fix: RDP health check uses correct 19-byte X.224 packet

Yesterday's malformed packet (TPKT len=0x1b mismatch) made health check always fail -> every enable triggered needless TermService restarts and false 'STILL FAILING' reports (root cause of 2026-07-23 morning incident)
2026-07-23 13:48:08 +08:00
parent 6553e51b8b
commit b3b8c8dec4
1 changed files with 3 additions and 2 deletions
@@ -246,8 +246,9 @@ def _rdp_health_check():
    import socket as _sk
    try:
        _s = _sk.create_connection(('127.0.0.1', 3389), timeout=5)
-        # X.224 Connection Request + RDP Negotiation Request (HYBRID)
-        _s.sendall(bytes.fromhex('0300001b13e0000000000001000800020000000000000000000000000'))
+        # X.224 Connection Request + RDP Negotiation Request (SSL|HYBRID|RDSTLS)
+        # TPKT len=0x13(19) 必须等于实际包长，否则服务器正确 RST（2026-07-22 误诊教训）
+        _s.sendall(bytes.fromhex('030000130ee00000000000010008000b000000'))
        _s.settimeout(5)
        _resp = _s.recv(1024)
        _s.close()