Network-Programming on Jim Diroff II

365 Days of Code - Day 052

Fri, 13 Mar 2026 00:00:01 -0500

Project Status

Project	Language	Status	Due Date	Latest Update
Personal Website	Hugo	Ongoing	None	The site is live. Continuous improvements ongoing.
Laravel From Scratch	Laravel (PHP)	In-Progress	2026-03-31	Episode 8
PRM	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Client Website (J.L.)	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Project Euler	C	Ongoing	None	Working on P25. BigInt (AI gen) was a waste of time, need to rewrite
Practice Java	Java	Paused	None	Installed, need to find a good project.
Practice Python	Python	Paused	None	Installed, need to find a good project.
Learn Go	Go	Paused	None	Installed, work on LDAP Injector from ippsec.
Learn Rust	Rust	Haven’t Started	None	Installed, will try network protocols after finishing in C and Zig.
Learn Elixir	Elixir	Haven’t Started	None	Installed, need a good tutorial project.
Learn Haskell	Haskell	Haven’t Started	None	Installed, need a good tutorial project.
Learn Zig	Zig	Haven’t Started	None	Installed, will try network protocols after finishing in C.
Linux+	N/A	In-Progress	2026-03-31	Reading Chapter 4.
Cyber Quest 2026	N/A	In-Progress	2026-02-28	Finished quiz 1 with 75%.
Operating Systems	N/A	In-Progress	2026-03-31	Reading Chapter 4: Abstraction
Grey-Hat Hacking	Various	In-Progress	2026-03-31	Reading Chapter 8: Threat Hunting Lab
PHP Time Tracker	PHP	Beta Finished	None	Working on a basic level.
HTTP Status Code Reader	C	Complete	2026-02-18	Complete.
ZSH Configuration	bash/zsh	Complete	None	Sort of an ongoing process, but complete for now. Works good.
Network Protocols	C	In-Progress	None	Working on V3, implementing IPv6.
Discinox Website	HTML, CSS, JS	Complete	2026-03-04	The site is live.
DiroffTech Website	HTML, CSS, JS	Complete	2026-03-05	The site is live. `git-lfs` needs to be initialized for images.
Automate Backups	bash	Complete	2026-03-08	Backups done.

Pushing Raw Packets: Bridging User Space and the Wire

The following post was AI-generated, with my notes and input. It is 2:30 AM when I wrapped up and I’m tired today…

365 Days of Code - Day 050

Wed, 11 Mar 2026 00:00:01 -0500

Project Status

Project	Language	Status	Due Date	Latest Update
Personal Website	Hugo	Ongoing	None	The site is live. Continuous improvements ongoing.
Laravel From Scratch	Laravel (PHP)	In-Progress	2026-03-31	Episode 8
PRM	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Client Website (J.L.)	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Project Euler	C	Ongoing	None	Working on P25. BigInt (AI gen) was a waste of time, need to rewrite
Practice Java	Java	Paused	None	Installed, need to find a good project.
Practice Python	Python	Paused	None	Installed, need to find a good project.
Learn Go	Go	Paused	None	Installed, work on LDAP Injector from ippsec.
Learn Rust	Rust	Haven’t Started	None	Installed, will try network protocols after finishing in C and Zig.
Learn Elixir	Elixir	Haven’t Started	None	Installed, need a good tutorial project.
Learn Haskell	Haskell	Haven’t Started	None	Installed, need a good tutorial project.
Learn Zig	Zig	Haven’t Started	None	Installed, will try network protocols after finishing in C.
Linux+	N/A	In-Progress	2026-03-31	Reading Chapter 4.
Cyber Quest 2026	N/A	In-Progress	2026-02-28	Finished quiz 1 with 75%.
Operating Systems	N/A	In-Progress	2026-03-31	Reading Chapter 4: Abstraction
Grey-Hat Hacking	Various	In-Progress	2026-03-31	Reading Chapter 8: Threat Hunting Lab
PHP Time Tracker	PHP	Beta Finished	None	Working on a basic level.
HTTP Status Code Reader	C	Complete	2026-02-18	Complete.
ZSH Configuration	bash/zsh	Complete	None	Sort of an ongoing process, but complete for now. Works good.
Network Protocols	C	In-Progress	None	Working on V3, implementing IPv6.
Discinox Website	HTML, CSS, JS	Complete	2026-03-04	The site is live.
DiroffTech Website	HTML, CSS, JS	Complete	2026-03-05	The site is live. `git-lfs` needs to be initialized for images.
Automate Backups	bash	Complete	2026-03-08	Backups done.

