def request(self, uri, method="GET", body=None, headers=None, redirections=httplib2.DEFAULT_MAX_REDIRECTS, connection_type=None):
"""request handler with thread safety hacked in"""
try:
if headers is None:
headers = {}
else:
headers = httplib2._normalize_headers(headers)
if not headers.has_key('user-agent'):
headers['user-agent'] = "Python-httplib2/%s" % httplib2.__version__
uri = httplib2.iri2uri(uri)
(scheme, authority, request_uri, defrag_uri) = httplib2.urlnorm(uri)
domain_port = authority.split(":")[0:2]
if len(domain_port) == 2 and domain_port[1] == '443' and scheme == 'http':
scheme = 'https'
authority = domain_port[0]
conn_key = scheme+":"+authority
def get_conn(conn_key):
if conn_key in self.connections:
conn = self.connections[conn_key]
if type(conn) is list:
for c in conn:
if not getattr(c, 'busy', True):
return c
else: return c
if type(conn) is list:
return None
conn = get_conn(conn_key)
if conn is None:
if not connection_type:
connection_type = (scheme == 'https') and httplib2.HTTPSConnectionWithTimeout or httplib2.HTTPConnectionWithTimeout
certs = list(self.certificates.iter(authority))
if scheme == 'https' and certs:
conn = connection_type(authority, key_file=certs[0][0],
cert_file=certs[0][1], timeout=self.timeout, proxy_info=self.proxy_info)
self.connections.setdefault(conn_key, []).append(conn)
else:
conn = connection_type(authority, timeout=self.timeout, proxy_info=self.proxy_info)
self.connections.setdefault(conn_key, []).append(conn)
conn.set_debuglevel(httplib2.debuglevel)
conn.busy = True
if method in ["GET", "HEAD"] and 'range' not in headers and 'accept-encoding' not in headers:
headers['accept-encoding'] = 'deflate, gzip'
info = httplib2.email.Message.Message()
cached_value = None
if self.cache:
cachekey = defrag_uri
cached_value = self.cache.get(cachekey)
if cached_value:
try:
info, content = cached_value.split('\r\n\r\n', 1)
feedparser = httplib2.email.FeedParser.FeedParser()
feedparser.feed(info)
info = feedparser.close()
feedparser._parse = None
except IndexError:
self.cache.delete(cachekey)
cachekey = None
cached_value = None
else: cachekey = None
if method in self.optimistic_concurrency_methods and self.cache and info.has_key('etag') and not self.ignore_etag and 'if-match' not in headers:
# http://www.w3.org/1999/04/Editing/
headers['if-match'] = info['etag']
if method not in ["GET", "HEAD"] and self.cache and cachekey:
# RFC 2616 Section 13.10
self.cache.delete(cachekey)
if cached_value and method in ["GET", "HEAD"] and self.cache and 'range' not in headers:
if info.has_key('-x-permanent-redirect-url'):
(response, new_content) = self.request(info['-x-permanent-redirect-url'], "GET", headers = headers, redirections = redirections - 1)
response.previous = Response(info)
response.previous.fromcache = True
else:
entry_disposition = httplib2._entry_disposition(info, headers)
if entry_disposition == "FRESH":
if not cached_value:
info['status'] = '504'
content = ""
response = Response(info)
if cached_value:
response.fromcache = True
return (response, content)
if entry_disposition == "STALE":
if info.has_key('etag') and not self.ignore_etag and not 'if-none-match' in headers:
headers['if-none-match'] = info['etag']
if info.has_key('last-modified') and not 'last-modified' in headers:
headers['if-modified-since'] = info['last-modified']
elif entry_disposition == "TRANSPARENT": pass
(response, new_content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey)
if response.status == 304 and method == "GET":
# Rewrite the cache entry with the new end-to-end headers
# Take all headers that are in response
# and overwrite their values in info.
# unless they are hop-by-hop, or are listed in the connection header.
for key in httplib2._get_end2end_headers(response):
info[key] = response[key]
merged_response = Response(info)
if hasattr(response, "_stale_digest"):
merged_response._stale_digest = response._stale_digest
httplib2._updateCache(headers, merged_response, content, self.cache, cachekey)
response = merged_response
response.status = 200
response.fromcache = True
elif response.status == 200:
content = new_content
else:
self.cache.delete(cachekey)
content = new_content
else:
cc = httplib2._parse_cache_control(headers)
if cc.has_key('only-if-cached'):
info['status'] = '504'
response = Response(info)
content = ""
else:
(response, content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey)
except Exception, e:
if self.force_exception_to_status_code:
if isinstance(e, httplib2.HttpLib2ErrorWithResponse):
response = e.response
content = e.content
response.status = 500
response.reason = str(e)
elif isinstance(e, socket.timeout):
content = "Request Timeout"
response = Response( {
"content-type": "text/plain",
"status": "408",
"content-length": len(content)
})
response.reason = "Request Timeout"
else:
content = str(e)
response = Response( {
"content-type": "text/plain",
"status": "400",
"content-length": len(content)
})
response.reason = "Bad Request"
else: raise
