Neubot DASH Go client and server

This repository contains an implementation of Neubot's DASH experiment client and server, both written in Go.

Server

The server is meant to be deployed at Measurement Lab. For this reason the release procedure for the server, described below, uses Docker. Images will be available as neubot/dash.

Build Docker Container

make buildcontainer

Test Docker Container locally

The following command should work on a Linux system:

make runcontainer

This command will run dash-server in a container as the root user, with no capabilities, limiting access to the file system and exposing all the relevant ports: 80 for HTTP based tests, 443 for HTTPS tests, and 9990 to access prometheus metrics.

Release

First of all, update the version number in:

• cmd/dash-client/main.go;
• client/client.go;

Then commit the changes and tag a new release.

To push the container at DockerHub, run:

docker push neubot/dash

The procedure to update the version that runs on M-Lab is the following:

1. open a pull request at m-lab/dash so they know they need to sync from this repo
2. ask the m-lab staff to pull the tagged version
3. open a pull request for neubot.jsonnet at m-lab/k8s-support

At this point, neubot/dash is deployed in staging. To test, use

https://locate-dot-mlab-staging.appspot.com/v2/nearest/neubot/dash

as the locate URL instead of the canonical one.

Client

Build using:

go build -v ./cmd/dash-client

Make sure you read PRIVACY.md before running. The command will anyway refuse to run unless you acknowledge the privacy policy by passing the -y command line flag.