diff --git a/ini_reader.h b/ini_reader.h
index 674c57a..ae718bc 100644
--- a/ini_reader.h
+++ b/ini_reader.h
@@ -7,6 +7,7 @@
 
 typedef std::map<std::string, std::multimap<std::string, std::string>> ini_data_struct;
 typedef std::multimap<std::string, std::string> string_multimap;
+typedef std::vector<std::string> string_array;
 
 class INIReader
 {
@@ -31,13 +32,9 @@ private:
     bool chkIgnore(std::string section)
     {
         bool excluded = false, included = false;
-        if(count(exclude_sections.begin(), exclude_sections.end(), section) > 0)
-            excluded = true;
-        if(include_sections.size() != 0)
-        {
-            if(count(include_sections.begin(), include_sections.end(), section) > 0)
-                included = true;
-        }
+        excluded = std::find(exclude_sections.cbegin(), exclude_sections.cend(), section) != exclude_sections.cend();
+        if(include_sections.size())
+            included = std::find(include_sections.cbegin(), include_sections.cend(), section) != include_sections.cend();
         else
             included = true;
 
diff --git a/main.cpp b/main.cpp
index f32be8b..dcacfd6 100644
--- a/main.cpp
+++ b/main.cpp
@@ -17,6 +17,7 @@
 #include "multithread.h"
 
 //common settings
+std::string pref_path = "pref.ini";
 string_array def_exclude_remarks, def_include_remarks, rulesets;
 std::vector<ruleset_content> ruleset_content_array;
 std::string listen_address = "127.0.0.1", default_url, managed_config_prefix;
@@ -61,10 +62,9 @@ void setcd(char *argv[])
 }
 
 
-std::string refreshRulesets()
+std::string refreshRulesets(string_array &ruleset_list, std::vector<ruleset_content> &rca)
 {
-    guarded_mutex guard(on_configuring);
-    eraseElements(ruleset_content_array);
+    eraseElements(rca);
     std::string rule_group, rule_url;
     ruleset_content rc;
 
@@ -76,7 +76,7 @@ std::string refreshRulesets()
     else
         proxy = proxy_ruleset;
 
-    for(std::string &x : rulesets)
+    for(std::string &x : ruleset_list)
     {
         /*
         vArray = split(x, ",");
@@ -93,7 +93,7 @@ std::string refreshRulesets()
         {
             std::cerr<<"Adding rule '"<<rule_url.substr(2)<<","<<rule_group<<"'."<<std::endl;
             rc = {rule_group, "", rule_url};
-            ruleset_content_array.emplace_back(rc);
+            rca.emplace_back(rc);
             continue;
         }
         else
@@ -103,13 +103,15 @@ std::string refreshRulesets()
             {
                 rc = {rule_group, rule_url, fileGet(rule_url, false)};
             }
-            else
+            else if(rule_url.find("http://") == 0 || rule_url.find("https://") == 0)
             {
                 rc = {rule_group, rule_url, webGet(rule_url, proxy)};
             }
+            else
+                continue;
         }
         if(rc.rule_content.size())
-            ruleset_content_array.emplace_back(rc);
+            rca.emplace_back(rc);
         else
             std::cerr<<"Warning: No data was fetched from this link. Skipping..."<<std::endl;
     }
@@ -127,8 +129,9 @@ void readConf()
     eraseElements(rulesets);
     string_array emojis_temp, renames_temp;
     INIReader ini;
+    ini.allow_dup_section_titles = true;
     //ini.do_utf8_to_gbk = true;
-    ini.ParseFile("pref.ini");
+    ini.ParseFile(pref_path);
 
