diff --git a/README.md b/README.md
index d32aa32bd2dba1daf6aa22ab6d8550c0fdfc778b..f6062cd8c7e81b5dfece9723212fcf8ce31871cb 100644
--- a/README.md
+++ b/README.md
@@ -497,3 +497,4 @@ Donate money by [paypal](https://www.paypal.me/fatedier) to my account **fatedie
 * [Manfred Touron](https://github.com/moul)
 * [xuebing1110](https://github.com/xuebing1110)
 * [Anbitioner](https://github.com/bingtianbaihua)
+* [LitleCarl](https://github.com/LitleCarl)
diff --git a/README_zh.md b/README_zh.md
index 279e491f77208323d0b2ead368833ebbb7c4507f..95f9381fbdec14c9153a179541d13e66773ce26a 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -516,3 +516,4 @@ frp 交流群：606194980 (QQ 群号)
 * [Manfred Touron](https://github.com/moul)
 * [xuebing1110](https://github.com/xuebing1110)
 * [Anbitioner](https://github.com/bingtianbaihua)
+* [LitleCarl](https://github.com/LitleCarl)
diff --git a/src/cmd/frps/control.go b/src/cmd/frps/control.go
index a6cd6a3fe2d7ce5f8075b35cee87d1924008f86a..d848ccd38577ca0ba9007ab287ffe118ffca95a6 100644
--- a/src/cmd/frps/control.go
+++ b/src/cmd/frps/control.go
@@ -268,6 +268,20 @@ func doLogin(req *msg.ControlReq, c *conn.Conn) (ret int64, info string, s *serv
 						return
 					}
 				}
+
+				if s.SubDomain != "" {
+					if strings.Contains(s.SubDomain, ".") || strings.Contains(s.SubDomain, "*") {
+						info = fmt.Sprintf("ProxyName [%s], '.' and '*' is not supported in subdomain", req.ProxyName)
+						log.Warn(info)
+						return
+					}
+					if server.SubDomainHost == "" {
+						info = fmt.Sprintf("ProxyName [%s], subdomain is not supported because this feature is not enabled by remote server", req.ProxyName)
+						log.Warn(info)
+						return
+					}
+					s.SubDomain = s.SubDomain + "." + server.SubDomainHost
+				}
 			}
 			err := server.CreateProxy(s)
 			if err != nil {
@@ -297,20 +311,6 @@ func doLogin(req *msg.ControlReq, c *conn.Conn) (ret int64, info string, s *serv
 		s.HttpUserName = req.HttpUserName
 		s.HttpPassWord = req.HttpPassWord
 
-		// package URL
-		if req.SubDomain != "" {
-			if strings.Contains(req.SubDomain, ".") || strings.Contains(req.SubDomain, "*") {
-				info = fmt.Sprintf("ProxyName [%s], '.' or '*' is not supported in subdomain", req.ProxyName)
-				log.Warn(info)
-				return
-			}
-			if server.SubDomainHost == "" {
-				info = fmt.Sprintf("ProxyName [%s], subdomain in not supported because this feature is not enabled by remote server", req.ProxyName)
-				log.Warn(info)
-				return
-			}
-			s.SubDomain = req.SubDomain + "." + server.SubDomainHost
-		}
 		if req.PoolCount > server.MaxPoolCount {
 			s.PoolCount = server.MaxPoolCount
 		} else if req.PoolCount < 0 {
diff --git a/src/models/client/config.go b/src/models/client/config.go
index d04657b85f278fec9ec435a5f6bec9d8bcb119ea..d669d76490050e3d9561336efe672dea755fd8a3 100644
--- a/src/models/client/config.go
+++ b/src/models/client/config.go
@@ -243,44 +243,48 @@ func LoadConf(confFile string) (err error) {
 					}
 				} else if proxyClient.Type == "http" {
 					// custom_domains
-					domainStr, ok := section["custom_domains"]
+					tmpStr, ok = section["custom_domains"]
 					if ok {
-						proxyClient.CustomDomains = strings.Split(domainStr, ",")
-						if len(proxyClient.CustomDomains) == 0 {
-							ok = false
-						} else {
-							for i, domain := range proxyClient.CustomDomains {
-								proxyClient.CustomDomains[i] = strings.ToLower(strings.TrimSpace(domain))
-							}
+						proxyClient.CustomDomains = strings.Split(tmpStr, ",")
+						for i, domain := range proxyClient.CustomDomains {
+							proxyClient.CustomDomains[i] = strings.ToLower(strings.TrimSpace(domain))
 						}
 					}
 
