download_blob does not work when dockerized (urllib3.connection.HTTPSConnection Errno -2)

• Package Name: azure.storage.blob
• Package Version: 12.4.0
• Operating System: Alpine Linux
• Python Version: 3.8

Describe the bug Running the command download_stream = blobClient.download_blob() does not work when the application is dockerized (works fine when debugging from VS Code). The raised error is

azure.core.exceptions.ServiceRequestError: <urllib3.connection.HTTPSConnection object at 0x7f8c179660d0>: Failed to establish a new connection: [Errno -2] Name or service not known

Looking at the logs I spotted a difference between the 2 environments: the azure library is logging some info, and one of those is the request URL. When the application is dockerized, the url is (1), while (2) when debugging from VS Code (note that there is an extra " in (1))

1. Request URL: ‘https://datalake.blob.core.windows.net"/giorgio/projectgiorgio/web_upload/natural_language_processing%20%281%29%20%281%29%20%281%29.pdf/4’
2. Request URL: ‘https://datalake.blob.core.windows.net/giorgio/projectgiorgio/web_upload/natural_language_processing (1) (1) (1).pdf/4’

Here is the log produced during the error

To Reproduce Run the following Python code

import os
from azure.storage.blob import BlobServiceClient

container_name = "container_name"
blob_name = "blob_name"
blobServiceClient = BlobServiceClient.from_connection_string(os.getenv('STORAGE_CONNECTION_STRING'))
blobClient = blobServiceClient.get_blob_client(
    container_name,
    blob_name,
    snapshot=None
)
download_stream = blobClient.download_blob() # <- error thrown here
content = download_stream.readall()

inside a docker container using the image tiangolo/uvicorn-gunicorn:python3.8

Expected behavior The file is downloaded correctly

[Rafi99769]

I am facing the exact same issue!

[ifekxp]

Update:

I was able to make it working after adding “connection_verify=False” parameter to the end of BlobServiceClient.from_connection_string() and blob_client.upload_blob() methods!