Airflow standalone webserver assets net::ERR_INVALID_HTTP_RESPONSE

[dtomasi]

Hi there,

I'm using airflow standalone to start a local airflow instance for development and debugging purposes. This works without any error occurring when starting up airflow. However, when I open airflow in the browser, not any of the assests (css and javascript) can be loaded in chrome, as it fails with 'net::ERR_INVALID_HTTP_RESPONSE' in Chromium browsers. I've then tried to use Firefox to make sure that this is not a pure Chrome issue. In Firefox I at least get the content loaded, but noticed that there are HTTP Headers appended to all these responses like so:

... usual asset content;
Server: gunicorn
Date: Tue, 15 Oct 2024 13:46:14 GMT
Connection: close
Content-Disposition: inline; filename=moment.af388b38f7330f0c8f38.js
Content-Type: text/javascript; charset=utf-8
Content-Length: 842059
Last-Modified: Mon, 14 Oct 2024 06:33:31 GMT
Cache-Control: public, max-age=43200
Expires: Wed, 16 Oct 2024 01:46:14 GMT
ETag: "1728887611.9596012-842059-38026915"
X-Robots-Tag: noindex, nofollow
Set-Cookie: session=06d1c7ba-5ab2-4f06-96d2-5468e82b6d5f.Y4-RtShXnc3KI2SbsT_V72KIglM; Expires=Thu, 14 Nov 2024 13:46:14 GMT; HttpOnly; Path=/; SameSite=L

Running on:

Apache Airflow
version                | 2.10.2                                                                                                   
executor               | SequentialExecutor                                                                                       
task_logging_handler   | airflow.utils.log.file_task_handler.FileTaskHandler                                                      
sql_alchemy_conn       | sqlite:///PROJECT_PATH/caplib/airflow.db
dags_folder            | PROJECT_PATH/caplib/dags                
plugins_folder         | PROJECT_PATH/caplib/plugins             
base_log_folder        | PROJECT_PATH/caplib/logs                
remote_base_log_folder |                                                                                                          
                                                                                                                                  

System info
OS              | Mac OS                                                                                                                                                                                
architecture    | arm                                                                                                                                                                                   
uname           | uname_result(system='Darwin', node='unknown-macbook.local', release='23.6.0', version='Darwin Kernel Version 23.6.0: Wed Jul 31 20:48:52 PDT 2024;                                    
                | root:xnu-10063.141.1.700.5~1/RELEASE_ARM64_T6020', machine='arm64')                                                                                                                   
locale          | (None, 'UTF-8')                                                                                                                                                                       
python_version  | 3.11.9 (v3.11.9:de54cf5be3, Apr  2 2024, 07:12:50) [Clang 13.0.0 (clang-1300.0.29.30)]                                                                                                
python_location | PROJECT_PATH/caplib/.venv/bin/python3                                                                                
                                                                                                                                                                                                        

Tools info
git             | git version 2.46.2                                                                                  
ssh             | OpenSSH_9.9p1, OpenSSL 3.3.2 3 Sep 2024                                                             
kubectl         | NOT AVAILABLE                                                                                       
gcloud          | NOT AVAILABLE                                                                                       
cloud_sql_proxy | NOT AVAILABLE                                                                                       
mysql           | NOT AVAILABLE                                                                                       
sqlite3         | 3.43.2 2023-10-10 13:08:14 1b37c146ee9ebb7acd0160c0ab1fd11017a419fa8a3187386ed8cb32b709aapl (64-bit)
psql            | psql (PostgreSQL) 14.13 (Homebrew)                                                                  
                                                                                                                      

Paths info
airflow_home    | PROJECT_PATH/caplib                                                                                                  
system_path     | PROJECT_PATH/caplib/.venv/bin:PROJECT_PATH/caplib/bi
                | n:PROJECT_PATH/caplib/.venv/bin:/Users/dtomasi/.krew/bin:/Users/dtomasi/.krew/bin:/Users/dtomasi/Library/Python/3.9/b
                | in:/opt/homebrew/bin:/opt/homebrew/sbin:/Library/Frameworks/Python.framework/Versions/3.11/bin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com
                | .apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bo
                | otstrap/usr/appleinternal/bin:/usr/local/MacGPG2/bin:/Applications/Wireshark.app/Contents/MacOS:/Users/dtomasi/go/bin:/opt/homebrew/opt/go/libexec/bin                                
python_path     | PROJECT_PATH/caplib/.venv/bin:/Library/Frameworks/Python.framework/Versions/3.11/lib/python311.zip:/Library/Framework
                | s/Python.framework/Versions/3.11/lib/python3.11:/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/lib-dynload:/Users/dtomasi/code/gitlab.com/aoe-group/entities/aoe-gm
                | bh/divisions/docc/cap/caplib/.venv/lib/python3.11/site-packages:PROJECT_PATH/caplib/config:/Users/dtomasi/code/gitlab
                | .com/aoe-group/entities/aoe-gmbh/divisions/docc/cap/caplib/plugins:PROJECT_PATH/caplib/dags                          
airflow_on_path | True                                                                                                                                                                                  
                                                                                                                                                                                                        

Providers info
apache-airflow-providers-amazon          | 8.29.0
apache-airflow-providers-celery          | 3.8.2 
apache-airflow-providers-cncf-kubernetes | 8.4.2 
apache-airflow-providers-common-compat   | 1.2.0 
apache-airflow-providers-common-io       | 1.4.1 
apache-airflow-providers-common-sql      | 1.17.1
apache-airflow-providers-fab             | 1.4.0 
apache-airflow-providers-ftp             | 3.11.1
apache-airflow-providers-hashicorp       | 3.8.0 
apache-airflow-providers-http            | 4.13.1
apache-airflow-providers-imap            | 3.7.0 
apache-airflow-providers-postgres        | 5.13.0
apache-airflow-providers-smtp            | 1.8.0 
apache-airflow-providers-sqlite          | 3.9.0 

Is there any configuration option to stop this being added?