chore(relay): 会话起始打印浏览器握手头（cookie/protocol/extensions/referer）用于诊断

3DTank/tools/wss_server.js

@@ -506,6 +506,13 @@ WsServer.on('connection', (Client, Req) => {
   State.Log('=== 新客户端 ===');
   State.Log('来源: ' + (Req.socket.remoteAddress || '?') + '  Origin: ' + (Req.headers.origin || '无'));
   State.Log('模式: relay  上游: ' + UPSTREAM);
+  // 诊断：浏览器发给中继的握手头（判断中继有没有漏带握手层信息）
+  State.Log(
+    '客户端握手头: cookie=' + (Req.headers['cookie'] ? '有(' + Req.headers['cookie'].length + 'B)' : '无') +
+    '  protocol=' + (Req.headers['sec-websocket-protocol'] || '无') +
+    '  extensions=' + (Req.headers['sec-websocket-extensions'] || '无') +
+    '  referer=' + (Req.headers['referer'] || '无'),
+  );
 
   const Decoders = { c2s: new StreamDecoder(State, 'c2s'), s2c: new StreamDecoder(State, 's2c') };
   let Upstream = null;