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🔀 Cross-platform Golang implementation of TapDance censorship circumvention system client
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assets protobuf: +stats, +covert init (#87) Oct 17, 2018
cli go fmt Sep 9, 2019
protobuf Finalize move to the new repo (#10) Sep 6, 2019
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TapDance Client

TapDance is a free-to-use anti-censorship technology, protected from enumeration attacks.


Download Golang and TapDance and dependencies

  1. Install Golang (currently tested against version 1.10 and latest).

  2. Get source code for Go TapDance and all dependencies:

go get -d -u -t

Ignore the "no buildable Go source files" warning.

If you have outdated versions of libraries used, you might want to do go get -u all.


There are 3 supported ways to use TapDance:

package main

import (

func main() {
    // first, copy ClientConf and roots files into assets directory
    // make sure assets directory is writable (only) by the td process

    tdConn, err := tapdance.Dial("tcp", "")
    if err != nil {
        fmt.Printf("tapdance.Dial() failed: %+v\n", err)
    // tdConn implements standard net.Conn, allowing to use it like any other Golang conn with
    // Write(), Read(), Close() etc. It also allows to pass tdConn to functions that expect
    // net.Conn, such as tls.Client() making it easy to do tls handshake over TapDance conn.
    _, err = tdConn.Write([]byte("GET / HTTP/1.1\nHost:\n\n"))
    if err != nil {
        fmt.Printf("tdConn.Write() failed: %+v\n", err)
    buf := make([]byte, 16384)
    _, err = tdConn.Read(buf)
    // ...


Refraction Networking is an umberlla term for the family of similarly working technnologies.

TapDance station code released for FOCI'17 on github: refraction-networking/tapdance

Original 2014 paper: "TapDance: End-to-Middle Anticensorship without Flow Blocking"

Newer(2017) paper that shows TapDance working at high-scale: "An ISP-Scale Deployment of TapDance"

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