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[英]WebSocket handshake with Ruby and EM::WebSocket::Server
[英]Python Server Websocket Handshake Response
我想知道如何响应Python 3中的javascript websocket握手,但似乎无法弄清楚应该如何在服务器端响应。 我从客户网页收到了此请求:
GET / HTTP/1.1
Host: localhost:8080
Connection: Upgrade
Pragma: no-cache
Cache-Control: no-cache
Upgrade: websocket
Origin: http://www.w3schools.com
Sec-WebSocket-Version: 13
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.81 Safari/537.36
Accept-Encoding: gzip, deflate, sdch
Accept-Language: en-US,en;q=0.8
Sec-WebSocket-Key: euv7CmNNT22p59HbD3X7ww==
Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits
我可以说我大概不会在乎其中的大部分,我只需要知道要发送什么HTTP标头,就可以设置此websocket。 谢谢!
从此处的Python2代码转换而成: https ://gist.github.com/jkp/3136208
这是服务器端Python3代码,用于验证客户端浏览器并向其返回握手确认:
MAGIC = b'258EAFA5-E914-47DA-95CA-C5AB0DC85B11' # Fix key for handshake on server side
class WebSocketsHandler(socketserver.StreamRequestHandler):
def handshake(self):
data = self.request.recv(1024).strip()
hsKey = hsUpgrade = b''
for header in data.split(b'\r\n'):
if header.startswith(b'Sec-WebSocket-Key'): hsKey = header.split(b':')[1].strip()
if header.startswith(b'Upgrade'): hsUpgrade = header.split(b':')[1].strip()
if hsUpgrade != b"websocket": return
digest = b64encode(bytes.fromhex(sha1(hsKey + MAGIC).hexdigest())).decode('utf-8')
response = ('HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\n'
'Connection: Upgrade\r\nSec-WebSocket-Accept: {}\r\n\r\n'.format(digest))
print('Handshaking...{}'.format(digest))
self.handshake_done = self.request.send(response.encode('utf8'))
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