Add mud_can_push()

mud.c

@@ -716,6 +716,11 @@ int mud_can_pull (struct mud *mud)
     return (mud->rx.start != MUD_PACKET_NEXT(mud->rx.end));
 }
 
+int mud_can_push (struct mud *mud)
+{
+    return (mud->tx.start != mud->tx.end);
+}
+
 int mud_is_up (struct mud *mud)
 {
     struct path *path;

mud.h

@@ -17,6 +17,7 @@ int mud_bind (struct mud *, const char *);
 int mud_peer (struct mud *, const char *, const char *);
 
 int mud_can_pull (struct mud *);
+int mud_can_push (struct mud *);
 int mud_is_up    (struct mud *);
 
 int mud_pull (struct mud *);