("nick").value; ws = new WebSocket("ws://127.0.0.1:5000/ws/"+nick); ws.onmessage = function (ws_status) { console.log(ws_status.data); var msg_obj = JSON.parse(ws_status.data); var ptag = document.createElement("p"); ptag.innerText = msg_obj.from_user + " : " +msg_obj.msg; document.getElementById("msg_list").appendChild(ptag); }; }
function send_msg() { var msg = document.getElementById("message").value; var from_user = document.getElementById("nick").value; var to_user = document.getElementById("to_user").value; var ptag = document.createElement("p"); ptag.style.cssText = "text-align: right;"; ptag.innerText = msg + " : "+ from_user; document.getElementById("msg_list").appendChild(ptag); var msg_obj = { msg:msg, from_user:from_user, to_user:to_user }; ws.send(JSON.stringify(msg_obj)); };
</script></html>
加密
加密:
1 import struct
2 msg_bytes = "hello".encode("utf8")
3 token = b"\x81"
4 length = len(msg_bytes)
5
6 if length < 126:
7 token += struct.pack("B", length)
8 elif length == 126:
9 token += struct.pack("!BH", 126, length)
10 else:
11 token += struct.pack("!BQ", 127, length)
12
13 msg = token + msg_bytes
14
15 print(msg)
解密
解密:
1 # b'\x81\x83\xceH\xb6\x85\xffz\x85'
2
3 hashstr = b'\x81\x83\xceH\xb6\x85\xffz\x85'
4 # b'\x81 \x83 \xceH\xb6\x85\xffz\x85'
5
6 # 将第二个字节也就是 \x83 第9-16位 进行与127进行位运算
7 payload = hashstr[1] & 127
8 print(payload)
9 if payload == 127:
10 extend_payload_len = hashstr[2:10]
11 mask = hashstr[10:14]
12 decoded = hashstr[14:]
13 # 当位运算结果等于127时,则第3-10个字节为数据长度
14 # 第11-14字节为mask 解密所需字符串
15 # 则数据为第15字节至结尾
16
17 if payload == 126:
18 extend_payload_len = hashstr[2:4]
19 mask = hashstr[4:8]
20 decoded = hashstr[8:]
21 # 当位运算结果等于126时,则第3-4个字节为数据长度
22 # 第5-8字节为mask 解密所需字符串
23 # 则数据为第9字节至结尾
24
25
26 if payload <= 125:
27 extend_payload_len = None
28 mask = hashstr[2:6]
29 decoded = hashstr[6:]
30
31 # 当位运算结果小于等于125时,则这个数字就是数据的长度
32 # 第3-6字节为mask 解密所需字符串
33 # 则数据为第7字节至结尾
34
35 str_byte = bytearray()
36
37 for i in range(len(decoded)):
38 byte = decoded[i] ^ mask[i % 4]
39 str_byte.append(byte)
40
41 print(str_byte.decode("utf8"))
1 # b'\x81\x83\xceH\xb6\x85\xffz\x85'
2
3 hashstr = b'\x81\x83\xceH\xb6\x85\xffz\x85'
4 # b'\x81 \x83 \xceH\xb6\x85\xffz\x85'
5
6 # 将第二个字节也就是 \x83 第9-16位 进行与127进行位运算
7 payload = hashstr[1] & 127
8 print(payload)
9 if payload == 127:
10 extend_payload_len = hashstr[2:10]
11 mask = hashstr[10:14]
12 decoded = hashstr[14:]
13 # 当位运算结果等于127时,则第3-10个字节为数据长度
14 # 第11-14字节为mask 解密所需字符串
15 # 则数据为第15字节至结尾
16
17 if payload == 126:
18 extend_payload_len = hashstr[2:4]
19 mask = hashstr[4:8]
20 decoded = hashstr[8:]
21 # 当位运算结果等于126时,则第3-4个字节为数据长度
22 # 第5-8字节为mask 解密所需字符串
23 # 则数据为第9字节至结尾
24
25
26 if payload <= 125:
27 extend_payload_len = None
28 mask = hashstr[2:6]
29 decoded = hashstr[6:]
30
31 # 当位运算结果小于等于125时,则这个数字就是数据的长度
32 # 第3-6字节为mask 解密所需字符串
33 # 则数据为第7字节至结尾
34
35 str_byte = bytearray()
36
37 for i in range(len(decoded)):
38 byte = decoded[i] ^ mask[i % 4]
39 str_byte.append(byte)
40
41 print(str_byte.decode("utf8"))
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