diff --git a/demo_multi_client.py b/demo_multi_client.py
new file mode 100644
index 0000000..e4a9d9e
--- /dev/null
+++ b/demo_multi_client.py
@@ -0,0 +1,51 @@
+import matplotlib.pyplot as plt
+import socket
+import time
+import threading
+
+from coapthon.client.helperclient import HelperClient
+from coapthon.client.superviseur_local import SuperviseurLocal, SuperviseurLocalFiltre
+from coapthon.utils import parse_uri
+
+N_rep = 100
+N_client = 25
+
+host, port, path = parse_uri("coap://localhost:5683/basic")
+try:
+    tmp = socket.gethostbyname(host)
+    host = tmp
+except socket.gaierror:
+    pass
+
+clients = [HelperClient(server=(host, port)) for _ in range(N_client)]
+
+supers = []
+for client in clients:
+    client.protocol.superviseur = SuperviseurLocal(client)
+    supers.append(client.protocol.superviseur)
+
+def experience(client, N_rep):
+    for n_rep in range(N_rep):
+        response = client.get(path)
+    client.stop()
+
+threads = [threading.Thread(target=experience, args=[client, N_rep], name='Thread-experience-{}'.format(n)) for n, client in enumerate(clients)]
+
+for thread in threads :
+    thread.start()
+
+for thread in threads :
+    thread.join()
+
+fig, axs = plt.subplots(3, sharex=True)
+for n, ax in enumerate(axs) :
+    ax.hist(supers[n].RTTs, 100, density=True)
+
+axs[-1].set_xlabel('RTT (s)')
+# axs[-1].set_xlim(left=0)
+
+fig.tight_layout()
+fig.savefig('demo.png')
+
+for super in supers:
+    print(super.min_RTT, super.avg_RTT, super.tau_retransmission, super._n_tokken)
\ No newline at end of file