import socket

HOST = '127.0.0.1'
PORT = 28900

client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect((HOST, PORT))
print('Connection to ' + HOST + ':' + str(PORT) + ' successful.')

message = b"query"
print("Sending: %s" % message)
n = client.send(message)
if n != len(message):
        print('Error while sending.')
else:
        print('Sent.')

print('Receiving...')
donnees = client.recv(1024)
print('Received:', donnees)

print('Disconnection.')
client.close()