diff -r 8f2a834d1d68 -r ef6827505bd2 src/server/daemon/log.h
--- a/src/server/daemon/log.h	Fri Feb 24 11:17:53 2017 +0100
+++ b/src/server/daemon/log.h	Mon Mar 06 17:32:26 2017 +0100
@@ -31,6 +31,7 @@
 
 #include "../public/nsapi.h"
 #include <ucx/string.h>
+#include <ucx/utils.h>
 
 #include <inttypes.h>
 
@@ -56,6 +57,11 @@
     LogFile  *log;
 } AccessLog;
 
+typedef void (*log_writefunc)(void *cookie, char *msg, size_t length);
+typedef struct {
+    log_writefunc write;
+    void *cookie;
+} LogDup;
 // server logging
 int init_log_file(LogConfig *cfg);
 
@@ -65,6 +71,8 @@
 
 sstr_t log_get_prefix(int level);
 
+void log_add_logdup(LogDup *dup);
+void log_remove_logdup(LogDup *dup);
 
 // access logging
 LogFile* get_access_log_file(sstr_t file);