ngx_strlcasestrn()
diff --git a/src/core/ngx_string.h b/src/core/ngx_string.h
index af28186..0560bd8 100644
--- a/src/core/ngx_string.h
+++ b/src/core/ngx_string.h
@@ -149,6 +149,7 @@
 
 u_char *ngx_strstrn(u_char *s1, char *s2, size_t n);
 u_char *ngx_strcasestrn(u_char *s1, char *s2, size_t n);
+u_char *ngx_strlcasestrn(u_char *s1, u_char *last, u_char *s2, size_t n);
 
 ngx_int_t ngx_rstrncmp(u_char *s1, u_char *s2, size_t n);
 ngx_int_t ngx_rstrncasecmp(u_char *s1, u_char *s2, size_t n);