Added load balancer (wip)

+ Added support for multiple upstreams
+ Added load balancer
+ Added upstream abstraction in endpoint
+ Added load balancer structure
+ Added breaking change auto-updater
+ Added uptime monitor proxy type definitions
+ Added upstream editor UI
+ Fixed charset bug in many snippets HTML files

src/api.go

@@ -61,6 +61,12 @@ func initAPIs() {
 	authRouter.HandleFunc("/api/proxy/listenPort80", HandleUpdatePort80Listener)
 	authRouter.HandleFunc("/api/proxy/requestIsProxied", HandleManagementProxyCheck)
 	authRouter.HandleFunc("/api/proxy/developmentMode", HandleDevelopmentModeChange)
+	//Reverse proxy upstream (load balance) APIs
+	authRouter.HandleFunc("/api/proxy/upstream/list", ReverseProxyUpstreamList)
+	authRouter.HandleFunc("/api/proxy/upstream/add", ReverseProxyUpstreamAdd)
+	authRouter.HandleFunc("/api/proxy/upstream/setPriority", ReverseProxyUpstreamSetPriority)
+	authRouter.HandleFunc("/api/proxy/upstream/update", ReverseProxyUpstreamUpdate)
+	authRouter.HandleFunc("/api/proxy/upstream/remove", ReverseProxyUpstreamDelete)
 	//Reverse proxy virtual directory APIs
 	authRouter.HandleFunc("/api/proxy/vdir/list", ReverseProxyListVdir)
 	authRouter.HandleFunc("/api/proxy/vdir/add", ReverseProxyAddVdir)

src/config.go

@@ -14,6 +14,7 @@ import (
 	"time"
 
 	"imuslab.com/zoraxy/mod/dynamicproxy"
+	"imuslab.com/zoraxy/mod/dynamicproxy/loadbalance"
 	"imuslab.com/zoraxy/mod/utils"
 )
 
@@ -79,7 +80,7 @@ func LoadReverseProxyConfig(configFilepath string) error {
 		return errors.New("not supported proxy type")
 	}
 
-	SystemWideLogger.PrintAndLog("Proxy", thisConfigEndpoint.RootOrMatchingDomain+" -> "+thisConfigEndpoint.Domain+" routing rule loaded", nil)
+	SystemWideLogger.PrintAndLog("Proxy", thisConfigEndpoint.RootOrMatchingDomain+" -> "+loadbalance.GetUpstreamsAsString(thisConfigEndpoint.ActiveOrigins)+" routing rule loaded", nil)
 	return nil
 }
 
@@ -130,12 +131,18 @@ func RemoveReverseProxyConfig(endpoint string) error {
 func GetDefaultRootConfig() (*dynamicproxy.ProxyEndpoint, error) {
 	//Default settings
 	rootProxyEndpoint, err := dynamicProxyRouter.PrepareProxyRoute(&dynamicproxy.ProxyEndpoint{
-		ProxyType:               dynamicproxy.ProxyType_Root,
-		RootOrMatchingDomain:    "/",
-		Domain:                  "127.0.0.1:" + staticWebServer.GetListeningPort(),
-		RequireTLS:              false,
+		ProxyType:            dynamicproxy.ProxyType_Root,
+		RootOrMatchingDomain: "/",
+		ActiveOrigins: []*loadbalance.Upstream{
+			{
+				OriginIpOrDomain:    "127.0.0.1:" + staticWebServer.GetListeningPort(),
+				RequireTLS:          false,
+				SkipCertValidations: false,
+				Weight:              0,
+			},
+		},
+		InactiveOrigins:         []*loadbalance.Upstream{},
 		BypassGlobalTLS:         false,
-		SkipCertValidations:     false,
 		VirtualDirectories:      []*dynamicproxy.VirtualDirectoryEndpoint{},
 		RequireBasicAuth:        false,
 		BasicAuthCredentials:    []*dynamicproxy.BasicAuthCredentials{},

src/main.go

@@ -32,6 +32,7 @@ import (
 	"imuslab.com/zoraxy/mod/statistic/analytic"
 	"imuslab.com/zoraxy/mod/streamproxy"
 	"imuslab.com/zoraxy/mod/tlscert"
+	"imuslab.com/zoraxy/mod/update"
 	"imuslab.com/zoraxy/mod/uptime"
 	"imuslab.com/zoraxy/mod/utils"
 	"imuslab.com/zoraxy/mod/webserv"
@@ -52,6 +53,7 @@ var enableHighSpeedGeoIPLookup = flag.Bool("fastgeoip", false, "Enable high spee
 var staticWebServerRoot = flag.String("webroot", "./www", "Static web server root folder. Only allow chnage in start paramters")
 var allowWebFileManager = flag.Bool("webfm", true, "Enable web file manager for static web server root folder")
 var logOutputToFile = flag.Bool("log", true, "Log terminal output to file")
+var updateMode = flag.Int("update", 0, "Version number (usually the version before you update Zoraxy) to start accumulation update. To update v3.0.7 to latest, use -update=307")
 
 var (
 	name        = "Zoraxy"
@@ -69,11 +71,11 @@ var (
 	/*
 		Handler Modules
 	*/
-	sysdb              *database.Database        //System database
-	authAgent          *auth.AuthAgent           //Authentication agent
-	tlsCertManager     *tlscert.Manager          //TLS / SSL management
-	redirectTable      *redirection.RuleTable    //Handle special redirection rule sets
-	loadbalancer       *loadbalance.RouteManager //Load balancer manager to get routing targets from proxy rules
+	sysdb          *database.Database     //System database
+	authAgent      *auth.AuthAgent        //Authentication agent
+	tlsCertManager *tlscert.Manager       //TLS / SSL management
+	redirectTable  *redirection.RuleTable //Handle special redirection rule sets
+
 	pathRuleHandler    *pathrule.Handler         //Handle specific path blocking or custom headers
 	geodbStore         *geodb.Store              //GeoIP database, for resolving IP into country code
 	accessController   *access.Controller        //Access controller, handle black list and white list
@@ -88,6 +90,7 @@ var (
 	acmeAutoRenewer    *acme.AutoRenewer         //Handler for ACME auto renew ticking
 	staticWebServer    *webserv.WebServer        //Static web server for hosting simple stuffs
 	forwardProxy       *forwardproxy.Handler     //HTTP Forward proxy, basically VPN for web browser
+	loadBalancer       *loadbalance.RouteManager //Global scope loadbalancer, store the state of the lb routing
 
 	//Helper modules
 	EmailSender       *email.Sender         //Email sender that handle email sending
@@ -144,6 +147,17 @@ func main() {
 		os.Exit(0)
 	}
 
+	if *updateMode > 306 {
+		fmt.Println("Entering Update Mode")
+		update.RunConfigUpdate(*updateMode, update.GetVersionIntFromVersionNumber(version))
+		os.Exit(0)
+	}
+
+	if !utils.ValidateListeningAddress(*webUIPort) {
+		fmt.Println("Malformed -port (listening address) paramter. Do you mean -port=:" + *webUIPort + "?")
+		os.Exit(0)
+	}
+
 	SetupCloseHandler()
 
