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54b7647 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | import asyncio
import json
import socket
import dns.resolver # To handle DNS resolution using custom DNS server
from fastapi import FastAPI, WebSocket, WebSocketDisconnect
from fastapi.responses import HTMLResponse
import uvicorn
app = FastAPI()
# Function to resolve DNS with a custom DNS server (4.2.2.4)
def resolve_with_custom_dns(domain: str, dns_server: str = "4.2.2.4"):
try:
resolver = dns.resolver.Resolver()
resolver.nameservers = [dns_server] # Set the custom DNS server
answers = resolver.resolve(domain)
for answer in answers:
print(f"Resolved {domain} to {answer.to_text()}")
return [answer.to_text() for answer in answers]
except Exception as e:
print(f"[!] Error resolving {domain}: {e}")
return None
@app.get("/")
async def root():
html_content = """
<!DOCTYPE html>
<html>
<head>
<title>WebSocket Proxy Server</title>
<style>
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background-color: #f4f4f9;
color: #333;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
margin: 0;
}
.container {
background: white;
padding: 40px;
border-radius: 10px;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
text-align: center;
}
h1 {
color: #2c3e50;
}
p {
font-size: 1.1em;
color: #555;
}
.status {
display: inline-block;
margin-top: 20px;
padding: 10px 20px;
background-color: #2ecc71;
color: white;
border-radius: 5px;
font-weight: bold;
}
</style>
</head>
<body>
<div class="container">
<h1>Proxy Server Node</h1>
<p>This server is running and ready to accept WebSocket tunnel connections.</p>
<div class="status">System Online</div>
</div>
</body>
</html>
"""
return HTMLResponse(content=html_content, status_code=200)
@app.websocket("/ws")
async def websocket_endpoint(websocket: WebSocket):
await websocket.accept()
try:
# 1. Receive the target destination from the proxy
init_data = await websocket.receive_text()
target = json.loads(init_data)
host = target.get("host")
port = target.get("port")
# 2. Resolve DNS using custom DNS server (4.2.2.4)
#print(f"[*] Resolving DNS for {host} using 4.2.2.4")
resolved_ips = resolve_with_custom_dns(host, dns_server="4.2.2.4")
if resolved_ips is None:
await websocket.send_text(json.dumps({"status": "error", "message": "DNS resolution failed"}))
await websocket.close()
return
# Pick the first resolved IP address
ip = resolved_ips[0]
#print(f"[*] Resolved {host} to {ip}")
# 3. Open TCP connection to the resolved IP
#print(f"[*] Connecting to remote {ip}:{port}")
remote_reader, remote_writer = await asyncio.open_connection(ip, port)
await websocket.send_text(json.dumps({"status": "success"}))
# 4. Forwarding Loops
async def ws_to_tcp():
try:
while True:
data = await websocket.receive_bytes()
remote_writer.write(data)
await remote_writer.drain()
except Exception:
pass
finally:
remote_writer.close()
async def tcp_to_ws():
try:
while True:
data = await remote_reader.read(4096)
if not data:
break
await websocket.send_bytes(data)
except Exception:
pass
finally:
await websocket.close()
await asyncio.gather(ws_to_tcp(), tcp_to_ws())
except Exception as e:
print(f"[!] Server Error: {e}")
try:
await websocket.send_text(json.dumps({"status": "error", "message": str(e)}))
await websocket.close()
except:
pass
if __name__ == "__main__":
uvicorn.run(app, host="0.0.0.0", port=7860) |