Fixed Nginx CPU 100% usage issue

Author: ip2location

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2021 IP2Location.com
+Copyright (c) 2022 IP2Location.com
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

ngx_http_ip2proxy.c

@@ -31,6 +31,7 @@ static char *ngx_http_ip2proxy_database(ngx_conf_t *cf, ngx_command_t *cmd, void
 static char *ngx_http_ip2proxy_proxy(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
 static ngx_int_t ngx_http_ip2proxy_cidr_value(ngx_conf_t *cf, ngx_str_t *net, ngx_cidr_t *cidr);
 static void ngx_http_ip2proxy_cleanup(void *data);
+static IP2Proxy *ip2proxy_bin_handler;
 
 static ngx_command_t ngx_http_ip2proxy_commands[] = {
 	{
@@ -345,6 +346,12 @@ ngx_http_ip2proxy_database(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
 		return "Duplicated";
 	}
 
+	if (ip2proxy_bin_handler){
+		//close the bin if it's still opened
+		IP2Proxy_close(ip2proxy_bin_handler);
+		ip2proxy_bin_handler = NULL;
+	}
+
 	value = cf->args->elts;
 
 	if (value[1].len == 0) {
@@ -354,6 +361,7 @@ ngx_http_ip2proxy_database(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
 
 	// Open IP2Proxy BIN database
 	gcf->handler = IP2Proxy_open((char *) value[1].data);
+	ip2proxy_bin_handler = gcf->handler;
 
 	if (gcf->handler == NULL) {
 		ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "Unable to open database file \"%s\".", &value[1].data);
@@ -426,10 +434,10 @@ ngx_http_ip2proxy_cidr_value(ngx_conf_t *cf, ngx_str_t *net, ngx_cidr_t *cidr)
 static void
 ngx_http_ip2proxy_cleanup(void *data)
 {
-	ngx_http_ip2proxy_conf_t	*gcf = data;
+	//ngx_http_ip2proxy_conf_t	*gcf = data;
 
-	if (gcf->handler) {
-		IP2Proxy_close(gcf->handler);
-		gcf->handler = NULL;
-	}
+	// if (gcf->handler) {
+	// 	IP2Proxy_close(gcf->handler);
+	// 	gcf->handler = NULL;
+	// }
 }