-					if !ok && proxyClient.SubDomain == "" {
+					// subdomain
+					tmpStr, ok = section["subdomain"]
+					if ok {
+						proxyClient.SubDomain = tmpStr
+					}
+
+					if len(proxyClient.CustomDomains) == 0 && proxyClient.SubDomain == "" {
 						return fmt.Errorf("Parse conf error: proxy [%s] custom_domains and subdomain should set at least one of them when type is http", proxyClient.Name)
 					}
 
 					// locations
-					locations, ok := section["locations"]
+					tmpStr, ok = section["locations"]
 					if ok {
-						proxyClient.Locations = strings.Split(locations, ",")
+						proxyClient.Locations = strings.Split(tmpStr, ",")
 					} else {
 						proxyClient.Locations = []string{""}
 					}
 				} else if proxyClient.Type == "https" {
 					// custom_domains
-					domainStr, ok := section["custom_domains"]
+					tmpStr, ok = section["custom_domains"]
 					if ok {
-						proxyClient.CustomDomains = strings.Split(domainStr, ",")
-						if len(proxyClient.CustomDomains) == 0 {
-							ok = false
-						} else {
-							for i, domain := range proxyClient.CustomDomains {
-								proxyClient.CustomDomains[i] = strings.ToLower(strings.TrimSpace(domain))
-							}
+						proxyClient.CustomDomains = strings.Split(tmpStr, ",")
+						for i, domain := range proxyClient.CustomDomains {
+							proxyClient.CustomDomains[i] = strings.ToLower(strings.TrimSpace(domain))
 						}
 					}
 
-					if !ok && proxyClient.SubDomain == "" {
+					// subdomain
+					tmpStr, ok = section["subdomain"]
+					if ok {
+						proxyClient.SubDomain = tmpStr
+					}
+
+					if len(proxyClient.CustomDomains) == 0 && proxyClient.SubDomain == "" {
 						return fmt.Errorf("Parse conf error: proxy [%s] custom_domains and subdomain should set at least one of them when type is https", proxyClient.Name)
 					}
 				}
diff --git a/src/models/server/config.go b/src/models/server/config.go
index e52d96c481435234437fe61bd86cc4504af4c684..048e5659a146d2648951517f1a01bcc3c41e529a 100644
--- a/src/models/server/config.go
+++ b/src/models/server/config.go
@@ -300,9 +300,6 @@ func loadProxyConf(confFile string) (proxyServers map[string]*ProxyServer, err e
 				domainStr, ok := section["custom_domains"]
 				if ok {
 					proxyServer.CustomDomains = strings.Split(domainStr, ",")
-					if len(proxyServer.CustomDomains) == 0 {
-						return proxyServers, fmt.Errorf("Parse conf error: proxy [%s] custom_domains must be set when type is http", proxyServer.Name)
-					}
 					for i, domain := range proxyServer.CustomDomains {
 						domain = strings.ToLower(strings.TrimSpace(domain))
 						// custom domain should not belong to subdomain_host
@@ -311,8 +308,23 @@ func loadProxyConf(confFile string) (proxyServers map[string]*ProxyServer, err e
 						}
 						proxyServer.CustomDomains[i] = domain
 					}
-				} else {
-					return proxyServers, fmt.Errorf("Parse conf error: proxy [%s] custom_domains must be set when type is http", proxyServer.Name)
+				}
+
+				// subdomain
+				subdomainStr, ok := section["subdomain"]
+				if ok {
+					if strings.Contains(subdomainStr, ".") || strings.Contains(subdomainStr, "*") {
+						return proxyServers, fmt.Errorf("Parse conf error: proxy [%s] '.' and '*' is not supported in subdomain", proxyServer.Name)
+					}
+
+					if SubDomainHost == "" {
+						return proxyServers, fmt.Errorf("Parse conf error: proxy [%s] subdomain is not supported because subdomain_host is empty", proxyServer.Name)
+					}
+					proxyServer.SubDomain = subdomainStr + "." + SubDomainHost
+				}
+
+				if len(proxyServer.CustomDomains) == 0 && proxyServer.SubDomain == "" {
+					return proxyServers, fmt.Errorf("Parse conf error: proxy [%s] custom_domains and subdomain should set at least one of them when type is http", proxyServer.Name)
 				}
 
