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Packages: gio-2.0 gio-unix-2.0 posix
D-Bus
Program: client
[DBus (name = "org.example.Test")]
interface Test : Object {
public abstract string test (UnixOutputStream output_stream) throws IOError;
}
void create_streams (out UnixInputStream input, out UnixOutputStream output) throws IOError {
int pipefd[2];
if (Posix.pipe (pipefd) < 0) {
throw new IOError.FAILED ("Pipe creation failed");
}
input = new UnixInputStream (pipefd[0], true);
output = new UnixOutputStream (pipefd[1], true);
}
void main () {
// client
Test test = Bus.get_proxy_sync (BusType.SESSION, "org.example.Test", "/org/example/test");
UnixInputStream i;
UnixOutputStream o;
create_streams (out i, out o);
try {
test.test (o);
// We expect the request to fail
assert_not_reached ();
} catch (Error e) {
}
}
Program: server
[DBus (name = "org.example.Test")]
class Test : Object {
public void test (UnixOutputStream output_stream) throws IOError {
uint8[] buffer = new uint8[1];
buffer[0] = 42;
output_stream.write (buffer);
}
}
MainLoop main_loop;
void client_exit (Pid pid, int status) {
// client finished, terminate server
assert (status == 0);
main_loop.quit ();
}
void main () {
var conn = Bus.get_sync (BusType.SESSION);
conn.register_object ("/org/example/test", new Test ());
// try to register service in session bus
var request_result = conn.call_sync ("org.freedesktop.DBus", "/org/freedesktop/DBus", "org.freedesktop.DBus", "RequestName",
new Variant ("(su)", "org.example.Test", 0x4), null, 0, -1);
assert ((uint) request_result.get_child_value (0) == 1);
// server ready, spawn client
Pid client_pid;
Process.spawn_async (null, { "dbus_filedescriptor_errors_client" }, null, SpawnFlags.DO_NOT_REAP_CHILD, null, out client_pid);
ChildWatch.add (client_pid, client_exit);
main_loop = new MainLoop ();
/* Exhaust fds before the incoming request */
int fd = 0;
while (fd >= 0)
fd = Posix.open ("/", 0);
main_loop.run ();
}
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