Unable to discover my HP scanner

[pareshprajapati1990]

Hello there,

I'm unable to discover my HP Laserjet MFP M129-M134 scanner using this app which is TWAIN compliant device as per product specification.

Please help me out here.

[mlmcl62]

The TWAIN Direct Bridge (included in the twain-direct project) is required for any scanner that only supports the legacy TWAIN Driver.

[jayesh28589]

Hello @mlmcl62 : We (me, Paresh and my team) import both the demo android and IOS and in IOS it shows all scanner in scanning list, but in android it is not showing, there is no filter in IOS where in android there is filter for scanning list. I added condition in AndroidServiceDiscoverer.java

if (type.equals("twaindirect") || type.equals("printer"))

instead of only if (type.equals("twaindirect")) and it will listed then scanner.

We have HP LaserJet MFP M132snw Printer/Scanner and it is TWAIN supported.

What we done

1. Scanning
2. privet/infoex
   the response from privet/infoex is:

{ "version": "2.0","name": "HP LaserJet MFP M132snw (28C4FE)-6","firmware": "20160908","url": "https://www.google.com/cloudprint","type": ["printer"],"id": "(null)","device_state": "idle","uptime": 163561180,"connection_state": "offline","manufacturer": "HP","model": "HP LaserJet MFP M132snw","serial_number": "VNFTC00298","x-privet-token": "MjVmYzU5YzAtYzFlNC0xZjBjLWFjMjctM2M1MjgyMjhjNGZlOjI2NDY3Ng==:264676","api": ["/privet/register"]}

but after that we call api .../privet/register and pass the params as looking in demo but it always return {"error": "invalid_params"} in POSTMAN.

do you have any idea how can we go further here.

[JakeWoki]

POST

/privet/register
X-Privet-Token: xxxxx
{ "kind": "twainlocalscanner", "commandId": "xxxxxxxxxxxxxx", "method": "createSession" }

it always return {"error": "invalid_params"}

@jayesh28589 Did you have a solution?