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Lewis Marshall 9feec51e2d p2p: add network simulation framework (#14982) 
This commit introduces a network simulation framework which
can be used to run simulated networks of devp2p nodes. The
intention is to use this for testing protocols, performing
benchmarks and visualising emergent network behaviour.
2017-09-25 10:08:07 +02:00
..
ping-pong.go p2p: add network simulation framework (#14982) 2017-09-25 10:08:07 +02:00
ping-pong.sh p2p: add network simulation framework (#14982) 2017-09-25 10:08:07 +02:00
README.md p2p: add network simulation framework (#14982) 2017-09-25 10:08:07 +02:00

README.md

devp2p simulation examples

ping-pong

ping-pong.go implements a simulation network which contains nodes running a simple "ping-pong" protocol where nodes send a ping message to all their connected peers every 10s and receive pong messages in return.

To run the simulation, run go run ping-pong.go in one terminal to start the simulation API and ./ping-pong.sh in another to start and connect the nodes:

$ go run ping-pong.go
INFO [08-15|13:53:49] using sim adapter
INFO [08-15|13:53:49] starting simulation server on 0.0.0.0:8888...

$ ./ping-pong.sh
---> 13:58:12 creating 10 nodes
Created node01
Started node01
...
Created node10
Started node10
---> 13:58:13 connecting node01 to all other nodes
Connected node01 to node02
...
Connected node01 to node10
---> 13:58:14 done

Use the --adapter flag to choose the adapter type:

$ go run ping-pong.go --adapter exec
INFO [08-15|14:01:14] using exec adapter                       tmpdir=/var/folders/k6/wpsgfg4n23ddbc6f5cnw5qg00000gn/T/p2p-example992833779
INFO [08-15|14:01:14] starting simulation server on 0.0.0.0:8888...