imap error after received Gimap ready for requests - imap

Question

I have an error when i run the code.
the following is the code:
void smtp_listener::imapLogin(QString reply)
{
print_D(FUNC);
print_D(QString("this is "+reply+"well"));
if(reply.contains("OK"))
{
QString msg = QString("user %1").arg(user);
print_D(msg);
*t << msg <<"\r\r\n";
t->flush();
setState(POP3_Pass);
}
else
{
print_E("ERROR :"+reply,FUNC,__LINE__);
quitConn();
setState(POP3_Quit);
}
}
void smtp_listener::pop3Pass(QString reply)
{
print_D(FUNC);
print_D(QString("this is "+reply+" well"));
if(reply.contains("+OK"))
{
QString msg = QString("pass %1").arg(pass);
*t << msg <<"\r\n";
t->flush();
setState(POP3_Stat);
}
else
{
print_E("ERROR :"+reply,FUNC,__LINE__);
quitConn();
setState(POP3_Quit);
}
}
the error i give after i debug:
[Debug] "Email account : connected."
[Debug] "void smtp_listener::imapLogin(QString)"
[Debug] "this is * OK Gimap ready for requests from 140.101.159.251
q2-v6mb85227685wrd
well"
[Debug] "user chairouyih#gmail.com"
[Debug] "void smtp_listener::pop3Pass(QString)"
[Debug] "this is user BAD Unknown command q2-v6mb85227685wrd
well"
"[Error] ERROR :user BAD Unknown command q2-v6mb85227685wrd
at func=void smtp_listener::pop3Pass(QString) Line=361"
[Debug] "void smtp_listener::quitConn()"
[Debug] "void smtp_listener::pop3Quit(QString)"
[Debug] "* BAD invalid tag q2-v6mb85227685wrd

Answer 1

You are using POP3 commands with an IMAP server. They are not compatible, and their language is very different.
For one, every IMAP command has a tag, and basic logging in is done with a LOGIN command. It would look something like this:
a001 LOGIN user#gmail.com "password"
If you want to use POP3, connect to the pop3 server at pop.gmail.com, with TLS enabled on port 995.