 	//Read or create the system uuid

src/mod/acme/acme.go

@@ -448,7 +448,12 @@ func (a *ACMEHandler) HandleRenewCertificate(w http.ResponseWriter, r *http.Requ
 	}
 
 	domains := strings.Split(domainPara, ",")
-	result, err := a.ObtainCert(domains, filename, email, ca, caUrl, skipTLS, dns)
+	//Clean spaces in front or behind each domain
+	cleanedDomains := []string{}
+	for _, domain := range domains {
+		cleanedDomains = append(cleanedDomains, strings.TrimSpace(domain))
+	}
+	result, err := a.ObtainCert(cleanedDomains, filename, email, ca, caUrl, skipTLS, dns)
 	if err != nil {
 		utils.SendErrorResponse(w, jsonEscape(err.Error()))
 		return

src/mod/dynamicproxy/Server.go

@@ -20,6 +20,7 @@ import (
 		- Access Router
 			- Blacklist
 			- Whitelist
+		- Rate Limitor
 		- Basic Auth
 		- Vitrual Directory Proxy
 		- Subdomain Proxy
@@ -30,7 +31,7 @@ func (h *ProxyHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	/*
 		Special Routing Rules, bypass most of the limitations
 	*/
-	//Check if there are external routing rule matches.
+	//Check if there are external routing rule (rr) matches.
 	//If yes, route them via external rr
 	matchedRoutingRule := h.Parent.GetMatchingRoutingRule(r)
 	if matchedRoutingRule != nil {
@@ -45,7 +46,7 @@ func (h *ProxyHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	//Check if this is a redirection url
 	if h.Parent.Option.RedirectRuleTable.IsRedirectable(r) {
 		statusCode := h.Parent.Option.RedirectRuleTable.HandleRedirect(w, r)
-		h.logRequest(r, statusCode != 500, statusCode, "redirect", "")
+		h.Parent.logRequest(r, statusCode != 500, statusCode, "redirect", "")
 		return
 	}
 
@@ -193,12 +194,12 @@ func (h *ProxyHandler) handleRootRouting(w http.ResponseWriter, r *http.Request)
 		}
 		hostname := parsedURL.Hostname()
 		if hostname == domainOnly {
-			h.logRequest(r, false, 500, "root-redirect", domainOnly)
+			h.Parent.logRequest(r, false, 500, "root-redirect", domainOnly)
 			http.Error(w, "Loopback redirects due to invalid settings", 500)
 			return
 		}
 
-		h.logRequest(r, false, 307, "root-redirect", domainOnly)
+		h.Parent.logRequest(r, false, 307, "root-redirect", domainOnly)
 		http.Redirect(w, r, redirectTarget, http.StatusTemporaryRedirect)
 	case DefaultSite_NotFoundPage:
 		//Serve the not found page, use template if exists

src/mod/dynamicproxy/access.go

@@ -24,7 +24,7 @@ func (h *ProxyHandler) handleAccessRouting(ruleID string, w http.ResponseWriter,
 
 	isBlocked, blockedReason := accessRequestBlocked(accessRule, h.Parent.Option.WebDirectory, w, r)
 	if isBlocked {
-		h.logRequest(r, false, 403, blockedReason, "")
+		h.Parent.logRequest(r, false, 403, blockedReason, "")
 	}
 	return isBlocked
 }

src/mod/dynamicproxy/basicAuth.go

@@ -18,7 +18,7 @@ import (
 func (h *ProxyHandler) handleBasicAuthRouting(w http.ResponseWriter, r *http.Request, pe *ProxyEndpoint) error {
 	err := handleBasicAuth(w, r, pe)
 	if err != nil {
-		h.logRequest(r, false, 401, "host", pe.Domain)
+		h.Parent.logRequest(r, false, 401, "host", r.URL.Hostname())
 	}
 	return err
 }

src/mod/dynamicproxy/dpcore/dpcore.go

@@ -180,7 +180,7 @@ var hopHeaders = []string{
 	"Te",      // canonicalized version of "TE"
 	"Trailer", // not Trailers per URL above; http://www.rfc-editor.org/errata_search.php?eid=4522
 	"Transfer-Encoding",
-	//"Upgrade",
+	//"Upgrade", // handled by websocket proxy in higher layer abstraction
 }
 
 // Copy response from src to dst with given flush interval, reference from httputil.ReverseProxy

src/mod/dynamicproxy/dynamicproxy.go

@@ -28,6 +28,7 @@ func NewDynamicProxy(option RouterOption) (*Router, error) {
 		Running:          false,
 		server:           nil,
 		routingRules:     []*RoutingRule{},
+		loadBalancer:     option.LoadBalancer,
 		rateLimitCounter: RequestCountPerIpTable{},
 	}
 
@@ -150,10 +151,16 @@ func (router *Router) StartProxyService() error {
 							}
 						}
 
-						sep.proxy.ServeHTTP(w, r, &dpcore.ResponseRewriteRuleSet{
-							ProxyDomain:  sep.Domain,
+						selectedUpstream, err := router.loadBalancer.GetRequestUpstreamTarget(r, sep.ActiveOrigins)
+						if err != nil {
+							http.ServeFile(w, r, "./web/hosterror.html")
+							log.Println(err.Error())
+							router.logRequest(r, false, 404, "vdir-http", r.Host)
+						}
+						selectedUpstream.ServeHTTP(w, r, &dpcore.ResponseRewriteRuleSet{
+							ProxyDomain:  selectedUpstream.OriginIpOrDomain,
 							OriginalHost: originalHostHeader,
-							UseTLS:       sep.RequireTLS,
+							UseTLS:       selectedUpstream.RequireTLS,
 							PathPrefix:   "",
 							Version:      sep.parent.Option.HostVersion,
 						})

src/mod/dynamicproxy/endpoints.go

@@ -7,6 +7,7 @@ import (
 
 	"golang.org/x/text/cases"
 	"golang.org/x/text/language"
+	"imuslab.com/zoraxy/mod/dynamicproxy/loadbalance"
 )
 
 /*
@@ -133,6 +134,92 @@ func (ep *ProxyEndpoint) AddVirtualDirectoryRule(vdir *VirtualDirectoryEndpoint)
 	return readyRoutingRule, nil
 }
 
