# grafl/skeleton architecture

> Architecture diagram of the GitHub repository grafl/skeleton, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-13). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/grafl/skeleton
- Repository: https://github.com/grafl/skeleton

## Overview

Skeleton has two independent runtime paths: a console APR/APR-util demonstration and a local Apache server with a custom request handler. The server path serves static content and Apache diagnostics as well as the library-backed `/test` response. The README documents these routes and the load configuration; `src/mod_test.c` and the server configuration template were not excerpted, so their internal routing details are shown only as documented.

Main entry points: [`src/main.c`](https://github.com/grafl/skeleton/blob/master/src/main.c) (Skeleton console), [`src/mod_test.c`](https://github.com/grafl/skeleton/blob/master/src/mod_test.c) (Test handler), [`src/test1.c`](https://github.com/grafl/skeleton/blob/master/src/test1.c) (Message library), [`cmake/httpd-test.conf.in`](https://github.com/grafl/skeleton/blob/master/cmake/httpd-test.conf.in) (Test server config)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_console["Console demonstration"]
  node_console_app["Skeleton console<br/>[main.c]"]
  node_apr["APR runtime"]
  node_aprutil["APR-util Base64"]
end

subgraph group_server["Local HTTP server"]
  node_httpd["Apache httpd"]
  node_server_config["Test server config<br/>[httpd-test.conf.in]"]
  node_static_page["Sample page"]
  node_mod_info["Server diagnostics"]
end

subgraph group_response["Custom response"]
  node_test_handler["Test handler<br/>[mod_test.c]"]
  node_test1["Message library<br/>[test1.c]"]
  node_shared_apr["Shared APR"]
end

node_console_actor(("Console user"))
node_http_client(("HTTP client"))

node_console_actor -->|"runs"| node_console_app
node_console_app -->|"initializes and allocates"| node_apr
node_console_app -->|"Base64 encodes"| node_aprutil
node_http_client -->|"sends requests"| node_httpd
node_server_config -->|"configures"| node_httpd
node_httpd -->|"serves at /"| node_static_page
node_httpd -->|"dispatches /test"| node_test_handler
node_test_handler -->|"calls message function"| node_test1
node_test1 -->|"allocates from pool"| node_shared_apr
node_httpd -->|"dispatches /server-info"| node_mod_info

click node_console_app "https://github.com/grafl/skeleton/blob/master/src/main.c"
click node_server_config "https://github.com/grafl/skeleton/blob/master/cmake/httpd-test.conf.in"
click node_static_page "https://github.com/grafl/skeleton/blob/master/cmake/httpd-test-index.html"
click node_test_handler "https://github.com/grafl/skeleton/blob/master/src/mod_test.c"
click node_test1 "https://github.com/grafl/skeleton/blob/master/src/test1.c"

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_console_app,node_apr,node_aprutil,node_console_actor,node_http_client toneBlue
class node_httpd,node_server_config,node_static_page,node_mod_info toneAmber
class node_test_handler,node_test1,node_shared_apr toneMint
```

## Components

### Console demonstration

- [Skeleton console](https://github.com/grafl/skeleton/blob/master/src/main.c): `src/main.c`
- **APR runtime**
- **APR-util Base64**

### Local HTTP server

- **Apache httpd**
- [Test server config](https://github.com/grafl/skeleton/blob/master/cmake/httpd-test.conf.in): `cmake/httpd-test.conf.in`
- [Sample page](https://github.com/grafl/skeleton/blob/master/cmake/httpd-test-index.html): `cmake/httpd-test-index.html`
- **Server diagnostics**

### Custom response

- [Test handler](https://github.com/grafl/skeleton/blob/master/src/mod_test.c): `src/mod_test.c`
- [Message library](https://github.com/grafl/skeleton/blob/master/src/test1.c): `src/test1.c`
- **Shared APR**

### Other components

- **Console user**
- **HTTP client**

## Connections

- Console user → Skeleton console: runs (evidence: `README.md`)
- Skeleton console → APR runtime: initializes and allocates (evidence: `src/main.c`)
- Skeleton console → APR-util Base64: Base64 encodes (evidence: `src/main.c`)
- HTTP client → Apache httpd: sends requests (evidence: `README.md`)
- Test server config → Apache httpd: configures (evidence: `README.md`)
- Apache httpd → Sample page: serves at / (evidence: `README.md`)
- Apache httpd → Test handler: dispatches /test (evidence: `README.md`)
- Test handler → Message library: calls message function (evidence: `README.md`)
- Message library → Shared APR: allocates from pool (evidence: `README.md`)
- Apache httpd → Server diagnostics: dispatches /server-info (evidence: `README.md`)