Embedded Web servers are suitable for scenarios with limited resources. 1. Choose a suitable framework such as C/C to use uWebSockets or Mongoose, Python to choose Bottle or Flask, Go to use net/http; 2. Design to use static HTML JS plus JSON interface to simplify routing and logic; 3. Enable HTTPS, add login verification, and avoid root permissions to run; 4. Pack static files, cross-compile, and check ports and permissions during deployment.
Embedded Web server is a thing that integrates a lightweight HTTP service into your device or program. It is not as complex as Apache or Nginx, and is suitable for scenarios where resources are limited and requires quick web interface building. If you are working on an IoT device, control panel, or want to remotely operate a small system through a browser, an embedded web server is suitable.

Select the right framework or library
There are many ready-made solutions for embedded web servers, the key is your platform and language preferences. for example:
- C/C : You can use uWebSockets or Mongoose , which run well in embedded environments.
- Python : Bottle or Flask is lightweight and suitable for less performance-intensive devices.
- Go :
net/http
in the standard library is simple and direct enough, and Go's concurrency model performs well when handling multiple connections.
A few points to pay attention to when choosing:

- Memory and CPU usage
- Whether HTTPS is supported (many embedded devices also require encryption)
- Community activity and documentation are clear
Simplify functional design and don't pursue "full functions"
The resources of embedded systems are limited, so you don’t need to build a complete Web framework to support front-end separation and dynamic rendering. It only needs to provide a few interfaces so that users can view status and issue commands.
For example, if you are doing a temperature control device, the web page may only need to display the current temperature and set the target temperature. The background API provides GET and POST interfaces.

suggestion:
- Reduce backend pressure by using static HTML JS
- As little routing as possible, the logic should be clear
- Avoid complex template engines, and static file compression saves space
Security cannot be ignored
Many people think that embedded devices are only used internally and it doesn’t matter whether they are safe or not. Even if it is just a LAN access, it is recommended to do some basic protection:
- Add a simple login verification to the web service (Token or Basic Auth)
- If there is a risk of public network exposure, be sure to enable HTTPS (Let's Encrypt certificate can also run on embedded versions)
- Do not run web services with root permissions to reduce the attack surface
Some devices do not have a password when they are shipped out of the factory, and users are too lazy to change it, which makes them easily attacked. Therefore, it is best to force the account to be set or random tokens are generated in the code when it is started for the first time.
Tips for daily debugging and deployment
Debugging is a headache when developing embedded web services. It is recommended that you add log output to the code and open a /status
or /debug
interface to view the running status, memory usage and other information.
In addition, please pay attention to the deployment:
- Pack static files into binary to reduce dependencies
- Use cross-compilation to ensure it can run on the target platform
- Test the compatibility of different browsers, especially mobile access experience
If the web service cannot be raised after the device restarts, priority is given to checking for port conflicts, configuration file paths are correct, and permission issues.
Basically all this is it. An embedded web server doesn’t seem complicated, but there are still many details to consider if you really need to be stable.
The above is the detailed content of Go for Embedded Web Servers. For more information, please follow other related articles on the PHP Chinese website!

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