frpc: add status command

client/admin.go

@@ -39,6 +39,7 @@ func (svr *Service) RunAdminServer(addr string, port int64) (err error) {
 
 	// api, see dashboard_api.go
 	router.GET("/api/reload", frpNet.HttprouterBasicAuth(svr.apiReload, user, passwd))
+	router.GET("/api/status", frpNet.HttprouterBasicAuth(svr.apiStatus, user, passwd))
 
 	address := fmt.Sprintf("%s:%d", addr, port)
 	server := &http.Server{

client/admin_api.go

@@ -16,7 +16,10 @@ package client
 
 import (
 	"encoding/json"
+	"fmt"
 	"net/http"
+	"sort"
+	"strings"
 
 	"github.com/julienschmidt/httprouter"
 	ini "github.com/vaughan0/go-ini"
@@ -72,7 +75,127 @@ func (svr *Service) apiReload(w http.ResponseWriter, r *http.Request, _ httprout
 		return
 	}
 
-	svr.ctl.reloadConf(pxyCfgs, visitorCfgs)
+	err = svr.ctl.reloadConf(pxyCfgs, visitorCfgs)
+	if err != nil {
+		res.Code = 4
+		res.Msg = err.Error()
+		log.Error("reload frpc proxy config error: %v", err)
+		return
+	}
 	log.Info("success reload conf")
 	return
 }
+
+type StatusResp struct {
+	Tcp   []ProxyStatusResp `json:"tcp"`
+	Udp   []ProxyStatusResp `json:"udp"`
+	Http  []ProxyStatusResp `json:"http"`
+	Https []ProxyStatusResp `json:"https"`
+	Stcp  []ProxyStatusResp `json:"stcp"`
+	Xtcp  []ProxyStatusResp `json:"xtcp"`
+}
+
+type ProxyStatusResp struct {
+	Name       string `json:"name"`
+	Type       string `json:"type"`
+	Status     string `json:"status"`
+	Err        string `json:"err"`
+	LocalAddr  string `json:"local_addr"`
+	Plugin     string `json:"plugin"`
+	RemoteAddr string `json:"remote_addr"`
+}
+
+type ByProxyStatusResp []ProxyStatusResp
+
+func (a ByProxyStatusResp) Len() int           { return len(a) }
+func (a ByProxyStatusResp) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a ByProxyStatusResp) Less(i, j int) bool { return strings.Compare(a[i].Name, a[j].Name) < 0 }
+
+func NewProxyStatusResp(status *ProxyStatus) ProxyStatusResp {
+	psr := ProxyStatusResp{
+		Name:   status.Name,
+		Type:   status.Type,
+		Status: status.Status,
+		Err:    status.Err,
+	}
+	switch cfg := status.Cfg.(type) {
+	case *config.TcpProxyConf:
+		if cfg.LocalPort != 0 {
+			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIp, cfg.LocalPort)
+		}
+		psr.Plugin = cfg.Plugin
+		psr.RemoteAddr = fmt.Sprintf(":%d", cfg.RemotePort)
+	case *config.UdpProxyConf:
+		if cfg.LocalPort != 0 {
+			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIp, cfg.LocalPort)
+		}
+		psr.RemoteAddr = fmt.Sprintf(":%d", cfg.RemotePort)
+	case *config.HttpProxyConf:
+		if cfg.LocalPort != 0 {
+			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIp, cfg.LocalPort)
+		}
+		psr.Plugin = cfg.Plugin
+	case *config.HttpsProxyConf:
+		if cfg.LocalPort != 0 {
+			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIp, cfg.LocalPort)
+		}
+		psr.Plugin = cfg.Plugin
+	case *config.StcpProxyConf:
+		if cfg.LocalPort != 0 {
+			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIp, cfg.LocalPort)
+		}
+		psr.Plugin = cfg.Plugin
+	case *config.XtcpProxyConf:
+		if cfg.LocalPort != 0 {
+			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIp, cfg.LocalPort)
+		}
+		psr.Plugin = cfg.Plugin
+	}
+	return psr
+}
+
+// api/status
+func (svr *Service) apiStatus(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
+	var (
+		buf []byte
+		res StatusResp
+	)
+	res.Tcp = make([]ProxyStatusResp, 0)
+	res.Udp = make([]ProxyStatusResp, 0)
+	res.Http = make([]ProxyStatusResp, 0)
+	res.Https = make([]ProxyStatusResp, 0)
+	res.Stcp = make([]ProxyStatusResp, 0)
+	res.Xtcp = make([]ProxyStatusResp, 0)
+	defer func() {
+		log.Info("Http response [/api/status]")
+		buf, _ = json.Marshal(&res)
+		w.Write(buf)
+	}()
+
+	log.Info("Http request: [/api/status]")
+
+	ps := svr.ctl.pm.GetAllProxyStatus()
+	for _, status := range ps {
+		switch status.Type {
+		case "tcp":
+			res.Tcp = append(res.Tcp, NewProxyStatusResp(status))
+		case "udp":
+			res.Udp = append(res.Udp, NewProxyStatusResp(status))
+		case "http":
+			res.Http = append(res.Http, NewProxyStatusResp(status))
+		case "https":
+			res.Https = append(res.Https, NewProxyStatusResp(status))
+		case "stcp":
+			res.Stcp = append(res.Stcp, NewProxyStatusResp(status))
+		case "xtcp":
+			res.Xtcp = append(res.Xtcp, NewProxyStatusResp(status))
+		}
+	}
+	sort.Sort(ByProxyStatusResp(res.Tcp))
+	sort.Sort(ByProxyStatusResp(res.Udp))
+	sort.Sort(ByProxyStatusResp(res.Http))
+	sort.Sort(ByProxyStatusResp(res.Https))
+	sort.Sort(ByProxyStatusResp(res.Stcp))
+	sort.Sort(ByProxyStatusResp(res.Xtcp))
+	return
+}

client/control.go

@@ -24,9 +24,9 @@ import (
 	"github.com/fatedier/frp/models/config"
 	"github.com/fatedier/frp/models/msg"
 	"github.com/fatedier/frp/utils/crypto"
-	"github.com/fatedier/frp/utils/errors"
 	"github.com/fatedier/frp/utils/log"
 	frpNet "github.com/fatedier/frp/utils/net"
+	"github.com/fatedier/frp/utils/shutdown"
 	"github.com/fatedier/frp/utils/util"
 	"github.com/fatedier/frp/utils/version"
 	"github.com/xtaci/smux"
@@ -40,20 +40,10 @@ type Control struct {
 	// frpc service
 	svr *Service
 
