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-rw-r--r--lib/libwebsockets.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/libwebsockets.h b/lib/libwebsockets.h
index 77afd84..8b98d90 100644
--- a/lib/libwebsockets.h
+++ b/lib/libwebsockets.h
@@ -546,6 +546,9 @@ struct libwebsocket_protocols {
* @per_session_data_size: Libwebsockets will auto-malloc this much
* memory for the use of the extension, a pointer
* to it comes in the @user callback parameter
+ * @per_context_private_data: Optional storage for this externsion that
+ * is per-context, so it can track stuff across
+ * all sessions, etc, if it wants
*/
struct libwebsocket_extension {