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from __future__ import absolute_import, print_function, division
import netlib.http.url
from netlib import exceptions
def assemble_request(request):
if request.data.content is None:
raise exceptions.HttpException("Cannot assemble flow with missing content")
head = assemble_request_head(request)
body = b"".join(assemble_body(request.data.headers, [request.data.content]))
return head + body
def assemble_request_head(request):
first_line = _assemble_request_line(request.data)
headers = _assemble_request_headers(request.data)
return b"%s\r\n%s\r\n" % (first_line, headers)
def assemble_response(response):
if response.data.content is None:
raise exceptions.HttpException("Cannot assemble flow with missing content")
head = assemble_response_head(response)
body = b"".join(assemble_body(response.data.headers, [response.data.content]))
return head + body
def assemble_response_head(response):
first_line = _assemble_response_line(response.data)
headers = _assemble_response_headers(response.data)
return b"%s\r\n%s\r\n" % (first_line, headers)
def assemble_body(headers, body_chunks):
if "chunked" in headers.get("transfer-encoding", "").lower():
for chunk in body_chunks:
if chunk:
yield b"%x\r\n%s\r\n" % (len(chunk), chunk)
yield b"0\r\n\r\n"
else:
for chunk in body_chunks:
yield chunk
def _assemble_request_line(request_data):
"""
Args:
request_data (netlib.http.request.RequestData)
"""
form = request_data.first_line_format
if form == "relative":
return b"%s %s %s" % (
request_data.method,
request_data.path,
request_data.http_version
)
elif form == "authority":
return b"%s %s:%d %s" % (
request_data.method,
request_data.host,
request_data.port,
request_data.http_version
)
elif form == "absolute":
return b"%s %s://%s:%d%s %s" % (
request_data.method,
request_data.scheme,
request_data.host,
request_data.port,
request_data.path,
request_data.http_version
)
else:
raise RuntimeError("Invalid request form")
def _assemble_request_headers(request_data):
"""
Args:
request_data (netlib.http.request.RequestData)
"""
headers = request_data.headers.copy()
if "host" not in headers and request_data.scheme and request_data.host and request_data.port:
headers["host"] = netlib.http.url.hostport(
request_data.scheme,
request_data.host,
request_data.port
)
return bytes(headers)
def _assemble_response_line(response_data):
return b"%s %d %s" % (
response_data.http_version,
response_data.status_code,
response_data.reason,
)
def _assemble_response_headers(response):
return bytes(response.headers)
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