Now anyone can schedule events and get a callback to work as long
as the user data structure that is added for the event begins
with a kore_event data structure.
All event state is now kept in that kore_event structure and renamed
CONN_[READ|WRITE]_POSSIBLE to KORE_EVENT_[READ|WRITE].
This commit introduces the ability for the keymgr process
to reload the certificates/keys for domains when receiving
a SIGUSR1 signal.
The keymgr receives 2 new configuration options:
- keymgr_root_path
The root path where the keymgr will live.
If -n is not specified when the application starts the
keymgr process will chroot into here.
- keymgr_runas_user
The user the keymgr will drop privileges towards if
-r was not specified.
All certfile and certkey configuration options are now relative to the
keymgr_root_path configuration setting.
The keymgr process will now also load the certificate for the domain
(rather then the workers) and submit these to the worker processes so
they can be reloaded when required.
Worker processes will refuse connections until the TLS configuration
for a given domain is completed (aka: the workers receive the certificate
for that domain).
Other changes:
- client_certificates renamed to client_verify.
- the chroot configuration option is now called root.
- kore is a little more verbose if privsep options are missing.
- filemaps are now relative to the root configuration option.
The HTTP layer used to make a copy of each incoming header and its
value for a request. Stop doing that and make HTTP headers zero-copy
all across the board.
This change comes with some api function changes, notably the
http_request_header() function which now takes a const char ** rather
than a char ** out pointer.
This commit also constifies several members of http_request, beware.
Additional rework how the worker processes deal with the accept lock.
Before:
if a worker held the accept lock and it accepted a new connection
it would release the lock for others and back off for 500ms before
attempting to grab the lock again.
This approach worked but under high load this starts becoming obvious.
Now:
- workers not holding the accept lock and not having any connections
will wait less long before returning from kore_platform_event_wait().
- workers not holding the accept lock will no longer blindly wait
an arbitrary amount in kore_platform_event_wait() but will look
at how long until the next lock grab is and base their timeout
on that.
- if a worker its next_lock timeout is up and failed to grab the
lock it will try again in half the time again.
- the worker process holding the lock will when releasing the lock
double check if it still has space for newer connections, if it does
it will keep the lock until it is full. This prevents the lock from
bouncing between several non busy worker processes all the time.
Additional fixes:
- Reduce the number of times we check the timeout list, only do it twice
per second rather then every event tick.
- Fix solo worker count for TLS (we actually hold two processes, not one).
- Make sure we don't accidentally miscalculate the idle time causing new
connections under heavy load to instantly drop.
- Swap from gettimeofday() to clock_gettime() now that MacOS caught up.
Before params get would mean querystring and anything else
would just count toward a www-encoded body.
Now you can prefix the params block with "qs" indicating that
those configured parameters are allowed to occur in the query
string regardless of the method used.
This means you can do something like:
params qs:post /uri {
...
}
to specify what the allowed parameters are in the querystring for
a POST request towards /uri.
inspired by and properly fixes#205.
When the pgsql layer was introduced it was tightly coupled with the
http layer in order to make async work fluently.
The time has come to split these up and follow the same method we
used for tasks, allowing either http requests to be tied to a pgsql
data structure or a simple callback function.
This also reworks the internal queueing of pgsql requests until
connections to the db are available again.
The following API functions were changes:
- kore_pgsql_query_init() -> kore_pgsql_setup()
no longer takes an http_request parameter.
- NEW kore_pgsql_init()
must be called before operating on an kore_pgsql structure.
- NEW kore_pgsql_bind_request()
binds an http_request to a kore_pgsql data structure.
- NEW kore_pgsql_bind_callback()
binds a callback to a kore_pgsql data structure.
With all of this you can now build kore with PGSQL=1 NOHTTP=1.
The pgsql/ example has been updated to reflect these changes and
new features.
The only reason you would want to directly modify the cookie
after creating it should be to unset the HTTPONLY or SECURE flags
if that is what you *really* want to do.
Change http_response_cookie() to take all required parameters instead
of having to marshall those in yourself after.
Now you set a sane default cookie in one shot:
http_response_cookie(req, "key", "value", "/", 0, -1, NULL);
Which would create a session cookie key=value for / under the current domain.
We now default to httponly & secure for newly created cookies.
This should've been the default all along.
The http_response_cookie() no longer returns a pointer to http_cookie
but rather takes it as a parameter and will populate the pointer with
the newly created http_cookie if not NULL.
Additionally http_response_cookie() automatically sets the domain
based on the http_request passed into the function.
