diff options
Diffstat (limited to 'src/network/socket/qnativesocketengine_unix.cpp')
-rw-r--r-- | src/network/socket/qnativesocketengine_unix.cpp | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/src/network/socket/qnativesocketengine_unix.cpp b/src/network/socket/qnativesocketengine_unix.cpp index c12ae9730f..1e69aebb54 100644 --- a/src/network/socket/qnativesocketengine_unix.cpp +++ b/src/network/socket/qnativesocketengine_unix.cpp @@ -678,10 +678,16 @@ static bool multicastMembershipHelper(QNativeSocketEnginePrivate *d, if (interface.isValid()) { const QList<QNetworkAddressEntry> addressEntries = interface.addressEntries(); - if (!addressEntries.isEmpty()) { - QHostAddress firstIP = addressEntries.first().ip(); - mreq4.imr_interface.s_addr = htonl(firstIP.toIPv4Address()); - } else { + bool found = false; + for (const QNetworkAddressEntry &entry : addressEntries) { + const QHostAddress ip = entry.ip(); + if (ip.protocol() == QAbstractSocket::IPv4Protocol) { + mreq4.imr_interface.s_addr = htonl(ip.toIPv4Address()); + found = true; + break; + } + } + if (!found) { d->setError(QAbstractSocket::NetworkError, QNativeSocketEnginePrivate::NetworkUnreachableErrorString); return false; |