# Sessman 3270

A simple session manager for 3270 systems extending go3270

Written by a human with AI assistance as an attempt to see what hybrid development could consist of and produce. There is a default user in the example config with the same username as password. 


## Features

- Persistent 3270 sessions originating from the sessman host
- Ability to reconnect to persistent session from another 3270
- PA3 hotkey to background the current session and return to the menu
- Multi user by design, public or password based authentication
- Line Commands to (H)old, (R)esume, (K)ill or start a (B)ackgrounded session
- Admin commands to kill sessions or shut down server remotely
- Cross platform, runs anywhere Go is supported

 
## Deployment

This project uses native Go tools, to generate a build run

```bash
  go build
```
Installing sessman3270 consists of copying the config.toml.dist file and changing it to fit your needs.
- If you wish to use SSL/TLS this is set by command line flags


## Run

```bash
Usage of ./sessman3270:
  -P    Allow public access
  -c string
        Path to toml config file (default "config.toml")
  -k string
        Path to TLS private key file (PEM)
  -l string
        Listen address (default "0.0.0.0:2323")
  -p string
        Generate bcrypt hash for password and exit
  -public
        Allow public access
  -t string
        Path to TLS certificate file (PEM)

```

The most basic way to run sessman3270 is to start the executable, it will look for a config.toml or exit. 

```bash
  ./sessman3270
```

Override the listen host with `-l`
```bash
  ./sessman3270 -l 192.168.1.20:623
```

Generate a password hash with `-p`

```bash
  ./sessman3270 -p $mySecretP4ssw0rd
```

Enable TLS by providing a key and certificate

```bash
  ./sessman3270 -c config.toml -k privkey.pem -t fullchain.pem 
```
## Screenshots

| Login Screen | Session Overview |
| :---: | :---: |
| ![Login Screen](Screenshots/LOGIN.png) | ![Session Overview](Screenshots/OVERVIEW.png) |

## Acknowledgements

 - [Go3270](https://https://github.com/racingmars/go3270)
 - [Proxy3270](https://github.com/racingmars/proxy3270)
 - [TUBES for z/OS](https://www.macro4.com/products/tubes-zos/)
 - [Qwen3.6-35B-A3B-MTP-GGUF](https://huggingface.co/byteshape/Qwen3.6-35B-A3B-MTP-GGUF)
 - [Gemini 3.8 Flash](https://blog.google/innovation-and-ai/models-and-research/gemini-models/3-8-flash-and-3-8-flash-cyber/)