c++ - SMTP认证QT/C++

我正在尝试为使用Ct中的Qt框架创建的自定义应用程序创建一个简单的发送邮件功能。在SMTP尝试进行身份验证的时候，我非常接近，并且终其一生都无法使它正常工作。这是我正在处理的

do {
    responseLine = socket->readLine();
    response += responseLine;
}
while ( socket->canReadLine() && responseLine[3] != ' ' );
    responseLine.truncate( 3 );
if ( state == Init && responseLine[0] == '2' ) {
    // banner was okay, let's go on
    *t << "HELO there\r\n";
    t->flush();
    state = Auth;
} else if (state == Auth && responseLine[0] == '2') {
    *t << "STARTTLS\r\n";
    *t << "AUTH PLAIN\r\n";
    t->flush();
    state = User;
} else if (state == User && responseLine[0] == '2') {
    *t << "username\r\n";
    t->flush();
    state = Pass;
} else if (state == Pass && responseLine[0] == '2') {
    *t << "pass\r\n";
    t->flush();
    state = Mail;
} else if ( state == Mail && responseLine[0] == '2' ) {
    // HELO response was okay (well, it has to be)
    *t << "MAIL FROM: " << from << "\r\n";
            t->flush();
    state = Rcpt;
} else if ( state == Rcpt && responseLine[0] == '2' ) {
    *t << "RCPT TO: " << rcpt << "\r\n"; //r
            t->flush();
    state = Data;
} else if ( state == Data && responseLine[0] == '2' ) {
    *t << "DATA\r\n";
            t->flush();
    state = Body;
} else if ( state == Body && responseLine[0] == '3' ) {
    *t << message << "\r\n.\r\n";
            t->flush();
    state = Quit;
} else if ( state == Quit && responseLine[0] == '2' ) {
    *t << "QUIT\r\n";
            t->flush();
    // here, we just close.
    state = Close;
    emit status( tr( "Message sent" ) );
} else if ( state == Close ) {
    deleteLater();
    return;
} else {
    // something broke.

最佳答案

您正在使用QTextStream吗？好像错了QTextStream用于编写编码的文本，并且会困惑编码和行尾，而这并不是实现协议(protocol)时想要的。最好使用QByteArray(而不是QString)和QDataStream而不是QTextStream，或者为了更好地进行错误处理，请直接写入套接字。