From adc5f3cb7819a672c37a73f0c4cd850df536e9da Mon Sep 17 00:00:00 2001
From: Maxim Nikolenko <maximnproductengine@lindenlab.com>
Date: Fri, 24 Jul 2026 14:33:11 +0300
Subject: #5796 Add CEF remote debugging port debug setting

Increment CEF remote debugging port for each new media plugin instance
CEFRemoteDebuggingPort should not persist between sessions
---
 indra/llplugin/llpluginclassmedia.cpp  | 34 ++++++++++++++++++++++++++++++++++
 indra/llplugin/llpluginclassmedia.h    |  7 +++++++
 indra/llplugin/llpluginprocessparent.h |  2 ++
 3 files changed, 43 insertions(+)

(limited to 'indra/llplugin')

diff --git a/indra/llplugin/llpluginclassmedia.cpp b/indra/llplugin/llpluginclassmedia.cpp
index 9a1f408b34..da5fe08b13 100644
--- a/indra/llplugin/llpluginclassmedia.cpp
+++ b/indra/llplugin/llpluginclassmedia.cpp
@@ -41,6 +41,8 @@ extern bool gHiDPISupport;
 #endif
 
 static int LOW_PRIORITY_TEXTURE_SIZE_DEFAULT = 256;
+static const U32 MIN_DEBUG_PORT = 1024;
+static const U32 MAX_DEBUG_PORT = 65535;
 
 static int nextPowerOf2( int value )
 {
@@ -963,6 +965,34 @@ void LLPluginClassMedia::showPageSource()
     sendMessage(message);
 }
 
+
+static U32 assignCefDebuggingPort()
+{
+    U32 base_port = gSavedSettings.getU32("CEFRemoteDebuggingPort");
+    if (base_port == 0)
+    {
+        return 0;
+    }
+    base_port = llclamp<U32>(base_port, MIN_DEBUG_PORT, MAX_DEBUG_PORT);
+
+    static U32 last_base_port = 0;
+    static U32 offset = 0;
+    if (base_port != last_base_port)
+    {
+        last_base_port = base_port;
+        offset = 0;
+    }
+
+    U32 new_port = base_port + offset;
+    if (new_port > MAX_DEBUG_PORT)
+    {
+        return 0;
+    }
+
+    ++offset;
+    return new_port;
+}
+
 void LLPluginClassMedia::setUserDataPath(const std::string &user_data_path_cache,
                                          const std::string &username,
                                          const std::string &user_data_path_cef_log)
@@ -974,6 +1004,10 @@ void LLPluginClassMedia::setUserDataPath(const std::string &user_data_path_cache
 
     bool cef_verbose_log = gSavedSettings.getBOOL("CefVerboseLog");
     message.setValueBoolean("cef_verbose_log", cef_verbose_log);
+
+    U32 cef_remote_debugging_port = assignCefDebuggingPort();
+    message.setValueU32("cef_remote_debugging_port", cef_remote_debugging_port);
+    mCefRemoteDebuggingPort = cef_remote_debugging_port;
     sendMessage(message);
 }
 
diff --git a/indra/llplugin/llpluginclassmedia.h b/indra/llplugin/llpluginclassmedia.h
index 40f6295e55..1125d530f4 100644
--- a/indra/llplugin/llpluginclassmedia.h
+++ b/indra/llplugin/llpluginclassmedia.h
@@ -165,6 +165,11 @@ public:
 
     std::string getPluginVersion() { return mPlugin?mPlugin->getPluginVersion():std::string(""); };
 
+    int getProcessID() { return mPlugin ? (int)mPlugin->getProcessID() : 0; };
+
+    // 0 means remote debugging is disabled for this plugin instance.
+    U32 getCefRemoteDebuggingPort() const { return mCefRemoteDebuggingPort; };
+
     bool getDisableTimeout() { return mPlugin?mPlugin->getDisableTimeout():false; };
     void setDisableTimeout(bool disable) { if(mPlugin) mPlugin->setDisableTimeout(disable); };
 
@@ -434,6 +439,8 @@ protected:
 
     F64             mSleepTime;
 
+    U32             mCefRemoteDebuggingPort {0};
+
     bool            mCanUndo;
     bool            mCanRedo;
     bool            mCanCut;
diff --git a/indra/llplugin/llpluginprocessparent.h b/indra/llplugin/llpluginprocessparent.h
index ea604ca8d7..3cfd4211d7 100644
--- a/indra/llplugin/llpluginprocessparent.h
+++ b/indra/llplugin/llpluginprocessparent.h
@@ -119,6 +119,8 @@ public:
     bool getDisableTimeout() { return mDisableTimeout; };
     void setDisableTimeout(bool disable) { mDisableTimeout = disable; };
 
+    LLProcess::id getProcessID() const { return mProcess ? mProcess->getProcessID() : 0; }
+
     void setLaunchTimeout(F32 timeout) { mPluginLaunchTimeout = timeout; };
     void setLockupTimeout(F32 timeout) { mPluginLockupTimeout = timeout; };
 
-- 
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