MINOR: mux-h2/traces: add a missing trace on connection WU with negative inc

The test was performed but no trace emitted, which can complicate certain
diagnostics, so let's just add the trace for this rare case. It may safely
be backported though this is really not important.

diff --git a/src/mux_h2.c b/src/mux_h2.c
index cd88c887486ab18250d4bd24f2a40bea061bc16e..2d334b152240d75125596a5ad43aac553f64de0f 100644 (file)
--- a/src/mux_h2.c
+++ b/src/mux_h2.c
@@ -2604,6 +2604,7 @@ static int h2c_handle_window_update(struct h2c *h2c, struct h2s *h2s)
                }
 
                if (h2c->mws >= 0 && h2c->mws + inc < 0) {
+                       TRACE_ERROR("conn WINDOW_UPDATE inc<0", H2_EV_RX_FRAME|H2_EV_RX_WU, h2c->conn);
                        error = H2_ERR_FLOW_CONTROL_ERROR;
                        goto conn_err;
                }