-	// login message to server
+	// login message to server, only used
 	loginMsg *msg.Login
 
-	// proxy configures
-	pxyCfgs map[string]config.ProxyConf
-
-	// proxies
-	proxies map[string]Proxy
-
-	// visitor configures
-	visitorCfgs map[string]config.ProxyConf
-
-	// visitors
-	visitors map[string]Visitor
+	pm *ProxyManager
 
 	// control connection
 	conn frpNet.Conn
@@ -79,6 +69,10 @@ type Control struct {
 	// last time got the Pong message
 	lastPong time.Time
 
+	readerShutdown     *shutdown.Shutdown
+	writerShutdown     *shutdown.Shutdown
+	msgHandlerShutdown *shutdown.Shutdown
+
 	mu sync.RWMutex
 
 	log.Logger
@@ -92,28 +86,22 @@ func NewControl(svr *Service, pxyCfgs map[string]config.ProxyConf, visitorCfgs m
 		User:      config.ClientCommonCfg.User,
 		Version:   version.Full(),
 	}
-	return &Control{
+	ctl := &Control{
 		svr:                svr,
 		loginMsg:           loginMsg,
-		pxyCfgs:     pxyCfgs,
-		visitorCfgs: visitorCfgs,
-		proxies:     make(map[string]Proxy),
-		visitors:    make(map[string]Visitor),
 		sendCh:             make(chan msg.Message, 10),
 		readCh:             make(chan msg.Message, 10),
 		closedCh:           make(chan int),
+		readerShutdown:     shutdown.New(),
+		writerShutdown:     shutdown.New(),
+		msgHandlerShutdown: shutdown.New(),
 		Logger:             log.NewPrefixLogger(""),
 	}
+	ctl.pm = NewProxyManager(ctl, ctl.sendCh, "")
+	ctl.pm.Reload(pxyCfgs, visitorCfgs)
+	return ctl
 }
 
-// 1. login
-// 2. start reader() writer() manager()
-// 3. connection closed
-// 4. In reader(): close closedCh and exit, controler() get it
-// 5. In controler(): close readCh and sendCh, manager() and writer() will exit
-// 6. In controler(): ini readCh, sendCh, closedCh
-// 7. In controler(): start new reader(), writer(), manager()
-// controler() will keep running
 func (ctl *Control) Run() (err error) {
 	for {
 		err = ctl.login()
@@ -125,47 +113,29 @@ func (ctl *Control) Run() (err error) {
 			if config.ClientCommonCfg.LoginFailExit {
 				return
 			} else {
-				time.Sleep(30 * time.Second)
+				time.Sleep(10 * time.Second)
 			}
 		} else {
 			break
 		}
 	}
 
-	go ctl.controler()
-	go ctl.manager()
-	go ctl.writer()
-	go ctl.reader()
+	go ctl.worker()
 
-	// start all local visitors
-	for _, cfg := range ctl.visitorCfgs {
-		visitor := NewVisitor(ctl, cfg)
-		err = visitor.Run()
-		if err != nil {
-			visitor.Warn("start error: %v", err)
-			continue
-		}
-		ctl.visitors[cfg.GetName()] = visitor
-		visitor.Info("start visitor success")
-	}
-
-	// send NewProxy message for all configured proxies
-	for _, cfg := range ctl.pxyCfgs {
-		var newProxyMsg msg.NewProxy
-		cfg.UnMarshalToMsg(&newProxyMsg)
-		ctl.sendCh <- &newProxyMsg
-	}
+	// start all local visitors and send NewProxy message for all configured proxies
+	ctl.pm.Reset(ctl.sendCh, ctl.runId)
+	ctl.pm.CheckAndStartProxy()
 	return nil
 }
 
-func (ctl *Control) NewWorkConn() {
+func (ctl *Control) HandleReqWorkConn(inMsg *msg.ReqWorkConn) {
 	workConn, err := ctl.connectServer()
 	if err != nil {
 		return
 	}
 
 	m := &msg.NewWorkConn{
-		RunId: ctl.getRunId(),
+		RunId: ctl.runId,
 	}
 	if err = msg.WriteMsg(workConn, m); err != nil {
 		ctl.Warn("work connection write to server error: %v", err)
@@ -182,33 +152,26 @@ func (ctl *Control) NewWorkConn() {
 	workConn.AddLogPrefix(startMsg.ProxyName)
 
 	// dispatch this work connection to related proxy
-	pxy, ok := ctl.getProxy(startMsg.ProxyName)
-	if ok {
-		workConn.Debug("start a new work connection, localAddr: %s remoteAddr: %s", workConn.LocalAddr().String(), workConn.RemoteAddr().String())
-		go pxy.InWorkConn(workConn)
+	ctl.pm.HandleWorkConn(startMsg.ProxyName, workConn)
+}
+
+func (ctl *Control) HandleNewProxyResp(inMsg *msg.NewProxyResp) {
+	// Server will return NewProxyResp message to each NewProxy message.
+	// Start a new proxy handler if no error got
+	err := ctl.pm.StartProxy(inMsg.ProxyName, inMsg.Error)
+	if err != nil {
+		ctl.Warn("[%s] start error: %v", inMsg.ProxyName, err)
 	} else {
-		workConn.Close()
+		ctl.Info("[%s] start proxy success", inMsg.ProxyName)
 	}
 }
 
 func (ctl *Control) Close() error {
 	ctl.mu.Lock()
+	defer ctl.mu.Unlock()
 	ctl.exit = true
-	err := errors.PanicToError(func() {
-		for name, _ := range ctl.proxies {
-			ctl.sendCh <- &msg.CloseProxy{
-				ProxyName: name,
-			}
-		}
-	})
-	ctl.mu.Unlock()
-	return err
-}
-
-func (ctl *Control) init() {
-	ctl.sendCh = make(chan msg.Message, 10)
-	ctl.readCh = make(chan msg.Message, 10)
-	ctl.closedCh = make(chan int)
+	ctl.pm.CloseProxies()
+	return nil
 }
 
