Print WARNING if we fall below "min" connections

We want to close idle sessions, sessions with max lifetime
or max uses.  BUT we want to enforce "min".  The code will
currently close a connection, notice "num < min", and spawn
a new one.  We warn the user that this is happening, so that
they can fix their configuration.

diff --git a/src/main/connection.c b/src/main/connection.c
index 458bb34d819b476e8b89d754cae868b037820991..af51d51426cccb69bd8625f5b092d54335aeadb2 100644 (file)
--- a/src/main/connection.c
+++ b/src/main/connection.c
@@ -364,6 +364,11 @@ static int fr_connection_manage(fr_connection_pool_t *fc,
                DEBUG("%s: Closing expired connection (%i): Hit max_uses limit",
                        fc->log_prefix, this->number);
        do_delete:
+               if ((fc->num <= fc->min) &&
+                   (fc->last_complained < now)) {
+                       radlog(L_INFO, "WARNING in %s: You probably need to lower \"min\"", fc->log_prefix);
+                       fc->last_complained = now;
+               }
                fr_connection_close(fc, this);
                return 0;
        }