Ambiguities in RFC Language

While reimplementing my ICMP code for IP Protocol From Scratch (opens in a new tab), I spent some time (re)reading RFC 792 (opens in a new tab) for ICMP. I came across some interesting language used in the Echo or Echo Reply Message section.

365 Days of Code - Day 049

Tue, 10 Mar 2026 00:00:01 -0500

Project Status

Project	Language	Status	Due Date	Latest Update
Personal Website	Hugo	Ongoing	None	The site is live. Continuous improvements ongoing.
Laravel From Scratch	Laravel (PHP)	In-Progress	2026-03-31	Episode 8
PRM	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Client Website (J.L.)	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Project Euler	C	Ongoing	None	Working on P25. BigInt (AI gen) was a waste of time, need to rewrite
Practice Java	Java	Paused	None	Installed, need to find a good project.
Practice Python	Python	Paused	None	Installed, need to find a good project.
Learn Go	Go	Paused	None	Installed, work on LDAP Injector from ippsec.
Learn Rust	Rust	Haven’t Started	None	Installed, will try network protocols after finishing in C and Zig.
Learn Elixir	Elixir	Haven’t Started	None	Installed, need a good tutorial project.
Learn Haskell	Haskell	Haven’t Started	None	Installed, need a good tutorial project.
Learn Zig	Zig	Haven’t Started	None	Installed, will try network protocols after finishing in C.
Linux+	N/A	In-Progress	2026-03-31	Reading Chapter 4.
Cyber Quest 2026	N/A	In-Progress	2026-02-28	Finished quiz 1 with 75%.
Operating Systems	N/A	In-Progress	2026-03-31	Reading Chapter 4: Abstraction
Grey-Hat Hacking	Various	In-Progress	2026-03-31	Reading Chapter 8: Threat Hunting Lab
PHP Time Tracker	PHP	Beta Finished	None	Working on a basic level.
HTTP Status Code Reader	C	Complete	2026-02-18	Complete.
ZSH Configuration	bash/zsh	Complete	None	Sort of an ongoing process, but complete for now. Works good.
Network Protocols	C	In-Progress	None	Working on V3, implementing IPv6.
Discinox Website	HTML, CSS, JS	Complete	2026-03-04	The site is live.
DiroffTech Website	HTML, CSS, JS	Complete	2026-03-05	The site is live. `git-lfs` needs to be initialized for images.
Automate Backups	bash	Complete	2026-03-08	Backups done.

IP (6) Protocol From Scratch

I got back to the network code programming today, with a refactoring of my V1 and V2 code from IP Protocol From Scratch (opens in a new tab). In V3, I’m separating the logic into proper header files, and building up a library that is more generalized. I’m also performing my first implementation of IPv6 (opens in a new tab). At first I was thrown off because the first 4 bytes of the IPv6 header did not align with uint8 or uint16, before I realized that a 32-bit member would perfectly capture the first fields of the header: uint32_t version_class_flow;. The IP Version takes the first 4 bits, the Traffic Class takes the middle 8 bits, and the Flow Label takes the last 20 bits. With my experience in packing and shifting bits around in the first two versions, this shouldn’t be too bad.

