# derliemonne/mesentask architecture

> Architecture diagram of the GitHub repository derliemonne/mesentask, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-08-03). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/derliemonne/mesentask
- Repository: https://github.com/derliemonne/mesentask

## Overview

#### Purpose and topology
MESEN BUTTON is a small LAN-based Python demonstration: a client exposes a one-button GUI, sends button events to a server, and the server displays a visual state change. It is intended primarily for Windows/Python 3.11.5 and normally runs across two networked machines.

#### Entry points
- Server process: `server_viewer.py`
- Client process: `client_sender.py`

Both programs require a matching manually configured `HOST` address. The server must start before the client connects.

#### Client interaction and event producer
`client_sender.py` owns the user-facing GUI. Its single button is the system’s only input surface. Pressing it triggers the client-side event path and attempts to send that event to the configured remote host.

Boundary: GUI interaction remains local; only the button action crosses the network.

#### Network transport boundary
The client and server communicate directly over the local network using the host values embedded in:
- `client_sender.py`
- `server_viewer.py`

There is no indicated broker, HTTP service, database, authentication layer, or persistent event store. Connectivity depends on reachable IP networking; VPN/emulated LAN software may substitute for a physical LAN.

#### Server receiver and visualizer
`server_viewer.py` is the receiving process and display owner. It opens a window initially showing an empty/black image, receives client button activity, and updates that displayed image in response.

Its responsibilities combine:
1. Binding/listening on the configured host.
2. Receiving the client signal.
3. Translating received activity into an image/window update.

#### Primary control flow
1. Operator configures the same server IP in `server_viewer.py` and `client_sender.py`.
2. Server starts, initializes its black display, and waits for a connection/event.
3. Client starts and connects to the server.
4. User presses the client GUI button.
5. Client transmits the button signal.
6. Server receives it and refreshes its displayed image.

#### Runtime and dependencies
The application runs as Python, tested with Python 3.11.5 on Windows. Python dependencies are installed from `requirements.txt`; the exact GUI, imaging, and networking libraries are defined there rather than in the README. No deployment infrastructure beyond two reachable hosts and Python environments is required.

Main entry points: [`server_viewer.py`](https://github.com/derliemonne/mesentask/blob/main/server_viewer.py) (Server viewer), [`client_sender.py`](https://github.com/derliemonne/mesentask/blob/main/client_sender.py) (Client sender), [`requirements.txt`](https://github.com/derliemonne/mesentask/blob/main/requirements.txt) (Dependencies)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_client["Client machine"]
  node_client_process["Client sender<br/>Python process<br/>[client_sender.py]"]
  node_client_button["Single GUI button<br/>input surface<br/>[client_sender.py]"]
  node_client_host["Configured server HOST<br/>network config<br/>[client_sender.py]"]
end

subgraph group_server["Server machine"]
  node_server_process["Server viewer<br/>Python process<br/>[server_viewer.py]"]
  node_server_host["Configured bind HOST<br/>network config<br/>[server_viewer.py]"]
  node_receiver["Signal receiver<br/>network listener<br/>[server_viewer.py]"]
  node_display["Viewer window<br/>visual output<br/>[server_viewer.py]"]
end

node_python{{"Python 3.11.5<br/>runtime"}}
node_requirements["Dependencies<br/>dependency manifest<br/>[requirements.txt]"]
node_lan["LAN / reachable IP network<br/>transport boundary"]

node_requirements -->|"installs for"| node_python
node_python -->|"runs"| node_client_process
node_python -->|"runs"| node_server_process
node_client_button -->|"press triggers"| node_client_process
node_client_host -->|"configures target"| node_client_process
node_client_process -->|"sends button signal"| node_lan
node_server_host -->|"configures bind"| node_server_process
node_lan -->|"delivers signal"| node_receiver
node_server_process -->|"listens through"| node_receiver
node_receiver -->|"refreshes image"| node_display
node_server_process -->|"initializes black view"| node_display

click node_requirements "https://github.com/derliemonne/mesentask/blob/main/requirements.txt"
click node_client_process "https://github.com/derliemonne/mesentask/blob/main/client_sender.py"
click node_client_button "https://github.com/derliemonne/mesentask/blob/main/client_sender.py"
click node_client_host "https://github.com/derliemonne/mesentask/blob/main/client_sender.py"
click node_server_process "https://github.com/derliemonne/mesentask/blob/main/server_viewer.py"
click node_server_host "https://github.com/derliemonne/mesentask/blob/main/server_viewer.py"
click node_receiver "https://github.com/derliemonne/mesentask/blob/main/server_viewer.py"
click node_display "https://github.com/derliemonne/mesentask/blob/main/server_viewer.py"

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_client_process,node_client_button,node_client_host toneBlue
class node_server_process,node_server_host,node_receiver,node_display toneAmber
class node_python,node_requirements,node_lan toneNeutral
```

## Components

### Client machine

- [Client sender](https://github.com/derliemonne/mesentask/blob/main/client_sender.py): Python process · Owns the local GUI and sends button events. · `client_sender.py`
- [Single GUI button](https://github.com/derliemonne/mesentask/blob/main/client_sender.py): input surface · The system's only operator input. · `client_sender.py`
- [Configured server HOST](https://github.com/derliemonne/mesentask/blob/main/client_sender.py): network config · Must match the server address. · `client_sender.py`

### Server machine

- [Server viewer](https://github.com/derliemonne/mesentask/blob/main/server_viewer.py): Python process · Listens for signals and owns the display. · `server_viewer.py`
- [Configured bind HOST](https://github.com/derliemonne/mesentask/blob/main/server_viewer.py): network config · Must match the client target address. · `server_viewer.py`
- [Signal receiver](https://github.com/derliemonne/mesentask/blob/main/server_viewer.py): network listener · Accepts the client connection and receives button activity. · `server_viewer.py`
- [Viewer window](https://github.com/derliemonne/mesentask/blob/main/server_viewer.py): visual output · Starts black and refreshes after received activity. · `server_viewer.py`

### Other components

- **Python 3.11.5**: runtime · Windows-targeted runtime for both processes.
- [Dependencies](https://github.com/derliemonne/mesentask/blob/main/requirements.txt): dependency manifest · Installs the GUI, imaging, and networking libraries. · `requirements.txt`
- **LAN / reachable IP network**: transport boundary · Direct client-to-server connectivity; no broker or persistent store.

## Connections

- Dependencies → Python 3.11.5: installs for
- Python 3.11.5 → Client sender: runs
- Python 3.11.5 → Server viewer: runs
- Single GUI button → Client sender: press triggers
- Configured server HOST → Client sender: configures target
- Client sender → LAN / reachable IP network: sends button signal
- Configured bind HOST → Server viewer: configures bind
- LAN / reachable IP network → Signal receiver: delivers signal
- Server viewer → Signal receiver: listens through
- Signal receiver → Viewer window: refreshes image
- Server viewer → Viewer window: initializes black view