Add an API to return an unused port to the portserver

1 files changed, 6 insertions, 0 deletions

diff --git a/test/core/util/port.h b/test/core/util/port.h
index 93788bcab2..4b70fdc978 100644
--- a/test/core/util/port.h
+++ b/test/core/util/port.h
@@ -45,6 +45,12 @@ int grpc_pick_unused_port();
    on failure. */
 int grpc_pick_unused_port_or_die();
 
+/* Return a port which was previously returned by grpc_pick_unused_port().
+ * Implementations of grpc_pick_unused_port() backed by a portserver may limit
+ * the total number of ports available; this lets a binary return its allocated
+ * ports back to the server if it is going to allocate a large number. */
+void grpc_recycle_unused_port();
+
 #ifdef __cplusplus
 }
 #endif