diff --git a/CMakeLists.txt b/CMakeLists.txt
index 58838bb..ad26af4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -14,7 +14,8 @@ ELSE()
     ADD_COMPILE_OPTIONS(/W4)
 ENDIF()
 
-OPTION(USING_STD_REGEX "Use std::regex from C++ library instead of PCRE2." OFF)
+#remove std::regex support since it is not compatible with group modifiers and slow
+#OPTION(USING_STD_REGEX "Use std::regex from C++ library instead of PCRE2." OFF)
 OPTION(USING_MALLOC_TRIM "Call malloc_trim after processing request to lower memory usage (Your system must support malloc_trim)." OFF)
 OPTION(USING_MBEDTLS "Use mbedTLS instead of OpenSSL for MD5 calculation." OFF)
 
@@ -92,14 +93,14 @@ LINK_DIRECTORIES(${YAML_CPP_LIBRARY_DIRS})
 INCLUDE_DIRECTORIES(${YAML_CPP_INCLUDE_DIRS})
 TARGET_LINK_LIBRARIES(subconverter ${YAML_CPP_LIBRARY})
 
-IF(USING_STD_REGEX STREQUAL "ON")
-    ADD_DEFINITIONS(-DUSE_STD_REGEX)
-ELSE()
+#IF(USING_STD_REGEX STREQUAL "ON")
+#    ADD_DEFINITIONS(-DUSE_STD_REGEX)
+#ELSE()
     FIND_PACKAGE(PCRE2 REQUIRED)
     INCLUDE_DIRECTORIES(${PCRE2_INCLUDE_DIRS})
     TARGET_LINK_LIBRARIES(subconverter ${PCRE2_LIBRARY})
     ADD_DEFINITIONS(-DPCRE2_STATIC)
-ENDIF()
+#ENDIF()
 
 IF(WIN32)
     TARGET_LINK_LIBRARIES(subconverter wsock32 ws2_32)
diff --git a/src/interfaces.cpp b/src/interfaces.cpp
index 9cf2ab5..3572414 100644
--- a/src/interfaces.cpp
+++ b/src/interfaces.cpp
@@ -2038,7 +2038,8 @@ std::string getRewriteRemote(RESPONSE_CALLBACK_ARGS)
 
 std::string parseHostname(inja::Arguments &args)
 {
-    std::string data = args.at(0)->get<std::string>();
+    std::string data = args.at(0)->get<std::string>(), hostname;
+    const std::string matcher = R"(^(?i:hostname\s*?=\s*?)(.*?)\s$)";
     string_array urls = split(data, ",");
     if(!urls.size())
         return std::string();
@@ -2047,7 +2048,12 @@ std::string parseHostname(inja::Arguments &args)
     for(std::string &x : urls)
     {
         input_content = webGet(x, proxy, cache_config);
-        output_content += regReplace(input_content, "(?:[\\s\\S]*?)^(?i:hostname\\s*?=\\s*?)(.*?)\\s$(?:[\\s\\S]*)", "$1") + ",";
+        regGetMatch(input_content, matcher, 2, NULL, &hostname);
+        if(hostname.size())
+        {
+            output_content += hostname + ",";
+            hostname.clear();
+        }
     }
     string_array vArray = split(output_content, ",");
     std::set<std::string> hostnames;
diff --git a/src/misc.cpp b/src/misc.cpp
index b874dcd..ce9d680 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -1,5 +1,4 @@
 #include <chrono>
-//#include <regex>
 #include <fstream>
 #include <thread>
 #include <sstream>
@@ -9,12 +8,14 @@
 //#include <filesystem>
 #include <unistd.h>
 
+/*
 #ifdef USE_STD_REGEX
 #include <regex>
 #else
+*/
 #include <jpcre2.hpp>
 typedef jpcre2::select<char> jp;
-#endif // USE_STD_REGEX
+//#endif // USE_STD_REGEX
 
 #include <rapidjson/document.h>
 
@@ -534,7 +535,7 @@ std::string replace_all_distinct(std::string str, const std::string &old_value,
     }
     return str;
 }
-
+/*
 #ifdef USE_STD_REGEX
 bool regValid(const std::string &reg)
 {
@@ -611,42 +612,113 @@ bool regMatch(const std::string &src, const std::string &match)
     }
 }
 
