http2: add ping event

Add a `Http2Session` event whenever a non-ack `PING` is received.

Fixes: https://github.com/nodejs/node/issues/18514

PR-URL: https://github.com/nodejs/node/pull/23009
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/env.h b/src/env.h
index aafb3f6e0c..504bb5db2f 100644
--- a/src/env.h
+++ b/src/env.h
@@ -229,6 +229,7 @@ struct PackageConfig {
   V(onread_string, "onread")                                                  \
   V(onreadstart_string, "onreadstart")                                        \
   V(onreadstop_string, "onreadstop")                                          \
+  V(onping_string, "onping")                                                  \
   V(onsettings_string, "onsettings")                                          \
   V(onshutdown_string, "onshutdown")                                          \
   V(onsignal_string, "onsignal")                                              \