frps: support custom_404_page

models/config/server_common.go

@@ -69,6 +69,7 @@ type ServerCommonConf struct {
 	Token         string `json:"token"`
 	SubDomainHost string `json:"subdomain_host"`
 	TcpMux        bool   `json:"tcp_mux"`
+	Custom404Page string `json:"custom_404_page"`
 
 	AllowPorts        map[int]struct{}
 	MaxPoolCount      int64 `json:"max_pool_count"`
@@ -104,6 +105,7 @@ func GetDefaultServerConf() *ServerCommonConf {
 		MaxPortsPerClient: 0,
 		HeartBeatTimeout:  90,
 		UserConnTimeout:   10,
+		Custom404Page:     "",
 	}
 }
 
@@ -293,6 +295,10 @@ func UnmarshalServerConfFromIni(defaultCfg *ServerCommonConf, content string) (c
 		cfg.TcpMux = true
 	}
 
+	if tmpStr, ok = conf.Get("common", "custom_404_page"); ok {
+		cfg.Custom404Page = tmpStr
+	}
+
 	if tmpStr, ok = conf.Get("common", "heartbeat_timeout"); ok {
 		v, errRet := strconv.ParseInt(tmpStr, 10, 64)
 		if errRet != nil {