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Examples: Add support for custom nameserver to dnslookup

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Updated dnslookup example to take an optional nameserver argument
for doing DNS lookup against a specific nameserver.

Task-number: QTBUG-30166
Change-Id: I9f46f9f766b56f770d2c8372e3bfad5c71023c73
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This commit is contained in:
Mandeep Sandhu 2013-10-17 13:51:18 +05:30 committed by The Qt Project
parent 1de459a6dd
commit 60dc35e428
1 changed files with 12 additions and 1 deletions
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13
examples/network/dnslookup/dnslookup.cpp
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@ -50,7 +50,7 @@
static void usage() { static void usage() {
printf("Qt DNS example - performs DNS lookups\n" printf("Qt DNS example - performs DNS lookups\n"
"Usage: dnslookup [-t <type>] name\n\n"); "Usage: dnslookup [-t <type>] [-s nameserver] name\n\n");
} }
DnsManager::DnsManager() DnsManager::DnsManager()
@ -93,6 +93,17 @@ void DnsManager::execute()
return; return;
} }
} }
if (args.size() > 1 && args.first() == "-s") {
args.takeFirst();
const QString ns = args.takeFirst();
QHostAddress nameserver(ns);
if (nameserver.isNull() || nameserver.protocol() == QAbstractSocket::UnknownNetworkLayerProtocol) {
printf("Bad nameserver address: %s\n", qPrintable(ns));
QCoreApplication::instance()->quit();
return;
}
dns->setNameserver(nameserver);
}
if (args.isEmpty()) { if (args.isEmpty()) {
usage(); usage();
QCoreApplication::instance()->quit(); QCoreApplication::instance()->quit();