On my windowXP machine,I setup a Winsshd server, and use the command "curl -T test.txt -u hdp:123 sftp://127.0.0.1:22" , it works fine, but when I change the port "22" to "ssh", it failed and prompt "curl: (6) Couldn't resolve host '127.0.0.1:ssh'", I donot know why?