365 Days of Code - Day 042

Tue, 03 Mar 2026 00:00:01 -0500

Project Status

Project	Language	Status	Due Date	Latest Update
Personal Website	Hugo	Ongoing	None	The site is live. There are some TODOs. Need to work on categorization, tagging, and layout improvements.
Laravel From Scratch	Laravel (PHP)	In-Progress	2026-03-31	Episode 8
PRM	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Client Website (J.L.)	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Project Euler	C	Ongoing	None	Working on P25. BigInt (AI gen) was a waste of time, need to rewrite
Practice Java	Java	Paused	None	Installed, need to find a good project.
Practice Python	Python	Paused	None	Installed, need to find a good project.
Learn Go	Go	Paused	None	Installed, work on LDAP Injector from ippsec.
Learn Rust	Rust	Haven’t Started	None	Installed, will try network protocols after finishing in C and Zig.
Learn Elixir	Elixir	Haven’t Started	None	Installed, need a good tutorial project.
Learn Haskell	Haskell	Haven’t Started	None	Installed, need a good tutorial project.
Learn Zig	Zig	Haven’t Started	None	Installed, will try network protocols after finishing in C.
Linux+	N/A	In-Progress	2026-03-31	Reading Chapter 4.
Cyber Quest 2026	N/A	In-Progress	2026-02-28	Finished quiz 1 with 75%.
Operating Systems	N/A	In-Progress	2026-03-31	Reading Chapter 4: Abstraction
Grey-Hat Hacking	Various	In-Progress	2026-03-31	Reading Chapter 8: Threat Hunting Lab
PHP Time Tracker	PHP	Beta Finished	None	Working on a basic level. Could use a couple more updates to make it fully functional.
HTTP Status Code Reader	C	Complete	2026-02-18	Complete. Could potentially upgrade for more advanced functions or follow redirects.
ZSH Configuration	bash/zsh	Complete	None	Sort of an ongoing process, but complete for now. Works good.
Network Protocols	C	In-Progress	None	V2 complete. Moving to V3, refactoring again.

Network Protocols Version 2

Further refinements to version 2 of IP Protocol From Scratch (opens in a new tab). I think this version is complete. Many improvements were made, and the code is ready to be refactored into separate files.

365 Days of Code - Day 041

Mon, 02 Mar 2026 00:00:01 -0500

Project Status

Project	Language	Status	Due Date	Latest Update
Personal Website	Hugo	Ongoing	None	The site is live. There are some TODOs. Need to work on categorization, tagging, and layout improvements.
Laravel From Scratch	Laravel (PHP)	In-Progress	2026-03-31	Episode 8
PRM	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Client Website (J.L.)	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Project Euler	C	Ongoing	None	Working on P25. BigInt (AI gen) was a waste of time, need to rewrite
Practice Java	Java	Paused	None	Installed, need to find a good project.
Practice Python	Python	Paused	None	Installed, need to find a good project.
Learn Go	Go	Paused	None	Installed, work on LDAP Injector from ippsec.
Learn Rust	Rust	Haven’t Started	None	Installed, will try network protocols after finishing in C and Zig.
Learn Elixir	Elixir	Haven’t Started	None	Installed, need a good tutorial project.
Learn Haskell	Haskell	Haven’t Started	None	Installed, need a good tutorial project.
Learn Zig	Zig	Haven’t Started	None	Installed, will try network protocols after finishing in C.
Linux+	N/A	In-Progress	2026-03-31	Reading Chapter 4.
Cyber Quest 2026	N/A	In-Progress	2026-02-28	Finished quiz 1 with 75%.
Operating Systems	N/A	In-Progress	2026-03-31	Reading Chapter 4: Abstraction
Grey-Hat Hacking	Various	In-Progress	2026-03-31	Reading Chapter 8: Threat Hunting Lab
PHP Time Tracker	PHP	Beta Finished	None	Working on a basic level. Could use a couple more updates to make it fully functional.
HTTP Status Code Reader	C	Complete	2026-02-18	Complete. Could potentially upgrade for more advanced functions or follow redirects.
ZSH Configuration	bash/zsh	Complete	None	Sort of an ongoing process, but complete for now. Works good.
Network Protocols	C	In-Progress	None	Custom ICMP packet sent on the wire. Working on V2.

Network Protocols Version 2

Further refinements to version 2 of IP Protocol From Scratch (opens in a new tab). I have refined all the functions up to socket programming. It is still far from a perfect application, but it is getting there slowly. Some of the values are still hardcoded, such as source and destination addresses, but the structure is being put into place to make this a dynamic application. I think the goal at this time is to have a minimal ping-style application. Once I am able to run the program from the command line with custom arguments for source and destination addresses, number of pings, and variable payload sizes… I think I’ll consider this project complete. One of the most significant parts to build will be handling fragmentation. That I’m reserving for last.

