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From GitBox <...@apache.org>
Subject [GitHub] [libcloud] c-w commented on a change in pull request #1340: Update Azure Blob Storage API version to 2016-05-31
Date Mon, 12 Aug 2019 13:15:57 GMT
c-w commented on a change in pull request #1340: Update Azure Blob Storage API version to 2016-05-31
URL: https://github.com/apache/libcloud/pull/1340#discussion_r312918469
 
 

 ##########
 File path: libcloud/common/azure.py
 ##########
 @@ -187,14 +187,17 @@ def _get_azure_auth_signature(self,
             else:
                 headers_copy[header] = value
 
+        is_change = method not in ("GET", "HEAD")
+        is_old_api = self.API_VERSION <= "2014-02-14"
+
         # Get the values for the headers in the specific order
         for header in special_header_keys:
             header = header.lower()  # Just for safety
             if header in headers_copy:
                 special_header_values.append(headers_copy[header])
-            elif header == "content-length" and method not in ("GET", "HEAD"):
-                # Must be '0' unless method is GET or HEAD
-                # https://docs.microsoft.com/en-us/rest/api/storageservices/authentication-for-the-azure-storage-services
+            elif header == "content-length" and is_change and is_old_api:
+                # For old API versions, the Content-Length header must be '0'
+                # https://docs.microsoft.com/en-us/rest/api/storageservices/authorize-with-shared-key#content-length-header-in-version-2014-02-14-and-earlier
                 special_header_values.append('0')
 
 Review comment:
   Added a test in 2eafc6d.

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