 // login send a login message to server and wait for a loginResp message.
@@ -249,7 +212,7 @@ func (ctl *Control) login() (err error) {
 	now := time.Now().Unix()
 	ctl.loginMsg.PrivilegeKey = util.GetAuthKey(config.ClientCommonCfg.PrivilegeToken, now)
 	ctl.loginMsg.Timestamp = now
-	ctl.loginMsg.RunId = ctl.getRunId()
+	ctl.loginMsg.RunId = ctl.runId
 
 	if err = msg.WriteMsg(conn, ctl.loginMsg); err != nil {
 		return err
@@ -270,16 +233,11 @@ func (ctl *Control) login() (err error) {
 
 	ctl.conn = conn
 	// update runId got from server
-	ctl.setRunId(loginRespMsg.RunId)
+	ctl.runId = loginRespMsg.RunId
 	config.ClientCommonCfg.ServerUdpPort = loginRespMsg.ServerUdpPort
 	ctl.ClearLogPrefix()
 	ctl.AddLogPrefix(loginRespMsg.RunId)
 	ctl.Info("login to server success, get run id [%s], server udp port [%d]", loginRespMsg.RunId, loginRespMsg.ServerUdpPort)
-
-	// login success, so we let closedCh available again
-	ctl.closedCh = make(chan int)
-	ctl.lastPong = time.Now()
-
 	return nil
 }
 
@@ -292,7 +250,6 @@ func (ctl *Control) connectServer() (conn frpNet.Conn, err error) {
 			return
 		}
 		conn = frpNet.WrapConn(stream)
-
 	} else {
 		conn, err = frpNet.ConnectServerByHttpProxy(config.ClientCommonCfg.HttpProxy, config.ClientCommonCfg.Protocol,
 			fmt.Sprintf("%s:%d", config.ClientCommonCfg.ServerAddr, config.ClientCommonCfg.ServerPort))
@@ -304,12 +261,14 @@ func (ctl *Control) connectServer() (conn frpNet.Conn, err error) {
 	return
 }
 
+// reader read all messages from frps and send to readCh
 func (ctl *Control) reader() {
 	defer func() {
 		if err := recover(); err != nil {
 			ctl.Error("panic error: %v", err)
 		}
 	}()
+	defer ctl.readerShutdown.Done()
 	defer close(ctl.closedCh)
 
 	encReader := crypto.NewReader(ctl.conn, []byte(config.ClientCommonCfg.PrivilegeToken))
@@ -328,7 +287,9 @@ func (ctl *Control) reader() {
 	}
 }
 
+// writer writes messages got from sendCh to frps
 func (ctl *Control) writer() {
+	defer ctl.writerShutdown.Done()
 	encWriter, err := crypto.NewWriter(ctl.conn, []byte(config.ClientCommonCfg.PrivilegeToken))
 	if err != nil {
 		ctl.conn.Error("crypto new writer error: %v", err)
@@ -348,19 +309,22 @@ func (ctl *Control) writer() {
 	}
 }
 
-// manager handles all channel events and do corresponding process
-func (ctl *Control) manager() {
+// msgHandler handles all channel events and do corresponding operations.
+func (ctl *Control) msgHandler() {
 	defer func() {
 		if err := recover(); err != nil {
 			ctl.Error("panic error: %v", err)
 		}
 	}()
+	defer ctl.msgHandlerShutdown.Done()
 
 	hbSend := time.NewTicker(time.Duration(config.ClientCommonCfg.HeartBeatInterval) * time.Second)
 	defer hbSend.Stop()
 	hbCheck := time.NewTicker(time.Second)
 	defer hbCheck.Stop()
 
+	ctl.lastPong = time.Now()
+
 	for {
 		select {
 		case <-hbSend.C:
@@ -381,35 +345,9 @@ func (ctl *Control) manager() {
 
 			switch m := rawMsg.(type) {
 			case *msg.ReqWorkConn:
-				go ctl.NewWorkConn()
+				go ctl.HandleReqWorkConn(m)
 			case *msg.NewProxyResp:
-				// Server will return NewProxyResp message to each NewProxy message.
-				// Start a new proxy handler if no error got
-				if m.Error != "" {
-					ctl.Warn("[%s] start error: %s", m.ProxyName, m.Error)
-					continue
-				}
-				cfg, ok := ctl.getProxyConf(m.ProxyName)
-				if !ok {
-					// it will never go to this branch now
-					ctl.Warn("[%s] no proxy conf found", m.ProxyName)
-					continue
-				}
-
-				oldPxy, ok := ctl.getProxy(m.ProxyName)
-				if ok {
-					oldPxy.Close()
-				}
-				pxy := NewProxy(ctl, cfg)
-				if err := pxy.Run(); err != nil {
-					ctl.Warn("[%s] proxy start running error: %v", m.ProxyName, err)
-					ctl.sendCh <- &msg.CloseProxy{
-						ProxyName: m.ProxyName,
-					}
-					continue
-				}
-				ctl.addProxy(m.ProxyName, pxy)
-				ctl.Info("[%s] start proxy success", m.ProxyName)
+				ctl.HandleNewProxyResp(m)
 			case *msg.Pong:
 				ctl.lastPong = time.Now()
 				ctl.Debug("receive heartbeat from server")
@@ -419,10 +357,14 @@ func (ctl *Control) manager() {
 }
 