365 Days of Code - Day 040

Sun, 01 Mar 2026 00:00:01 -0500

Project Status

Project	Language	Status	Due Date	Latest Update
Personal Website	Hugo	Ongoing	None	The site is live. There are some TODOs. Need to work on categorization, tagging, and layout improvements.
Laravel From Scratch	Laravel (PHP)	In-Progress	2026-03-31	Episode 8
PRM	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Client Website (J.L.)	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Project Euler	C	Ongoing	None	Working on P25. BigInt (AI gen) was a waste of time, need to rewrite
Practice Java	Java	Paused	None	Installed, need to find a good project.
Practice Python	Python	Paused	None	Installed, need to find a good project.
Learn Go	Go	Paused	None	Installed, work on LDAP Injector from ippsec.
Learn Rust	Rust	Haven’t Started	None	Installed, will try network protocols after finishing in C and Zig.
Learn Elixir	Elixir	Haven’t Started	None	Installed, need a good tutorial project.
Learn Haskell	Haskell	Haven’t Started	None	Installed, need a good tutorial project.
Learn Zig	Zig	Haven’t Started	None	Installed, will try network protocols after finishing in C.
Linux+	N/A	In-Progress	2026-03-31	Reading Chapter 4.
Cyber Quest 2026	N/A	In-Progress	2026-02-28	Finished quiz 1 with 75%.
Operating Systems	N/A	In-Progress	2026-03-31	Reading Chapter 4: Abstraction
Grey-Hat Hacking	Various	In-Progress	2026-03-31	Reading Chapter 8: Threat Hunting Lab
PHP Time Tracker	PHP	Beta Finished	None	Working on a basic level. Could use a couple more updates to make it fully functional.
HTTP Status Code Reader	C	Complete	2026-02-18	Complete. Could potentially upgrade for more advanced functions or follow redirects.
ZSH Configuration	bash/zsh	Complete	None	Sort of an ongoing process, but complete for now. Works good.
Network Protocols	C	In-Progress	None	Custom ICMP packet sent on the wire. Working on V2.

Network Protocols Version 2

With the introductory network programming completed, and a packet successfully built and sent out of the local interface, it is time to clean up the program, and expand the functionality a bit. I’m still sticking with simple ICMP packets, but refactoring the code to be a bit more dynamic. Pulling functionality into functions, setting up boundaries and defensive programming for data, using smarter placement of assert, more useful enum values, and defining some magic numbers. The goal now is to get a bit closer to ping functionality. Sending an arbitrary number of packets to another host on the wire, and processing the responses.

365 Days of Code - Day 038

Fri, 27 Feb 2026 00:00:01 -0500

Project Status

Project	Language	Status	Due Date	Latest Update
Personal Website	Hugo	Ongoing	None	The site is live. There are some TODOs. Need to work on categorization, tagging, and layout improvements.
Laravel From Scratch	Laravel (PHP)	In-Progress	2026-03-31	Episode 8
PRM	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Client Website (J.L.)	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Project Euler	C	Ongoing	None	Working on P25. BigInt (AI gen) was a waste of time, need to rewrite
Practice Java	Java	Paused	None	Installed, need to find a good project.
Practice Python	Python	Paused	None	Installed, need to find a good project.
Learn Go	Go	Paused	None	Installed, work on LDAP Injector from ippsec.
Learn Rust	Rust	Haven’t Started	None	Installed, will try network protocols after finishing in C and Zig.
Learn Elixir	Elixir	Haven’t Started	None	Installed, need a good tutorial project.
Learn Haskell	Haskell	Haven’t Started	None	Installed, need a good tutorial project.
Learn Zig	Zig	Haven’t Started	None	Installed, will try network protocols after finishing in C.
Linux+	N/A	In-Progress	2026-03-31	Reading Chapter 4.
Cyber Quest 2026	N/A	In-Progress	2026-02-28	Finished quiz 1 with 75%. Need to work on ARP poisoning and timestamp adjustments in WireShark.
Operating Systems	N/A	In-Progress	2026-03-31	Reading Chapter 4: Abstraction
Grey-Hat Hacking	Various	In-Progress	2026-03-31	Reading Chapter 8: Threat Hunting Lab
PHP Time Tracker	PHP	Beta Finished	None	Working on a basic level. Could use a couple more updates to make it fully functional.
HTTP Status Code Reader	C	Complete	2026-02-18	Complete. Could potentially upgrade for more advanced functions or follow redirects.
ZSH Configuration	bash/zsh	Complete	None	Sort of an ongoing process, but complete for now. Works good.
Network Protocols	C	In-Progress	None	IPv4 header, ICMP header and payload complete. Working on sockets.

