Orderer/client.py

import json
import requests
import connection

host = 'http://127.0.0.1:' + str(connection.port)

headers = {'Content-type': 'application/json', 'Accept': 'text/plain'}
r = requests.post(host + '/register', data=json.dumps({"username": "user1", "password": "qwertz"}), headers=headers)
print(r.content)

r = requests.post(host + '/login', data=json.dumps({"username": "user1", "password": "qwertz"}), headers=headers)
print(r.content)