+/* Upstream related wrapper functions */
+//Check if there already exists another upstream with identical origin
+func (ep *ProxyEndpoint) UpstreamOriginExists(originURL string) bool {
+	for _, origin := range ep.ActiveOrigins {
+		if origin.OriginIpOrDomain == originURL {
+			return true
+		}
+	}
+	for _, origin := range ep.InactiveOrigins {
+		if origin.OriginIpOrDomain == originURL {
+			return true
+		}
+	}
+	return false
+}
+
+// Get a upstream origin from given origin ip or domain
+func (ep *ProxyEndpoint) GetUpstreamOriginByMatchingIP(originIpOrDomain string) (*loadbalance.Upstream, error) {
+	for _, origin := range ep.ActiveOrigins {
+		if origin.OriginIpOrDomain == originIpOrDomain {
+			return origin, nil
+		}
+	}
+
+	for _, origin := range ep.InactiveOrigins {
+		if origin.OriginIpOrDomain == originIpOrDomain {
+			return origin, nil
+		}
+	}
+	return nil, errors.New("target upstream origin not found")
+}
+
+// Add upstream to endpoint and update it to runtime
+func (ep *ProxyEndpoint) AddUpstreamOrigin(newOrigin *loadbalance.Upstream, activate bool) error {
+	//Check if the upstream already exists
+	if ep.UpstreamOriginExists(newOrigin.OriginIpOrDomain) {
+		return errors.New("upstream with same origin already exists")
+	}
+
+	if activate {
+		//Add it to the active origin list
+		err := newOrigin.StartProxy()
+		if err != nil {
+			return err
+		}
+		ep.ActiveOrigins = append(ep.ActiveOrigins, newOrigin)
+	} else {
+		//Add to inactive origin list
+		ep.InactiveOrigins = append(ep.InactiveOrigins, newOrigin)
+	}
+
+	ep.UpdateToRuntime()
+	return nil
+}
+
+// Remove upstream from endpoint and update it to runtime
+func (ep *ProxyEndpoint) RemoveUpstreamOrigin(originIpOrDomain string) error {
+	//Just to make sure there are no spaces
+	originIpOrDomain = strings.TrimSpace(originIpOrDomain)
+
+	//Check if the upstream already been removed
+	if !ep.UpstreamOriginExists(originIpOrDomain) {
+		//Not exists in the first place
+		return nil
+	}
+
+	newActiveOriginList := []*loadbalance.Upstream{}
+	for _, origin := range ep.ActiveOrigins {
+		if origin.OriginIpOrDomain != originIpOrDomain {
+			newActiveOriginList = append(newActiveOriginList, origin)
+		}
+	}
+
+	newInactiveOriginList := []*loadbalance.Upstream{}
+	for _, origin := range ep.InactiveOrigins {
+		if origin.OriginIpOrDomain != originIpOrDomain {
+			newInactiveOriginList = append(newInactiveOriginList, origin)
+		}
+	}
+	//Ok, set the origin list to the new one
+	ep.ActiveOrigins = newActiveOriginList
+	ep.InactiveOrigins = newInactiveOriginList
+	ep.UpdateToRuntime()
+	return nil
+}
+
 // Check if the proxy endpoint hostname or alias name contains subdomain wildcard
 func (ep *ProxyEndpoint) ContainsWildcardName(skipAliasCheck bool) bool {
 	hostname := ep.RootOrMatchingDomain

src/mod/dynamicproxy/loadbalance/loadbalance.go

@@ -1,9 +1,13 @@
 package loadbalance
 
 import (
+	"strings"
+	"sync"
+	"sync/atomic"
+
+	"imuslab.com/zoraxy/mod/dynamicproxy/dpcore"
 	"imuslab.com/zoraxy/mod/geodb"
 	"imuslab.com/zoraxy/mod/info/logger"
-	"imuslab.com/zoraxy/mod/uptime"
 )
 
 /*
@@ -12,49 +16,75 @@ import (
 	Handleing load balance request for upstream destinations
 */
 
-type BalancePolicy int
-
-const (
-	BalancePolicy_RoundRobin BalancePolicy = 0 //Round robin, will ignore upstream if down
-	BalancePolicy_Fallback   BalancePolicy = 1 //Fallback only. Will only switch to next node if the first one failed
-	BalancePolicy_Random     BalancePolicy = 2 //Random, randomly pick one from the list that is online
-	BalancePolicy_GeoRegion  BalancePolicy = 3 //Use the one defined for this geo-location, when down, pick the next avaible node
-)
-
-type LoadBalanceRule struct {
-	Upstreams         []string      //Reverse proxy upstream servers
-	LoadBalancePolicy BalancePolicy //Policy in deciding which target IP to proxy
-	UseRegionLock     bool          //If this is enabled with BalancePolicy_Geo, when the main site failed, it will not pick another node
-	UseStickySession  bool          //Use sticky session, if you are serving EU countries, make sure to add the "Do you want cookie" warning
-
-	parent *RouteManager
-}
-
 type Options struct {
-	Geodb         *geodb.Store    //GeoIP resolver for checking incoming request origin country
-	UptimeMonitor *uptime.Monitor //For checking if the target is online, this might be nil when the module starts
+	UseActiveHealthCheck bool         //Use active health check, default to false
+	Geodb                *geodb.Store //GeoIP resolver for checking incoming request origin country
+	Logger               *logger.Logger
 }
 
 type RouteManager struct {
-	Options Options
-	Logger  *logger.Logger
+	LoadBalanceMap         sync.Map  //Sync map to store the last load balance state of a given node
+	OnlineStatusMap        sync.Map  //Sync map to store the online status of a given ip address or domain name
+	onlineStatusTickerStop chan bool //Stopping channel for the online status pinger
+	Options                Options   //Options for the load balancer
 }
 
-// Create a new load balance route manager
-func NewRouteManager(options *Options, logger *logger.Logger) *RouteManager {
-	newManager := RouteManager{
-		Options: *options,
-		Logger:  logger,
+/* Upstream or Origin Server */
+type Upstream struct {
+	//Upstream Proxy Configs
+	OriginIpOrDomain         string //Target IP address or domain name with port
+	RequireTLS               bool   //Require TLS connection
+	SkipCertValidations      bool   //Set to true to accept self signed certs
+	SkipWebSocketOriginCheck bool   //Skip origin check on websocket upgrade connections
+
+	//Load balancing configs
+	Weight  int //Random weight for round robin, 0 for fallback only
+	MaxConn int //Maxmium connection to this server, 0 for unlimited
+
+	currentConnectionCounts atomic.Uint64 //Counter for number of client currently connected
+	proxy                   *dpcore.ReverseProxy
+}
+
+// Create a new load balancer
+func NewLoadBalancer(options *Options) *RouteManager {
+	onlineStatusCheckerStopChan := make(chan bool)
+
+	return &RouteManager{
+		LoadBalanceMap:         sync.Map{},
+		OnlineStatusMap:        sync.Map{},
+		onlineStatusTickerStop: onlineStatusCheckerStopChan,
+		Options:                *options,
 	}
-	logger.PrintAndLog("INFO", "Load Balance Route Manager started", nil)
-	return &newManager
 }
 
-func (b *LoadBalanceRule) GetProxyTargetIP() {
-//TODO: Implement get proxy target IP logic here
+// UpstreamsReady checks if the group of upstreams contains at least one
+// origin server that is ready
+func (m *RouteManager) UpstreamsReady(upstreams []*Upstream) bool {
+	for _, upstream := range upstreams {
+		if upstream.IsReady() {
+			return true
+		}
+	}
+	return false
+}
+
+// String format and convert a list of upstream into a string representations
+func GetUpstreamsAsString(upstreams []*Upstream) string {
+	targets := []string{}
+	for _, upstream := range upstreams {
+		targets = append(targets, upstream.String())
+	}
+	return strings.Join(targets, ", ")
+}
+
+func (m *RouteManager) Close() {
+	if m.onlineStatusTickerStop != nil {
+		m.onlineStatusTickerStop <- true
+	}
+
 }
 
