failed to generate challenge response: strings must be equal length

[sbradnick]

After changes between 0aa7703 and ed0b9fc I can't successfully connect to an xpra session via https. I'm prompted for the user password, but then dropped back to a login screen which shows the following message:

You were disconnected for the following reason:

failed to generate challenge response: strings must be equal length

Reinstalling [an rpm based off] 0aa7703 makes it work again.

Using openSUSE-Tumbleweed on both client/server and my startup command is:

xpra start --start=xterm \
  --bind-tcp=<my_ip>:10000 \
  --tcp-auth=sys \
  --ssl-cert=/etc/xpra/ssl-cert.pem \
  --ssl-key=/etc/xpra/ssl-cert.key \
  --ssl=on