404 Error when printing test label ? about virtual-zpl-printer

[porrey]

The latest release forces US English when formatting the label sizes for the Labelary API.

[StefanZ09]

Hello everyone - I have the same problem. It doesnt matter which printer configuration, which label sizes or resolutions I try, and it also doesnt matter which test label I use, I always get the 'Labelary Error - ERROR: HTTP 404 Not Found' error. I also tested to send ZPL code from the ERP system (D365 SCM) to the virtual ZPL printer, but with the same error message. I use the version 2.3.0. Any help is very welcome!

[porrey]

Earlier versions had bugs that caused invalid URL's to be formed resulting in 404 errors. Please use the latest version to rule out bugs as the source of the issue.

I uploaded version 3.0.2 that contains a new menu option to test Labelary connectivity.

[StefanZ09]

Hi Daniel! Thanks a lot for your reply. I talked to my IT-department and ask for help. So they updated the Version of the Virtual ZPL-Printer to Version 3.0.2. They also updated the .net as you described on github. Then I restarted my computer and tried it again, but with the same 404 error message (with test from the ERP system to the printer). Then I tried to use the 'Test label' function within the Virtual ZPL printer but without success. I always get the 'HTTP 404 Not found' error, no matter which 'Test Label' settings I use (4x6 USPS, 2x2 Product label, 4x6 Shipping label). Can you give me another tip what I can do to solve that problem?

[porrey]

Try these:

1. Click the Connection menu option and select Test Labelary. Post the screenshot of those results here.
2. Open a browser and enter the URL http://api.labelary.com/v1/printers. You should get a 405 error with the following result: ERROR: HTTP 405 Method Not Allowed.

[Simon-Syd]

hello Daniel,
with 3.0.2 it's still KO (404 error when testing)
but the weird thing its that "test labelary" looks fine :

another weird thing, when I compare the "test labelary" output from my computer (which is OK) and the other computer, it's the same informations but not in the same order ?

just a little text to change here (it's edit instead of test) :

thanks for your help

[Simon-Syd]

we had to remove this file after uninstalling the software :

not it's fine !

[CMIGIT]

It seems to be with and height in the url to labelary, because in some PC, the decimal separator is "," (coma) and not a point "."

[CMIGIT]

In :
Virtual-ZPL-Printer\Src\Virtual Printer Solution\Labelary.Service\LabelService.cs

After (line 110)

						if (width <= 15 && height <= 15)
						{
							string url = $"{this.LabelServiceConfiguration.BaseUrl}/{labelConfiguration.Dpmm}dpmm/labels/{width:#.##}x{height:#.##}/{labelIndex}/";
							url = url.Replace(",", "."); // Add this : Violent but normally no comma in url so complete replacement

[porrey]

Is your system locale set to use a comma for decimal separator?

[CMIGIT]

Yes

[CMIGIT]

I'm already have th issue.
Here is a possible correction, with your code

						```

CultureInfo v_CultureInfo = CultureInfo.InstalledUICulture;
NumberFormatInfo v_NumberFormatInfoPoint = (NumberFormatInfo)v_CultureInfo.NumberFormat.Clone();
v_NumberFormatInfoPoint.NumberDecimalSeparator = ".";

						string widthString = width.ToString("#.##", v_NumberFormatInfoPoint);
						this.Logger.LogDebug("The Width parameter is '{value}'.", widthString);
						string heightString = height.ToString("#.##", v_NumberFormatInfoPoint);
						this.Logger.LogDebug("The Height parameter is '{value}'.", heightString);

[porrey]

Please describe the issue with more detail. Do you have logs? What are your current culture settings?

[CMIGIT]

I still have the same issue.
height and width always have commas when transforming to string.
I propose this code to correct, to force decimal separator.
Note that you can set "v_NumberFormatInfoPoint" in static and compute only once.

[porrey]

I need to be able to reproduce the issue to correct it properly. I have no way of ensuring the code change corrects the issue . Please provide enough details to reproduce the issue.

[CMIGIT]

This is my config for en-US

[porrey]

One of the tests I ran was to change my configuration for us-EN the same as above and I get proper operation. Can you provide more information such as what other language are you running, which one is primary? Also, is the log generating? Can you attach the log file?

[CMIGIT]

May be you can reproduce the issue if you change your regional settings to set comma in decimal separator and space for thousand separator.
Then you configure the printer with paper in centimeters, and setsize to 10cm x 15cm.
You should see, that height and width after convert in string have comma and not point ;-)

[porrey]

That is the test I ran before publishing. I also ran it again after your post and it passed. I am still unable to reproduce.

[ASTIN-UA]

Good afternoon. I have the same problem. I set the size in millimeters. 25х40. The label is not displayed, moreover, the program crashes. The localization is Ukrainian. If you convert the entered millimeters to inches, you get the following:

And, accordingly, the print does not go. The output image is of the following type:

If you convert the settings to inches and align to an integer, it starts working.
OS: win 11
locale: Ukrainian
If you need some logs, say me whare can i find it.

P.S.: I have find it!
Virtual-ZPL-Printer-Log202402161216.txt

In addition, the program crashes after an unsuccessful attempt to print a label.

[ASTIN-UA]

THK! in 3.2.0 no more this problem! But crush...

[CMIGIT]

It's ok with 3.2.1