Purple Haze

A DNS tunnel client for iOS based on Iodine. A paid Apple Developer account is required to build because of the entitlements needed for Network Extensions.


  1. Make sure you cloned the submodules: git submodule init && git submodule update
  2. Copy CodeSigning.xcconfig.sample to CodeSigning.xcconfig and fill in DEVELOPMENT_TEAM with your Team ID (found here) and choose a unique PRODUCT_BUNDLE_PREFIX.
  3. Open PurpleHaze.xcodeproj and build it.


Read iodine’s documentations for instructions on setting up a server. Once you have iodined running on your computer and the nameserver pointed to your IP, you can tunnel into the private subnet created by iodined from Purple Haze. Note that without additional configuration, you cannot use the tunnel to browse the web (or connect to WAN). You can then setup a SSH tunnel (by connecting to or whatever your iodine server IP is set to) or a HTTP(S) proxy and configuring Purple Haze to use that proxy in the advanced settings.

If you are running iodined on a Linux machine/VM, then you can do the following to forward the TAP traffic to the internet.

# sysctl -e net.ipv4.ip_forward=1
# iptables -t nat -A POSTROUTING -s -o eth0 -j MASQUERADE

(Where is the IP/subnet of your iodined TAP interface and eth0 is the Ethernet interface.) Note this could pose a security issue as Iodine’s authentication is pretty weak.

Troubleshooting Tips

  • Make sure you built and are running the same release of iodine server from GitHub as the client in Purple Haze.
  • Iodine server seems more stable on Linux than macOS. If you are having trouble connecting to iodined, try running it from a Linux VM.
  • Try running iodine client on your computer on the same network to debug connection issues.
  • DNS tunneling to bypass paid WiFi is a well known trick and likely won’t work on any modern network.


What’s with the name?

  • “Purple Haze” is a great Jimi Hendrix song.
  • Iodine, the DNS tunnel this project is based off (itself named after the atomic number 53 which is also the port number for DNS), is a purple gas at room temperature.
  • Purple was the codename for the original iPhone.