About to connect() to proxy 10.999.999.99 port 81 (#0)
Trying 10.999.999.99... connected
Connected to 10.999.999.99 (10.999.999.99) port 81 (#0)
Proxy auth using Basic with user ''
Server auth using Basic with user 'upuser'
PUT ftp://upuser:uppswd@ftp.xxxxxxxxxxx.com/mnn/fromSb.txt;type=i HTTP/1.1
Proxy-Authorization: Basic Og==
Authorization: Basic cHVwZGF0ZToxcHVwZGF0ZSE=
Host: ftp.xxxxxxxxxxx.com:21
Accept: */*
Proxy-Connection: Keep-Alive
Transfer-Encoding: chunked
Expect: 100-continue
HTTP/1.1 501 Not Implemented
Cache-Control: no-cache
Pragma: no-cache
Content-Type: text/html; charset=utf-8
HTTP/1.1 proxy connection set close!
Proxy-Connection: close
Connection: close
Content-Length: 600
Access Denied
Access Denied (not_implemented)
Your requested operation: "PUT " is not supported.
For assistance, contact your network support team.