 // Print debug message
 func (m *RouteManager) debugPrint(message string, err error) {
-	m.Logger.PrintAndLog("LB", message, err)
+	m.Options.Logger.PrintAndLog("LoadBalancer", message, err)
 }

src/mod/dynamicproxy/loadbalance/onlineStatus.go

@@ -0,0 +1,70 @@
+package loadbalance
+
+import (
+	"net/http"
+	"time"
+)
+
+// Return the last ping status to see if the target is online
+func (m *RouteManager) IsTargetOnline(matchingDomainOrIp string) bool {
+	value, ok := m.LoadBalanceMap.Load(matchingDomainOrIp)
+	if !ok {
+		return false
+	}
+
+	isOnline, ok := value.(bool)
+	return ok && isOnline
+}
+
+func (m *RouteManager) SetTargetOffline() {
+
+}
+
+// Ping a target to see if it is online
+func PingTarget(targetMatchingDomainOrIp string, requireTLS bool) bool {
+	client := &http.Client{
+		Timeout: 10 * time.Second,
+	}
+
+	url := targetMatchingDomainOrIp
+	if requireTLS {
+		url = "https://" + url
+	} else {
+		url = "http://" + url
+	}
+
+	resp, err := client.Get(url)
+	if err != nil {
+		return false
+	}
+	defer resp.Body.Close()
+
+	return resp.StatusCode >= 200 && resp.StatusCode <= 600
+}
+
+// StartHeartbeats start pinging each server every minutes to make sure all targets are online
+// Active mode only
+/*
+func (m *RouteManager) StartHeartbeats(pingTargets []*FallbackProxyTarget) {
+	ticker := time.NewTicker(1 * time.Minute)
+	defer ticker.Stop()
+
+	fmt.Println("Heartbeat started")
+	go func() {
+		for {
+			select {
+			case <-m.onlineStatusTickerStop:
+				ticker.Stop()
+				return
+			case <-ticker.C:
+				for _, target := range pingTargets {
+					go func(target *FallbackProxyTarget) {
+						isOnline := PingTarget(target.MatchingDomainOrIp, target.RequireTLS)
+						m.LoadBalanceMap.Store(target.MatchingDomainOrIp, isOnline)
+					}(target)
+				}
+			}
+		}
+	}()
+}
+*/

src/mod/dynamicproxy/loadbalance/originPicker.go

@@ -0,0 +1,26 @@
+package loadbalance
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+)
+
+/*
+	Origin Picker
+
+	This script contains the code to pick the best origin
+	by this request.
+*/
+
+// GetRequestUpstreamTarget return the upstream target where this
+// request should be routed
+func (m *RouteManager) GetRequestUpstreamTarget(r *http.Request, origins []*Upstream) (*Upstream, error) {
+	if len(origins) == 0 {
+		return nil, errors.New("no upstream is defined for this host")
+	}
+
+	//TODO: Add upstream picking algorithm here
+	fmt.Println("DEBUG: Picking origin " + origins[0].OriginIpOrDomain)
+	return origins[0], nil
+}

src/mod/dynamicproxy/loadbalance/upstream.go

@@ -0,0 +1,75 @@
+package loadbalance
+
+import (
+	"encoding/json"
+	"errors"
+	"net/http"
+	"net/url"
+	"strings"
+
+	"imuslab.com/zoraxy/mod/dynamicproxy/dpcore"
+)
+
+// StartProxy create and start a HTTP proxy using dpcore
+// Example of webProxyEndpoint: https://example.com:443 or http://192.168.1.100:8080
+func (u *Upstream) StartProxy() error {
+	//Filter the tailing slash if any
+	domain := u.OriginIpOrDomain
+	if len(domain) == 0 {
+		return errors.New("invalid endpoint config")
+	}
+	if domain[len(domain)-1:] == "/" {
+		domain = domain[:len(domain)-1]
+	}
+
+	if !strings.HasPrefix("http://", domain) && !strings.HasPrefix("https://", domain) {
+		//TLS is not hardcoded in proxy target domain
+		if u.RequireTLS {
+			domain = "https://" + domain
+		} else {
+			domain = "http://" + domain
+		}
+	}
+
+	//Create a new proxy agent for this upstream
+	path, err := url.Parse(domain)
+	if err != nil {
+		return err
+	}
+
+	proxy := dpcore.NewDynamicProxyCore(path, "", &dpcore.DpcoreOptions{
+		IgnoreTLSVerification: u.SkipCertValidations,
+	})
+
+	u.proxy = proxy
+	return nil
+}
+
+// IsReady return the proxy ready state of the upstream server
+// Return false if StartProxy() is not called on this upstream before
+func (u *Upstream) IsReady() bool {
+	return u.proxy != nil
+}
+
+// Clone return a new deep copy object of the identical upstream
+func (u *Upstream) Clone() *Upstream {
+	newUpstream := Upstream{}
+	js, _ := json.Marshal(u)
+	json.Unmarshal(js, &newUpstream)
+	return &newUpstream
+}
+
+// ServeHTTP uses this upstream proxy router to route the current request
+func (u *Upstream) ServeHTTP(w http.ResponseWriter, r *http.Request, rrr *dpcore.ResponseRewriteRuleSet) error {
+	//Auto rewrite to upstream origin if not set
+	if rrr.ProxyDomain == "" {
+		rrr.ProxyDomain = u.OriginIpOrDomain
+	}
+
+	return u.proxy.ServeHTTP(w, r, rrr)
+}
+
+// String return the string representations of endpoints in this upstream
+func (u *Upstream) String() string {
+	return u.OriginIpOrDomain
+}

src/mod/dynamicproxy/proxyRequestHandler.go

@@ -16,6 +16,7 @@ import (
 	"imuslab.com/zoraxy/mod/websocketproxy"
 )
 
+// Check if the request URI matches any of the proxy endpoint
 func (router *Router) getTargetProxyEndpointFromRequestURI(requestURI string) *ProxyEndpoint {
 	var targetProxyEndpoint *ProxyEndpoint = nil
 	router.ProxyEndpoints.Range(func(key, value interface{}) bool {
@@ -30,6 +31,7 @@ func (router *Router) getTargetProxyEndpointFromRequestURI(requestURI string) *P
 	return targetProxyEndpoint
 }
 
+// Get the proxy endpoint from hostname, which might includes checking of wildcard certificates
 func (router *Router) getProxyEndpointFromHostname(hostname string) *ProxyEndpoint {
 	var targetSubdomainEndpoint *ProxyEndpoint = nil
 	ep, ok := router.ProxyEndpoints.Load(hostname)
@@ -110,12 +112,18 @@ func (router *Router) rewriteURL(rooturl string, requestURL string) string {
 func (h *ProxyHandler) hostRequest(w http.ResponseWriter, r *http.Request, target *ProxyEndpoint) {
 	r.Header.Set("X-Forwarded-Host", r.Host)
 	r.Header.Set("X-Forwarded-Server", "zoraxy-"+h.Parent.Option.HostUUID)
-
+	selectedUpstream, err := h.Parent.loadBalancer.GetRequestUpstreamTarget(r, target.ActiveOrigins)
+	if err != nil {
+		http.ServeFile(w, r, "./web/rperror.html")
+		log.Println(err.Error())
+		h.Parent.logRequest(r, false, 521, "subdomain-http", r.URL.Hostname())
+		return
+	}
 	requestURL := r.URL.String()
 	if r.Header["Upgrade"] != nil && strings.ToLower(r.Header["Upgrade"][0]) == "websocket" {
 		//Handle WebSocket request. Forward the custom Upgrade header and rewrite origin
 		r.Header.Set("Zr-Origin-Upgrade", "websocket")
-		wsRedirectionEndpoint := target.Domain
+		wsRedirectionEndpoint := selectedUpstream.OriginIpOrDomain
 		if wsRedirectionEndpoint[len(wsRedirectionEndpoint)-1:] != "/" {
 			//Append / to the end of the redirection endpoint if not exists
 			wsRedirectionEndpoint = wsRedirectionEndpoint + "/"
@@ -125,13 +133,13 @@ func (h *ProxyHandler) hostRequest(w http.ResponseWriter, r *http.Request, targe
 			requestURL = requestURL[1:]
 		}
 		u, _ := url.Parse("ws://" + wsRedirectionEndpoint + requestURL)
-		if target.RequireTLS {
+		if selectedUpstream.RequireTLS {
 			u, _ = url.Parse("wss://" + wsRedirectionEndpoint + requestURL)
 		}
-		h.logRequest(r, true, 101, "subdomain-websocket", target.Domain)
+		h.Parent.logRequest(r, true, 101, "subdomain-websocket", selectedUpstream.OriginIpOrDomain)
 		wspHandler := websocketproxy.NewProxy(u, websocketproxy.Options{
-			SkipTLSValidation: target.SkipCertValidations,
-			SkipOriginCheck:   target.SkipWebSocketOriginCheck,
+			SkipTLSValidation: selectedUpstream.SkipCertValidations,
+			SkipOriginCheck:   selectedUpstream.SkipWebSocketOriginCheck,
 		})
 		wspHandler.ServeHTTP(w, r)
 		return
@@ -148,10 +156,10 @@ func (h *ProxyHandler) hostRequest(w http.ResponseWriter, r *http.Request, targe
 	//Build downstream and upstream header rules
 	upstreamHeaders, downstreamHeaders := target.SplitInboundOutboundHeaders()
 