     ini.EnterSection("common");
     if(ini.ItemExist("api_mode"))
@@ -227,9 +230,46 @@ std::string subconverter(RESPONSE_CALLBACK_ARGS)
     std::string append_type = getUrlArg(argument, "append_type"), tfo = getUrlArg(argument, "tfo"), udp = getUrlArg(argument, "udp"), nodelist = getUrlArg(argument, "list");
     std::string include = UrlDecode(getUrlArg(argument, "include")), exclude = UrlDecode(getUrlArg(argument, "exclude"));
     std::string base_content, output_content;
-    string_array extra_group, include_remarks, exclude_remarks;
-    std::string groups = urlsafe_base64_decode(getUrlArg(argument, "groups"));
-    extra_group = split(groups, "`");
+    string_array extra_group, extra_ruleset, include_remarks, exclude_remarks;
+    std::string groups = urlsafe_base64_decode(getUrlArg(argument, "groups")), ruleset = urlsafe_base64_decode(getUrlArg(argument, "ruleset"));
+    std::vector<ruleset_content> rca;
+
+    if(!url.size())
+        url = default_url;
+    if(!url.size() || !target.size())
+        return "Invalid request!";
+    if(!api_mode || cfw_child_process)
+        readConf();
+
+    if(groups.size())
+    {
+        extra_group = split(groups, "@");
+        if(!extra_group.size())
+            extra_group = clash_extra_group;
+    }
+    else
+        extra_group = clash_extra_group;
+
+    if(ruleset.size())
+    {
+        extra_ruleset = split(ruleset, "@");
+        if(!extra_ruleset.size())
+        {
+            if(update_ruleset_on_request || cfw_child_process)
+                refreshRulesets(rulesets, ruleset_content_array);
+            rca = ruleset_content_array;
+        }
+        else
+        {
+            refreshRulesets(extra_ruleset, rca);
+        }
+    }
+    else
+    {
+        if(update_ruleset_on_request || cfw_child_process)
+            refreshRulesets(rulesets, ruleset_content_array);
+        rca = ruleset_content_array;
+    }
 
     extra_settings ext;
     if(emoji == "true")
@@ -259,13 +299,6 @@ std::string subconverter(RESPONSE_CALLBACK_ARGS)
     ext.nodelist = nodelist == "true";
     ext.surge_ssr_path = surge_ssr_path;
 
-    if(!url.size())
-        url = default_url;
-    if(!url.size() || !target.size())
-        return "Invalid request!";
-    if(!api_mode || cfw_child_process)
-        readConf();
-
     string_array urls = split(url, "|");
     std::vector<nodeInfo> nodes;
     int groupID = 0;
@@ -290,8 +323,6 @@ std::string subconverter(RESPONSE_CALLBACK_ARGS)
     }
     if(!nodes.size())
         return "No nodes were found!";
-    if(update_ruleset_on_request || cfw_child_process)
-        refreshRulesets();
 
     std::cerr<<"Generate target: ";
     if(target == "clash" || target == "clashr")
@@ -302,21 +333,22 @@ std::string subconverter(RESPONSE_CALLBACK_ARGS)
         else
             base_content = webGet(clash_rule_base, getSystemProxy());
 
-        output_content = netchToClash(nodes, base_content, ruleset_content_array, clash_extra_group, target == "clashr", ext);
+        output_content = netchToClash(nodes, base_content, rca, extra_group, target == "clashr", ext);
         if(upload == "true")
             uploadGist("clash", upload_path, output_content, false);
         return output_content;
     }
     else if(target == "surge")
     {
-        std::cerr<<"Surge "<<version<<std::endl;
-        int surge_ver = version.size() ? stoi(version) : 3;
+        int surge_ver = version.size() ? to_int(version, 3) : 3;
+        std::cerr<<"Surge "<<surge_ver<<std::endl;
+
         if(fileExist(surge_rule_base))
             base_content = fileGet(surge_rule_base, false);
         else
             base_content = webGet(surge_rule_base, getSystemProxy());
 
-        output_content = netchToSurge(nodes, base_content, ruleset_content_array, clash_extra_group, surge_ver, ext);
+        output_content = netchToSurge(nodes, base_content, rca, extra_group, surge_ver, ext);
         if(upload == "true")
             uploadGist("surge" + version, upload_path, output_content, true);
 
@@ -332,7 +364,7 @@ std::string subconverter(RESPONSE_CALLBACK_ARGS)
         else
             base_content = webGet(surfboard_rule_base, getSystemProxy());
 
-        output_content = netchToSurge(nodes, base_content, ruleset_content_array, clash_extra_group, 2, ext);
+        output_content = netchToSurge(nodes, base_content, rca, extra_group, 2, ext);
         if(upload == "true")
             uploadGist("surfboard", upload_path, output_content, true);
 
@@ -348,7 +380,7 @@ std::string subconverter(RESPONSE_CALLBACK_ARGS)
         else
             base_content = webGet(mellow_rule_base, getSystemProxy());
 
