connecting to samba fileshare fails if smb1(now deprecated) is not supported by the server

[beadon]

When connecting with Nautilus to "smb://hostname.lan/" note - not the full path to the samba share, and this is a resolvable ".lan" name handled by the local DNS server - then gvfsd fails, and doesn't send a proper error back to nautilus. This display in Nautilus is simply "Folder is empty"

Apr 12 19:31:31 semiauto dbus-daemon[729]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.1635' (uid=1000 pid=381751 comm="/usr/bin/nautilus --gapplication-service" label="unconfined")
Apr 12 19:31:31 semiauto gnome-shell[1916]: meta_window_set_stack_position_no_sync: assertion 'window->stack_position >= 0' failed
Apr 12 19:31:31 semiauto systemd[1]: Starting Hostname Service...
Apr 12 19:31:31 semiauto dbus-daemon[729]: [system] Successfully activated service 'org.freedesktop.hostname1'
Apr 12 19:31:31 semiauto systemd[1]: Started Hostname Service.
Apr 12 19:31:42 semiauto nautilus[381751]: GtkText - did not receive a focus-out event.#012If you handle this event, you must return#012GDK_EVENT_PROPAGATE so the default handler#012gets the event as well
Apr 12 19:31:42 semiauto gvfsd[171389]: smbXcli_negprot_smb1_done: No compatible protocol selected by server.
Apr 12 19:32:01 semiauto systemd[1]: systemd-hostnamed.service: Deactivated successfully.

Since the client forces the server to use NT1 protocols, and the server is configured to NOT permit this, then hte client connection fails - ungracefully.

The solution is a few parts :

1. Negotatiate up to higher levels of encryption during connection time.
2. Gracefully provide a message back to nautilus that there is an error in connecting for X or Y reason (encryption related, specific to connection to this server )

It appears that this has been a known problem now for a few years, here is a reference to it in 2021 (but in Linux Mint):

https://forums.linuxmint.com/viewtopic.php?t=363511

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: gvfs 1.48.2-0ubuntu1
ProcVersionSignature: Ubuntu 5.15.0-67.74-generic 5.15.85
Uname: Linux 5.15.0-67-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu82.3
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Wed Apr 12 19:26:46 2023
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: gvfs
UpgradeStatus: Upgraded to jammy on 2022-11-22 (141 days ago)