Some printers (e.g. matrix/impact printers) may have a hard time
keeping up with the text output, and may trigger timeout errors
because of this, even though they would otherwise produce a correct
result.
Increasing the default timeout to 5s (from the default 1s) should
take care of most slow printers out there.
Instead of hardcoding the IN & OUT endpoint
addresses for the ESC/POS printers, we now
attempt to auto-detect them.
This should increase compatibility with many
compatible thermal printers that are simply
using a different address, such as the
- STMicroelectronics POS58 Printer USB
- HU HAI SUNCSW Receipt Printer Co.,Ltd. Gprinter USB Printer
Fixes#12890
Although it might be a good idea to make sure a printer device is
properly closed, trying for >1 min to do so is too much. It can cause a
>1 min delay between receiving a receipt and actually printing. Also,
just because the device is not cleanly closed does not mean that it will
not work when we open it again.
Olivier Dony
Joren Van Onder
Martin
TheCloneMaster
Frédéric van der Essen