 // controler keep watching closedCh, start a new connection if previous control connection is closed.
-// If controler is notified by closedCh, reader and writer and manager will exit, then recall these functions.
-func (ctl *Control) controler() {
+// If controler is notified by closedCh, reader and writer and handler will exit, then recall these functions.
+func (ctl *Control) worker() {
+	go ctl.msgHandler()
+	go ctl.writer()
+	go ctl.reader()
+
 	var err error
-	maxDelayTime := 30 * time.Second
+	maxDelayTime := 20 * time.Second
 	delayTime := time.Second
 
 	checkInterval := 10 * time.Second
@@ -430,41 +372,20 @@ func (ctl *Control) controler() {
 	for {
 		select {
 		case <-checkProxyTicker.C:
-			// Every 10 seconds, check which proxy registered failed and reregister it to server.
-			ctl.mu.RLock()
-			for _, cfg := range ctl.pxyCfgs {
-				if _, exist := ctl.proxies[cfg.GetName()]; !exist {
-					ctl.Info("try to register proxy [%s]", cfg.GetName())
-					var newProxyMsg msg.NewProxy
-					cfg.UnMarshalToMsg(&newProxyMsg)
-					ctl.sendCh <- &newProxyMsg
-				}
-			}
-
-			for _, cfg := range ctl.visitorCfgs {
-				if _, exist := ctl.visitors[cfg.GetName()]; !exist {
-					ctl.Info("try to start visitor [%s]", cfg.GetName())
-					visitor := NewVisitor(ctl, cfg)
-					err = visitor.Run()
-					if err != nil {
-						visitor.Warn("start error: %v", err)
-						continue
-					}
-					ctl.visitors[cfg.GetName()] = visitor
-					visitor.Info("start visitor success")
-				}
-			}
-			ctl.mu.RUnlock()
+			// every 10 seconds, check which proxy registered failed and reregister it to server
+			ctl.pm.CheckAndStartProxy()
 		case _, ok := <-ctl.closedCh:
 			// we won't get any variable from this channel
 			if !ok {
-				// close related channels
+				// close related channels and wait until other goroutines done
 				close(ctl.readCh)
-				close(ctl.sendCh)
+				ctl.readerShutdown.WaitDone()
+				ctl.msgHandlerShutdown.WaitDone()
 
-				for _, pxy := range ctl.proxies {
-					pxy.Close()
-				}
+				close(ctl.sendCh)
+				ctl.writerShutdown.WaitDone()
+
+				ctl.pm.CloseProxies()
 				// if ctl.exit is true, just exit
 				ctl.mu.RLock()
 				exit := ctl.exit
@@ -473,9 +394,7 @@ func (ctl *Control) controler() {
 					return
 				}
 
-				time.Sleep(time.Second)
-
-				// loop util reconnect to server success
+				// loop util reconnecting to server success
 				for {
 					ctl.Info("try to reconnect to server...")
 					err = ctl.login()
@@ -488,27 +407,27 @@ func (ctl *Control) controler() {
 						}
 						continue
 					}
-					// reconnect success, init the delayTime
+					// reconnect success, init delayTime
 					delayTime = time.Second
 					break
 				}
 
 				// init related channels and variables
-				ctl.init()
+				ctl.sendCh = make(chan msg.Message, 10)
+				ctl.readCh = make(chan msg.Message, 10)
+				ctl.closedCh = make(chan int)
+				ctl.readerShutdown = shutdown.New()
+				ctl.writerShutdown = shutdown.New()
+				ctl.msgHandlerShutdown = shutdown.New()
+				ctl.pm.Reset(ctl.sendCh, ctl.runId)
 
 				// previous work goroutines should be closed and start them here
-				go ctl.manager()
+				go ctl.msgHandler()
 				go ctl.writer()
 				go ctl.reader()
 
-				// send NewProxy message for all configured proxies
-				ctl.mu.RLock()
-				for _, cfg := range ctl.pxyCfgs {
-					var newProxyMsg msg.NewProxy
-					cfg.UnMarshalToMsg(&newProxyMsg)
-					ctl.sendCh <- &newProxyMsg
-				}
-				ctl.mu.RUnlock()
+				// start all configured proxies
+				ctl.pm.CheckAndStartProxy()
 
 				checkProxyTicker.Stop()
 				checkProxyTicker = time.NewTicker(checkInterval)
@@ -517,106 +436,7 @@ func (ctl *Control) controler() {
 	}
 }
 
-func (ctl *Control) setRunId(runId string) {
-	ctl.mu.Lock()
-	defer ctl.mu.Unlock()
-	ctl.runId = runId
-}
-
-func (ctl *Control) getRunId() string {
-	ctl.mu.RLock()
-	defer ctl.mu.RUnlock()
-	return ctl.runId
-}
-
-func (ctl *Control) getProxy(name string) (pxy Proxy, ok bool) {
-	ctl.mu.RLock()
-	defer ctl.mu.RUnlock()
-	pxy, ok = ctl.proxies[name]
-	return
-}
-
-func (ctl *Control) addProxy(name string, pxy Proxy) {
-	ctl.mu.Lock()
-	defer ctl.mu.Unlock()
-	ctl.proxies[name] = pxy
-}
-
-func (ctl *Control) getProxyConf(name string) (conf config.ProxyConf, ok bool) {
-	ctl.mu.RLock()
-	defer ctl.mu.RUnlock()
-	conf, ok = ctl.pxyCfgs[name]
-	return
-}
-
-func (ctl *Control) reloadConf(pxyCfgs map[string]config.ProxyConf, visitorCfgs map[string]config.ProxyConf) {
-	ctl.mu.Lock()
-	defer ctl.mu.Unlock()
-
-	removedPxyNames := make([]string, 0)
-	for name, oldCfg := range ctl.pxyCfgs {
-		del := false
-		cfg, ok := pxyCfgs[name]
-		if !ok {
-			del = true
-		} else {
-			if !oldCfg.Compare(cfg) {
-				del = true
-			}
-		}
-
-		if del {
-			removedPxyNames = append(removedPxyNames, name)
-			delete(ctl.pxyCfgs, name)
-			if pxy, ok := ctl.proxies[name]; ok {
-				pxy.Close()
-			}
-			delete(ctl.proxies, name)
-			ctl.sendCh <- &msg.CloseProxy{
-				ProxyName: name,
-			}
-		}
-	}
-	ctl.Info("proxy removed: %v", removedPxyNames)
-
-	addedPxyNames := make([]string, 0)
-	for name, cfg := range pxyCfgs {
-		if _, ok := ctl.pxyCfgs[name]; !ok {
-			ctl.pxyCfgs[name] = cfg
-			addedPxyNames = append(addedPxyNames, name)
-		}
-	}
-	ctl.Info("proxy added: %v", addedPxyNames)
-
-	removedVisitorName := make([]string, 0)
-	for name, oldVisitorCfg := range ctl.visitorCfgs {
-		del := false
-		cfg, ok := visitorCfgs[name]
-		if !ok {
-			del = true
-		} else {
-			if !oldVisitorCfg.Compare(cfg) {
-				del = true
-			}
-		}
-
-		if del {
-			removedVisitorName = append(removedVisitorName, name)
-			delete(ctl.visitorCfgs, name)
-			if visitor, ok := ctl.visitors[name]; ok {
-				visitor.Close()
-			}
-			delete(ctl.visitors, name)
-		}
-	}
-	ctl.Info("visitor removed: %v", removedVisitorName)
-
-	addedVisitorName := make([]string, 0)
-	for name, visitorCfg := range visitorCfgs {
-		if _, ok := ctl.visitorCfgs[name]; !ok {
-			ctl.visitorCfgs[name] = visitorCfg
-			addedVisitorName = append(addedVisitorName, name)
-		}
-	}
-	ctl.Info("visitor added: %v", addedVisitorName)
+func (ctl *Control) reloadConf(pxyCfgs map[string]config.ProxyConf, visitorCfgs map[string]config.ProxyConf) error {
+	err := ctl.pm.Reload(pxyCfgs, visitorCfgs)
+	return err
 }

