def __init__(self, conn): self.stream = SocketWrapper(conn) headers, method, resource, version = self.parse() self.headers = HTTPHeaders(headers) self.method = method self.resource = resource self.version = version
class HTTPRequest(object):
def __init__(self, conn):
self.stream = SocketWrapper(conn)
headers, method, resource, version = self.parse()
self.headers = HTTPHeaders(headers)
self.method = method
self.resource = resource
self.version = version
def skip_ws(self):
while True:
x = self.stream.read(1)
if not x.isspace():
self.stream.seek(-1, 1)
return
def get_int(self):
x = None
result = ''
while True:
x = self.stream.read(1)
if not x.isdigit():
self.stream.seek(-1, 1)
return result
result += x
def extract_version(self):
self.skip_ws()
http_literal = self.stream.read(4)
if http_literal != 'HTTP':
raise ParsingError()
ch = self.stream.read(1)
if ch != '/':
raise ParsingError()
major_version = self.get_int()
ch = self.stream.read(1)
if ch != '.':
raise ParsingError()
minor_version = self.get_int()
return major_version, minor_version
def parse(self):
# method
method = self.stream.read(3)
if method != 'GET':
raise NotSupportedMethod()
# resource
self.skip_ws()
resource = ''
while True:
c = self.stream.read(1)
if c.isspace():
break
resource += c
# version
version = self.extract_version()
self.skip_ws()
headers = {}
while True:
# key
key = ''
while True:
c = self.stream.read(1)
if c == ':':
break
key += c
self.skip_ws()
value = ''
while True:
c = self.stream.read(1)
if c == '\r':
c = self.stream.read(1)
if c == '\n':
break
value += c
headers[key] = value
# end of headers
s = self.stream.read(2)
if s == '\r\n':
break
# push the two characters back.
self.stream.seek(-2, 1)
return headers, method, resource, version
