Problems connecting to Canon Powershot G9X using PTPIP

Hi,

i am trying to use my Canon Powershot G9 X with gphoto2.
Using USB everything works (using digikam in debian stretch).
Using PTPIP there is no success so far (after reading lots of blog
posts,mailing list posts and so on).

I connected the camera successfully using the original canon software
and captured the initial Handshake using Wireshark/libpcap on a Windows
10 machine.

When filtering the captured packets for ptpip, the first lines i got were:
Init Command Request GUID: 0000000000000000ffff821934822fef Name: AEBOOK
Init Command Ack Connection #:23213 GUID:
372671113c97074fb908945be4dfa273 Name: Canon PowerShot G9 X

So i put the line
ptp2_ip=guid=00:00:00:00:00:00:00:00:ff:ff:82:19:34:82:2f:ef
in ~/.gphoto2/settings.

Being still not successful i used
env LANG=C gphoto2 --debug --debug-logfile=my-logfile.txt --port
ptpip:192.168.10.211 --camera "PTP/IP Camera" -L
to get a logfile. Here is the relevant (imho) part:

0.092198 gp_camera_folder_list_files (2): Listing files in '/'...
0.092231 gp_camera_init              (2): Initializing camera...
0.092265 gp_camera_init              (2): Loading
'/usr/lib/x86_64-linux-gnu/libgphoto2/2.5.12/ptp2'...
0.094304 gp_port_open                (2): Opening  port...
0.094496 ptp_ptpip_connect           (2): connecting to
ptpip:192.168.10.211.
0.099013 ptp_ptpip_init_command_request(3): ptpip/init_cmd data:
(hexdump of 42 bytes)
0000  2a 00 00 00 01 00 00 00-00 00 00 00 00 00 00 00  *...............
0010  ff ff 82 19 34 82 2f ef-41 00 45 00 42 00 4f 00  ....4./.A.E.B.O.
0020  4f 00 4b 00 00 00 00 00-01 00                    O.K.......

0.099136 ptp_ptpip_init_command_request [ptpip.c:473](0): return 42 / len 42
0.101962 ptp_ptpip_generic_read      (3): ptpip/generic_read header:
(hexdump of 8 bytes)
0000  0c 00 00 00 05 00 00 00-                         ........

0.101994 ptp_ptpip_generic_read      (3): ptpip/generic_read data:
(hexdump of 4 bytes)
0000  01 00 00 00            -                         ....

0.102004 ptp_ptpip_init_command_ack [ptpip.c:498](0): bad type returned 5
0.102056 camera_init [library.c:7678](0): Failed to connect.
0.102065 gp_port_close               (2): Closing port...
0.102423 gp_context_error            (0): An error occurred in the
io-library ('Unspecified error'): No error description available
0.103179 gp_camera_free              (2): Freeing camera...
0.103199 gp_port_free                (2): Freeing port...
0.103206 gp_port_close               (2): Closing port...
0.103251 gp_filesystem_reset         (2): resetting filesystem
0.103259 gp_filesystem_lru_clear     (2): Clearing fscache LRU list...
0.103265 gp_filesystem_lru_clear     (2): fscache LRU list already empty
0.103271 delete_all_folders          (2): Internally deleting all
folders from '/'...
0.103277 lookup_folder               (2): Lookup folder '/'...
0.103284 lookup_folder               (2): Found! / is 0x5556a2498420
0.103290 recurse_delete_folder       (2): Recurse delete folder
0x5556a2498420//

The error "bad type returned 5" is still the same as in my first tests
without any capturing/messing with GUIDs, etc.
As im not really understanding whats going on here i even tried to use
both GUIDs from the Capture - in desperation i even patched libgphoto2
to hardcode the hostname to AEBOOK (which is the name of the Windows
machine i used for testing) just in case :-).

Still no luck.

Has anybody succesfully connected a G9X (or another newer Canon Camera)
using PTPIP and libgphoto2 or are some of the above steps terribly wrong?

Thanks and bye..
Michael Schaffner

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