[winswitch] How to send file from server and from client (html5 client)

[Eric Grammatico]

Hi Antoine,

Thanks a lot for your reply and the update on the wiki.

I have validated the file transfer from server to xpra_client. I do believe the user should be notified about file transfer through the GUI. The tray icon is a good candidate for this.

I definitively vote for the generic file downloads (and uploads) for html5.

In fact I was about to create tickets for file transfer notifications for xpra_client and generic file downloads/uploads for html5, but the bug in Trac prevents me to do so.

Thanks and regards,

-
_/) Eric Grammatico.


5 décembre 2016 15:45 "Antoine Martin via shifter-users" <shifter-users at lists.devloop.org.uk> a
écrit:
> On 01/12/16 23:05, Eric Grammatico via shifter-users wrote:
> 
>> Hi There,
>> 
>> I am testing xpra-1.0-0.20161125r14490 and my setup is the following:
>> XPRA_SERVER
>> XPRA_PROXY
>> XPRA_HTML5
>> 
>> I try to send a file from the server to the client, I expect the client will open a new windows or
>> propose to download as it does for printing.
>> Unfortunately I have no clue how to achieve that. From the man page I learnt I could have some help
>> from xpra control. Thus I launched from server:
>> $> xpra control :100 help send-file
>> control command 'send-file': sends the file to the client(s)
>> 
>> Ok, so I launched:
>> $> xpra control :100 send-file /etc/bashrc
>> server returned error code 127
>> at least 3 arguments required
>> 'send-file': sends the file to the client(s)
>> 
>> With a bit of investigation I found the first argument is the file path and the third argument is
>> the client.uuid, but no clue about the second argument. So I tried the following (blitz is just to
>> avoid wrong number of arguments error, don't know what it's supposed to do with):
>> $> xpra control :100 send-file /etc/bashrc blitz 9fc059c462eca4f10b2e641f5b9cda38
>> send file of '/etc/bashrc' to 9fc059c462eca4f10b2e641f5b9cda38 initiated
> 
> I have added some documentation on the wiki:
> http://xpra.org/trac/wiki/FileTransfers#Usage
> 
> And I have also improved the command line:
> http://xpra.org/trac/changeset/14497
> So the simpler form will now also be accepted:
> xpra control :100 send-file /path/to/the-file-to-send
> 
>> But nothing happend on client side.
> 
> The client should print something like this:
> downloaded 11013 bytes to temporary file:
> '/home/antoine/Downloads/Xpra07-4.png'
> 
> And if "open-files" is enabled, it should also open the file. That is,
> unless you also set the open flag (now optional) to false on the
> "send-file" xpra control command line.
> 
> If "open-files" is disabled on the client, then the server should print:
> Warning: opening the file after transfer is disabled on the remote end
> 
>> The xpra_server says:
>> 2016-12-01 16:00:09,627 New unix-domain connection received on
>> /var/run/rdisp/.xpra/xappdisp_eric-100
>> 2016-12-01 16:00:56,445 New unix-domain connection received on
>> /var/run/rdisp/.xpra/xappdisp_eric-100
> 
> The server does not print any messages unless the debug flag "-d file"
> is used. You may want to turn that on to figure out why the file is not
> getting sent.
> 
>> and the xpra_proxy says nothing.
> 
> The proxy may or may not print this warning depending on the size of the
> data:
> found a large uncompressed item in packet 'send-file-chunk'...
> This spurious warning in the proxy has now been removed:
> http://xpra.org/trac/changeset/14498
> 
> Here's a simple end-to-end working example with the proxy
> * start a server:
> xpra start --start=xterm :100
> * start an unsecured proxy server:
> xpra proxy --bind-tcp=0.0.0.0: :200 --auth=none
> * optional step: enable "open-files":
> sudo sed -i'' 's/open-files = no/open-files=yes/'
> /etc/xpra/conf.d/15_file_transfers.conf
> * attach a client via the proxy:
> xpra attach tcp:localhost
> * send a file to the server (which will go through the proxy)
> xpra control :100 send-file $HOME/Xpra01.png
> 
> At that point, the image should be in the "Downloads" folder of the
> client, and it will appear in an image viewer if "open-files" is true.
> 
> If you still have problems, you should try to get things working without
> the proxy first, then add the proxy to the mix.
> Make sure you add "-d file" for debugging issues.
> 
>> Please, could you explain how to tranfert files from server to html5 client and vice versa ?
> 
> The HTML5 client only supports file-transfers for printing: only PDF files..
> Adding support for more generic file downloads is planned.
> 
> Cheers
> Antoine
> 
>> Thanks and best regards,
>> 
>> -
>> _/) Eric Grammatico.
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>> shifter-users at lists.devloop.org.uk
>> http://lists.devloop.org.uk/mailman/listinfo/shifter-users
> 
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