Multiple headers as tuple

Hi,

This little patch introduces a new optional behavior wherby values of multiple headers are returned as a tuple rather than as a comma delimited string. The comma delimited string really doesn't work for cookies where comma is part of the cookie definition.

```
From f30d048134717d657ab519771a28588e1c3aafcc Mon Sep 17 00:00:00 2001
Date: Mon, 26 Dec 2016 18:57:36 +0000
Subject: [PATCH] New feature: if multiple headers are found, report them as tuple rather than comma joined string

---
http_parser/parser.pyx | 21 +++++++++++++++++++--
http_parser/pyparser.py | 13 ++++++++++---
2 files changed, 29 insertions(+), 5 deletions(-)
mode change 100644 => 100755 http_parser/parser.pyx
mode change 100644 => 100755 http_parser/pyparser.py

diff --git a/http_parser/parser.pyx b/http_parser/parser.pyx
old mode 100644
new mode 100755
index 2ca92d7..94c7ba4
--- a/http_parser/parser.pyx
+++ b/http_parser/parser.pyx
@@ -97,9 +97,24 @@ cdef int on_header_value_cb(http_parser *parser, char *at,
if res._last_field in res.headers:
hval = res.headers[res._last_field]
if not res._last_was_value:
- header_value = "%s, %s" % (hval, header_value)
+ if res.multiple_headers_as_tuple:
+ if type(hval)!=tuple:
+ tmp=(hval,)
+ header_value=tmp+(header_value,)
+ else:
+ header_value = "%s, %s" % (hval, header_value)
else:
header_value = "%s %s" % (hval, header_value)
+
+ #if name in self._headers:
+ # if self.multiple_headers_as_tuple:
+ # if type(self._headers[name])!=tuple:
+ # value=(self._headers[name])
+ # value+=(value,)
+ # else:
+ # value = "%s, %s" % (self._headers[name], value)
+
+

# add to headers
res.headers[res._last_field] = header_value
@@ -170,12 +185,14 @@ def get_errno_description(errno):

class _ParserData(object):

- def __init__(self, decompress=False, header_only=False):
+ def __init__(self, decompress=False, header_only=False,multiple_headers_as_tuple=False):
self.url = ""
self.body = []
self.headers = IOrderedDict()
self.header_only = header_only

+ self.multiple_headers_as_tuple=multiple_headers_as_tuple
+
self.decompress = decompress
self.decompressobj = None
self._decompress_first_try = True
diff --git a/http_parser/pyparser.py b/http_parser/pyparser.py
old mode 100644
new mode 100755
index 835ca34..93e9457
--- a/http_parser/pyparser.py
+++ b/http_parser/pyparser.py
@@ -39,9 +39,10 @@ class InvalidChunkSize(Exception):

class HttpParser(object):

- def __init__(self, kind=2, decompress=False):
+ def __init__(self, kind=2, decompress=False,multiple_headers_as_tuple=False):
self.kind = kind
self.decompress = decompress
+ self.multiple_headers_as_tuple=multiple_headers_as_tuple

# errors vars
self.errno = None
@@ -355,9 +356,15 @@ class HttpParser(object):
value.append(curr)
value = ''.join(value).rstrip()

- # multiple headers
+
+
if name in self._headers:
- value = "%s, %s" % (self._headers[name], value)
+ if self.multiple_headers_as_tuple:
+ if type(self._headers[name])!=tuple:
+ tmp=(self._headers[name],)
+ value=tmp+(value,)
+ else:
+ value = "%s, %s" % (self._headers[name], value)

# store new header value
self._headers[name] = value
--
2.7.4

```