Allow for HTTPS proxy to openwhisk via env var, using https_proxy var name matching cloudfoundy http://docs.cloudfoundry.org/cf-cli/http-proxy.html.
Supported only for HTTPS endpoints. Fixes issue #586.
diff --git a/tools/cli/wskutil.py b/tools/cli/wskutil.py
index 83a2c6b..88093d5 100644
--- a/tools/cli/wskutil.py
+++ b/tools/cli/wskutil.py
@@ -50,15 +50,17 @@
     required = True if auth is None else False
     subcmd.add_argument('-u', '--auth', help='authorization key', default=auth, required=required)
 
-def request(method, urlString, body = '', headers = {}, auth = None, verbose = False):
+def request(method, urlString, body = '', headers = {}, auth = None, verbose = False, https_proxy = os.getenv('https_proxy', None)):
     url = urlparse(urlString)
     if url.scheme == 'http':
         conn = httplib.HTTPConnection(url.netloc)
     else:
         if hasattr(ssl, '_create_unverified_context'):
-            conn = httplib.HTTPSConnection(url.netloc, context=ssl._create_unverified_context())
+            conn = httplib.HTTPSConnection(url.netloc if https_proxy is None else https_proxy, context=ssl._create_unverified_context())
         else:
-            conn = httplib.HTTPSConnection(url.netloc)
+            conn = httplib.HTTPSConnection(url.netloc if https_proxy is None else https_proxy)
+        if https_proxy:
+            conn.set_tunnel(url.netloc)
 
     if auth != None:
         auth = base64.encodestring(auth).replace('\n', '')