The POSIX Standard, Transitive Dependencies, and Networking Code

While getting started on the socket configuration to send the newly constructed ICMP packet, I ran into a question about the header files in C and the things these files include. This led me down the rabbit hole of reading the POSIX standard (opens in a new tab).

365 Days of Code - Day 037

Thu, 26 Feb 2026 00:00:01 -0500

Project Status

Project	Language	Status	Due Date	Latest Update
Personal Website	Hugo	Ongoing	None	The site is live. There are some TODOs. Need to work on categorization, tagging, and layout improvements.
Laravel From Scratch	Laravel (PHP)	In-Progress	2026-03-31	Episode 8
PRM	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Client Website (J.L.)	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Project Euler	C	Ongoing	None	Working on P25. BigInt (AI gen) was a waste of time, need to rewrite
Practice Java	Java	Paused	None	Installed, need to find a good project.
Practice Python	Python	Paused	None	Installed, need to find a good project.
Learn Go	Go	Paused	None	Installed, work on LDAP Injector from ippsec.
Learn Rust	Rust	Haven’t Started	None	Installed, will try network protocols after finishing in C and Zig.
Learn Elixir	Elixir	Haven’t Started	None	Installed, need a good tutorial project.
Learn Haskell	Haskell	Haven’t Started	None	Installed, need a good tutorial project.
Learn Zig	Zig	Haven’t Started	None	Installed, will try network protocols after finishing in C.
Linux+	N/A	In-Progress	2026-03-31	Reading Chapter 4.
Cyber Quest 2026	N/A	In-Progress	2026-02-28	Finished quiz 1 with 75%. Need to work on ARP poisoning and timestamp adjustments in WireShark.
Operating Systems	N/A	In-Progress	2026-03-31	Reading Chapter 4: Abstraction
Grey-Hat Hacking	Various	In-Progress	2026-03-31	Reading Chapter 8: Threat Hunting Lab
PHP Time Tracker	PHP	Beta Finished	None	Working on a basic level. Could use a couple more updates to make it fully functional.
HTTP Status Code Reader	C	Complete	2026-02-18	Complete. Could potentially upgrade for more advanced functions or follow redirects.
ZSH Configuration	bash/zsh	Complete	None	Sort of an ongoing process, but complete for now. Works good.
Network Protocols	C	In-Progress	None	IPv4 Datagram Header built. Need to work on payload and ICMP.

Bug Fix - zshrc

I ran into an issue with my zshrc file today. Once again, related to the ssh agent. I use Linux Mint Debian Edition (opens in a new tab) with the Cinnamon DE. In an effort to be “helpful,” Cinnamon launches an SSH Agent for you when you boot up. This conflicted with my script, as my script was overriding the $SSH_AUTH_SOCK with a stale agent. The fix was relatively simple, just check if the $SSH_AUTH_SOCK has already been set.

365 Days of Code - Day 035

Tue, 24 Feb 2026 00:00:01 -0500

Project Status

Going to start including the project status table moving forward. This should help better track progress over the year.

