Changelog:

• 1.20.2
  • fix regression: do attempt to apply duplicate routes, log INFO instead of WARN
  • minor changes in log messages

• 1.20.1
  • fix version string in configure.ac

• 1.20.0
  • fix incorrect empty HDLC frame detection causing connection drops
  • increase the inbound HTTP buffer capacity
  • fix a few log messages
  • fix innocuous memory leaks when parsing options
  • prepend "SVPNCOOKIE=" to the cookie if missing
  • drop support for openssl < 1.0.2

• 1.19.0
  • fix "Peer refused to agree to our IP address" message
  • avoid setting duplicate routes
  • remove obsolete code that reads non-XML config from FortiOS 4
  • improve warning message when reading options from config file

• 1.18.0
  • add new options to delegate the authentication to external programs
  • minor fixes in documentation

• 1.17.3
  • fix regression: spurious warning message after reading config

• 1.17.2
  • fix memory leak when reading user input
  • improve calls to getsockopt() and associated debug output
  • allow reading config from process substitution
  • work around CodeQL false positives, improving code at the same time
  • change type of systemd.service from simple to notify

Connected to my employer's fortissl-based vpn server successfully.