27 Mar
2019
27 Mar
'19
8:50 p.m.
On Wed, Mar 27, 2019 at 4:32 PM Stefan Baur <X2Go-ML-1@baur-itcs.de> wrote:
Am 27.03.19 um 16:30 schrieb Ulrich Sibiller:
You did notice that he said he's trying to mirror a physical display, right? Was clipboard sharing ever supported there? I don't think so ... Sorry, I missed that. Well, I don't know if it is supported there. Must check.
How would you even keep 4 clipboards (User's client, actual X2Go session, support person's client, shadow X2Go Session) in sync? Sounds like a nightmare to begin with.
Well, in principle it is simple. I reality it's not. The problems are manyfold: them somehow which - in the past - proved to go wrong sometimes.
- there are several types of clipboard (PRIMARY, CLIPBOARD, CutBuffers). Not all platforms support all types. So you have to sync
- there are differences in the type of clipboard content that can be handled on different platforms
- we have not yet included the INCR message type yet so the maximum clipboard size is currently limited
- clipboard managers offten disturb the communication at some point. Some platforms and frameworks include clipboard managers that cannot be disabled
- bugs in X servers do not help
- debugging is difficult/complicated as always multiple windows/clipboard owners are involved
- there's also a multi-stage protocol between nxagent and nxproxy for clipboard transfer
- understanding the existing clipboard code is complicated.
Anyone is invited to help here!
Uli