client/proxy.go

@@ -39,13 +39,13 @@ type Proxy interface {
 
 	// InWorkConn accept work connections registered to server.
 	InWorkConn(conn frpNet.Conn)
+
 	Close()
 	log.Logger
 }
 
-func NewProxy(ctl *Control, pxyConf config.ProxyConf) (pxy Proxy) {
+func NewProxy(pxyConf config.ProxyConf) (pxy Proxy) {
 	baseProxy := BaseProxy{
-		ctl:    ctl,
 		Logger: log.NewPrefixLogger(pxyConf.GetName()),
 	}
 	switch cfg := pxyConf.(type) {
@@ -84,7 +84,6 @@ func NewProxy(ctl *Control, pxyConf config.ProxyConf) (pxy Proxy) {
 }
 
 type BaseProxy struct {
-	ctl    *Control
 	closed bool
 	mu     sync.RWMutex
 	log.Logger

client/proxy_manager.go

@@ -0,0 +1,340 @@
+package client
+
+import (
+	"fmt"
+	"sync"
+
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/msg"
+	"github.com/fatedier/frp/utils/errors"
+	"github.com/fatedier/frp/utils/log"
+	frpNet "github.com/fatedier/frp/utils/net"
+)
+
+const (
+	ProxyStatusNew      = "new"
+	ProxyStatusStartErr = "start error"
+	ProxyStatusRunning  = "running"
+	ProxyStatusClosed   = "closed"
+)
+
+type ProxyManager struct {
+	ctl *Control
+
+	proxies map[string]*ProxyWrapper
+
+	visitorCfgs map[string]config.ProxyConf
+	visitors    map[string]Visitor
+
+	sendCh chan (msg.Message)
+
+	closed bool
+	mu     sync.RWMutex
+
+	log.Logger
+}
+
+type ProxyWrapper struct {
+	Name   string
+	Type   string
+	Status string
+	Err    string
+	Cfg    config.ProxyConf
+
+	pxy Proxy
+
+	mu sync.RWMutex
+}
+
+type ProxyStatus struct {
+	Name   string           `json:"name"`
+	Type   string           `json:"type"`
+	Status string           `json:"status"`
+	Err    string           `json:"err"`
+	Cfg    config.ProxyConf `json:"cfg"`
+}
+
+func NewProxyWrapper(cfg config.ProxyConf) *ProxyWrapper {
+	return &ProxyWrapper{
+		Name:   cfg.GetName(),
+		Type:   cfg.GetType(),
+		Status: ProxyStatusNew,
+		Cfg:    cfg,
+		pxy:    nil,
+	}
+}
+
+func (pw *ProxyWrapper) IsRunning() bool {
+	pw.mu.RLock()
+	defer pw.mu.RUnlock()
+	if pw.Status == ProxyStatusRunning {
+		return true
+	} else {
+		return false
+	}
+}
+
+func (pw *ProxyWrapper) GetStatus() *ProxyStatus {
+	pw.mu.RLock()
+	defer pw.mu.RUnlock()
+	ps := &ProxyStatus{
+		Name:   pw.Name,
+		Type:   pw.Type,
+		Status: pw.Status,
+		Err:    pw.Err,
+		Cfg:    pw.Cfg,
+	}
+	return ps
+}
+
+func (pw *ProxyWrapper) Start(serverRespErr string) error {
+	if pw.pxy != nil {
+		pw.pxy.Close()
+		pw.pxy = nil
+	}
+
+	if serverRespErr != "" {
+		pw.mu.Lock()
+		pw.Status = ProxyStatusStartErr
+		pw.Err = serverRespErr
+		pw.mu.Unlock()
+		return fmt.Errorf(serverRespErr)
+	}
+
+	pxy := NewProxy(pw.Cfg)
+	pw.mu.Lock()
+	defer pw.mu.Unlock()
+	if err := pxy.Run(); err != nil {
+		pw.Status = ProxyStatusStartErr
+		pw.Err = err.Error()
+		return err
+	}
+	pw.Status = ProxyStatusRunning
+	pw.Err = ""
+	pw.pxy = pxy
+	return nil
+}
+
+func (pw *ProxyWrapper) InWorkConn(workConn frpNet.Conn) {
+	pw.mu.RLock()
+	pxy := pw.pxy
+	pw.mu.RUnlock()
+	if pxy != nil {
+		workConn.Debug("start a new work connection, localAddr: %s remoteAddr: %s", workConn.LocalAddr().String(), workConn.RemoteAddr().String())
+		go pxy.InWorkConn(workConn)
+	} else {
+		workConn.Close()
+	}
+}
+
+func (pw *ProxyWrapper) Close() {
+	pw.mu.Lock()
+	defer pw.mu.Unlock()
+	if pw.pxy != nil {
+		pw.pxy.Close()
+		pw.pxy = nil
+	}
+	pw.Status = ProxyStatusClosed
+}
+
+func NewProxyManager(ctl *Control, msgSendCh chan (msg.Message), logPrefix string) *ProxyManager {
+	return &ProxyManager{
+		proxies:     make(map[string]*ProxyWrapper),
+		visitorCfgs: make(map[string]config.ProxyConf),
+		visitors:    make(map[string]Visitor),
+		sendCh:      msgSendCh,
+		closed:      false,
+		Logger:      log.NewPrefixLogger(logPrefix),
+	}
+}
+
+func (pm *ProxyManager) Reset(msgSendCh chan (msg.Message), logPrefix string) {
+	pm.mu.Lock()
+	defer pm.mu.Unlock()
+	pm.closed = false
+	pm.sendCh = msgSendCh
+	pm.ClearLogPrefix()
+	pm.AddLogPrefix(logPrefix)
+}
+
+// Must hold the lock before calling this function.
+func (pm *ProxyManager) sendMsg(m msg.Message) error {
+	err := errors.PanicToError(func() {
+		pm.sendCh <- m
+	})
+	if err != nil {
+		pm.closed = true
+	}
+	return err
+}
+
