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README.md

Source application

This application implements the source for the experiments for the paper. It starts as an IPv6 router.

Compile-time configuration

There are some compile-time configurations that are exposed to the via environment variables

  • MODE: (default: reass) Can be either reass (for hop-wise reassembly) or fwd (for fragment forwarding)
  • VRB_SIZE: (default: 16) The size of the virtual reassembly buffer (with mode fwd)
  • RBUF_SIZE_SOURCE: (default: 1) The size of the forwarder's reassembly buffer
  • REASS_TIMEOUT: (default: 10000000) Reassembly timeout in microseconds
  • FRAG_MSG_SIZE: (default: 64) Fragmentation buffer size
  • NETIF_PKTQ_POOL_SIZE: (default: 64) Network interface packet queue pool size
  • AGGRESSIVE_REASS: (default: 0) (De-)activate aggressive reassembly (override reassembly buffer when full)

Usage

Once the node is up a global address can be configured using

ifconfig <if> add <addr>

The default route to upstream can be configured using

nib route <if> default <next-hop link-local addr>

Once the experiment's network is set-up this way, the sending of periodic UDP packets can be started by using

source <sink global address> <port> <payload length> <number of packets> <delay1> [<delay2>]

With <delay1> either being the minimum delay if <delay2> is provided, or the mean of the randomized delay. If <delay2> is provided it is the maximum delay. The delay between packets is then uniquely distributed between <delay1> and <delay2>. If <delay2> is not provided the delay is uniquely distributed between 0.5×<delay1> and 1.5×<delay2>.