Hi Fons and Gerri, I found another instance of a hard-coded check on "root://" in TSystem::FindHelper(...), namely: // create new helper TRegexp re("^root.*:"); // also roots, rootk, etc TString pname = path; if (pname.Index(re) != kNPOS) { // rootd daemon ... helper = new TNetSystem(path); } else if (!strcmp(url.GetProtocol(), "http") && pname.BeginsWith("http")) { // http ... } else if ((h = gROOT->GetPluginManager()->FindHandler("TSystem", path))) { if (h->LoadPlugin() == -1) return 0; helper = (TSystem*) h->ExecPlugin(0); } This should probably be changed to use the PluginManager to find TNetSystem. It looks like most (all?) of the functionality is there in the XrdClientAdmin so presumably a "TXNetSystem" can be made. Fabrizio, what do you think? Presumably this can be done as part of the merge of TXNetFile with the posix client. Do you know of any backwards compatibility issues which will make it difficult for a TXNetSystem to be backwards compatible with rootd (using TNetSystem)? Pete ------------------------------------------------------------------------- Peter Elmer E-mail: [log in to unmask] Phone: +41 (22) 767-4644 Address: CERN Division PPE, Bat. 32 2C-14, CH-1211 Geneva 23, Switzerland -------------------------------------------------------------------------