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use Qt to query interfaces for correct local address

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This commit is contained in:
Stephen Birarda 2013-10-16 17:06:39 -07:00
parent e40ab5d13f
commit 330e78920a
1 changed files with 27 additions and 25 deletions
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52
libraries/shared/src/UDPSocket.cpp
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@ -22,6 +22,8 @@
#endif
#include <QtCore/QDebug>
#include <QtNetwork/QNetworkInterface>
#include <QtNetwork/QHostAddress>
#include "Logging.h"
#include "UDPSocket.h"
@ -88,35 +90,35 @@ void copySocketToEmptySocketPointer(sockaddr** destination, const sockaddr* sour
}
int getLocalAddress() {
// get this node's local address so we can pass that to DS
struct ifaddrs* ifAddrStruct = NULL;
struct ifaddrs* ifa = NULL;
int family;
int localAddress = 0;
#ifndef _WIN32
getifaddrs(&ifAddrStruct);
for (ifa = ifAddrStruct; ifa != NULL; ifa = ifa->ifa_next) {
family = ifa->ifa_addr->sa_family;
if (family == AF_INET) {
localAddress = ((sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr;
static int localAddress = 0;
if (localAddress == 0) {
foreach(const QNetworkInterface &interface, QNetworkInterface::allInterfaces()) {
if (interface.flags() & QNetworkInterface::IsUp
&& interface.flags() & QNetworkInterface::IsRunning
&& interface.flags() & ~QNetworkInterface::IsLoopBack) {
// we've decided that this is the active NIC
// enumerate it's addresses to grab the IPv4 address
foreach(const QNetworkAddressEntry &entry, interface.addressEntries()) {
// make sure it's an IPv4 address that isn't the loopback
if (entry.ip().protocol() == QAbstractSocket::IPv4Protocol && !entry.ip().isLoopback()) {
qDebug("Node's local address is %s\n", entry.ip().toString().toLocal8Bit().constData());
// set our localAddress and break out
localAddress = htonl(entry.ip().toIPv4Address());
break;
}
}
}
if (localAddress != 0) {
break;
}
}
}
freeifaddrs(ifAddrStruct);
#else
// Get the local hostname
char szHostName[255];
gethostname(szHostName, 255);
struct hostent *host_entry;
host_entry = gethostbyname(szHostName);
char * szLocalIP;
szLocalIP = inet_ntoa (*(struct in_addr *)*host_entry->h_addr_list);
localAddress = inet_addr(szLocalIP);
#endif
// return the looked up local address
return localAddress;
}