osmo_io: Support detecting non-blocking connect()
libosmo-netif does a non blocking connect(), which as per definition of
the socket API is signalled from the OS to the user by marking the file
descriptor writable.
osmo_io needs to signal this somehow. Previously osmo_io would only call
the write_cb if actual data has been sent. This patch changes the behaviour
so that calling osmo_iofd_write_enable() will call write_cb() on a writable
socket even if the write queue is empty.
Change-Id: I893cbc3becd5e125f2f06b3654578aed0aacadf3
diff --git a/tests/osmo_io/osmo_io_test.ok b/tests/osmo_io/osmo_io_test.ok
index 745e36a..43e5464 100644
--- a/tests/osmo_io/osmo_io_test.ok
+++ b/tests/osmo_io/osmo_io_test.ok
@@ -1,5 +1,6 @@
Running test_connected
ep1: write() returned rc=16
+ep2: write() returned rc=0
ep2: read() msg with len=16
01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10
Running test_unconnected