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import logging
import urllib.parse as parse
class Helpers:
@staticmethod
def configure_logger(level=logging.INFO, handler=None):
logger = Helpers.get_logger()
if handler is None:
handler = logging.StreamHandler()
handler.setFormatter(
logging.Formatter(
'%(asctime)s - %(name)s - %(levelname)s - %(message)s'))
handler.setLevel(level)
logger.addHandler(handler)
logger.setLevel(level)
@staticmethod
def get_logger():
return logging.getLogger("SignalRCoreClient")
@staticmethod
def has_querystring(url):
return "?" in url
@staticmethod
def split_querystring(url):
parts = url.split("?")
return parts[0], parts[1]
@staticmethod
def replace_scheme(
url,
root_scheme,
source,
secure_source,
destination,
secure_destination):
url_parts = parse.urlsplit(url)
if root_scheme not in url_parts.scheme:
if url_parts.scheme == secure_source:
url_parts = url_parts._replace(scheme=secure_destination)
if url_parts.scheme == source:
url_parts = url_parts._replace(scheme=destination)
return parse.urlunsplit(url_parts)
@staticmethod
def websocket_to_http(url):
return Helpers.replace_scheme(
url,
"http",
"ws",
"wss",
"http",
"https")
@staticmethod
def http_to_websocket(url):
return Helpers.replace_scheme(
url,
"ws",
"http",
"https",
"ws",
"wss"
)
@staticmethod
def get_negotiate_url(url):
querystring = ""
if Helpers.has_querystring(url):
url, querystring = Helpers.split_querystring(url)
url_parts = parse.urlsplit(Helpers.websocket_to_http(url))
negotiate_suffix = "negotiate"\
if url_parts.path.endswith('/')\
else "/negotiate"
url_parts = url_parts._replace(path=url_parts.path + negotiate_suffix)
return parse.urlunsplit(url_parts) \
if querystring == "" else\
parse.urlunsplit(url_parts) + "?" + querystring
@staticmethod
def encode_connection_id(url, id):
url_parts = parse.urlsplit(url)
query_string_parts = parse.parse_qs(url_parts.query)
query_string_parts["id"] = id
url_parts = url_parts._replace(
query=parse.urlencode(
query_string_parts,
doseq=True))
return Helpers.http_to_websocket(parse.urlunsplit(url_parts))
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