# teodogram4/microtcp architecture

> Architecture diagram of the GitHub repository teodogram4/microtcp, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-24). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/teodogram4/microtcp
- Repository: https://github.com/teodogram4/microtcp

## Overview

microTCP is a teaching library intended to provide TCP-like sockets over UDP. Its declared user workflow covers socket creation, binding, connection setup or acceptance, data transfer, and shutdown. However, every function body in `lib/microtcp.c` is a stub, so the tree and sampled source do not establish working runtime behavior or the intended call sequence. The implementation includes the CRC helper, but the stubs do not use it.

Main entry points: [`lib/microtcp.c`](https://github.com/teodogram4/microtcp/blob/master/lib/microtcp.c) (microTCP API), [`lib/microtcp.h`](https://github.com/teodogram4/microtcp/blob/master/lib/microtcp.h) (Socket contract), [`utils/crc32.h`](https://github.com/teodogram4/microtcp/blob/master/utils/crc32.h) (CRC-32 helper)

## Diagram (Mermaid)

```mermaid
flowchart TD

node_application(("Application"))
node_api["microTCP API<br/>[microtcp.c]"]
node_contract["Socket contract<br/>[microtcp.h]"]
node_crc["CRC-32 helper<br/>[crc32.h]"]

node_application -->|"calls API"| node_api
node_api -->|"includes declarations"| node_contract
node_api -->|"includes helper"| node_crc

click node_api "https://github.com/teodogram4/microtcp/blob/master/lib/microtcp.c"
click node_contract "https://github.com/teodogram4/microtcp/blob/master/lib/microtcp.h"
click node_crc "https://github.com/teodogram4/microtcp/blob/master/utils/crc32.h"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_application toneIndigo
class node_api toneMint
class node_contract,node_crc toneTeal
```

## Components

### Other components

- **Application**
- [microTCP API](https://github.com/teodogram4/microtcp/blob/master/lib/microtcp.c): `lib/microtcp.c`
- [Socket contract](https://github.com/teodogram4/microtcp/blob/master/lib/microtcp.h): `lib/microtcp.h`
- [CRC-32 helper](https://github.com/teodogram4/microtcp/blob/master/utils/crc32.h): `utils/crc32.h`

## Connections

- Application → microTCP API: calls API
- microTCP API → Socket contract: includes declarations
- microTCP API → CRC-32 helper: includes helper