A simple PBFT protocol over HTTP, using python3 asyncio/aiohttp. This is just a proof of concept implementation.

Configuration

A pbft.yaml config file is needed for the nodes to run. A sample is as follows:

nodes:
    - host: localhost
      port: 30000
    - host: localhost
      port: 30001
    - host: localhost
      port: 30002
    - host: localhost
      port: 30003

clients:
    - host: localhost
      port: 20001
    - host: localhost
      port: 20002

loss%: 0

ckpt_interval: 10

retry_times_before_view_change: 2

sync_interval: 5

misc:
    network_timeout: 5

Run the nodes

for i in {0..3}; do python ./node.py -i $i -lf False & done

Send request to any one of the nodes

e.g. curl -vLX POST --data '{ 'id': (0, 0), 'client_url': http://localhost:20001/reply, 'timestamp': time.time(),'data': 'data_string'}' http://localhost:30000/request The id here is a tuple of (client_id, seq_id), client_url is the url for sending request to the get_reply function, timestamp is the current time, data is whatever data in string format,

Run the clients

for i in {0...2}; do python client.py -id $i -nm 5 & done

Environment

Python: 3.5.3
aiohttp: 3.4.4
yaml: 3.12