82 lines
2.4 KiB
Python
82 lines
2.4 KiB
Python
#!/usr/bin/env python3
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"""test-nc-public.py - 模拟 frpc 行为：发 PROXY v1 + TLS ClientHello SNI=nc.gvsds.com 到 127.0.0.1:10443"""
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import socket
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import ssl
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import time
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import sys
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HOST = "127.0.0.1"
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PORT = 10443
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SNI = "nc.gvsds.com"
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PROXY_SRC_IP = "8.8.8.8" # 模拟客户端公网 IP
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PROXY_SRC_PORT = 54321
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def build_proxy_v1_header(src_ip, src_port, dst_ip, dst_port):
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return f"PROXY TCP4 {src_ip} {dst_ip} {src_port} {dst_port}\r\n".encode("ascii")
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def main():
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# 1) 裸 TCP 到 10443
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raw = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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raw.settimeout(180)
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raw.connect((HOST, PORT))
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# 2) 发 PROXY v1 header
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proxy_hdr = build_proxy_v1_header(PROXY_SRC_IP, PROXY_SRC_PORT, HOST, PORT)
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print(f" -> PROXY header: {proxy_hdr!r}")
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raw.sendall(proxy_hdr)
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# 3) 包 TLS
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ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
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ctx.check_hostname = False
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ctx.verify_mode = ssl.CERT_NONE
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ctx.set_alpn_protocols(["http/1.1"]) # 强制 http/1.1，避免 h2 frame 复杂度
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s = ctx.wrap_socket(raw, server_hostname=SNI)
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print(f" TLS SNI: {SNI}, ALPN: {s.selected_alpn_protocol()}")
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# 4) 发 HTTP/1.1（绕开 h2 SETTINGS frame 复杂度）
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req = (
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f"GET /login HTTP/1.1\r\n"
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f"Host: {SNI}\r\n"
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f"User-Agent: test-nc-public/1.0\r\n"
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f"Accept: */*\r\n"
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f"Connection: close\r\n"
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f"\r\n"
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).encode("ascii")
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t0 = time.time()
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s.sendall(req)
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print(f" -> sent {len(req)} bytes request")
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# 5) 读响应
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chunks = []
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while True:
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try:
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data = s.recv(65536)
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except socket.timeout:
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print(" [timeout 30s]")
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break
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if not data:
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break
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chunks.append(data)
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s.close()
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elapsed = time.time() - t0
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body = b"".join(chunks)
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head, _, body = body.partition(b"\r\n\r\n")
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status_line = head.split(b"\r\n", 1)[0].decode("latin-1", errors="replace")
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print(f" Status: {status_line}")
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print(f" Body size: {len(body)} bytes")
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print(f" Elapsed: {elapsed:.2f}s")
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print(f" Body preview (前 500 字符):")
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text = body[:500].decode("utf-8", errors="replace")
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for line in text.splitlines()[:15]:
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print(f" {line}")
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return 0 if b"200 OK" in head or b"302" in head else 1
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if __name__ == "__main__":
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try:
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sys.exit(main())
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except Exception as e:
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print(f" EXCEPTION: {type(e).__name__}: {e}")
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sys.exit(2)
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