Scanning fails "bad request"

[PhatPhantom]

`python /var/www/html/scan.py scans/Scan20190511072948.jpg 300
Found scanner 'HP LaserJet MFP M130nw (Bonjour)._uscan._tcp.local.' at 'NPIA9BA52.local.'
Scanner information:

<scan:ScannerCapabilities xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:scan="http://schemas.hp.com/imaging/escl/2011/05/03" xmlns:pwg="http://www.pwg.org/schemas/2010/12/sm" xsi:schemaLocation="http://schemas.hp.com/imaging/escl/2011/05/03 eSCL.xsd">
pwg:Version2.5</pwg:Version>
pwg:MakeAndModelHP LaserJet MFP M130nw</pwg:MakeAndModel>
pwg:SerialNumberVNB4D07779</pwg:SerialNumber>
scan:Platen
scan:PlatenInputCaps
scan:MinWidth576</scan:MinWidth>
scan:MaxWidth2550</scan:MaxWidth>
scan:MinHeight576</scan:MinHeight>
scan:MaxHeight3508</scan:MaxHeight>
scan:MaxScanRegions1</scan:MaxScanRegions>
scan:SettingProfiles
scan:SettingProfile
scan:ColorModes
scan:ColorModeRGB24</scan:ColorMode>
scan:ColorModeGrayscale8</scan:ColorMode>
</scan:ColorModes>
scan:ContentTypes
pwg:ContentTypePhoto</pwg:ContentType>
pwg:ContentTypeText</pwg:ContentType>
pwg:ContentTypeTextAndPhoto</pwg:ContentType>
</scan:ContentTypes>
scan:DocumentFormats
pwg:DocumentFormatimage/jpeg</pwg:DocumentFormat>
pwg:DocumentFormatapplication/pdf</pwg:DocumentFormat>
scan:DocumentFormatExtimage/jpeg</scan:DocumentFormatExt>
scan:DocumentFormatExtapplication/pdf</scan:DocumentFormatExt>
</scan:DocumentFormats>
scan:SupportedResolutions
scan:DiscreteResolutions
scan:DiscreteResolution
scan:XResolution75</scan:XResolution>
scan:YResolution75</scan:YResolution>
</scan:DiscreteResolution>
scan:DiscreteResolution
scan:XResolution200</scan:XResolution>
scan:YResolution200</scan:YResolution>
</scan:DiscreteResolution>
scan:DiscreteResolution
scan:XResolution300</scan:XResolution>
scan:YResolution300</scan:YResolution>
</scan:DiscreteResolution>
scan:DiscreteResolution
scan:XResolution600</scan:XResolution>
scan:YResolution600</scan:YResolution>
</scan:DiscreteResolution>
scan:DiscreteResolution
scan:XResolution1200</scan:XResolution>
scan:YResolution1200</scan:YResolution>
</scan:DiscreteResolution>
</scan:DiscreteResolutions>
</scan:SupportedResolutions>
scan:ColorSpaces
scan:ColorSpacesRGB</scan:ColorSpace>
</scan:ColorSpaces>
</scan:SettingProfile>
</scan:SettingProfiles>
scan:SupportedIntents
scan:IntentDocument</scan:Intent>
scan:IntentPhoto</scan:Intent>
scan:IntentPreview</scan:Intent>
scan:IntentTextAndGraphic</scan:Intent>
</scan:SupportedIntents>
scan:MaxOpticalXResolution1200</scan:MaxOpticalXResolution>
scan:MaxOpticalYResolution1200</scan:MaxOpticalYResolution>
</scan:PlatenInputCaps>
</scan:Platen>
scan:ContrastSupport
scan:Min-127</scan:Min>
scan:Max127</scan:Max>
scan:Normal0</scan:Normal>
scan:Step1</scan:Step>
</scan:ContrastSupport>
</scan:ScannerCapabilities>

Our scan request:

<scan:ScanSettings xmlns:pwg="http://www.pwg.org/schemas/2010/12/sm" xmlns:scan="http://schemas.hp.com/imaging/escl/2011/05/03">
pwg:Version2.6</pwg:Version>
pwg:ScanRegions
pwg:ScanRegion
pwg:XOffset0</pwg:XOffset>
pwg:YOffset0</pwg:YOffset>
pwg:Width2550</pwg:Width>
pwg:Height3508</pwg:Height>
pwg:ContentRegionUnitsescl:ThreeHundredthsOfInches</pwg:ContentRegionUnits>
</pwg:ScanRegion>
</pwg:ScanRegions>
scan:InputSourcePlaten</scan:InputSource>
scan:ColorModeRGB24</scan:ColorMode>
scan:XResolution300</scan:XResolution>
scan:YResolution300</scan:YResolution>
</scan:ScanSettings>

400

Cache-Control: no-cache, no-store, must-revalidate
Server: gSOAP/2.7
Content-Length: 0
Connection: close

Bad Request
`

[kno10]

As documented this is only a proof of concept.
For your individual scanner, you may need to customize the request, to include all parameters that the scanner expects to see. For example, I do not see the content units in your scanners capabilities.

[PhatPhantom]

well, I have nothing to compare to here . Can you tell me what XML is submitted to what URL to get those capabilities?

I found this URL http://scannerip/eSCL/ScannerCapabilities but do not know what xml to sumbit . This may make it easier so I can take a peek at what some other eSCL scanners return.

[kno10]

The XML you copy&pasted above is the information you need to work with.
Try adding scan parameters from that list, and removing parameters that are not in that list.
I don't know of any documentation for eSCL scanning, sorry.

[kno10]

And when you find a working combination, please share what you found.