Querying "document-format" (mimeMediaType) / RFC 2911 Section 3.2.5.1 , Page 50

[ifrh]

I have a SAMSUNG SCX 4828FN After I changed inside pyipp/const.py the protocoll version to DEFAULT_PROTO_VERSION = (1, 1) a light modificated example code, based upon https://github.com/ctalkington/python-ipp#usage , gives me.

Printer(info=Info(name='Samsung SCX-4x28 Series', printer_name='Printer Name', printer_uri_supported='http://192.168.0.5:631', uptime=8403, command_set=None, location='Printer Location', manufacturer='Samsung', model='SCX-4x28 Series', printer_info='Info', serial=None, uuid=None, version=None, more_info='MoreInfo'), markers=[], state=State(printer_state='idle', reasons=None, message='Idle. Printer is ready to print.'), uris=[])

Can I use your project code to query the IPP printer for its supported mimeMediaType? https://datatracker.ietf.org/doc/html/rfc2911#section-3.2.5.1

Perhaps I had overseen something obvious?

From the printers SyncThru WebService Page I know the information:

Main Firmware Version : | 1.01.00.36      10-29-2009
Network Firmware Version : | V4.01.18(4x24/26/28) 11-17-2009
Engine Firmware Version : | 1.00.11
PCL5E Firmware Version : | PCL5e 5.92 02-12-2009 |  
PCLXL Firmware Version : | PCL6 5.93  03-21-2009 |  
PS3 Firmware Version : | PS3 1.94.06 12-22-2008 |  
TIFF Firmware Version : | TIFF 0.91.00 10-07-2008

By the way, if I use protocoll version DEFAULT_PROTO_VERSION = (2, 0) than your Code crashes while parsing the printers response.:

Traceback (most recent call last):
  File "/home/rhartm2m/miniconda2/envs/IppSyncThru/lib/python3.9/site-packages/pyipp/ipp.py", line 188, in execute
    parsed = parse_response(response)
  File "/home/rhartm2m/miniconda2/envs/IppSyncThru/lib/python3.9/site-packages/pyipp/parser.py", line 260, in parse
    if isinstance(data[attribute_key], list):
KeyError: ''

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/rhartm2m/IppSyncThru_Check/my_pyipp_example.py", line 20, in <module>
    loop.run_until_complete(main())
  File "/home/rhartm2m/miniconda2/envs/IppSyncThru/lib/python3.9/asyncio/base_events.py", line 647, in run_until_complete
    return future.result()
  File "/home/rhartm2m/IppSyncThru_Check/my_pyipp_example.py", line 14, in main
    printer: Printer = await ipp.printer()
  File "/home/rhartm2m/miniconda2/envs/IppSyncThru/lib/python3.9/site-packages/pyipp/ipp.py", line 216, in printer
    response_data = await self.execute(
  File "/home/rhartm2m/miniconda2/envs/IppSyncThru/lib/python3.9/site-packages/pyipp/ipp.py", line 190, in execute
    raise IPPParseError from exc
pyipp.exceptions.IPPParseError

[ctalkington]

you'd likely want to use the raw method like in:

https://github.com/ctalkington/python-ipp/blob/7c5c57079499cc75d116d5678b6569ea969e273d/examples/debug.py

This is mainly cause currently that attribute isn't mapped to a python dataclass so the printer method would not expose the data even if it didnt fail plus with raw you can dictate ipp version by overriding version property.

[ctalkington]

Actually that would only get you the raw bytes which would need parsed. so execute would handle taking your custom request and getting parsed but not modeled data back.

https://github.com/ctalkington/python-ipp/blob/bf53c3db4a481d3543a7bfff176e112b4a12f33d/examples/execute.py

[ctalkington]

that error would mean there was not attribute set/found/understood when parsing request. I may try to recreate such a case as that does look like a potential problem