Making Flask Dev Server Network-Accessible
The Flask development server is an invaluable tool during the application development phase. However, by default, it only allows local access (via localhost) and doesn't support access from other devices on the network.
Why Does This Happen?
Unlike more mature frameworks, the Flask development server is designed to prioritize convenience over security. Its focus is on simplicity and ease of use, which makes it a poor choice for production environments.
How to Enable Network Access
While it's discouraged for production use, you can configure the Flask dev server to accept connections from other machines by using the --host option or the host parameter. By specifying "0.0.0.0" as the host parameter, you instruct the server to listen on all your machine's IP addresses, effectively making it externally visible.
Caution:
Remember that exposing your Flask dev server to the network exposes it to potential security risks. Ensure that you have disabled the debugger or trust the users on your network. Additionally, consider adjusting your firewall settings to restrict access from untrusted sources.
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