This is a simple tool to visualize ip addresses on a map. For example, you can use it to monitor realtime stream of ip addresses from Web application request log.

• Clone the git repo: git clone https://github.com/guozheng/locviz.git
• Install package manager (we use yarn) libs: brew install yarn && yarn install
• Start test client that writes ips to /tmp/request-ips: yarn startTestClient
• Start the server and point Web browser to http://localhost:8080

• Code is based on Alan Eng's snippet. It takes each zip code object that contains lat and lon and plots them on the map.
• Many thanks for the libs used in package.json such as D3.js, Express, socket.io, socket.io stream, tail-stream, maxmind, etc.
• IP to location mapping is done using the free MaxMind geolite2 data. It is from a manual download, there exists an update program. Other similar data packs can be found in this IP-based Geolocation FAQ article.

MIT License, see LICENSE.