You could if you wanted. I would recommend looking at the code in various libraries to see how other people do it. I will ask why you would want to given that other people have created libraries already.

Thanks Steve for swift feedback, Steve I while using the library without understanding what happening inside these library functions am not  getting the satisfaction and completeness.
Steve, can you please advise in library which file I need to refer and do you have any recommendations on books which could enlighten my knowledge in coding.
basically an an electrical engineer, the circuit part is very simple for me but for coding am just a beginner. RNT lab explains it beautifully but I have a feeling that I ll have self satisfaction if I could write own code for communication over internet.
I know may be am asking something illogical, but this is true that just using these libraries I feel incompleteness.
Once agin thanks Steve and RNT lab
Shahir Shajahan

Hi Shahir.
I’m sorry that our course is not what you were looking for. If you are unsatisfied with the course, you can ask for a refund. We want our customers to be 100% satisfied with the course: https://randomnerdtutorials.com/returns-and-refunds/.
To better understand how the library works in the background, you can check the files on the src folder: https://github.com/me-no-dev/ESPAsyncWebServer/tree/master/src.
I hope this helps.
Regards,
Sara

Shahir
To understand the underlying code you would need to know C++ (.cpp stands for C plus plus) which is the object oriented version of C (So you would also need to understand OOP – Object Oriented Programming).
The big thing is that you don’t have to. Even seasoned programmers (I have been programming for nearly 50 years) will use libraries. For years I used the C Standard Library so I didn’t have to recreate some things.
I started out as an electronics engineer and moved to embedded programming as soon as micro controllers came out. Back in those dark ages we had to use assembler. Now we have C compilers/linkers and libraries so it’s much easier to concentrate on what you want your project to do rather than the nuts and bolts underneath.
Once you master writing code for your project (Or two or three) and understand C++ and OOP you could look into writing your own library(s) which would complete your journey. As they say you should walk before you try running.

Hi Sara,
Thank you so much for understanding my feelings, however appreciate you, Rui and RNT lab for the fabulous content and your hard works.
i don’t want to quit, will continue the course and would like to join other courses to upon completion of the current subscribed program.
once again thank you so much 😊🙏

Dear Steve,
Thank you so much for your motivational statements, it’s very clear to me.
Appreciated for your inspiring words!!!
Thanks you so much Steve 🙏😊

Great!
Thanks for your nice words.
I’ll close this issue. If you need further help, you just need to open a new question in our forum.
Regards,
Sara