Support generic headers and HTTP timeouts

Instead of solely urllib3 header support, there is now the ability to pass generic headers such as "Authorization" in addition to the urllib3 headers (e.g. "basic_auth").  Furthermore, http timeouts are honored in the FileDownloader.
Add test to check headers

docs/api.md

@@ -95,7 +95,7 @@ progress_hooks (list): List of callbacks
 
 data_dir (str): Path to custom update folder
 
-headers (dict): A urllib3.utils.make_headers compatible dictionary
+headers (dict): A dictionary of generic and/or urllib3.utils.make_headers compatible headers
 
 test (bool): Used to initialize a test client
 

pyupdater/client/__init__.py

@@ -85,7 +85,7 @@ class Client(object):
 
     data_dir (str): Path to custom update folder
 
-    headers (dict): A urllib3.utils.make_headers compatible dictionary
+    headers (dict): A dictionary of generic and/or urllib3.utils.make_headers compatible headers
 
     test (bool): Used to initialize a test client
 
@@ -130,8 +130,6 @@ def __init__(self, obj, **kwargs):
                 raise SyntaxError("progress_hooks must be provided as a list.")
             self.progress_hooks += progress_hooks
 
-        obj.URLLIB3_HEADERS = headers
-
         # A super dict used to save config info & be dot accessed
         config = _Config()
         config.from_object(obj)
@@ -198,8 +196,8 @@ def __init__(self, obj, **kwargs):
         # The name of the key file to download
         self.key_file = settings.KEY_FILE_FILENAME
 
-        # urllib3 headers
-        self.urllib3_headers = obj.URLLIB3_HEADERS
+        # headers
+        self.headers = headers
 
         # Creating data & update directories
         self._setup()
@@ -244,7 +242,7 @@ def _gen_file_downloader_options(self):
             "http_timeout": self.http_timeout,
             "max_download_retries": self.max_download_retries,
             "progress_hooks": self.progress_hooks,
-            "urllib3_headers": self.urllib3_headers,
+            "headers": self.headers,
             "verify": self.verify,
         }
 
@@ -317,7 +315,7 @@ def _update_check(self, name, version, channel, strict):
             "verify": self.verify,
             "max_download_retries": self.max_download_retries,
             "progress_hooks": list(set(self.progress_hooks)),
-            "urllib3_headers": self.urllib3_headers,
+            "headers": self.headers,
             "downloader": self.downloader,
         }
 
@@ -436,7 +434,8 @@ def _get_manifest_from_http(self):
                         vf,
                         self.update_urls,
                         verify=self.verify,
-                        urllb3_headers=self.urllib3_headers,
+                        headers=self.headers,
+                        http_timeout=self.http_timeout
                     )
                 data = fd.download_verify_return()
                 try:
@@ -468,7 +467,8 @@ def _get_key_data(self):
                     self.key_file,
                     self.update_urls,
                     verify=self.verify,
-                    urllb3_headers=self.urllib3_headers,
+                    headers=self.headers,
+                    http_timeout=self.http_timeout
                 )
             data = fd.download_verify_return()
             try:

pyupdater/client/downloader.py

@@ -24,6 +24,7 @@
 # ------------------------------------------------------------------------------
 from __future__ import unicode_literals
 import hashlib
+import inspect
 import logging
 import os
 import time
@@ -131,7 +132,9 @@ def __init__(self, *args, **kwargs):
         self.content_length = None
 
         # Extra headers
-        self.headers = kwargs.get("urllb3_headers")
+        self.headers = kwargs.get("headers")
+
+        self.http_timeout = kwargs.get("http_timeout")
 
         if self.verify is True:
             self.http_pool = self._get_http_pool()
@@ -141,15 +144,25 @@ def __init__(self, *args, **kwargs):
     def _get_http_pool(self, secure=True):
         if secure:
             _http = urllib3.PoolManager(
-                cert_reqs=str("CERT_REQUIRED"), ca_certs=certifi.where()
+                cert_reqs=str("CERT_REQUIRED"), ca_certs=certifi.where(), timeout=self.http_timeout
             )
         else:
-            _http = urllib3.PoolManager()
+            _http = urllib3.PoolManager(timeout=self.http_timeout)
 
