When calling g_socket_listener_accept_socket_async() on a
GSocketListener with multiple sockets, the accept_ready() callback is
called for the first incoming connection on each socket. It will return
success/failure for the entire accept_socket_async() GTask, and then
free the GSources for listening for incoming connections on the other
sockets in the GSocketListener. The GSources are freed when the GTask is
finalised.
However, if incoming connections arrive for multiple sockets within the
same GMainContext iteration, accept_ready() will be called multiple
times, and will call g_task_return_*() multiple times, before the GTask
is finalised. Calling g_task_return_*() multiple times is not allowed.
Propagate the first success/failure, as before, but then ignore all
subsequent incoming connections until the GTask is finalised.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
GSocketListener can keep internal references to itself for pending
accept() calls, which mean that it can stay alive (and keep listening
on ports) even after a user drops their last reference to it. They need
to call g_socket_listener_close() explicitly to avoid that.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
https://bugzilla.gnome.org/show_bug.cgi?id=794207
There are a few places where commit 18a33f72 replaced valid (nullable)
(optional) annotations with just (optional). That has a different
meaning.
(nullable) (optional) can only be applied to gpointer* parameters, and
means that both the gpointer* and returned gpointer can be NULL. i.e.
The caller can pass in NULL to ignore the return value; and the returned
value can be NULL.
(optional) can be applied to anything* parameters, and means that the
anything* can be NULL. i.e. The caller can pass in NULL to ignore the
return value. The return value cannot be NULL.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
If we have an input parameter (or return value) we need to use (nullable).
However, if it is an (inout) or (out) parameter, (optional) is sufficient.
It looks like (nullable) could be used for everything according to the
Annotation documentation, but (optional) is more specific.
This allows the caller to know when a socket has been bound so that
it can for instance set the SO_SENDBUF and SO_RECVBUF socket options
before listen is called
https://bugzilla.gnome.org/show_bug.cgi?id=738207
Instead of closing the sockets explicitly, let them close themselves
when their final reference is dropped. This makes use of
g_socket_listener_add_socket() more natural.
https://bugzilla.gnome.org/show_bug.cgi?id=732107
As it turns out, we have examples of internal functions called
type_name_get_private() in the wild (especially among older libraries),
so we need to use a name for the per-instance private data getter
function that hopefully won't conflict with anything.
GFile allows for the possibility that external implementations may not
support thread-default contexts yet, via
g_file_supports_thread_contexts(). GVolumeMonitor is not yet
thread-default-context aware.
Add a test program to verify that basic gio async ops work correctly
in non-default contexts.
http://bugzilla.gnome.org/show_bug.cgi?id=579984
Currently, to implement cancellability correctly, all synchronous
calls to GSocket must be preceded by a g_socket_condition_wait() call,
(even though GSocket does this internally as well) and all
asynchronous calls must do occasional manual
g_cancellable_is_cancelled() checks. Since it's trivial to do these
checks inside GSocket instead, and we don't particularly want to
encourage people to use the APIs non-cancellably, move the
cancellation support into GSocket and simplify the existing callers.
http://bugzilla.gnome.org/show_bug.cgi?id=586797
Change the logic in g_socket_listener_add_inet_port() as per the
reasoning in the bug report.
- If the OS supports neither IPv6 or IPv4, fail.
- If the OS supports only IPv6, do that.
- If the OS supports only IPv4, do that.
- If the OS supports IPv6 and IPv6 "speaks" IPv4 then bind it
and be done.
- If the OS supports IPv6 and IPv6 doesn't "speak" IPv4 then
create an additional socket for IPv4.
- If binding any socket fails then fail the entire call.
Also, remove the ability to call this function with port == 0. This
is a useless thing to do anyway since you have no way to know what
port number was actually allocated. We should have a separate
function to deal with this.
The whole protocol name thing is pretty weird. The getprotobyname functions
seem to only specify one mapping for name <-> ids, so all families/types
must use the same values. Plus the values used for the protocols are
standardized by IANA, so are always the same.
So, we drop using names for protocols, intead introducing an enum with
a few commonly availible and used protocols.