+int regGetMatch(const std::string &src, const std::string &match, size_t group_count, ...)
+{
+    try
+    {
+        std::regex::flag_type flags = std::regex::extended | std::regex::ECMAScript;
+        std::string target = match;
+        if(match.find("(?i)") == 0)
+        {
+            target.erase(0, 4);
+            flags |= std::regex::icase;
+        }
+        std::regex reg(target, flags);
+        std::smatch result;
+        if(regex_search(src.cbegin(), src.cend(), result, reg))
+        {
+            if(result.size() < group_count - 1)
+                return -1;
+            va_list vl;
+            va_start(vl, group_count);
+            size_t index = 0;
+            while(group_count)
+            {
+                std::string* arg = va_arg(vl, std::string*);
+                if(arg != NULL)
+                    *arg = result[index];
+                index++;
+                group_count--;
+            }
+            va_end(vl);
+        }
+        else
+            return -2;
+        return 0;
+    }
+    catch (std::regex_error&)
+    {
+        return -3;
+    }
+}
+
 #else
-
-bool regMatch(const std::string &src, const std::string &target)
+*/
+bool regMatch(const std::string &src, const std::string &match)
 {
     jp::Regex reg;
-    reg.setPattern(target).addModifier("gm").addPcre2Option(PCRE2_ANCHORED|PCRE2_ENDANCHORED|PCRE2_UTF).compile();
+    reg.setPattern(match).addModifier("gm").addPcre2Option(PCRE2_ANCHORED|PCRE2_ENDANCHORED|PCRE2_UTF).compile();
     if(!reg)
         return false;
     return reg.match(src);
 }
 
-bool regFind(const std::string &src, const std::string &target)
+bool regFind(const std::string &src, const std::string &match)
 {
     jp::Regex reg;
-    reg.setPattern(target).addModifier("gm").addPcre2Option(PCRE2_UTF).compile();
+    reg.setPattern(match).addModifier("gm").addPcre2Option(PCRE2_UTF).compile();
     if(!reg)
         return false;
     return reg.match(src);
 }
 
-std::string regReplace(const std::string &src, const std::string &target, const std::string &rep)
+std::string regReplace(const std::string &src, const std::string &match, const std::string &rep)
 {
     jp::Regex reg;
-    reg.setPattern(target).addModifier("gm").addPcre2Option(PCRE2_UTF).compile();
+    reg.setPattern(match).addModifier("gm").addPcre2Option(PCRE2_UTF).compile();
     if(!reg)
         return src;
-    return reg.replace(src, rep);
+    return reg.replace(src, rep, "g");
 }
 
-bool regValid(const std::string &target)
+bool regValid(const std::string &reg)
 {
-    jp::Regex reg(target);
-    return !!reg;
+    jp::Regex r(reg);
+    return !!r;
 }
 
-#endif // USE_STD_REGEX
+int regGetMatch(const std::string &src, const std::string &match, size_t group_count, ...)
+{
+    jp::Regex reg;
+    reg.setPattern(match).addModifier("gm").addPcre2Option(PCRE2_UTF).compile();
+    jp::VecNum vec_num;
+    jp::RegexMatch rm;
+    size_t count = rm.setRegexObject(&reg).setSubject(src).setNumberedSubstringVector(&vec_num).match();
+    if(!count || count < group_count - 1)
+        return -1;
+    va_list vl;
+    va_start(vl, group_count);
+    size_t index = 0, match_index = 0;
+    while(group_count)
+    {
+        std::string* arg = va_arg(vl, std::string*);
+        if(arg != NULL)
+            *arg = vec_num[match_index][index];
+        index++;
+        group_count--;
+        if(vec_num[match_index].size() <= index)
+        {
+            match_index++;
+            index = 0;
+        }
+        if(vec_num.size() <= match_index)
+            break;
+    }
+    va_end(vl);
+    return 0;
+}
+
+//#endif // USE_STD_REGEX
 
 std::string regTrim(const std::string &src)
 {
diff --git a/src/misc.h b/src/misc.h
index c16d4f3..f2959e8 100644
--- a/src/misc.h
+++ b/src/misc.h
@@ -126,10 +126,11 @@ bool is_str_utf8(const std::string &data);
 std::string getFormData(const std::string &raw_data);
 
