github.com/inphi/go-ethereum@v1.9.7/p2p/simulations/examples/README.md (about)

     1  # devp2p simulation examples
     2  
     3  ## ping-pong
     4  
     5  `ping-pong.go` implements a simulation network which contains nodes running a
     6  simple "ping-pong" protocol where nodes send a ping message to all their
     7  connected peers every 10s and receive pong messages in return.
     8  
     9  To run the simulation, run `go run ping-pong.go` in one terminal to start the
    10  simulation API and `./ping-pong.sh` in another to start and connect the nodes:
    11  
    12  ```
    13  $ go run ping-pong.go
    14  INFO [08-15|13:53:49] using sim adapter
    15  INFO [08-15|13:53:49] starting simulation server on 0.0.0.0:8888...
    16  ```
    17  
    18  ```
    19  $ ./ping-pong.sh
    20  ---> 13:58:12 creating 10 nodes
    21  Created node01
    22  Started node01
    23  ...
    24  Created node10
    25  Started node10
    26  ---> 13:58:13 connecting node01 to all other nodes
    27  Connected node01 to node02
    28  ...
    29  Connected node01 to node10
    30  ---> 13:58:14 done
    31  ```
    32  
    33  Use the `--adapter` flag to choose the adapter type:
    34  
    35  ```
    36  $ go run ping-pong.go --adapter exec
    37  INFO [08-15|14:01:14] using exec adapter                       tmpdir=/var/folders/k6/wpsgfg4n23ddbc6f5cnw5qg00000gn/T/p2p-example992833779
    38  INFO [08-15|14:01:14] starting simulation server on 0.0.0.0:8888...
    39  ```