[SOLVED]The following code for setting proxy fails in case of manual proxy settings

[adnan]

What is wrong with the code:
if i use system proxy the error displayed is "connection refused"
and if i use manual proxy (proxy address being same) error displayed is "Host not found"

The proxy server is squid with proxy-address:172.16.28.11 and port:3128

Besides, it also doesn't work for localhost proxy like the one created using tor or dynamic port forwarding!

@ if(settDialog.ui->no_proxy->isChecked())
{
QNetworkProxyFactory::setUseSystemConfiguration (false);
QNetworkProxy::setApplicationProxy(QNetworkProxy::NoProxy);
}
else if(settDialog.ui->use_s_proxy->isChecked())
{
QNetworkProxyFactory::setUseSystemConfiguration (true);
}
else if(settDialog.ui->man_proxy->isChecked())
{
QNetworkProxyFactory::setUseSystemConfiguration (false);
proxy.setHostName(settDialog.ui->proxy_addr->text());
proxy.setPort(settDialog.ui->port_num->value());
if(settDialog.ui->proxyType->currentIndex()==0)
proxy.setType(QNetworkProxy::HttpProxy);
else if(settDialog.ui->proxyType->currentIndex()==1)
proxy.setType(QNetworkProxy::Socks5Proxy);
else if(settDialog.ui->proxyType->currentIndex()==2)
proxy.setType(QNetworkProxy::FtpCachingProxy);
proxy.setHostName(settDialog.ui->username->text());
proxy.setPassword(settDialog.ui->pwd->text());
QNetworkProxy::setApplicationProxy(proxy);
}@

[adnan]

@if(!settDialog.ui->username->text().isEmpty())
proxy.setHostName(settDialog.ui->username->text()); if(!settDialog.ui->pwd->text().isEmpty())
proxy.setPassword(settDialog.ui->pwd->text());@