+func (pm *ProxyManager) StartProxy(name string, serverRespErr string) error {
+	pm.mu.Lock()
+	defer pm.mu.Unlock()
+	if pm.closed {
+		return fmt.Errorf("ProxyManager is closed now")
+	}
+
+	pxy, ok := pm.proxies[name]
+	if !ok {
+		return fmt.Errorf("no proxy found")
+	}
+
+	if err := pxy.Start(serverRespErr); err != nil {
+		errRet := err
+		err = pm.sendMsg(&msg.CloseProxy{
+			ProxyName: name,
+		})
+		if err != nil {
+			errRet = fmt.Errorf("send CloseProxy message error")
+		}
+		return errRet
+	}
+	return nil
+}
+
+func (pm *ProxyManager) CloseProxies() {
+	pm.mu.RLock()
+	defer pm.mu.RUnlock()
+	for _, pxy := range pm.proxies {
+		pxy.Close()
+	}
+}
+
+func (pm *ProxyManager) CheckAndStartProxy() {
+	pm.mu.RLock()
+	defer pm.mu.RUnlock()
+	if pm.closed {
+		pm.Warn("CheckAndStartProxy error: ProxyManager is closed now")
+		return
+	}
+
+	for _, pxy := range pm.proxies {
+		if !pxy.IsRunning() {
+			var newProxyMsg msg.NewProxy
+			pxy.Cfg.UnMarshalToMsg(&newProxyMsg)
+			err := pm.sendMsg(&newProxyMsg)
+			if err != nil {
+				pm.Warn("[%s] proxy send NewProxy message error")
+				return
+			}
+		}
+	}
+
+	for _, cfg := range pm.visitorCfgs {
+		if _, exist := pm.visitors[cfg.GetName()]; !exist {
+			pm.Info("try to start visitor [%s]", cfg.GetName())
+			visitor := NewVisitor(pm.ctl, cfg)
+			err := visitor.Run()
+			if err != nil {
+				visitor.Warn("start error: %v", err)
+				continue
+			}
+			pm.visitors[cfg.GetName()] = visitor
+			visitor.Info("start visitor success")
+		}
+	}
+}
+
+func (pm *ProxyManager) Reload(pxyCfgs map[string]config.ProxyConf, visitorCfgs map[string]config.ProxyConf) error {
+	pm.mu.Lock()
+	defer pm.mu.Unlock()
+	if pm.closed {
+		err := fmt.Errorf("Reload error: ProxyManager is closed now")
+		pm.Warn(err.Error())
+		return err
+	}
+
+	delPxyNames := make([]string, 0)
+	for name, pxy := range pm.proxies {
+		del := false
+		cfg, ok := pxyCfgs[name]
+		if !ok {
+			del = true
+		} else {
+			if !pxy.Cfg.Compare(cfg) {
+				del = true
+			}
+		}
+
+		if del {
+			delPxyNames = append(delPxyNames, name)
+			delete(pm.proxies, name)
+
+			pxy.Close()
+			err := pm.sendMsg(&msg.CloseProxy{
+				ProxyName: name,
+			})
+			if err != nil {
+				err = fmt.Errorf("Reload error: ProxyManager is closed now")
+				pm.Warn(err.Error())
+				return err
+			}
+		}
+	}
+	pm.Info("proxy removed: %v", delPxyNames)
+
+	addPxyNames := make([]string, 0)
+	for name, cfg := range pxyCfgs {
+		if _, ok := pm.proxies[name]; !ok {
+			pxy := NewProxyWrapper(cfg)
+			pm.proxies[name] = pxy
+			addPxyNames = append(addPxyNames, name)
+		}
+	}
+	pm.Info("proxy added: %v", addPxyNames)
+
+	delVisitorName := make([]string, 0)
+	for name, oldVisitorCfg := range pm.visitorCfgs {
+		del := false
+		cfg, ok := visitorCfgs[name]
+		if !ok {
+			del = true
+		} else {
+			if !oldVisitorCfg.Compare(cfg) {
+				del = true
+			}
+		}
+
+		if del {
+			delVisitorName = append(delVisitorName, name)
+			delete(pm.visitorCfgs, name)
+			if visitor, ok := pm.visitors[name]; ok {
+				visitor.Close()
+			}
+			delete(pm.visitors, name)
+		}
+	}
+	pm.Info("visitor removed: %v", delVisitorName)
+
+	addVisitorName := make([]string, 0)
+	for name, visitorCfg := range visitorCfgs {
+		if _, ok := pm.visitorCfgs[name]; !ok {
+			pm.visitorCfgs[name] = visitorCfg
+			addVisitorName = append(addVisitorName, name)
+		}
+	}
+	pm.Info("visitor added: %v", addVisitorName)
+	return nil
+}
+
+func (pm *ProxyManager) HandleWorkConn(name string, workConn frpNet.Conn) {
+	pm.mu.RLock()
+	pw, ok := pm.proxies[name]
+	pm.mu.RUnlock()
+	if ok {
+		pw.InWorkConn(workConn)
+	} else {
+		workConn.Close()
+	}
+}
+
+func (pm *ProxyManager) GetAllProxyStatus() []*ProxyStatus {
+	ps := make([]*ProxyStatus, 0)
+	pm.mu.RLock()
+	defer pm.mu.RUnlock()
+	for _, pxy := range pm.proxies {
+		ps = append(ps, pxy.GetStatus())
+	}
+	return ps
+}

client/service.go

@@ -53,6 +53,6 @@ func (svr *Service) Run() error {
 	return nil
 }
 
-func (svr *Service) Close() error {
-	return svr.ctl.Close()
+func (svr *Service) Close() {
+	svr.ctl.Close()
 }

cmd/frpc/main.go

@@ -28,6 +28,7 @@ import (
 	"time"
 
 	docopt "github.com/docopt/docopt-go"
+	"github.com/rodaine/table"
 	ini "github.com/vaughan0/go-ini"
 
