colindean / bonjour-ftpd

A simple SSL FTP server/client that uses DNS-SD for discovery

bonjour-ftpd

A simple SSL FTP server/client that uses DNS-SD for discovery

by @colindean

Introduction

I wrote this as a simple example meeting the requirements of a post on /r/ruby: A peer-to-peer file transfer system featuring peer discovery and secure file transfer.

This example sets up an FTPd with SSL enabled that announces its availability using DNS-SD and mDNS. The client then browses for servers that are announcing its expected service name, then connects and lists files.

Requirements

See Gemfile. I wrote this on Ruby 2.1.0 on OSX.

Running

First, install gems.

bundle install

In one terminal, run the server.

ruby server.rb

Grab the directory that's output when the server starts. You can put a file in there with something like

touch /var/whatever/this/is/this-is-a-file

In another terminal,

ruby client.rb

You should see some output like this:

Ruby\032FTPS\032DNSSD\032Example._ftps._tcp.local.
Listing files available on Ruby FTPS DNSSD Example on kid.local.:8721
-rw-r--r-- 1 colin    staff           0 Feb 16 14:03 this-is-a-file

The server will stay running. The client will, too, so you'll have to kill it to run it again.