set default value for --exec-args argument

debian/changelog

@@ -1,3 +1,9 @@
+plexus (3.1-2+deb12u3) unstable; urgency=low
+
+  * - Set default value to --exec-args argument.
+
+ -- Novemus Band <nineletters@mail.ru>  Thu, 8 Aug 2024 00:07:00 +0300
+
 plexus (3.1-1+deb12u3) unstable; urgency=low
 
   * - The ability to use DHT as the rendezvous.

main.cpp

@@ -74,7 +74,7 @@ int main(int argc, char** argv)
         ("email-ca", boost::program_options::value<std::string>()->default_value(""), "path to the email Certification Authority")
         ("punch-hops", boost::program_options::value<uint16_t>()->default_value(7), "time-to-live parameter for the punch packet")
         ("exec-command", boost::program_options::value<std::string>()->required(), "command executed after punching the NAT")
-        ("exec-args", boost::program_options::value<std::string>()->default_value(""), "arguments for the command executed after punching the NAT, allowed wildcards: %innerip%, %innerport%, %outerip%, %outerport%, %peerip%, %peerport%, %secret%, %hostpin%, %peerpin%, %hostemail%, %peeremail%")
+        ("exec-args", boost::program_options::value<std::string>()->default_value("%innerip% %innerport% %outerip% %outerport% %peerip% %peerport%"), "arguments for the command executed after punching the NAT, allowed wildcards: %innerip%, %innerport%, %outerip%, %outerport%, %peerip%, %peerport%, %secret%, %hostpin%, %peerpin%, %hostemail%, %peeremail%")
         ("exec-pwd", boost::program_options::value<std::string>()->default_value(""), "working directory for executable, the above wildcards are allowed")
         ("exec-log", boost::program_options::value<std::string>()->default_value(""), "exec log file, the above wildcards are allowed")
         ("log-level", boost::program_options::value<wormhole::log::severity>()->default_value(wormhole::log::info), "log level: <fatal|error|warning|info|debug|trace>")