Project	Language	Status	Due Date	Latest Update
Personal Website	Hugo	Ongoing	None	The site is live. There are some TODOs. Need to work on categorization, tagging, and layout improvements.
Laravel From Scratch	Laravel (PHP)	In-Progress	2026-03-31	Episode 8
PRM	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Client Website (J.L.)	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Project Euler	C	Ongoing	None	Working on P25. BigInt (AI gen) was a waste of time, need to rewrite
Practice Java	Java	Paused	None	Installed, need to find a good project.
Practice Python	Python	Paused	None	Installed, need to find a good project.
Learn Go	Go	Paused	None	Installed, work on LDAP Injector from ippsec.
Learn Rust	Rust	Haven’t Started	None	Installed, need a good tutorial project.
Learn Elixir	Elixir	Haven’t Started	None	Installed, need a good tutorial project.
Learn Haskell	Haskell	Haven’t Started	None	Installed, need a good tutorial project.
Linux+	N/A	In-Progress	2026-03-31	Reading Chapter 4.
Cyber Quest 2026	N/A	In-Progress	2026-02-28	Finished quiz 1 with 75%. Need to work on ARP poisoning and timestamp adjustments in WireShark.
Operating Systems	N/A	In-Progress	2026-03-31	Reading Chapter 4: Abstraction
Grey-Hat Hacking	Various	In-Progress	2026-03-31	Reading Chapter 8: Threat Hunting Lab
PHP Time Tracker	PHP	Beta Finished	None	Working on a basic level. Could use a couple more updates to make it fully functional.
HTTP Status Code Reader	C	Complete	2026-02-18	Complete. Could potentially upgrade for more advanced functions or follow redirects.
ZSH Configuration	bash/zsh	Complete	None	Sort of an ongoing process, but complete for now. Works good.
Network Protocols	C	In-Progress	None	IPv4 Datagram Header built, working on checksum calculation

Network Protocols - Calculating the IP Header Checksum

Yesterday, I spent a great deal of time working on understanding the IP header checksum, and how complements work in binary. Today, we implement the algorithm to calculate the checksum, and further our IP protocol development work.

365 Days of Code - Day 034

Mon, 23 Feb 2026 00:00:01 -0500

Project Status

Going to start including the project status table moving forward. This should help better track progress over the year.

Project	Language	Status	Due Date	Latest Update
Personal Website	Hugo	Ongoing	None	The site is live. There are some TODOs. Need to work on categorization, tagging, and layout improvements.
Laravel From Scratch	Laravel (PHP)	In-Progress	2026-03-31	Episode 8
PRM	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Client Website (J.L.)	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Project Euler	C	Ongoing	None	Working on P25. BigInt (AI gen) was a waste of time, need to rewrite
Practice Java	Java	Paused	None	Installed, need to find a good project.
Practice Python	Python	Paused	None	Installed, need to find a good project.
Learn Go	Go	Paused	None	Installed, work on LDAP Injector from ippsec.
Learn Rust	Rust	Haven’t Started	None	Installed, need a good tutorial project.
Learn Elixir	Elixir	Haven’t Started	None	Installed, need a good tutorial project.
Learn Haskell	Haskell	Haven’t Started	None	Installed, need a good tutorial project.
Linux+	N/A	In-Progress	2026-03-31	Reading Chapter 4.
Cyber Quest 2026	N/A	In-Progress	2026-02-28	Finished quiz 1 with 75%. Need to work on ARP poisoning and timestamp adjustments in WireShark.
Operating Systems	N/A	In-Progress	2026-03-31	Reading Chapter 4: Abstraction
Grey-Hat Hacking	Various	In-Progress	2026-03-31	Reading Chapter 8: Threat Hunting Lab
PHP Time Tracker	PHP	Beta Finished	None	Working on a basic level. Could use a couple more updates to make it fully functional.
HTTP Status Code Reader	C	Complete	2026-02-18	Complete. Could potentially upgrade for more advanced functions or follow redirects.
ZSH Configuration	bash/zsh	Complete	None	Sort of an ongoing process, but complete for now. Works good.
Network Protocols	C	In-Progress	None	IPv4 Datagram Header built, working on checksum calculation

Network Protocols - Calculating the IP Header Checksum

I’m working through the checksum calculation today. I’ve read up on RFC 1071, RFC 1141 and RFC 1624, which all have to do with implementing checksum calculations for the Internet Protocol. The process seems relatively simple, but I needed some refreshment on terminology since I’m not well versed in binary math and manipulation.

365 Days of Code - Day 033

Sun, 22 Feb 2026 00:00:01 -0500

Project Status

Going to start including the project status table moving forward. This should help better track progress over the year.

