scp does download all files when embeded in a QProcess

odelaune

Hello, my code runs on Windows and has to download files from a remote directory. To do so, I use a command like

scp user@host:/path/to/folder/* /my/local/directory

It works as expected (all files are downloaded) when I run this command in the terminal. But when I try to use this command in a QProcess, it downloads only a few files (not all) and stop downloading the remaining files.

The QProcess does not emit any error or message.

Here is the simplified code relative to QProcess (I do not add the code that manages errors)

QProcess process;
process.start("C:\\Windows\\System32\\OpenSSH\\scp.exe", QStringList("user@host:/path/to/folder/*", "/my/local/directory"));

Do you have any idea of what could happen?

odelaune

Thanks for your advices, I have already implemented them. Actually, my problem was that all files where not yet created in the remoted folder before I start the scp command.

Christian Ehrlicher

You should wait until the process has finished: https://doc.qt.io/qt-6/qprocess.html#waitForFinished - or even better, use signals and slots and let the QProcess run asynchronously to not block the ui in between.

aha_1980

@odelaune: And just to add to @Christian-Ehrlicher: if the QProcess is a stack variable, it is destroyed when going out of scope and therefore the process stops. You will need to make it a member variable.

odelaune

Thanks for your advices, I have already implemented them. Actually, my problem was that all files where not yet created in the remoted folder before I start the scp command.