# sftp_testing

A scratch project for troubleshooting and debugging the behavior of parallel SSH/SFTP connections to target machines using the `ssh2-sftp-client` npm library.

## What it does

`index.ts` spawns 6 worker threads concurrently. Each worker connects to an SFTP server, uploads `test.txt` as `<runIndex>-test.txt`, then deletes the remote file. The goal is to reproduce and inspect issues that arise when many connections are opened against a target host at the same time.

## Setup

```bash
npm install
cp config.example.json config.json
```

Then fill in `config.json` with real credentials. Multiple profiles are supported; pass a profile name as the first CLI argument (defaults to `default`):

```bash
npx tsx index.ts
npx tsx index.ts ftp.stevanfreeborn.com
```

## Notes

- Connection settings (host, port, username, password) are loaded from `config.json`.
- Each worker runs the same upload/delete sequence independently against the same target.
- On success, the main thread prints: `All workers completed execution successfully.`