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Latest commit c0e9913 Aug 20, 2016 @slefrancois slefrancois add intro details


This is source code for the Internet Connectome Project, which has the goal of mapping the networks delays throughout the Internet via crowdsourcing.

The goal of the survey was to map the topology of the Internet as well as measure, as accurately as possible, the latency between any two end points of the Internet where users could be. The topology is surveyed using the traceroute tool. The latency is estimated using two types of pings. The first ping method is the classical ping that uses the ICMP protocol to estimate the round-trip time between two computers. The second ping method is the non-traditional TCP ping that uses the TCP protocol to estimate the time it takes to establish a TCP connection between the local host and the remote destination.

Volunteers could participate to the survey by going to our Internet survey web page and launching a Java applet. The applet probes the topology of the Internet and estimates the latency to a number of remote destinations as determined by our survey server. The survey server determines which remote hosts will be probed by the volunteers in order to ensure a good coverage of the Internet as well as reliable latency measures.


The project is now finished, and the data can downloaded here.


Some stuff to config:


  • var always_up_addresses: The references IP to ping
  • var probability_to_ping: The probability to ping a reference ip
  • var _num_addresses: the number of additional ip to ping

It can also try to ping others client.

  • client/ var SERVER_HOSTNAME, SERVER_PORT: The url/port of the ping server
  • client/ var hostname and port in main(): The url/port of the ping server
  • client/applet_jar*.html a reference to the leaderboard server

The server asks the client to ping up to _num_addresses (defined in development.ini) ip per round. Up to half of that could be from other past client a server process saw. We limit this when the size of the list of past client is low to not DDOS them.

Technology used


Redis is an open source, advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets. It is in-memory, but can be saved:


Template for leaderboard.


The project was performed under the Ubisoft / NSERC industrial chair on Artificial Intelligence at the DIRO, Université de Montréal. We thank all the participants who helped collect the data.


The code and data are available under a BSD 3-clause style license.