 void sleep(int interval);
-bool regValid(const std::string &target);
+bool regValid(const std::string &reg);
 bool regFind(const std::string &src, const std::string &match);
 std::string regReplace(const std::string &src, const std::string &match, const std::string &rep);
 bool regMatch(const std::string &src, const std::string &match);
+int regGetMatch(const std::string &src, const std::string &match, size_t group_count, ...);
 std::string regTrim(const std::string &src);
 std::string speedCalc(double speed);
 std::string getMD5(const std::string &data);
diff --git a/src/speedtestutil.cpp b/src/speedtestutil.cpp
index e626457..e7804cf 100644
--- a/src/speedtestutil.cpp
+++ b/src/speedtestutil.cpp
@@ -43,7 +43,6 @@ template <typename T> T safe_as (const YAML::Node& node)
 void explodeVmess(std::string vmess, const std::string &custom_port, nodeInfo &node)
 {
     std::string version, ps, add, port, type, id, aid, net, path, host, tls;
-    tribool udp, tfo, scv;
     Document jsondata;
     std::vector<std::string> vArray;
     if(regMatch(vmess, "vmess://(.*?)\\?(.*)")) //shadowrocket style link
@@ -105,7 +104,7 @@ void explodeVmess(std::string vmess, const std::string &custom_port, nodeInfo &n
     node.remarks = ps;
     node.server = add;
     node.port = to_int(port, 0);
-    node.proxyStr = vmessConstruct(add, port, type, id, aid, net, "auto", path, host, "", tls, udp, tfo, scv);
+    node.proxyStr = vmessConstruct(add, port, type, id, aid, net, "auto", path, host, "", tls);
 }
 
 void explodeVmessConf(std::string content, const std::string &custom_port, bool libev, std::vector<nodeInfo> &nodes)
@@ -260,8 +259,8 @@ void explodeVmessConf(std::string content, const std::string &custom_port, bool
 
 void explodeSS(std::string ss, bool libev, const std::string &custom_port, nodeInfo &node)
 {
-    std::string ps, password, method, server, port, plugins, plugin, pluginopts, addition, group = SS_DEFAULT_GROUP;
-    std::vector<std::string> args, secret;
+    std::string ps, password, method, server, port, plugins, plugin, pluginopts, addition, group = SS_DEFAULT_GROUP, secret;
+    //std::vector<std::string> args, secret;
     ss = replace_all_distinct(ss.substr(5), "/?", "?");
     if(strFind(ss, "#"))
     {
@@ -281,6 +280,7 @@ void explodeSS(std::string ss, bool libev, const std::string &custom_port, nodeI
     }
     if(strFind(ss, "@"))
     {
+        /*
         ss = regReplace(ss, "(.*?)@(.*):(.*)", "$1|$2|$3");
         args = split(ss, "|");
         secret = split(urlsafe_base64_decode(args[0]), ":");
@@ -290,9 +290,15 @@ void explodeSS(std::string ss, bool libev, const std::string &custom_port, nodeI
         password = secret[1];
         server = args[1];
         port = custom_port.empty() ? args[2] : custom_port;
+        */
+        if(regGetMatch(ss, "(.*?)@(.*):(.*)", 4, NULL, &secret, &server, &port))
+            return;
+        if(regGetMatch(urlsafe_base64_decode(secret), "(.*?):(.*)", 3, NULL, &method, &password))
+            return;
     }
     else
     {
+        /*
         if(!regMatch(urlsafe_base64_decode(ss), "(.*?):(.*?)@(.*):(.*)"))
             return;
         ss = regReplace(urlsafe_base64_decode(ss), "(.*?):(.*?)@(.*):(.*)", "$1|$2|$3|$4");
@@ -303,7 +309,12 @@ void explodeSS(std::string ss, bool libev, const std::string &custom_port, nodeI
         password = args[1];
         server = args[2];
         port = custom_port.empty() ? args[3] : custom_port;
+        */
+        if(regGetMatch(urlsafe_base64_decode(ss), "(.*?):(.*)@(.*):(.*)", 5, NULL, &method, &password, &server, &port))
+            return;
     }
+    if(custom_port.size())
+        port = custom_port;
     if(ps.empty())
         ps = server + ":" + port;
 
@@ -501,6 +512,7 @@ void explodeSSR(std::string ssr, bool ss_libev, bool ssr_libev, const std::strin
         protoparam = regReplace(urlsafe_base64_decode(getUrlArg(strobfs, "protoparam")), "\\s", "");
     }
 
+    /*
     ssr = regReplace(ssr, "(.*):(.*?):(.*?):(.*?):(.*?):(.*)", "$1|$2|$3|$4|$5|$6");
     strcfg = split(ssr, "|");
 
