[Python-Dev] BaseHTTPServer parsing

Mon, 2 Jun 2003 01:43:14 -0600

Hi,
 I would like to use the code in BaseHTTPServer to parse the incoming
message for Twisted. One way is to write an adapter which looks like
class _ParseHTTPRequest(BaseHTTPServer.BaseHTTPRequestHandler):
 def __init__(self):
 # Don't worry about doing the real constructor; I just want access 
to
 # the 'parse_request' function.
 # I could also say "parse_request = 
BaseHTTPServer.BaseHTTPRequestHandler.parse_request
 pass
 def parse(self, raw_requestline, infile):
 self.raw_requestline = raw_requestline
 self.rfile = infile
 self.error_info = False
 self.parse_request()
 def send_error(self, code, message=None):
 self.error_info = (code, message)
def parse(raw_requestline, infile):
 p = _ParseHTTPRequest()
 p.parse(raw_requestline, infile)
 return p
# Then in the Twisted code
 def lineReceived(self, line):
 if self.__first_line:
 self.raw_requestline = line
 self.__first_line = 0
 self.rfile = StringIO()
 else:
 self.rfile.write(line + "\n")
 if line == "": # end of headers
 p = _ParseHTTPRequest()
 if p.error_info is not None:
 ... handle errors
 else:
 work with p.headers, p.comand, etc.
That should work, but I note that the 'parse_request' function is 
listed as
"internal", which I take to mean that people like me shouldn't make any
assumptions that it even exists, much less that I can make use of it 
for my
own nefarious reasons.
Can I get a better guarantee than that? I ask because I would rather 
that
Twisted and Python work the same way (esp. since the Python code is 
generally
more robust).
					Andrew
					dalke@dalkescientific.com