220 (vsFTPd 3.0.2)
530 Login incorrect.
530 Please login with USER and PASS.
211-Features:
 EPRT
 EPSV
 MDTM
 PASV
 REST STREAM
 SIZE
 TVFS
 UTF8
211 End

Portmap
Program	Version	Protocol	Port
portmapper	4	tcp	111
portmapper	3	tcp	111
portmapper	2	tcp	111
portmapper	4	udp	111
portmapper	3	udp	111
portmapper	2	udp	111

HTTP/1.1 401 Unauthorized
Content-Type: application/json; charset=utf-8
Date: Sat, 15 Mar 2025 15:04:50 GMT
Content-Length: 25

{"msg":"签名不存在"}

HTTP/1.1 400 Bad Request
Server: openresty/1.19.3.1
Date: Tue, 25 Feb 2025 11:16:18 GMT
Content-Type: text/html
Content-Length: 663
Connection: close