-	err := target.proxy.ServeHTTP(w, r, &dpcore.ResponseRewriteRuleSet{
-		ProxyDomain:       target.Domain,
+	err = selectedUpstream.ServeHTTP(w, r, &dpcore.ResponseRewriteRuleSet{
+		ProxyDomain:       selectedUpstream.OriginIpOrDomain,
 		OriginalHost:      originalHostHeader,
-		UseTLS:            target.RequireTLS,
+		UseTLS:            selectedUpstream.RequireTLS,
 		NoCache:           h.Parent.Option.NoCache,
 		PathPrefix:        "",
 		UpstreamHeaders:   upstreamHeaders,
@@ -164,15 +172,15 @@ func (h *ProxyHandler) hostRequest(w http.ResponseWriter, r *http.Request, targe
 		if errors.As(err, &dnsError) {
 			http.ServeFile(w, r, "./web/hosterror.html")
 			log.Println(err.Error())
-			h.logRequest(r, false, 404, "subdomain-http", target.Domain)
+			h.Parent.logRequest(r, false, 404, "subdomain-http", r.URL.Hostname())
 		} else {
 			http.ServeFile(w, r, "./web/rperror.html")
 			log.Println(err.Error())
-			h.logRequest(r, false, 521, "subdomain-http", target.Domain)
+			h.Parent.logRequest(r, false, 521, "subdomain-http", r.URL.Hostname())
 		}
 	}
 
-	h.logRequest(r, true, 200, "subdomain-http", target.Domain)
+	h.Parent.logRequest(r, true, 200, "subdomain-http", r.URL.Hostname())
 }
 
 // Handle vdir type request
@@ -194,10 +202,10 @@ func (h *ProxyHandler) vdirRequest(w http.ResponseWriter, r *http.Request, targe
 		if target.RequireTLS {
 			u, _ = url.Parse("wss://" + wsRedirectionEndpoint + r.URL.String())
 		}
-		h.logRequest(r, true, 101, "vdir-websocket", target.Domain)
+		h.Parent.logRequest(r, true, 101, "vdir-websocket", target.Domain)
 		wspHandler := websocketproxy.NewProxy(u, websocketproxy.Options{
 			SkipTLSValidation: target.SkipCertValidations,
-			SkipOriginCheck:   target.parent.SkipWebSocketOriginCheck,
+			SkipOriginCheck:   true, //You should not use websocket via virtual directory. But keep this to true for compatibility
 		})
 		wspHandler.ServeHTTP(w, r)
 		return
@@ -229,23 +237,23 @@ func (h *ProxyHandler) vdirRequest(w http.ResponseWriter, r *http.Request, targe
 		if errors.As(err, &dnsError) {
 			http.ServeFile(w, r, "./web/hosterror.html")
 			log.Println(err.Error())
-			h.logRequest(r, false, 404, "vdir-http", target.Domain)
+			h.Parent.logRequest(r, false, 404, "vdir-http", target.Domain)
 		} else {
 			http.ServeFile(w, r, "./web/rperror.html")
 			log.Println(err.Error())
-			h.logRequest(r, false, 521, "vdir-http", target.Domain)
+			h.Parent.logRequest(r, false, 521, "vdir-http", target.Domain)
 		}
 	}
-	h.logRequest(r, true, 200, "vdir-http", target.Domain)
+	h.Parent.logRequest(r, true, 200, "vdir-http", target.Domain)
 
 }
 
-func (h *ProxyHandler) logRequest(r *http.Request, succ bool, statusCode int, forwardType string, target string) {
-	if h.Parent.Option.StatisticCollector != nil {
+func (router *Router) logRequest(r *http.Request, succ bool, statusCode int, forwardType string, target string) {
+	if router.Option.StatisticCollector != nil {
 		go func() {
 			requestInfo := statistic.RequestInfo{
 				IpAddr:                        netutils.GetRequesterIP(r),
-				RequestOriginalCountryISOCode: h.Parent.Option.GeodbStore.GetRequesterCountryISOCode(r),
+				RequestOriginalCountryISOCode: router.Option.GeodbStore.GetRequesterCountryISOCode(r),
 				Succ:                          succ,
 				StatusCode:                    statusCode,
 				ForwardType:                   forwardType,
@@ -254,7 +262,7 @@ func (h *ProxyHandler) logRequest(r *http.Request, succ bool, statusCode int, fo
 				RequestURL:                    r.Host + r.RequestURI,
 				Target:                        target,
 			}
-			h.Parent.Option.StatisticCollector.RecordRequest(requestInfo)
+			router.Option.StatisticCollector.RecordRequest(requestInfo)
 		}()
 	}
 }

src/mod/dynamicproxy/ratelimit.go

@@ -51,7 +51,7 @@ func (t *RequestCountPerIpTable) Clear() {
 func (h *ProxyHandler) handleRateLimitRouting(w http.ResponseWriter, r *http.Request, pe *ProxyEndpoint) error {
 	err := h.Parent.handleRateLimit(w, r, pe)
 	if err != nil {
-		h.logRequest(r, false, 429, "ratelimit", pe.Domain)
+		h.Parent.logRequest(r, false, 429, "ratelimit", r.URL.Hostname())
 	}
 	return err
 }

src/mod/dynamicproxy/router.go

@@ -2,6 +2,7 @@ package dynamicproxy
 
 import (
 	"errors"
+	"log"
 	"net/url"
 	"strings"
 
