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< from cStringIO import StringIO
< from Queue import Queue
< regex_head = re.compile('^((http|https|HTTP|HTTPS)\://[^/]+)?(?P<method>\w+)\s+(?P<uri>\S+)\s+(?P<protocol>\S+)')
< regex_header = re.compile('\s*(?P<key>.*?)\s*\:\s*(?P<value>.*?)\s*$')
< regex_chunk = re.compile('^(?P<size>\w+)')
---
> from io import StringIO
> from queue import Queue
> regex_head = re.compile(b'^((http|https|HTTP|HTTPS)\://[^/]+)?(?P<method>\w+)\s+(?P<uri>\S+)\s+(?P<protocol>\S+)')
> regex_header = re.compile(b'\s*(?P<key>.*?)\s*\:\s*(?P<value>.*?)\s*$')
> regex_chunk = re.compile(b'^(?P<size>\w+)')
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<                     break            
---
>                     break  
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<         uri = match.group('uri')
---
>         uri = str(match.group('uri'))
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<             if line == '\r\n':
---
>             if line == b'\r\n':
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<             key = match.group('key').upper().replace('-','_')
<             if isinstance(key,unicode):
<                 key = key.encode('ISO-8859-1')
<             value = match.group('value')
---
>             key = str(match.group('key')).upper().replace('-','_')
>             value = str(match.group('value'))
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<                 headers.append(('Content-Length',len(data_items[0])))
---
>                 headers.append(('Content-Length',len(bytes(data_items[0],'utf8'))))
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<         client_socket.sendall(data)
---
>         client_socket.sendall(bytes(data,'utf8'))
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<                     client_socket.sendall('%x\r\n%s\r\n' % (len(data),data))
---
>                     client_socket.sendall(bytes('%x\r\n%s\r\n' % (len(data),data),'utf8'))
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<                     client_socket.sendall(data)
<             except socket.error, e:
---
>                     client_socket.sendall(bytes(data,'utf8'))
>             except socket.error as e:
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<             client_socket.sendall('0\r\n')
---
>             client_socket.sendall(b'0\r\n')
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<                     "HTTP/1.0 %s\r\nContent-Length: 0\r\nContent-Type: text/plain\r\n\r\n" % status)
---
>                 b"HTTP/1.0 %s\r\nContent-Length: 0\r\nContent-Type: text/plain\r\n\r\n" % status)
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<         print 'Experimental "Sneaky" WSGI web server. Starting...'
---
>         print ('Experimental "Sneaky" WSGI web server. Starting...')
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<     print 'serving from: '+address
---
>     print ('serving from: '+address)