diff options
Diffstat (limited to 'src/network')
| -rw-r--r-- | src/network/socket/qnativesocketengine_unix.cpp | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/src/network/socket/qnativesocketengine_unix.cpp b/src/network/socket/qnativesocketengine_unix.cpp index 8fe0bb4aad..1b7dfe53ff 100644 --- a/src/network/socket/qnativesocketengine_unix.cpp +++ b/src/network/socket/qnativesocketengine_unix.cpp @@ -745,14 +745,23 @@ qint64 QNativeSocketEnginePrivate::nativeBytesAvailable() const { int nbytes = 0; // gives shorter than true amounts on Unix domain sockets. - qint64 available = 0; - if (qt_safe_ioctl(socketDescriptor, FIONREAD, (char *) &nbytes) >= 0) - available = (qint64) nbytes; + qint64 available = -1; + +#if defined (SO_NREAD) + if (socketType == QAbstractSocket::UdpSocket) { + socklen_t sz = sizeof nbytes; + if (!::getsockopt(socketDescriptor, SOL_SOCKET, SO_NREAD, &nbytes, &sz)) + available = nbytes; + } +#endif + + if (available == -1 && qt_safe_ioctl(socketDescriptor, FIONREAD, (char *) &nbytes) >= 0) + available = nbytes; #if defined (QNATIVESOCKETENGINE_DEBUG) qDebug("QNativeSocketEnginePrivate::nativeBytesAvailable() == %lli", available); #endif - return available; + return available > 0 ? available : 0; } bool QNativeSocketEnginePrivate::nativeHasPendingDatagrams() const |