@@ -17,41 +18,18 @@ import (
 
 // Prepare proxy route generate a proxy handler service object for your endpoint
 func (router *Router) PrepareProxyRoute(endpoint *ProxyEndpoint) (*ProxyEndpoint, error) {
-	//Filter the tailing slash if any
-	domain := endpoint.Domain
-	if len(domain) == 0 {
-		return nil, errors.New("invalid endpoint config")
-	}
-	if domain[len(domain)-1:] == "/" {
-		domain = domain[:len(domain)-1]
-	}
-	endpoint.Domain = domain
-
-	//Parse the web proxy endpoint
-	webProxyEndpoint := domain
-	if !strings.HasPrefix("http://", domain) && !strings.HasPrefix("https://", domain) {
-		//TLS is not hardcoded in proxy target domain
-		if endpoint.RequireTLS {
-			webProxyEndpoint = "https://" + webProxyEndpoint
-		} else {
-			webProxyEndpoint = "http://" + webProxyEndpoint
+	for _, thisOrigin := range endpoint.ActiveOrigins {
+		//Create the proxy routing handler
+		err := thisOrigin.StartProxy()
+		if err != nil {
+			log.Println("Unable to setup upstream " + thisOrigin.OriginIpOrDomain + ": " + err.Error())
+			continue
 		}
 	}
 
-	//Create a new proxy agent for this root
-	path, err := url.Parse(webProxyEndpoint)
-	if err != nil {
-		return nil, err
-	}
-
-	//Create the proxy routing handler
-	proxy := dpcore.NewDynamicProxyCore(path, "", &dpcore.DpcoreOptions{
-		IgnoreTLSVerification: endpoint.SkipCertValidations,
-	})
-	endpoint.proxy = proxy
 	endpoint.parent = router
 
-	//Prepare proxy routing hjandler for each of the virtual directories
+	//Prepare proxy routing handler for each of the virtual directories
 	for _, vdir := range endpoint.VirtualDirectories {
 		domain := vdir.Domain
 		if len(domain) == 0 {
@@ -63,7 +41,7 @@ func (router *Router) PrepareProxyRoute(endpoint *ProxyEndpoint) (*ProxyEndpoint
 		}
 
 		//Parse the web proxy endpoint
-		webProxyEndpoint = domain
+		webProxyEndpoint := domain
 		if !strings.HasPrefix("http://", domain) && !strings.HasPrefix("https://", domain) {
 			//TLS is not hardcoded in proxy target domain
 			if vdir.RequireTLS {
@@ -90,7 +68,7 @@ func (router *Router) PrepareProxyRoute(endpoint *ProxyEndpoint) (*ProxyEndpoint
 
 // Add Proxy Route to current runtime. Call to PrepareProxyRoute before adding to runtime
 func (router *Router) AddProxyRouteToRuntime(endpoint *ProxyEndpoint) error {
-	if endpoint.proxy == nil {
+	if !router.loadBalancer.UpstreamsReady(endpoint.ActiveOrigins) {
 		//This endpoint is not prepared
 		return errors.New("proxy endpoint not ready. Use PrepareProxyRoute before adding to runtime")
 	}
@@ -101,7 +79,7 @@ func (router *Router) AddProxyRouteToRuntime(endpoint *ProxyEndpoint) error {
 
 // Set given Proxy Route as Root. Call to PrepareProxyRoute before adding to runtime
 func (router *Router) SetProxyRouteAsRoot(endpoint *ProxyEndpoint) error {
-	if endpoint.proxy == nil {
+	if !router.loadBalancer.UpstreamsReady(endpoint.ActiveOrigins) {
 		//This endpoint is not prepared
 		return errors.New("proxy endpoint not ready. Use PrepareProxyRoute before adding to runtime")
 	}

src/mod/dynamicproxy/typedef.go

@@ -8,6 +8,7 @@ import (
 
 	"imuslab.com/zoraxy/mod/access"
 	"imuslab.com/zoraxy/mod/dynamicproxy/dpcore"
+	"imuslab.com/zoraxy/mod/dynamicproxy/loadbalance"
 	"imuslab.com/zoraxy/mod/dynamicproxy/permissionpolicy"
 	"imuslab.com/zoraxy/mod/dynamicproxy/redirection"
 	"imuslab.com/zoraxy/mod/geodb"
@@ -25,23 +26,26 @@ type ProxyHandler struct {
 	Parent *Router
 }
 
+/* Router Object Options */
 type RouterOption struct {
-	HostUUID           string //The UUID of Zoraxy, use for heading mod
-	HostVersion        string //The version of Zoraxy, use for heading mod
-	Port               int    //Incoming port
-	UseTls             bool   //Use TLS to serve incoming requsts
-	ForceTLSLatest     bool   //Force TLS1.2 or above
-	NoCache            bool   //Force set Cache-Control: no-store
-	ListenOnPort80     bool   //Enable port 80 http listener
-	ForceHttpsRedirect bool   //Force redirection of http to https endpoint
-	TlsManager         *tlscert.Manager
-	RedirectRuleTable  *redirection.RuleTable
-	GeodbStore         *geodb.Store       //GeoIP resolver
-	AccessController   *access.Controller //Blacklist / whitelist controller
-	StatisticCollector *statistic.Collector
-	WebDirectory       string //The static web server directory containing the templates folder
+	HostUUID           string                    //The UUID of Zoraxy, use for heading mod
+	HostVersion        string                    //The version of Zoraxy, use for heading mod
+	Port               int                       //Incoming port
+	UseTls             bool                      //Use TLS to serve incoming requsts
+	ForceTLSLatest     bool                      //Force TLS1.2 or above
+	NoCache            bool                      //Force set Cache-Control: no-store
+	ListenOnPort80     bool                      //Enable port 80 http listener
+	ForceHttpsRedirect bool                      //Force redirection of http to https endpoint
+	TlsManager         *tlscert.Manager          //TLS manager for serving SAN certificates
+	RedirectRuleTable  *redirection.RuleTable    //Redirection rules handler and table
+	GeodbStore         *geodb.Store              //GeoIP resolver
+	AccessController   *access.Controller        //Blacklist / whitelist controller
+	StatisticCollector *statistic.Collector      //Statistic collector for storing stats on incoming visitors
+	WebDirectory       string                    //The static web server directory containing the templates folder
+	LoadBalancer       *loadbalance.RouteManager //Load balancer that handle load balancing of proxy target
 }
 
+/* Router Object */
 type Router struct {
 	Option         *RouterOption
 	ProxyEndpoints *sync.Map
@@ -50,6 +54,7 @@ type Router struct {
 	mux            http.Handler
 	server         *http.Server
 	tlsListener    net.Listener
+	loadBalancer   *loadbalance.RouteManager //Load balancer routing manager
 	routingRules   []*RoutingRule
 
 	tlsRedirectStop  chan bool              //Stop channel for tls redirection server
@@ -57,6 +62,7 @@ type Router struct {
 	rateLimitCounter RequestCountPerIpTable //Request counter for rate limter
 }
 
+/* Basic Auth Related Data structure*/
 // Auth credential for basic auth on certain endpoints
 type BasicAuthCredentials struct {
 	Username     string
@@ -74,6 +80,7 @@ type BasicAuthExceptionRule struct {
 	PathPrefix string
 }
 
+/* Custom Header Related Data structure */
 // Header injection direction type
 type HeaderDirection int
 
@@ -90,6 +97,8 @@ type UserDefinedHeader struct {
 	IsRemove  bool //Instead of set, remove this key instead
 }
 
+/* Routing Rule Data Structures */
+
 // A Virtual Directory endpoint, provide a subset of ProxyEndpoint for better
 // program structure than directly using ProxyEndpoint
 type VirtualDirectoryEndpoint struct {
@@ -104,16 +113,17 @@ type VirtualDirectoryEndpoint struct {
 