 				// locations
@@ -329,9 +341,6 @@ func loadProxyConf(confFile string) (proxyServers map[string]*ProxyServer, err e
 				domainStr, ok := section["custom_domains"]
 				if ok {
 					proxyServer.CustomDomains = strings.Split(domainStr, ",")
-					if len(proxyServer.CustomDomains) == 0 {
-						return proxyServers, fmt.Errorf("Parse conf error: proxy [%s] custom_domains must be set when type is https", proxyServer.Name)
-					}
 					for i, domain := range proxyServer.CustomDomains {
 						domain = strings.ToLower(strings.TrimSpace(domain))
 						if SubDomainHost != "" && strings.Contains(domain, SubDomainHost) {
@@ -339,8 +348,23 @@ func loadProxyConf(confFile string) (proxyServers map[string]*ProxyServer, err e
 						}
 						proxyServer.CustomDomains[i] = domain
 					}
-				} else {
-					return proxyServers, fmt.Errorf("Parse conf error: proxy [%s] custom_domains must be set when type is https", proxyServer.Name)
+				}
+
+				// subdomain
+				subdomainStr, ok := section["subdomain"]
+				if ok {
+					if strings.Contains(subdomainStr, ".") || strings.Contains(subdomainStr, "*") {
+						return proxyServers, fmt.Errorf("Parse conf error: proxy [%s] '.' and '*' is not supported in subdomain", proxyServer.Name)
+					}
+
+					if SubDomainHost == "" {
+						return proxyServers, fmt.Errorf("Parse conf error: proxy [%s] subdomain is not supported because subdomain_host is empty", proxyServer.Name)
+					}
+					proxyServer.SubDomain = subdomainStr + "." + SubDomainHost
+				}
+
+				if len(proxyServer.CustomDomains) == 0 && proxyServer.SubDomain == "" {
+					return proxyServers, fmt.Errorf("Parse conf error: proxy [%s] custom_domains and subdomain should set at least one of them when type is https", proxyServer.Name)
 				}
 			}
 			proxyServers[proxyServer.Name] = proxyServer
diff --git a/src/models/server/server.go b/src/models/server/server.go
index 27590bff956ff0524fb6d0796c304ac915d12246..364e6241d6619f1a8aa5261ebc4784e07d5de044 100644
--- a/src/models/server/server.go
+++ b/src/models/server/server.go
@@ -79,6 +79,7 @@ func NewProxyServerFromCtlMsg(req *msg.ControlReq) (p *ProxyServer) {
 		p.ListenPort = VhostHttpsPort
 	}
 	p.CustomDomains = req.CustomDomains
+	p.SubDomain = req.SubDomain
 	p.Locations = req.Locations
 	p.HostHeaderRewrite = req.HostHeaderRewrite
 	p.HttpUserName = req.HttpUserName
@@ -285,7 +286,7 @@ func (p *ProxyServer) Close() {
 	p.Release()
 
 	// if the proxy created by PrivilegeMode, delete it when closed
-	if p.PrivilegeMode && oldStatus != consts.Closed {
+	if p.PrivilegeMode && oldStatus == consts.Working {
 		// NOTE: this will take the global ProxyServerMap's lock
 		// if we only want to release resources, use Release() instead
 		DeleteProxy(p.Name)
@@ -444,6 +445,12 @@ func (p *ProxyServer) getWorkConn() (workConn *conn.Conn, err error) {
 }
 
 func (p *ProxyServer) connectionPoolManager(closeCh <-chan struct{}) {
+	defer func() {
+		if r := recover(); r != nil {
+			log.Warn("ProxyName [%s], connectionPoolManager panic %v", p.Name, r)
+		}
+	}()
+
 	for {
 		// check if we need more work connections and send messages to frpc to get more
 		time.Sleep(time.Duration(2) * time.Second)
diff --git a/src/utils/version/version.go b/src/utils/version/version.go
index 97b1dc1163e29e8cca8959e7beccebf6ab9e450b..18ba4acfff2943282793a1e6bae2a5be96a0b329 100644
--- a/src/utils/version/version.go
+++ b/src/utils/version/version.go
@@ -19,7 +19,7 @@ import (
 	"strings"
 )
 
-var version string = "0.9.2"
+var version string = "0.9.3"
 
 func Full() string {
 	return version