1 files changed, 16 insertions, 9 deletions
diff --git a/src/network/access/qftp.cpp b/src/network/access/qftp.cpp
index 4f17dc8..5931a67 100644
--- a/src/network/access/qftp.cpp
+++ b/src/network/access/qftp.cpp
@@ -314,8 +314,10 @@ void QFtpDTP::connectToHost(const QString & host, quint16 port)
 {
     bytesFromSocket.clear();
 
-    if (socket)
+    if (socket) {
         delete socket;
+        socket = 0;
+    }
     socket = new QTcpSocket(this);
     socket->setObjectName(QLatin1String("QFtpDTP Passive state socket"));
     connect(socket, SIGNAL(connected()), SLOT(socketConnected()));
@@ -869,6 +871,9 @@ void QFtpPI::connected()
 #if defined(QFTPPI_DEBUG)
 //    qDebug("QFtpPI state: %d [connected()]", state);
 #endif
+    // try to improve performance by setting TCP_NODELAY
+    commandSocket.setSocketOption(QAbstractSocket::LowDelayOption, 1);
+
     emit connectState(QFtp::Connected);
 }
 
@@ -1291,9 +1296,9 @@ int QFtpPrivate::addCommand(QFtpCommand *cmd)
     \class QFtp
     \brief The QFtp class provides an implementation of the client side of FTP protocol.
 
-    \ingroup io
+    \ingroup network
     \inmodule QtNetwork
-    \mainclass
+
 
     This class provides a direct interface to FTP that allows you to
     have more control over the requests. However, for new
@@ -1385,7 +1390,7 @@ int QFtpPrivate::addCommand(QFtpCommand *cmd)
     \warning The current version of QFtp doesn't fully support
     non-Unix FTP servers.
 
-    \sa QHttp, QNetworkAccessManager, QNetworkRequest, QNetworkReply,
+    \sa QNetworkAccessManager, QNetworkRequest, QNetworkReply,
         {FTP Example}
 */
 
@@ -1658,11 +1663,12 @@ QFtp::QFtp(QObject *parent, const char *name)
 */
 int QFtp::connectToHost(const QString &host, quint16 port)
 {
-    d_func()->pi.transferConnectionExtended = true;
     QStringList cmds;
     cmds << host;
     cmds << QString::number((uint)port);
-    return d_func()->addCommand(new QFtpCommand(ConnectToHost, cmds));
+    int id = d_func()->addCommand(new QFtpCommand(ConnectToHost, cmds));
+    d_func()->pi.transferConnectionExtended = true;
+    return id;
 }
 
 /*!
@@ -1721,17 +1727,18 @@ int QFtp::close()
 */
 int QFtp::setTransferMode(TransferMode mode)
 {
+    int id = d_func()->addCommand(new QFtpCommand(SetTransferMode, QStringList()));
     d_func()->pi.transferConnectionExtended = true;
     d_func()->transferMode = mode;
-    return d_func()->addCommand(new QFtpCommand(SetTransferMode, QStringList()));
+    return id;
 }
 
 /*!
     Enables use of the FTP proxy on host \a host and port \a
     port. Calling this function with \a host empty disables proxying.
 
-    QFtp does not support FTP-over-HTTP proxy servers. Use QHttp for
-    this.
+    QFtp does not support FTP-over-HTTP proxy servers. Use
+    QNetworkAccessManager for this.
 */
 int QFtp::setProxy(const QString &host, quint16 port)
 {