Yes, that's correct. This represents a timeout error. We'll check this out, and try to add a text description if it already isn't interpreted correctly by our component.
Ok, and I'm interested in abort while upload/download for unstable servers. For some reasons I use 0(zero) timeout always ( except connect ). Transfer can do nothing long time and even abort doesn't help.
Is this can be fixed or one way to setup timeout non-zero value?
What exactly do you mean by Transfer can do nothing long time and even abort doesn't help. ?
You receive timeout on transfer? This shouldn't happen. However, you should set timeout property tp some value (i.e: 15s). Also, are you sure that the transfer is actually occuring? Does Progress Event trigger?