@@ -513,6 +525,12 @@ void explodeSSR(std::string ssr, bool ss_libev, bool ssr_libev, const std::strin
     method = strcfg[3];
     obfs = strcfg[4];
     password = urlsafe_base64_decode(strcfg[5]);
+    */
+    if(regGetMatch(ssr, "(.*):(.*?):(.*?):(.*?):(.*?):(.*)", 7, NULL, &server, &port, &protocol, &method, &obfs, &password))
+        return;
+    password = urlsafe_base64_decode(password);
+    if(custom_port.size())
+        port = custom_port;
 
     if(group.empty())
         group = SSR_DEFAULT_GROUP;
@@ -700,6 +718,7 @@ void explodeHTTPSub(std::string link, const std::string &custom_port, nodeInfo &
     link = urlsafe_base64_decode(link);
     if(strFind(link, "@"))
     {
+        /*
         link = regReplace(link, "(.*?):(.*?)@(.*):(.*)", "$1|$2|$3|$4");
         configs = split(link, "|");
         if(configs.size() != 4)
@@ -708,15 +727,22 @@ void explodeHTTPSub(std::string link, const std::string &custom_port, nodeInfo &
         password = configs[1];
         server = configs[2];
         port = configs[3];
+        */
+        if(regGetMatch(link, "(.*?):(.*?)@(.*):(.*)", 5, NULL, &username, &password, &server, &port))
+            return;
     }
     else
     {
+        /*
         link = regReplace(link, "(.*):(.*)", "$1|$2");
         configs = split(link, "|");
         if(configs.size() != 2)
             return;
         server = configs[1];
         port = configs[2];
+        */
+        if(regGetMatch(link, "(.*):(.*)", 3, NULL, &server, &port))
+            return;
     }
 
     if(group.empty())
@@ -753,6 +779,7 @@ void explodeTrojan(std::string trojan, const std::string &custom_port, nodeInfo
         trojan.erase(pos);
     }
 
+    /*
     trojan = regReplace(trojan, "(.*?)@(.*):(.*)", "$1|$2|$3");
     vArray = split(trojan, "|");
     if(vArray.size() != 3)
@@ -761,6 +788,11 @@ void explodeTrojan(std::string trojan, const std::string &custom_port, nodeInfo
     psk = vArray[0];
     server = vArray[1];
     port = custom_port.empty() ? vArray[2] : custom_port;
+    */
+    if(regGetMatch(trojan, "(.*?)@(.*):(.*)", 4, NULL, &psk, &server, &port))
+        return;
+    if(custom_port.size())
+        port = custom_port;
 
     host = getUrlArg(addition, "peer");
 
@@ -1148,6 +1180,7 @@ void explodeShadowrocket(std::string rocket, const std::string &custom_port, nod
     addition = rocket.substr(rocket.find("?") + 1);
     rocket = rocket.substr(0, rocket.find("?"));
 
+    /*
     userinfo = split(regReplace(urlsafe_base64_decode(rocket), "(.*?):(.*?)@(.*):(.*)", "$1,$2,$3,$4"), ",");
     if(userinfo.size() != 4) // broken link
         return;
@@ -1155,6 +1188,11 @@ void explodeShadowrocket(std::string rocket, const std::string &custom_port, nod
     id = userinfo[1];
     add = userinfo[2];
     port = custom_port.size() ? custom_port : userinfo[3];
+    */
+    if(regGetMatch(urlsafe_base64_decode(rocket), "(.*?):(.*)@(.*):(.*)", 5, NULL, &cipher, &id, &add, &port))
+        return;
+    if(custom_port.size())
+        port = custom_port;
     remarks = UrlDecode(getUrlArg(addition, "remark"));
     obfs = getUrlArg(addition, "obfs");
     if(obfs.size())
@@ -1208,20 +1246,21 @@ void explodeKitsunebi(std::string kit, const std::string &custom_port, nodeInfo
     addition = kit.substr(pos + 1);
     kit = kit.substr(0, pos);
 