 	"github.com/fatedier/frp/client"
@@ -44,7 +45,8 @@ var usage string = `frpc is the client of frp
 
 Usage: 
     frpc [-c config_file] [-L log_file] [--log-level=<log_level>] [--server-addr=<server_addr>]
-    frpc [-c config_file] --reload
+    frpc reload [-c config_file]
+    frpc status [-c config_file]
     frpc -h | --help
     frpc -v | --version
 
@@ -53,7 +55,6 @@ Options:
     -L log_file                 set output log file, including console
     --log-level=<log_level>     set log level: debug, info, warn, error
     --server-addr=<server_addr> addr which frps is listening for, example: 0.0.0.0:7000
-    --reload                    reload configure file without program exit
     -h --help                   show this screen
     -v --version                show version
 `
@@ -82,40 +83,25 @@ func main() {
 	config.ClientCommonCfg.ConfigFile = confFile
 
 	// check if reload command
-	if args["--reload"] != nil {
-		if args["--reload"].(bool) {
-			req, err := http.NewRequest("GET", "http://"+
-				config.ClientCommonCfg.AdminAddr+":"+fmt.Sprintf("%d", config.ClientCommonCfg.AdminPort)+"/api/reload", nil)
-			if err != nil {
+	if args["reload"] != nil {
+		if args["reload"].(bool) {
+			if err = CmdReload(); err != nil {
 				fmt.Printf("frps reload error: %v\n", err)
 				os.Exit(1)
+			} else {
+				fmt.Printf("reload success\n")
+				os.Exit(0)
+			}
+		}
 	}
 
-			authStr := "Basic " + base64.StdEncoding.EncodeToString([]byte(config.ClientCommonCfg.AdminUser+":"+
-				config.ClientCommonCfg.AdminPwd))
-
-			req.Header.Add("Authorization", authStr)
-			resp, err := http.DefaultClient.Do(req)
-			if err != nil {
-				fmt.Printf("frpc reload error: %v\n", err)
+	// check if status command
+	if args["status"] != nil {
+		if args["status"].(bool) {
+			if err = CmdStatus(); err != nil {
+				fmt.Println("frps get status error: %v\n", err)
 				os.Exit(1)
 			} else {
-				defer resp.Body.Close()
-				body, err := ioutil.ReadAll(resp.Body)
-				if err != nil {
-					fmt.Printf("frpc reload error: %v\n", err)
-					os.Exit(1)
-				}
-				res := &client.GeneralResponse{}
-				err = json.Unmarshal(body, &res)
-				if err != nil {
-					fmt.Printf("http response error: %s\n", strings.TrimSpace(string(body)))
-					os.Exit(1)
-				} else if res.Code != 0 {
-					fmt.Printf("reload error: %s\n", res.Msg)
-					os.Exit(1)
-				}
-				fmt.Printf("reload success\n")
 				os.Exit(0)
 			}
 		}
@@ -187,3 +173,133 @@ func HandleSignal(svr *client.Service) {
 	time.Sleep(250 * time.Millisecond)
 	os.Exit(0)
 }
+
+func CmdReload() error {
+	if config.ClientCommonCfg.AdminPort == 0 {
+		return fmt.Errorf("admin_port shoud be set if you want to use reload feature")
+	}
+
+	req, err := http.NewRequest("GET", "http://"+
+		config.ClientCommonCfg.AdminAddr+":"+fmt.Sprintf("%d", config.ClientCommonCfg.AdminPort)+"/api/reload", nil)
+	if err != nil {
+		return err
+	}
+
+	authStr := "Basic " + base64.StdEncoding.EncodeToString([]byte(config.ClientCommonCfg.AdminUser+":"+
+		config.ClientCommonCfg.AdminPwd))
+
+	req.Header.Add("Authorization", authStr)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	} else {
+		if resp.StatusCode != 200 {
+			return fmt.Errorf("admin api status code [%d]", resp.StatusCode)
+		}
+		defer resp.Body.Close()
+		body, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			return err
+		}
+		res := &client.GeneralResponse{}
+		err = json.Unmarshal(body, &res)
+		if err != nil {
+			return fmt.Errorf("unmarshal http response error: %s", strings.TrimSpace(string(body)))
+		} else if res.Code != 0 {
+			return fmt.Errorf(res.Msg)
+		}
+	}
+	return nil
+}
+
+func CmdStatus() error {
+	if config.ClientCommonCfg.AdminPort == 0 {
+		return fmt.Errorf("admin_port shoud be set if you want to get proxy status")
+	}
+
+	req, err := http.NewRequest("GET", "http://"+
+		config.ClientCommonCfg.AdminAddr+":"+fmt.Sprintf("%d", config.ClientCommonCfg.AdminPort)+"/api/status", nil)
+	if err != nil {
+		return err
+	}
+
+	authStr := "Basic " + base64.StdEncoding.EncodeToString([]byte(config.ClientCommonCfg.AdminUser+":"+
+		config.ClientCommonCfg.AdminPwd))
+
+	req.Header.Add("Authorization", authStr)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	} else {
+		if resp.StatusCode != 200 {
+			return fmt.Errorf("admin api status code [%d]", resp.StatusCode)
+		}
+		defer resp.Body.Close()
+		body, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			return err
+		}
+		res := &client.StatusResp{}
+		err = json.Unmarshal(body, &res)
+		if err != nil {
+			return fmt.Errorf("unmarshal http response error: %s", strings.TrimSpace(string(body)))
+		}
+
+		fmt.Println("Proxy Status...")
+		if len(res.Tcp) > 0 {
+			fmt.Printf("TCP")
+			tbl := table.New("Name", "Status", "LocalAddr", "Plugin", "RemoteAddr", "Error")
+			for _, ps := range res.Tcp {
+				tbl.AddRow(ps.Name, ps.Status, ps.LocalAddr, ps.Plugin, ps.RemoteAddr, ps.Err)
+			}
+			tbl.Print()
+			fmt.Println("")
+		}
+		if len(res.Udp) > 0 {
+			fmt.Printf("UDP")
+			tbl := table.New("Name", "Status", "LocalAddr", "Plugin", "RemoteAddr", "Error")
+			for _, ps := range res.Udp {
+				tbl.AddRow(ps.Name, ps.Status, ps.LocalAddr, ps.Plugin, ps.RemoteAddr, ps.Err)
+			}
+			tbl.Print()
+			fmt.Println("")
+		}
+		if len(res.Http) > 0 {
+			fmt.Printf("HTTP")
+			tbl := table.New("Name", "Status", "LocalAddr", "Plugin", "RemoteAddr", "Error")
+			for _, ps := range res.Http {
+				tbl.AddRow(ps.Name, ps.Status, ps.LocalAddr, ps.Plugin, ps.RemoteAddr, ps.Err)
+			}
+			tbl.Print()
+			fmt.Println("")
+		}
+		if len(res.Https) > 0 {
+			fmt.Printf("HTTPS")
+			tbl := table.New("Name", "Status", "LocalAddr", "Plugin", "RemoteAddr", "Error")
+			for _, ps := range res.Https {
+				tbl.AddRow(ps.Name, ps.Status, ps.LocalAddr, ps.Plugin, ps.RemoteAddr, ps.Err)
+			}
+			tbl.Print()
+			fmt.Println("")
+		}
+		if len(res.Stcp) > 0 {
+			fmt.Printf("STCP")
+			tbl := table.New("Name", "Status", "LocalAddr", "Plugin", "RemoteAddr", "Error")
+			for _, ps := range res.Stcp {
+				tbl.AddRow(ps.Name, ps.Status, ps.LocalAddr, ps.Plugin, ps.RemoteAddr, ps.Err)
+			}
+			tbl.Print()
+			fmt.Println("")
+		}
+		if len(res.Xtcp) > 0 {
+			fmt.Printf("XTCP")
+			tbl := table.New("Name", "Status", "LocalAddr", "Plugin", "RemoteAddr", "Error")
+			for _, ps := range res.Xtcp {
+				tbl.AddRow(ps.Name, ps.Status, ps.LocalAddr, ps.Plugin, ps.RemoteAddr, ps.Err)
+			}
+			tbl.Print()
+			fmt.Println("")
+		}
+	}
+	return nil
+}

