Re: error message "psql: expected authentication request from server, but received " when using psql to connect remote database

"TIAN Justin" <yongjuntian@alcatel-lucent.com> writes:
> Thanks for your quick response; the server we used is 8.1.4,
> The error when using client 8.1.4,
>> psql -U or -p 2222 -d testdb -h localhost
> Output:
> psql: expected authentication request from server, but received

What is in the server's pg_hba.conf file?  I'm particularly wondering
what auth method is being selected ...

            regards, tom lane