ustream: make notify_state optional as well

diff --git a/ustream.c b/ustream.c
index ed4fbb3..8e6efcd 100644 (file)
--- a/ustream.c
+++ b/ustream.c
@@ -104,7 +104,8 @@ static void ustream_state_change_cb(struct uloop_timeout *t)
 
        if (s->write_error)
                ustream_free_buffers(&s->w);
-       s->notify_state(s);
+       if (s->notify_state)
+               s->notify_state(s);
 }
 
 void ustream_init_defaults(struct ustream *s)

diff --git a/ustream.h b/ustream.h
index 634a3e7..2df429c 100644 (file)
--- a/ustream.h
+++ b/ustream.h
@@ -68,7 +68,7 @@ struct ustream {
        void (*notify_write)(struct ustream *s, int bytes);
 
        /*
-        * notify_state:
+        * notify_state: (optional)
         * called by the ustream implementation to notify that the read
         * side of the stream is closed (eof is set) or there was a write
         * error (write_error is set).