How Can I Access My Flask Development Server from Other Devices on My Network?

Accessing Flask Development Server over Network

When running a Flask application in development mode, it becomes inaccessible from other network devices. This is due to the default localhost-only configuration of the Flask development server.

Solution:

To make the Flask development server visible across the network, it must be configured to listen on all IP addresses instead of solely localhost. This can be achieved by specifying the --host option with the value 0.0.0.0 when running flask run or by setting the host parameter to 0.0.0.0 in app.run().

Impact of 0.0.0.0 Value:

The 0.0.0.0 value instructs the development server to bind to all IP addresses of the host machine. However, this value cannot be directly accessed through a browser; instead, the specific IP address of the machine must be used within the network. Additionally, firewall settings may need to be adjusted to permit external access to the development server's port.

Flask Documentation:

The Flask documentation provides detailed guidelines for making the development server externally accessible in its "Externally Visible Server" section. This guide explicitly advises against using the Flask development server for production deployment, highlighting its lack of security, stability, and efficiency. Proper solutions for deploying Flask applications in production environments are provided in the same documentation.

The above is the detailed content of How Can I Access My Flask Development Server from Other Devices on My Network?. For more information, please follow other related articles on the PHP Chinese website!