+    /*
     userinfo = split(regReplace(kit, "(.*?)@(.*):(.*)", "$1,$2,$3"), ",");
     if(userinfo.size() != 3)
         return;
     id = userinfo[0];
     add = userinfo[1];
     pos = userinfo[2].find("/");
-    if(pos != userinfo[2].npos)
+    */
+    if(regGetMatch(kit, "(.*?)@(.*):(.*)", 4, NULL, &id, &add, &port))
+        return;
+    pos = port.find("/");
+    if(pos != port.npos)
     {
-        port = userinfo[2].substr(0, pos);
-        path = userinfo[2].substr(pos);
-    }
-    else
-    {
-        port = userinfo[2];
+        path = port.substr(pos);
+        port.erase(pos);
     }
     if(custom_port.size())
         port = custom_port;
@@ -1275,16 +1314,24 @@ bool explodeSurge(std::string surge, const std::string &custom_port, std::vector
         std::string plugin, pluginopts, pluginopts_mode, pluginopts_host = "cloudfront.net", mod_url, mod_md5; //ss
         std::string id, net, tls, host, edge, path; //v2
         std::string protocol, protoparam; //ssr
-        std::string itemName, itemVal;
+        std::string itemName, itemVal, config;
         std::vector<std::string> configs, vArray, headers, header;
         tribool udp, tfo, scv;
 
+        /*
         remarks = regReplace(x.second, proxystr, "$1");
         configs = split(regReplace(x.second, proxystr, "$2"), ",");
-        if(configs.size() < 2 || configs[0] == "direct")
+        */
+        regGetMatch(x.second, proxystr, 3, NULL, &remarks, &config);
+        configs = split(config, ",");
+        if(configs.size() < 2)
             continue;
         switch(hash_(configs[0]))
         {
+        case "direct"_hash:
+        case "reject"_hash:
+        case "reject-tinygif"_hash:
+            continue;
         case "custom"_hash: //surge 2 style custom proxy
             //remove module detection to speed up parsing and compatible with broken module
             /*
@@ -2132,11 +2179,11 @@ time_t dateStringToTimestamp(std::string date)
 
 bool getSubInfoFromHeader(std::string &header, std::string &result)
 {
-    std::string pattern = R"((?:[\s\S]*?)^(?i:Subscription-UserInfo): (.*?)\s$(?:[\s\S]*))", retStr;
+    std::string pattern = R"(^(?i:Subscription-UserInfo): (.*?)\s*?$)", retStr;
     if(regFind(header, pattern))
     {
-        retStr = regReplace(header, pattern, "$1");
-        if(retStr != header)
+        regGetMatch(header, pattern, 2, NULL, &retStr);
+        if(retStr.size())
         {
             result = retStr;
             return true;
diff --git a/src/subexport.cpp b/src/subexport.cpp
index b690123..7a05388 100644
--- a/src/subexport.cpp
+++ b/src/subexport.cpp
@@ -405,6 +405,7 @@ bool matchRange(std::string &range, int target)
 {
     string_array vArray = split(range, ",");
     bool match = false;
+    std::string range_begin_str, range_end_str;
     int range_begin = 0, range_end = 0;
     const std::string reg_num = "-?\\d+", reg_range = "(\\d+)-(\\d+)", reg_not = "\\!(\\d+)", reg_not_range = "\\!(\\d+)-(\\d+)", reg_less = "(\\d+)-", reg_more = "(\\d+)\\+";
     for(std::string &x : vArray)
@@ -416,8 +417,13 @@ bool matchRange(std::string &range, int target)
         }
         else if(regMatch(x, reg_range))
         {
+            /*
             range_begin = to_int(regReplace(x, reg_range, "$1"), INT_MAX);
             range_end = to_int(regReplace(x, reg_range, "$2"), INT_MIN);
+            */
+            regGetMatch(x, reg_range, 3, NULL, &range_begin_str, &range_end_str);
+            range_begin = to_int(range_begin_str, INT_MAX);
+            range_end = to_int(range_end_str, INT_MIN);
             if(target >= range_begin && target <= range_end)
                 match = true;
         }
@@ -428,8 +434,13 @@ bool matchRange(std::string &range, int target)
         }
         else if(regMatch(x, reg_not_range))
         {
+            /*
             range_begin = to_int(regReplace(x, reg_range, "$1"), INT_MAX);
             range_end = to_int(regReplace(x, reg_range, "$2"), INT_MIN);
+            */
+            regGetMatch(x, reg_range, 3, NULL, &range_begin_str, &range_end_str);
+            range_begin = to_int(range_begin_str, INT_MAX);
+            range_end = to_int(range_end_str, INT_MIN);
             if(target >= range_begin && target <= range_end)
                 match = false;
         }