Enhancements

Add Subscription-UserInfo header to exporter, supports extracting from original headers and from info nodes.
Optimize codes.

src/multithread.cpp

@@ -4,9 +4,10 @@
 
 //safety lock for multi-thread
 typedef std::lock_guard<std::mutex> guarded_mutex;
-std::mutex on_configuring, on_emoji, on_rename;
+std::mutex on_configuring, on_emoji, on_rename, on_stream, on_time;
 
 extern string_array emojis, renames;
+extern string_array stream_rules, time_rules;
 
 string_array safe_get_emojis()
 {
@@ -20,6 +21,18 @@ string_array safe_get_renames()
     return renames;
 }
 
+string_array safe_get_streams()
+{
+    guarded_mutex guard(on_stream);
+    return stream_rules;
+}
+
+string_array safe_get_times()
+{
+    guarded_mutex guard(on_time);
+    return time_rules;
+}
+
 void safe_set_emojis(string_array &data)
 {
     guarded_mutex guard(on_emoji);
@@ -31,3 +44,15 @@ void safe_set_renames(string_array &data)
     guarded_mutex guard(on_rename);
     renames.swap(data);
 }
+
+void safe_set_streams(string_array &data)
+{
+    guarded_mutex guard(on_stream);
+    stream_rules.swap(data);
+}
+
+void safe_set_times(string_array &data)
+{
+    guarded_mutex guard(on_time);
+    time_rules.swap(data);
+}