it's used only to parse the -p flag. While there add check_port_num to check the range for the port.

Initialize the logger as soon as possible and log by default to stderr. With this, some (common?) errors are printed early instead of ending up in syslog. # NB: this is in configless mode % ./gmid -p 80 [2021-07-07 11:05:57] bind: Address already in use % ./gmid -p 81 [2021-07-07 11:13:53] bind: Permission denied %

we need to delete the events associated with the backends, otherwise the server process won't ever quit. Here, we add a pending counter to every backend and shut down immediately if they aren't handling any client; otherwise we try to close them as soon as possible (i.e. when they close the connection to the last connected client.)

otherwise path, port and/or prog could become an invalid pointer.

GMID_VERSION follows the CGI/FastCGI style, i.e. project_name/version. Define GMID_STRING with a more "human" variant "project_name version", and reuse that in the --help and --version codepath.

the logger process now can receive a file descriptor to write logs to. At the moment the logic is simple, if it receives a file it logs there, otherwise it logs to syslog. This will allow to log on custom log files.

it's not technically required, since a couple of lines below we free whole host struct, and we don't have code that may use h->{env,aliases} afterwards, but it's nice not to have invalid pointers around. it may bite in the future.

Not production-ready yet, but it's a start. This adds a third ``backend'' for gmid: until now there it served local files or CGI scripts, now FastCGI applications too. FastCGI is meant to be an improvement over CGI: instead of exec'ing a script for every request, it allows to open a single connection to an ``application'' and send the requests/receive the responses over that socket using a simple binary protocol. At the moment gmid supports three different methods of opening a fastcgi connection: - local unix sockets, with: fastcgi "/path/to/sock" - network sockets, with: fastcgi tcp "host" [port] port defaults to 9000 and can be either a string or a number - subprocess, with: fastcgi spawn "/path/to/program" the fastcgi protocol is done over the executed program stdin of these, the last is only for testing and may be removed in the future. P.S.: the fastcgi rule is per-location of course :)