I've now implemented the IDENT function over network. And modified my code following advice from Christian. The previous merge request can be replaced by a new one. Before deleting the current merge request I'm interested to know who is involved in instruments implementation ? I could contact him directly if nobody here is involved/interested by this new feature. If nobody here or elsewhere is interested/involved by instruments, I'll will be happy to take care of this (and/or other) for the project.
Looking at comments (here on devel-list, on gitorious comments, on IRC), it seems that this feature is expected by users.