The Open Observatory of Network Interference (OONI) is a non-profit free software project that aims to empower decentralized efforts in documenting Internet censorship around the world.

This repository contains core OONI tools written in Go:

• the CLI client (cmd/ooniprobe);

• the test helper server (internal/cmd/oohelperd);

• the mobile library (pkg/oonimkall);

• the OONI Probe engine (inside internal).

Every top-level directory in this repository contains an explanatory README file. You may also notice that some internal packages live under internal/engine while most others are top-level. This is part of a long-standing refactoring started when we merged https://github.com/ooni/probe-engine into this repository. We'll slowly ensure that all packages inside engine are moved out of it and inside internal.

The mobile library is a public package for technical reasons. Go mobile tools require a public package to build from. Yet, we don't consider API breakages happening in such a package to be sufficient to bump our major version number. For us, the mobile library is just a mean to implement OONI Probe Android and OONI Probe iOS. We'll only bump the major version number if we change ./cmd/ooniprobe's CLI.

SPDX-License-Identifier: GPL-3.0-or-later

Please, follow the instructions at ooni.org/install/cli to install ooniprobe. If we do not support your use case, please let us know. Once ooniprobe is installed, try ooniprobe help to get interactive help.

Report issues at github.com/ooni/probe. Please, make sure you add the ooni/probe-cli label.

Be sure you have:

1. the golang version mentioned inside the GOVERSION file;

2. a C compiler (Mingw-w64 for Windows).

As of 2022-08-22, building with go1.19 will not include Psiphon as a dependency. Fixing this issue is TODO(ooni/probe#2222).

Ooniprobe is the official CLI client. Compile using:

go build -v -ldflags "-s -w" ./cmd/ooniprobe

This will generate a binary called ooniprobe in the current directory.

Miniooni is the experimental OONI client used for research. Compile using:

go build -v -ldflags "-s -w" ./internal/cmd/miniooni

This will generate a binary called miniooni in the current directory.

Oohelperd is the test helper server. Compile using:

go build -v -ldflags "-s -w" ./internal/cmd/oohelperd

This will generate a binary called oohelperd in the current directory.

Every nettest (aka experiment) implemented in this repository has a companion spec in ooni/spec.

Please, see CONTRIBUTING.md.

go get -t -u -v ./... && go mod tidy

Create an issue according to the routine release template and perform any item inside the check-list.

We build releases using Makefile, which requires GNU make. Run make help for detailed usage.