48 lines
2.4 KiB
Python
48 lines
2.4 KiB
Python
"""Direct authenticated transport to Deck's own ComfyUI, including WebSocket."""
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import http.client
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import socket
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import select
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from video_proxy import MAX_BODY,REQUEST_HEADERS,HOP_HEADERS
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def relay(handler,port):
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if handler.headers.get('Transfer-Encoding'):raise ValueError('Content-Length erforderlich.')
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length=int(handler.headers.get('Content-Length','0'))
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if not 0<=length<=MAX_BODY:raise ValueError('Maximal 256 MiB pro Upload.')
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if handler.headers.get('Upgrade','').lower()=='websocket':
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with socket.create_connection(('127.0.0.1',port),timeout=10) as upstream:
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lines=[f'{handler.command} {handler.path} HTTP/1.1',f'Host: 127.0.0.1:{port}']
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for key in ('Upgrade','Connection','Sec-WebSocket-Key','Sec-WebSocket-Version','Sec-WebSocket-Protocol'):
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if handler.headers.get(key):lines.append(key+': '+handler.headers[key])
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upstream.sendall(('\r\n'.join(lines)+'\r\n\r\n').encode());head=b''
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while b'\r\n\r\n' not in head:
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chunk=upstream.recv(4096)
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if not chunk:raise ValueError('WebSocket-Verbindung abgebrochen.')
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head+=chunk
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if len(head)>65536:raise ValueError('Ungültige WebSocket-Antwort.')
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handler.sent=True;handler.connection.sendall(head);upstream.settimeout(None)
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while True:
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readable,_,_=select.select([upstream,handler.connection],[],[],60)
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if not readable:continue
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for source in readable:
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data=source.recv(65536)
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if not data:return
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(handler.connection if source is upstream else upstream).sendall(data)
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else:
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upstream=http.client.HTTPConnection('127.0.0.1',port,timeout=3600)
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try:
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headers={k:v for k,v in handler.headers.items() if k.lower() in REQUEST_HEADERS};headers['Content-Length']=str(length)
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upstream.putrequest(handler.command,handler.path)
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for key,value in headers.items():upstream.putheader(key,value)
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upstream.endheaders();remaining=length
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while remaining:
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chunk=handler.rfile.read(min(1024*1024,remaining))
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if not chunk:raise ValueError('Unvollständiger Upload.')
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upstream.send(chunk);remaining-=len(chunk)
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response=upstream.getresponse();handler.sent=True;handler.send_response(response.status)
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for key,value in response.getheaders():
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if key.lower() not in HOP_HEADERS|{'server','date'}:handler.send_header(key,value)
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handler.send_header('Connection','close');handler.end_headers();handler.close_connection=True
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if handler.command!='HEAD':
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while chunk:=response.read(1024*1024):handler.wfile.write(chunk)
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finally:upstream.close()
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