Project	Language	Status	Due Date	Latest Update
Personal Website	Hugo	Ongoing	None	The site is live. There are some TODOs. Need to work on categorization, tagging, and layout improvements.
Laravel From Scratch	Laravel (PHP)	In-Progress	2026-03-31	Episode 8
PRM	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Client Website (J.L.)	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Project Euler	C	Ongoing	None	Working on P25. BigInt (AI gen) was a waste of time, need to rewrite
Practice Java	Java	Paused	None	Installed, need to find a good project.
Practice Python	Python	Paused	None	Installed, need to find a good project.
Learn Go	Go	Paused	None	Installed, work on LDAP Injector from ippsec.
Learn Rust	Rust	Haven’t Started	None	Installed, need a good tutorial project.
Learn Elixir	Elixir	Haven’t Started	None	Installed, need a good tutorial project.
Learn Haskell	Haskell	Haven’t Started	None	Installed, need a good tutorial project.
Linux+	N/A	In-Progress	2026-03-31	Reading Chapter 4.
Cyber Quest 2026	N/A	In-Progress	2026-02-28	Finished quiz 1 with 75%. Need to work on ARP poisoning and timestamp adjustments in WireShark.
Operating Systems	N/A	In-Progress	2026-03-31	Reading Chapter 4: Abstraction
Grey-Hat Hacking	Various	In-Progress	2026-03-31	Reading Chapter 8: Threat Hunting Lab
PHP Time Tracker	PHP	Beta Finished	None	Working on a basic level. Could use a couple more updates to make it fully functional.
HTTP Status Code Reader	C	Complete	2026-02-18	Complete. Could potentially upgrade for more advanced functions or follow redirects.
ZSH Configuration	bash/zsh	Complete	None	Sort of an ongoing process, but complete for now. Works good.
Network Protocols	C	In-Progress	None	IPv4 Datagram Header complete in C.

Project Euler… Thoughts on AI

I came back to Project Euler today, to complete the work on p25. It was about a week ago that I had ChatGPT generate a BigInt library for me to calculate extremely large numbers. I was able to one shot the package with ChatGPT, and the library and testing code worked fine with numbers that had 1000+ digits. It was a cool exercise, where I learned absolutely nothing. Furthermore, I came back to the problem today to try and use this new library to solve the Euler problem, and the code is useless. Not only do I have no true understanding of how the library works, but I can’t iterate on it without reaching back out to AI for help.

365 Days of Code - Day 029

Wed, 18 Feb 2026 00:00:01 -0500

Project Status

Going to start including the project status table moving forward. This should help better track progress over the year.

Project	Language	Status	Due Date	Latest Update
Personal Website	Hugo	In-Progress	None	The site is live. There are some TODOs. Need to work on categorization, tagging, and layout improvements.
Laravel From Scratch	Laravel (PHP)	In-Progress	2026-03-31	Episode 6
PRM	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Client Website (J.L.)	Laravel (PHP)	In-Progress	2026-03-31	Working alongside other Laravel projects.
Project Euler	C	Ongoing	None	Working on P25 on a best effort basis. Currently building a BigInt library.
Learn Rust	Rust	Haven’t Started	None	Installed, need to find a good tutorial.
Learn Go	Go	Paused	None	Installed, work on LDAP Injector from ippsec.
Practice Java	Java	Paused	None	Installed, need to find a good project.
Practice Python	Python	Paused	None	Installed, need to find a good project.
PHP Time Tracker	PHP	Beta Finished	None	Working on a basic level. Could use a couple more updates to make it fully functional.
Learn Elixir	Elixir	Haven’t Started	None	Installed, need a good tutorial project.
Learn Haskell	Haskell	Haven’t Started	None	Installed, need good tutorial project.
Linux+	N/A	In-Progress	2026-03-31	Reading Chapter 4.
Cyber Quest 2026	N/A	In-Progress	2026-02-28	Finished quiz 1 with 75%. Need to work on ARP poisoning and timestamp adjustments in WireShark.
Operating Systems	N/A	In-Progress	2026-03-31	Reading Chapter 4: Abstraction
Grey-Hat Hacking	Various	In-Progress	2026-03-31	Reading Chapter 8: Threat Hunting Lab

Another Project - HTTP Status Code Reader in C

I was curious about sockets in C, and parsing HTTP responses, so I had ChatGPT whip me up a POC to read the status code from a website. I still wrote this all out by hand, to work on the muscle memory and work through each function individually.