-        output_content = netchToMellow(nodes, base_content, ruleset_content_array, clash_extra_group, ext);
+        output_content = netchToMellow(nodes, base_content, rca, extra_group, ext);
         if(upload == "true")
             uploadGist("mellow", upload_path, output_content, true);
 
@@ -415,6 +447,8 @@ void chkArg(int argc, char *argv[])
     {
         if(strcmp(argv[i], "-cfw") == 0)
             cfw_child_process = true;
+        else if(strcmp(argv[i], "-f") == 0 || strcmp(argv[i], "--file") == 0)
+            pref_path.assign(argv[++i]);
     }
 }
 
@@ -433,13 +467,14 @@ int main(int argc, char *argv[])
 #ifndef _DEBUG
     setcd(argv);
 #endif // _DEBUG
+    chkArg(argc, argv);
     readConf();
     if(!update_ruleset_on_request)
-        refreshRulesets();
+        refreshRulesets(rulesets, ruleset_content_array);
 
     append_response("GET", "/refreshrules", "text/plain", [](RESPONSE_CALLBACK_ARGS) -> std::string
     {
-        return refreshRulesets();
+        return refreshRulesets(rulesets, ruleset_content_array);
     });
 
     append_response("GET", "/readconf", "text/plain", [](RESPONSE_CALLBACK_ARGS) -> std::string
diff --git a/misc.cpp b/misc.cpp
index a98ad61..6f3a20c 100644
--- a/misc.cpp
+++ b/misc.cpp
@@ -402,6 +402,7 @@ std::string trim(const std::string& str)
 std::string getUrlArg(std::string url, std::string request)
 {
     std::smatch result;
+    /*
     if (regex_search(url.cbegin(), url.cend(), result, std::regex(request + "=(.*?)&")))
     {
         return result[1];
@@ -414,6 +415,15 @@ std::string getUrlArg(std::string url, std::string request)
     {
         return std::string();
     }
+    */
+
+    string_array vArray, arglist = split(url, "&");
+    for(std::string &x : arglist)
+    {
+        if(regex_search(x.cbegin(), x.cend(), result, std::regex("^" + request + "=(.*)$")))
+            return result[1];
+    }
+    return std::string();
 }
 
 std::string replace_all_distinct(std::string str, std::string old_value, std::string new_value)
@@ -430,22 +440,43 @@ std::string replace_all_distinct(std::string str, std::string old_value, std::st
 
 bool regFind(std::string src, std::string target)
 {
-    std::regex reg(target);
-    return regex_search(src, reg);
+    try
+    {
+        std::regex reg(target);
+        return regex_search(src, reg);
+    }
+    catch (std::regex_error &e)
+    {
+        return false;
+    }
 }
 
 std::string regReplace(std::string src, std::string match, std::string rep)
 {
     std::string result = "";
-    std::regex reg(match);
-    regex_replace(back_inserter(result), src.begin(), src.end(), reg, rep);
+    try
+    {
+        std::regex reg(match);
+        regex_replace(back_inserter(result), src.begin(), src.end(), reg, rep);
+    }
+    catch (std::regex_error &e)
+    {
+        result = src;
+    }
     return result;
 }
 
 bool regMatch(std::string src, std::string match)
 {
-    std::regex reg(match);
-    return regex_match(src, reg);
+    try
+    {
+        std::regex reg(match);
+        return regex_match(src, reg);
+    }
+    catch (std::regex_error &e)
+    {
+        return false;
+    }
 }
 
 std::string speedCalc(double speed)
@@ -735,6 +766,19 @@ std::string to_string(const YAML::Node &node)
     return ss.str();
 }
 
