TN3270Sharp

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A TN3270 Server Library

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# TN3270Sharp - 3270 Server Library for .NET 
 TN3270Sharp a .net library to write applications/servers with C# that use TN3270 clients

## Inspiration
This library was heavily inspired by [racingmars/go3270](https://github.com/racingmars/go3270) which has a similar goal, except it is designed to use golang instead of C#.  After watching a demo video of go3270, I decided that I needed to have the same functionality for my favorite developer ecosystem.

## Status
This project is still very early in development and is **not suitable** for use any project beyond experimentation. There is most certainly bugs and missing features.  The API will also likely change many times before it is declared ready for any realworld use.

***THIS CODE IS UNSTABLE. USE AT YOUR OWN RISK.***

## License
TN3270Sharp is licensed under the MIT License which permits commercial use; modification; distribution, and private use.

## Requirements
This should run on any machine support by Microsoft .NET 6.
This includes:
* Linux (x64, ARM32, ARM64) - This also includes Raspberry Pi 3 & 4.
* macOS (x64, Apple Silicon)
* Microsoft Windows (x86, x64)

## How to use
* Install [.NET 6](https://dotnet.microsoft.com/download/), the latest LTS version.
* Clone the repo
* Type the following in the shell

```
cd TN3270Sharp.Example.App
dotnet run
```
* launch your TN3270 emulator and connect to 127.0.0.1 port 3270

## Contributions
Pull requests and bug reports are welcome.

## Roadmap
Below is a rough roadmap to show upcoming goals.
- [] nuget package
- [] documentation (Wiki?)
- [] code clean up, including better code comments
- [] Wrapper for higher level abstraction (maybe a new project) to simplify create of common elments, i.e., Menus; headers; F-Key footers; etc.
- [] Better error checking.
- [] Rework the demo app.  Current demo was just for testing during initial development.

## Acknowledgements
I have borrowed / adapted some code from [racingmars/go3270](https://github.com/racingmars/go3270) and [Open3270/Open3270](https://github.com/Open3270/Open3270), both of which are also released under the MIT License.

I want to thank [bencz](https://github.com/bencz) for major contribution, including a new implementation of the TN3270 Connection Handler.

I also wish to thank [M4xAmmo](https://github.com/M4xAmmo) for contributions including: changable cursor position; factory methods to create fields; checking the terminals responses on negotiation instead of ignoring them; and some general code cleanup.

## Contributors
* [roblthegreat](https://github.com/roblthegreat) 
* [bencz](https://github.com/bencz)
* [M4xAmmo](https://github.com/M4xAmmo)

## Reference Material
* [racingmars/go3270](https://github.com/racingmars/go3270)
* [Open3270/Open3270](https://github.com/Open3270/Open3270)
* [Tommy Sprinkle's 3270 Data Stream Programming Material](http://www.tommysprinkle.com/mvs/P3270/)
* [RFC 1576: TN3270 Current Practices](https://tools.ietf.org/html/rfc1576)
* [RFC 1041: Telnet 3270 Regime Option](https://tools.ietf.org/html/rfc1041)
* [RFC 854: Telnet Protocol Specification](https://tools.ietf.org/html/rfc854)

TN3270Sharp

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