 // A proxy endpoint record, a general interface for handling inbound routing
 type ProxyEndpoint struct {
-	ProxyType            int      //The type of this proxy, see const def
-	RootOrMatchingDomain string   //Matching domain for host, also act as key
-	MatchingDomainAlias  []string //A list of domains that alias to this rule
-	Domain               string   //Domain or IP to proxy to
+	ProxyType            int                     //The type of this proxy, see const def
+	RootOrMatchingDomain string                  //Matching domain for host, also act as key
+	MatchingDomainAlias  []string                //A list of domains that alias to this rule
+	ActiveOrigins        []*loadbalance.Upstream //Activated Upstream or origin servers IP or domain to proxy to
+	InactiveOrigins      []*loadbalance.Upstream //Disabled Upstream or origin servers IP or domain to proxy to
+	UseStickySession     bool                    //Use stick session for load balancing
+	UseActiveLoadBalance bool                    //Use active loadbalancing, default passive
+	Disabled             bool                    //If the rule is disabled
 
-	//TLS/SSL Related
-	RequireTLS               bool //Target domain require TLS
-	BypassGlobalTLS          bool //Bypass global TLS setting options if TLS Listener enabled (parent.tlsListener != nil)
-	SkipCertValidations      bool //Set to true to accept self signed certs
-	SkipWebSocketOriginCheck bool //Skip origin check on websocket upgrade connections
+	//Inbound TLS/SSL Related
+	BypassGlobalTLS bool //Bypass global TLS setting options if TLS Listener enabled (parent.tlsListener != nil)
 
 	//Virtual Directories
 	VirtualDirectories []*VirtualDirectoryEndpoint
@@ -136,15 +146,12 @@ type ProxyEndpoint struct {
 	//Access Control
 	AccessFilterUUID string //Access filter ID
 
-	Disabled bool //If the rule is disabled
-
 	//Fallback routing logic (Special Rule Sets Only)
 	DefaultSiteOption int    //Fallback routing logic options
 	DefaultSiteValue  string //Fallback routing target, optional
 
 	//Internal Logic Elements
-	parent *Router              `json:"-"`
-	proxy  *dpcore.ReverseProxy `json:"-"`
+	parent *Router `json:"-"`
 }
 
 /*

src/mod/update/update.go

@@ -0,0 +1,44 @@
+package update
+
+/*
+	Update.go
+
+	This module handle cross version updates that contains breaking changes
+	update command should always exit after the update is completed
+*/
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	v308 "imuslab.com/zoraxy/mod/update/v308"
+)
+
+// Run config update. Version numbers are int. For example
+// to update 3.0.7 to 3.0.8, use RunConfigUpdate(307, 308)
+// This function support cross versions updates (e.g. 307 -> 310)
+func RunConfigUpdate(fromVersion int, toVersion int) {
+	for i := fromVersion; i < toVersion; i++ {
+		oldVersion := fromVersion
+		newVersion := fromVersion + 1
+		fmt.Println("Updating from v", oldVersion, " to v", newVersion)
+		runUpdateRoutineWithVersion(oldVersion, newVersion)
+	}
+	fmt.Println("Update completed")
+}
+
+func GetVersionIntFromVersionNumber(version string) int {
+	versionNumberOnly := strings.ReplaceAll(version, ".", "")
+	versionInt, _ := strconv.Atoi(versionNumberOnly)
+	return versionInt
+}
+
+func runUpdateRoutineWithVersion(fromVersion int, toVersion int) {
+	if fromVersion == 307 && toVersion == 308 {
+		err := v308.UpdateFrom307To308()
+		if err != nil {
+			panic(err)
+		}
+	}
+}

src/mod/update/v308/typedef307.go

@@ -0,0 +1,138 @@
+package v308
+
+/*
+	v307 type definations
+
+	This file wrap up the self-contained data structure
+	for v3.0.7 structure and allow automatic updates
+	for future releases if required
+*/
+
+type v307PermissionsPolicy struct {
+	Accelerometer              []string `json:"accelerometer"`
+	AmbientLightSensor         []string `json:"ambient_light_sensor"`
+	Autoplay                   []string `json:"autoplay"`
+	Battery                    []string `json:"battery"`
+	Camera                     []string `json:"camera"`
+	CrossOriginIsolated        []string `json:"cross_origin_isolated"`
+	DisplayCapture             []string `json:"display_capture"`
+	DocumentDomain             []string `json:"document_domain"`
+	EncryptedMedia             []string `json:"encrypted_media"`
+	ExecutionWhileNotRendered  []string `json:"execution_while_not_rendered"`
+	ExecutionWhileOutOfView    []string `json:"execution_while_out_of_viewport"`
+	Fullscreen                 []string `json:"fullscreen"`
+	Geolocation                []string `json:"geolocation"`
+	Gyroscope                  []string `json:"gyroscope"`
+	KeyboardMap                []string `json:"keyboard_map"`
+	Magnetometer               []string `json:"magnetometer"`
+	Microphone                 []string `json:"microphone"`
+	Midi                       []string `json:"midi"`
+	NavigationOverride         []string `json:"navigation_override"`
+	Payment                    []string `json:"payment"`
+	PictureInPicture           []string `json:"picture_in_picture"`
+	PublicKeyCredentialsGet    []string `json:"publickey_credentials_get"`
+	ScreenWakeLock             []string `json:"screen_wake_lock"`
+	SyncXHR                    []string `json:"sync_xhr"`
+	USB                        []string `json:"usb"`
+	WebShare                   []string `json:"web_share"`
+	XRSpatialTracking          []string `json:"xr_spatial_tracking"`
+	ClipboardRead              []string `json:"clipboard_read"`
+	ClipboardWrite             []string `json:"clipboard_write"`
+	Gamepad                    []string `json:"gamepad"`
+	SpeakerSelection           []string `json:"speaker_selection"`
+	ConversionMeasurement      []string `json:"conversion_measurement"`
+	FocusWithoutUserActivation []string `json:"focus_without_user_activation"`
+	HID                        []string `json:"hid"`
+	IdleDetection              []string `json:"idle_detection"`
+	InterestCohort             []string `json:"interest_cohort"`
+	Serial                     []string `json:"serial"`
+	SyncScript                 []string `json:"sync_script"`
+	TrustTokenRedemption       []string `json:"trust_token_redemption"`
+	Unload                     []string `json:"unload"`
+	WindowPlacement            []string `json:"window_placement"`
+	VerticalScroll             []string `json:"vertical_scroll"`
+}
+
+// Auth credential for basic auth on certain endpoints
+type v307BasicAuthCredentials struct {
+	Username     string
+	PasswordHash string
+}
+
+// Auth credential for basic auth on certain endpoints
+type v307BasicAuthUnhashedCredentials struct {
+	Username string
+	Password string
+}
+
+// Paths to exclude in basic auth enabled proxy handler
+type v307BasicAuthExceptionRule struct {
+	PathPrefix string
+}
+
+// Header injection direction type
+type v307HeaderDirection int
+
+const (
+	HeaderDirection_ZoraxyToUpstream   v307HeaderDirection = 0 //Inject (or remove) header to request out-going from Zoraxy to backend server
+	HeaderDirection_ZoraxyToDownstream v307HeaderDirection = 1 //Inject (or remove) header to request out-going from Zoraxy to client (e.g. browser)
+)
+
+// User defined headers to add into a proxy endpoint
+type v307UserDefinedHeader struct {
+	Direction v307HeaderDirection
+	Key       string
+	Value     string
+	IsRemove  bool //Instead of set, remove this key instead
+}
+
+// The original proxy endpoint structure from v3.0.7
+type v307ProxyEndpoint struct {
+	ProxyType            int      //The type of this proxy, see const def
+	RootOrMatchingDomain string   //Matching domain for host, also act as key
+	MatchingDomainAlias  []string //A list of domains that alias to this rule
+	Domain               string   //Domain or IP to proxy to
+
+	//TLS/SSL Related
+	RequireTLS               bool //Target domain require TLS
+	BypassGlobalTLS          bool //Bypass global TLS setting options if TLS Listener enabled (parent.tlsListener != nil)
+	SkipCertValidations      bool //Set to true to accept self signed certs
+	SkipWebSocketOriginCheck bool //Skip origin check on websocket upgrade connections
+
+	//Virtual Directories
+	VirtualDirectories []*v307VirtualDirectoryEndpoint
+
+	//Custom Headers
+	UserDefinedHeaders           []*v307UserDefinedHeader //Custom headers to append when proxying requests from this endpoint
+	HSTSMaxAge                   int64                    //HSTS max age, set to 0 for disable HSTS headers
+	EnablePermissionPolicyHeader bool                     //Enable injection of permission policy header
+	PermissionPolicy             *v307PermissionsPolicy   //Permission policy header
+
+	//Authentication
+	RequireBasicAuth        bool                          //Set to true to request basic auth before proxy
+	BasicAuthCredentials    []*v307BasicAuthCredentials   //Basic auth credentials
+	BasicAuthExceptionRules []*v307BasicAuthExceptionRule //Path to exclude in a basic auth enabled proxy target
+
+	// Rate Limiting
+	RequireRateLimit bool
+	RateLimit        int64 // Rate limit in requests per second
+
+	//Access Control
+	AccessFilterUUID string //Access filter ID
+
+	Disabled bool //If the rule is disabled
+
+	//Fallback routing logic (Special Rule Sets Only)
+	DefaultSiteOption int    //Fallback routing logic options
+	DefaultSiteValue  string //Fallback routing target, optional
+}
+
+// A Virtual Directory endpoint, provide a subset of ProxyEndpoint for better
+// program structure than directly using ProxyEndpoint
+type v307VirtualDirectoryEndpoint struct {
+	MatchingPath        string //Matching prefix of the request path, also act as key
+	Domain              string //Domain or IP to proxy to
+	RequireTLS          bool   //Target domain require TLS
+	SkipCertValidations bool   //Set to true to accept self signed certs
+	Disabled            bool   //If the rule is enabled
+}

