From 4c663bae6d0ba92f3542e1e4f297b5f0839b5187 Mon Sep 17 00:00:00 2001
From: Jake McGinty <me@jake.su>
Date: Fri, 18 May 2018 01:42:43 -0700
Subject: tests: add peer stress test

---
 tests/peer_stress.py | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100755 tests/peer_stress.py

diff --git a/tests/peer_stress.py b/tests/peer_stress.py
new file mode 100755
index 0000000..e808060
--- /dev/null
+++ b/tests/peer_stress.py
@@ -0,0 +1,66 @@
+#!/usr/bin/env python3
+
+import base64
+import subprocess
+import ipaddress
+import os
+import nacl.utils
+import sys
+from nacl.public import PrivateKey
+from tqdm import tqdm
+from timeit import default_timer as timer
+
+NETWORK=ipaddress.ip_network('10.99.0.0/16')
+
+def shell(cmd, input=''):
+    return subprocess.run(cmd.split(' '), input=input.encode('utf-8'), stdout=subprocess.PIPE)
+
+class Peer:
+    def __init__(self, ip):
+        privkey = PrivateKey.generate()
+        self.privkey = base64.b64encode(bytes(privkey)).decode('utf-8')
+        self.pubkey = base64.b64encode(bytes(privkey.public_key)).decode('utf-8')
+        self.ip = ip
+
+if os.geteuid() != 0:
+    print("must be root.")
+    exit()
+
+peers = []
+hosts = list(NETWORK.hosts())
+
+print("generating {} peers".format(len(hosts)))
+
+gen_start = timer()
+for ip in tqdm(hosts):
+    peers.append(Peer(ip))
+gen_end = timer()
+
+print("finished generating in {:.2f}".format(gen_end - gen_start))
+
+if len(sys.argv) > 1:
+    print("using " + sys.argv[1])
+    print(shell(sys.argv[1] + " utun8").stdout.decode('utf-8').strip())
+else:
+    print("using kernel wireguard")
+    shell("ip link add dev utun8 type wireguard").check_returncode()
+
+add_start = timer()
+print("adding peers to device")
+cmds = []
+for peer in tqdm(peers):
+    cmds.append("peer {} allowed-ips {}/32".format(peer.pubkey, peer.ip))
+    if len(cmds) > 1000:
+        ret = shell("wg set utun8 " + ' '.join(cmds))
+        if ret.returncode != 0:
+            print("ERROR " + ret.stdout.decode('utf-8').strip())
+            exit()
+        cmds = []
+if len(cmds) > 0:
+    shell("wg set utun8 " + ' '.join(cmds))
+add_end = timer()
+
+print("finished adding in {:.2f}".format(add_end - add_start))
+
+# print("destroying interface")
+# os.remove("/var/run/wireguard/utun8.sock")
-- 
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