+int to_int(std::string &s, int def_vaule)
+{
+    int retval = 0;
+    char c;
+    std::stringstream ss(s);
+    if(!(ss >> retval))
+        return def_vaule;
+    else if(ss >> c)
+        return def_vaule;
+    else
+        return retval;
+}
+
 std::string getFormData(const std::string &raw_data)
 {
     std::stringstream strstrm;
diff --git a/misc.h b/misc.h
index 2cd3186..9bb80b4 100644
--- a/misc.h
+++ b/misc.h
@@ -52,6 +52,7 @@ void removeUTF8BOM(std::string &data);
 int shortAssemble(unsigned short num_a, unsigned short num_b);
 void shortDisassemble(int source, unsigned short &num_a, unsigned short &num_b);
 std::string to_string(const YAML::Node &node);
+int to_int(std::string &s, int def_vaule = 0);
 
 std::string fileGet(std::string path, bool binary = true);
 int fileWrite(std::string path, std::string content, bool overwrite);
@@ -78,7 +79,7 @@ namespace std
         template <typename T> std::string to_string(const T& n)
         {
             std::ostringstream ss;
-            ss << n ;
+            ss << n;
             return ss.str();
         }
     }
diff --git a/rules/LocalAreaNetwork.list b/rules/LocalAreaNetwork.list
index 0688b1e..a8b9e68 100644
--- a/rules/LocalAreaNetwork.list
+++ b/rules/LocalAreaNetwork.list
@@ -4,7 +4,7 @@ IP-CIDR,10.0.0.0/8
 IP-CIDR,172.16.0.0/12
 IP-CIDR,127.0.0.0/8
 IP-CIDR,100.64.0.0/10
-IP-CIDR,::1/128
-IP-CIDR,fc00::/7
-IP-CIDR,fe80::/10
-IP-CIDR,fd00::/8
+IP-CIDR6,::1/128
+IP-CIDR6,fc00::/7
+IP-CIDR6,fe80::/10
+IP-CIDR6,fd00::/8
diff --git a/subexport.cpp b/subexport.cpp
index d8cafec..2f658c7 100644
--- a/subexport.cpp
+++ b/subexport.cpp
@@ -610,7 +610,7 @@ std::string netchToSurge(std::vector<nodeInfo> &nodes, std::string &base_conf, s
 
     ini.SetCurrentSection("Proxy");
     ini.EraseSection();
-    ini.Set("DIRECT", "direct");
+    ini.Set("{NONAME}", "DIRECT = direct");
     for(nodeInfo &x : nodes)
     {
         json.Parse(x.proxyStr.data());
diff --git a/webserver.cpp b/webserver.cpp
index ca3361c..6a754ca 100644
--- a/webserver.cpp
+++ b/webserver.cpp
@@ -10,6 +10,7 @@
 #include "webserver.h"
 
 typedef std::vector<std::string> string_array;
+int def_timeout = 5;
 
 struct responseRoute
 {
@@ -21,7 +22,7 @@ struct responseRoute
 
 std::vector<responseRoute> responses;
 
-//for use of multi-thread socket test
+//for use of multi-thread
 typedef std::lock_guard<std::mutex> guarded_mutex;
 int working_thread = 0, max_send_failure = 10;
 bool SERVER_EXIT_FLAG = false;
@@ -206,6 +207,21 @@ void send_file(std::string arguments, int sock)
     sendall(sock, "0\r\n\r\n");
 }
 
+int setTimeout(SOCKET s, int timeout)
+{
+    int ret = -1;
+#ifdef _WIN32
+    ret = setsockopt(s, SOL_SOCKET, SO_SNDTIMEO, (char*)&timeout, sizeof(int));
+    ret = setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, (char*)&timeout, sizeof(int));
+#else
+    struct timeval timeo = {0, timeout * 1000};
+    ret = setsockopt(s, SOL_SOCKET, SO_SNDTIMEO, (const char*)&timeo, sizeof(timeo));
+    ret = setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, (const char*)&timeo, sizeof(timeo));
+#endif
+    def_timeout = timeout;
+    return ret;
+}
+
 void handle_req(std::string request, int client_sock)
 {
     working_acc();
@@ -220,8 +236,7 @@ void handle_req(std::string request, int client_sock)
         goto end;
     }
 
-    printf("handle_cmd:    %s\n", command);
-    printf("handle_path:   %s\n", arguments);
+    std::cerr<<"handle_cmd:    "<<command<<"\n"<<"handle_path:   "<<arguments<<"\n";
 
     vArray = split(arguments, "?");
 
@@ -277,7 +292,7 @@ void append_response(std::string type, std::string request, std::string content_
     responses.push_back(rr);
 }
 