models/config/proxy.go

@@ -52,6 +52,7 @@ func NewConfByType(proxyType string) ProxyConf {
 
 type ProxyConf interface {
 	GetName() string
+	GetType() string
 	GetBaseInfo() *BaseProxyConf
 	LoadFromMsg(pMsg *msg.NewProxy)
 	LoadFromFile(name string, conf ini.Section) error
@@ -103,6 +104,10 @@ func (cfg *BaseProxyConf) GetName() string {
 	return cfg.ProxyName
 }
 
+func (cfg *BaseProxyConf) GetType() string {
+	return cfg.ProxyType
+}
+
 func (cfg *BaseProxyConf) GetBaseInfo() *BaseProxyConf {
 	return cfg
 }

server/control.go

@@ -253,13 +253,13 @@ func (ctl *Control) stoper() {
 	ctl.allShutdown.WaitStart()
 
 	close(ctl.readCh)
-	ctl.managerShutdown.WaitDown()
+	ctl.managerShutdown.WaitDone()
 
 	close(ctl.sendCh)
-	ctl.writerShutdown.WaitDown()
+	ctl.writerShutdown.WaitDone()
 
 	ctl.conn.Close()
-	ctl.readerShutdown.WaitDown()
+	ctl.readerShutdown.WaitDone()
 
 	close(ctl.workConnCh)
 	for workConn := range ctl.workConnCh {

server/service.go

@@ -283,7 +283,7 @@ func (svr *Service) RegisterControl(ctlConn frpNet.Conn, loginMsg *msg.Login) (e
 	ctl := NewControl(svr, ctlConn, loginMsg)
 
 	if oldCtl := svr.ctlManager.Add(loginMsg.RunId, ctl); oldCtl != nil {
-		oldCtl.allShutdown.WaitDown()
+		oldCtl.allShutdown.WaitDone()
 	}
 
 	ctlConn.AddLogPrefix(loginMsg.RunId)

utils/shutdown/shutdown.go

@@ -21,8 +21,8 @@ import (
 type Shutdown struct {
 	doing   bool
 	ending  bool
-	start  chan struct{}
-	down   chan struct{}
+	startCh chan struct{}
+	doneCh  chan struct{}
 	mu      sync.Mutex
 }
 
@@ -30,8 +30,8 @@ func New() *Shutdown {
 	return &Shutdown{
 		doing:   false,
 		ending:  false,
-		start:  make(chan struct{}),
-		down:   make(chan struct{}),
+		startCh: make(chan struct{}),
+		doneCh:  make(chan struct{}),
 	}
 }
 
@@ -40,12 +40,12 @@ func (s *Shutdown) Start() {
 	defer s.mu.Unlock()
 	if !s.doing {
 		s.doing = true
-		close(s.start)
+		close(s.startCh)
 	}
 }
 
 func (s *Shutdown) WaitStart() {
-	<-s.start
+	<-s.startCh
 }
 
 func (s *Shutdown) Done() {
@@ -53,10 +53,10 @@ func (s *Shutdown) Done() {
 	defer s.mu.Unlock()
 	if !s.ending {
 		s.ending = true
-		close(s.down)
+		close(s.doneCh)
 	}
 }
 
-func (s *Shutdown) WaitDown() {
-	<-s.down
+func (s *Shutdown) WaitDone() {
+	<-s.doneCh
 }