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#!/usr/bin/env python3
"""Real-world load balancing test for vpnem API."""
import urllib.request
import json
import sys
BASE = "https://vpn.em-sysadmin.xyz"
def req(path, method="GET", data=None, headers=None):
"""Make HTTP request."""
url = BASE + path
h = headers or {}
h["Content-Type"] = "application/json"
body = json.dumps(data).encode() if data else None
rq = urllib.request.Request(url, data=body, headers=h, method=method)
try:
resp = urllib.request.urlopen(rq, timeout=10)
return json.loads(resp.read().decode())
except urllib.error.HTTPError as e:
print(f" ERROR {e.code}: {e.read().decode()[:200]}")
return None
except Exception as e:
print(f" ERROR: {e}")
return None
def get_recommend(client_ip):
"""Get recommendation for a client IP."""
return req("/api/v1/recommend", headers={"X-Forwarded-For": client_ip})
def connect(client_ip, server_ip, node_id):
"""Report connection."""
return req("/api/v1/connect", method="POST", data={
"server_ip": server_ip, "node_id": node_id
}, headers={"X-Forwarded-For": client_ip})
def disconnect(client_ip):
"""Report disconnection."""
return req("/api/v1/disconnect", method="POST", data={
"server_ip": ""
}, headers={"X-Forwarded-For": client_ip})
def main():
print("=" * 70)
print("VPNEM Load Balancing — Real Server Test")
print("=" * 70)
print()
# Step 1: Test recommendations for multiple "studios"
print("[1] Testing recommendations for 5 different studios...")
print()
studios = [
("195.10.20.1", "Barnaul Studio 1"),
("195.10.20.2", "Barnaul Studio 2"),
("91.50.60.1", "Moscow Studio"),
("46.30.20.1", "Novosibirsk Studio"),
("178.120.1.1", "Test Studio"),
]
recommendations = {}
for ip, name in studios:
rec = get_recommend(ip)
if rec:
server = rec.get("recommended_server_ip", "none")
reason = rec.get("reason", "unknown")
load = rec.get("load_info", "no info")
recommendations[ip] = server
print(f" {name:25s} → {server:15s} ({reason})")
print(f" Load: {load}")
else:
print(f" {name:25s} → ERROR")
print()
# Step 2: Check distribution — do different studios get different servers?
print("[2] Distribution check...")
servers_used = list(recommendations.values())
unique = set(servers_used)
print(f" Studios: {len(studios)}, Recommended IPs: {len(unique)}")
print(f" Servers used: {', '.join(unique)}")
if len(unique) > 1:
print(" ✅ GOOD — different studios get different servers")
else:
print(" ⚠️ All studios got the same server (possible if load is equal)")
print()
# Step 3: Simulate connections
print("[3] Simulating connections...")
nodes = {
"5.180.97.181": "nl-multi-181",
"5.180.97.197": "nl-multi-197",
"5.180.97.198": "nl-multi-198",
"5.180.97.199": "nl-multi-199",
}
for ip, name in studios:
srv = recommendations.get(ip)
nid = nodes.get(srv, "nl-multi-181")
resp = connect(ip, srv, nid)
if resp:
rec_srv = resp.get("recommended_server_ip", "none")
print(f" {name:25s} connected → {srv:15s} (next rec: {rec_srv})")
else:
print(f" {name:25s} connect FAILED")
print()
# Step 4: Check recommendations AFTER connections (should shift)
print("[4] Recommendations AFTER connections (should re-balance)...")
new_ip = "100.100.100.1"
rec = get_recommend(new_ip)
if rec:
srv = rec.get("recommended_server_ip", "none")
reason = rec.get("reason", "unknown")
load = rec.get("load_info", "no info")
print(f" New Studio ({new_ip}) → {srv:15s} ({reason})")
print(f" Load: {load}")
# The new studio should NOT get the most loaded server
else:
print(f" ERROR getting recommendation")
print()
# Step 5: Disconnect one studio, check if recommendation changes
print("[5] Disconnecting first studio and checking rebalance...")
disc_ip = studios[0][0]
disconnect(disc_ip)
print(f" Disconnected {studios[0][1]} ({disc_ip})")
rec = get_recommend("200.200.200.1")
if rec:
srv = rec.get("recommended_server_ip", "none")
load = rec.get("load_info", "no info")
print(f" New Studio (200.200.200.1) → {srv:15s}")
print(f" Load: {load}")
else:
print(" ERROR")
print()
# Step 6: Clean up
print("[6] Cleaning up — disconnecting all test studios...")
for ip, name in studios:
disconnect(ip)
disconnect(new_ip)
disconnect("200.200.200.1")
print(" Done")
print()
print("=" * 70)
print("Test complete.")
print("=" * 70)
if __name__ == "__main__":
main()
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