-void* start_web_server(void *argv)
+int start_web_server_multi(void *argv)
 {
     //log startup
     struct listener_args *args = (listener_args*)argv;
@@ -295,7 +310,7 @@ void* start_web_server(void *argv)
     {
         //log socket error
         std::cerr<<"socket build error!"<<std::endl;
-        return NULL;
+        return 0;
     }
 
     ZeroMemory(&server_addr, sizeof(server_addr));
@@ -307,14 +322,14 @@ void* start_web_server(void *argv)
         //log bind error
         std::cerr<<"socket bind error!"<<std::endl;
         closesocket(server_socket);
-        return NULL;
+        return 0;
     }
     if (listen(server_socket, max_conn) == -1 )
     {
         //log listen error
         std::cerr<<"socket listen error!"<<std::endl;
         closesocket(server_socket);
-        return NULL;
+        return 0;
     }
     setTimeout(server_socket, 500);
 
diff --git a/webserver_libevent.cpp b/webserver_libevent.cpp
index e4669cd..67811ed 100644
--- a/webserver_libevent.cpp
+++ b/webserver_libevent.cpp
@@ -2,6 +2,7 @@
 #include <cstdint>
 #include <iostream>
 #include <evhttp.h>
+#include <malloc.h>
 
 #include <string>
 #include <vector>
@@ -22,10 +23,18 @@ struct responseRoute
 
 std::vector<responseRoute> responses;
 
+static inline void buffer_cleanup(struct evbuffer *eb)
+{
+    evbuffer_free(eb);
+    #ifdef MALLOC_TRIM
+    malloc_trim(0);
+    #endif // MALLOC_TRIM
+}
+
 static inline int process_request(const char *method_str, std::string uri, std::string &postdata, std::string &content_type, std::string &return_data)
 {
     std::string path, arguments;
-    //std::cerr << "handle_cmd:    " << method_str << std::endl << "handle_uri:    " << uri << std::endl;
+    std::cerr << "handle_cmd:    " << method_str << std::endl << "handle_uri:    " << uri << std::endl;
 
     if(strFind(uri, "?"))
     {
@@ -56,7 +65,7 @@ static inline int process_request(const char *method_str, std::string uri, std::
 void OnReq(evhttp_request *req, void *args)
 {
     const char *req_content_type = evhttp_find_header(req->input_headers, "Content-Type"), *req_ac_method = evhttp_find_header(req->input_headers, "Access-Control-Request-Method");
-    const char *req_method = req_ac_method == NULL ? EVBUFFER_LENGTH(req->input_buffer) == 0 ? "GET" : "POST" : "OPTIONS", *uri = evhttp_request_get_uri(req);
+    const char *req_method = req_ac_method == NULL ? EVBUFFER_LENGTH(req->input_buffer) == 0 ? "GET" : "POST" : "OPTIONS", *uri = req->uri;
     int retVal;
     std::string postdata, content_type, return_data;
 
@@ -73,7 +82,8 @@ void OnReq(evhttp_request *req, void *args)
 
     retVal = process_request(req_method, uri, postdata, content_type, return_data);
 
-    auto *OutBuf = evhttp_request_get_output_buffer(req);
+    //auto *OutBuf = evhttp_request_get_output_buffer(req);
+    struct evbuffer *OutBuf = evbuffer_new();
     if (!OutBuf)
         return;
 
@@ -83,7 +93,6 @@ void OnReq(evhttp_request *req, void *args)
         evhttp_add_header(req->output_headers, "Access-Control-Allow-Origin", "*");
         evhttp_add_header(req->output_headers, "Access-Control-Allow-Headers", "*");
         evhttp_send_reply(req, HTTP_OK, "", NULL);
-        return;
         break;
     case 0: //found normal
         if(content_type.size())
@@ -92,6 +101,7 @@ void OnReq(evhttp_request *req, void *args)
             {
                 evhttp_add_header(req->output_headers, "Location", return_data.c_str());
                 evhttp_send_reply(req, HTTP_MOVETEMP, "", NULL);
+                buffer_cleanup(OutBuf);
                 return;
             }
             else
@@ -108,6 +118,7 @@ void OnReq(evhttp_request *req, void *args)
     default: //undefined behavior
         evhttp_send_error(req, HTTP_INTERNAL, "");
     }
+    buffer_cleanup(OutBuf);
 }
 
 int start_web_server(void *argv)