Posts with Tag: Connectivity

ACM FCA — Progress, Rigolet Project

About a [month and a half ago](https://www.jasonernst.com/posts/2017/06/22/ACM-Future-of-Computing-A ...

The State of Connectivity in Canada’s Remote Communities

Previously, you might recall — I did a piece reviewing the [state of connectivity in Guatemala](http ...

One Year in — our mobile mesh platform is taking shape

I’ve almost officially been at Left for a year — where I’ve been working on connecting the next bill ...

The State of Connectivity in Guatemala

Inspired by the [Akamai State of the Internet report](https://web.archive.org/web/20160708134821/htt ...

Most Recent Post

Multicast Ipv4 and Ipv6 in Java / Kotlin

I recently ran into a peculiarity of multicast in Java / Kotlin. I was using a MulticastSocket: [https://docs.oracle.com/javase/8/docs/api/java/net/MulticastSocket.html](https://docs.oracle.com/javase/8/docs/api/java/net/MulticastSocket.html) and trying to ensure that it winds up bound to either an Inet4Address or Inet6Address. It turns out that even if I did something like: ``` val multicastSocket = MulticastSocket(InetSocketAddress("0.0.0.0", MULTICAST_DEFAULT_PORT)) assert(multicastSocket.localAddress is Inet4Address) ``` The assertion could fail. Similarly if I did: ``` val multicastSock ...