inspector: log response and requests in the inspector for debugging

Logs the raw messages from the inspector when NODE_DEBUG_NATIVE
is set to inspector_server to facilitate debugging.

PR-URL: https://github.com/nodejs/node/pull/46941
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/inspector_agent.cc b/src/inspector_agent.cc
index 02842c7e5e..bb60e47e9d 100644
--- a/src/inspector_agent.cc
+++ b/src/inspector_agent.cc
@@ -248,6 +248,9 @@ class ChannelImpl final : public v8_inspector::V8Inspector::Channel,
 
   void dispatchProtocolMessage(const StringView& message) {
     std::string raw_message = protocol::StringUtil::StringViewToUtf8(message);
+    per_process::Debug(DebugCategory::INSPECTOR_SERVER,
+                       "[inspector received] %s\n",
+                       raw_message);
     std::unique_ptr<protocol::DictionaryValue> value =
         protocol::DictionaryValue::cast(protocol::StringUtil::parseMessage(
             raw_message, false));
@@ -296,6 +299,13 @@ class ChannelImpl final : public v8_inspector::V8Inspector::Channel,
   void flushProtocolNotifications() override { }
 
   void sendMessageToFrontend(const StringView& message) {
+    if (per_process::enabled_debug_list.enabled(
+            DebugCategory::INSPECTOR_SERVER)) {
+      std::string raw_message = protocol::StringUtil::StringViewToUtf8(message);
+      per_process::Debug(DebugCategory::INSPECTOR_SERVER,
+                         "[inspector send] %s\n",
+                         raw_message);
+    }
     delegate_->SendMessageToFrontend(message);
   }