         if self.headers:
-            _headers = urllib3.util.make_headers(**self.headers)
+            if six.PY3:
+                # Python3
+                urllib_keys = inspect.getfullargspec(urllib3.util.make_headers).args
+            else:
+                # Python2 fallback
+                urllib_keys = inspect.getargspec(urllib3.util.make_headers).args
+            urllib_headers = {header: value for header, value in six.iteritems(self.headers) if header in urllib_keys}
+            other_headers = {header: value for header, value in six.iteritems(self.headers) if header not in urllib_keys}
+            _headers = urllib3.util.make_headers(**urllib_headers)
+            _headers.update(other_headers)
             _http.headers.update(_headers)
         log.debug(_http.headers)
+        log.debug("HTTP Timeout is " + str(self.http_timeout))
         return _http
 
     def download_verify_write(self):

pyupdater/client/patcher.py

@@ -67,7 +67,9 @@ class Patcher(object):
 
         max_download_retries (int): Number of times to retry a download
 
-        urllib3_headers (dict): Headers to be used with http request
+        headers (dict): Headers to be used with http request.  Accepts urllib3 and generic headers.
+
+        http_timeout (int): HTTP timeout or None
     """
 
     def __init__(self, **kwargs):
@@ -81,8 +83,9 @@ def __init__(self, **kwargs):
         self.update_urls = kwargs.get("update_urls", [])
         self.verify = kwargs.get("verify", True)
         self.max_download_retries = kwargs.get("max_download_retries")
-        self.urllib3_headers = kwargs.get("urllib3_headers")
+        self.headers = kwargs.get("headers")
         self.downloader = kwargs.get("downloader")
+        self.http_timeout = kwargs.get("http_timeout")
 
         # Progress hooks to be called
         self.progress_hooks = kwargs.get("progress_hooks", [])
@@ -302,7 +305,8 @@ def _download_verify_patches(self):
                         hexdigest=p["patch_hash"],
                         verify=self.verify,
                         max_download_retries=self.max_download_retries,
-                        urllb3_headers=self.urllib3_headers,
+                        headers=self.headers,
+                        http_timeout=self.http_timeout
                     )
 
                 # Attempt to download resource

pyupdater/client/updates.py

@@ -418,8 +418,8 @@ def __init__(self, data=None):
         # Weather or not the verify the https connection
         self.verify = data.get("verify", True)
 
-        # Extra headers to pass to urllib3
-        self.urllib3_headers = data.get("urllib3_headers")
+        # Extra headers
+        self.headers = data.get("headers")
 
         # The amount of times to retry a url before giving up
         self.max_download_retries = data.get("max_download_retries")
@@ -684,7 +684,8 @@ def _full_update(self):
                     verify=self.verify,
                     progress_hooks=self.progress_hooks,
                     max_download_retries=self.max_download_retries,
-                    urllb3_headers=self.urllib3_headers,
+                    headers=self.headers,
+                    http_timeout=self.http_timeout
                 )
             result = fd.download_verify_write()
             if result:

tests/test_downloader.py

@@ -63,10 +63,20 @@ def test_return_fail(self, download_max_size):
 
 
 @pytest.mark.usefixtue("cleandir")
-class TestBasicAuth(object):
+class TestBasicAuthUrlLib(object):
     def test_basic_auth(self):
         headers = {"basic_auth": "user:pass"}
-        fd = FileDownloader("test", ["test"], urllb3_headers=headers)
+        fd = FileDownloader("test", ["test"], headers=headers)
+        http = fd._get_http_pool(secure=True)
+        sc = http.request("GET", "https://httpbin.org/basic-auth/user/pass").status
+        assert sc == 200
+
+
+@pytest.mark.usefixtue("cleandir")
+class TestAuthorizationHeader(object):
+    def test_basic_auth(self):
+        headers = {"Authorization": "Basic dXNlcjpwYXNz"}
+        fd = FileDownloader("test", ["test"], headers=headers)
         http = fd._get_http_pool(secure=True)
         sc = http.request("GET", "https://httpbin.org/basic-auth/user/pass").status
         assert sc == 200