Hello, Thanks, everyone, for all the help. Obfs4proxy is up and running on a Pi2. Although the information on the subject is scattered across several issues on this list, I hope others can use it to build some bridges! http://www.zipplet.co.uk/index.php/content/raspberrypi_golang was a useful page on getting go 1.2 or higher installed on a Pi2. Thanks again, J Chase

Message: 1 Date: Thu, 23 Apr 2015 20:42:42 +0000 From: Yawning Angel yawning@schwanenlied.me To: tor-relays@lists.torproject.org Subject: Re: [tor-relays] Installing obfs4 on Raspberry Pi bridge Message-ID: 20150423204242.65bed2f9@schwanenlied.me Content-Type: text/plain; charset="us-ascii"

On Thu, 23 Apr 2015 19:53:55 +0000 jchase jchase@riseup.net wrote:

...

Hello, When I run

$ go get git.torproject.org/pluggable-transports/obfs4.git/obfs4proxy $ sudo cp $GOPATH/bin/obfs4proxy /usr/local/bin

on a laptop running linuxmint/ubuntu it produces a nice binary executable. Unfortunately it doesn't work to copy it to the Pi2, because it's not an ARM binary. When I run the same script on the Pi2 I get the following error messages:

go get git.torproject.org/pluggable-transports/obfs4.git/obfs4proxy # git.torproject.org/pluggable-transports/obfs4.git/common/ntor /usr/lib/go/src/pkg/git.torproject.org/pluggable-transports/obfs4.git/common/ntor/ntor.go:272: undefined: sha256.Sum256

[snip]

Any idea how I can get it cleanly on a Pi2?

This is covered in the README.md:

...

• Go 1.2.0 or later. Prior versions of Go (Eg: 1.0.2) are missing certain important parts of the runtime library like a SHA256 implementation.

Go 1.2 was released on December 1, 2013, so I'm not particularly inclined to support older versions, especially since it means re-implementing parts of the standard runtime library.

Regards,