src/mod/update/v308/typedef308.go

@@ -0,0 +1,63 @@
+package v308
+
+/*
+	v308 type definations
+
+	This file wrap up the self-contained data structure
+	for v3.0.8 structure and allow automatic updates
+	for future releases if required
+
+	Some struct are identical as v307 and hence it is not redefined here
+*/
+
+/* Upstream or Origin Server */
+type v308Upstream struct {
+	//Upstream Proxy Configs
+	OriginIpOrDomain         string //Target IP address or domain name with port
+	RequireTLS               bool   //Require TLS connection
+	SkipCertValidations      bool   //Set to true to accept self signed certs
+	SkipWebSocketOriginCheck bool   //Skip origin check on websocket upgrade connections
+
+	//Load balancing configs
+	Weight  int //Prirotiy of fallback, set all to 0 for round robin
+	MaxConn int //Maxmium connection to this server
+}
+
+// A proxy endpoint record, a general interface for handling inbound routing
+type v308ProxyEndpoint struct {
+	ProxyType            int             //The type of this proxy, see const def
+	RootOrMatchingDomain string          //Matching domain for host, also act as key
+	MatchingDomainAlias  []string        //A list of domains that alias to this rule
+	ActiveOrigins        []*v308Upstream //Activated Upstream or origin servers IP or domain to proxy to
+	InactiveOrigins      []*v308Upstream //Disabled Upstream or origin servers IP or domain to proxy to
+	UseStickySession     bool            //Use stick session for load balancing
+	Disabled             bool            //If the rule is disabled
+
+	//Inbound TLS/SSL Related
+	BypassGlobalTLS bool //Bypass global TLS setting options if TLS Listener enabled (parent.tlsListener != nil)
+
+	//Virtual Directories
+	VirtualDirectories []*v307VirtualDirectoryEndpoint
+
+	//Custom Headers
+	UserDefinedHeaders           []*v307UserDefinedHeader //Custom headers to append when proxying requests from this endpoint
+	HSTSMaxAge                   int64                    //HSTS max age, set to 0 for disable HSTS headers
+	EnablePermissionPolicyHeader bool                     //Enable injection of permission policy header
+	PermissionPolicy             *v307PermissionsPolicy   //Permission policy header
+
+	//Authentication
+	RequireBasicAuth        bool                          //Set to true to request basic auth before proxy
+	BasicAuthCredentials    []*v307BasicAuthCredentials   //Basic auth credentials
+	BasicAuthExceptionRules []*v307BasicAuthExceptionRule //Path to exclude in a basic auth enabled proxy target
+
+	// Rate Limiting
+	RequireRateLimit bool
+	RateLimit        int64 // Rate limit in requests per second
+
+	//Access Control
+	AccessFilterUUID string //Access filter ID
+
+	//Fallback routing logic (Special Rule Sets Only)
+	DefaultSiteOption int    //Fallback routing logic options
+	DefaultSiteValue  string //Fallback routing target, optional
+}

src/mod/update/v308/v308.go

@@ -0,0 +1,132 @@
+package v308
+
+import (
+	"encoding/json"
+	"io"
+	"log"
+	"os"
+	"path/filepath"
+)
+
+/*
+
+	v3.0.7 update to v3.0.8
+
+	This update function
+*/
+
+// Update proxy config files from v3.0.7 to v3.0.8
+func UpdateFrom307To308() error {
+
+	//Load the configs
+	oldConfigFiles, err := filepath.Glob("./conf/proxy/*.config")
+	if err != nil {
+		return err
+	}
+
+	//Backup all the files
+	err = os.MkdirAll("./conf/proxy.old/", 0775)
+	if err != nil {
+		return err
+	}
+
+	for _, oldConfigFile := range oldConfigFiles {
+		// Extract the file name from the path
+		fileName := filepath.Base(oldConfigFile)
+		// Construct the backup file path
+		backupFile := filepath.Join("./conf/proxy.old/", fileName)
+
+		// Copy the file to the backup directory
+		err := copyFile(oldConfigFile, backupFile)
+		if err != nil {
+			return err
+		}
+	}
+
+	//read the config into the old struct
+	for _, oldConfigFile := range oldConfigFiles {
+		configContent, err := os.ReadFile(oldConfigFile)
+		if err != nil {
+			log.Println("Unable to read config file "+filepath.Base(oldConfigFile), err.Error())
+			continue
+		}
+
+		thisOldConfigStruct := v307ProxyEndpoint{}
+		err = json.Unmarshal(configContent, &thisOldConfigStruct)
+		if err != nil {
+			log.Println("Unable to parse file "+filepath.Base(oldConfigFile), err.Error())
+			continue
+		}
+
+		//Convert the old config to new config
+		newProxyStructure := convertV307ToV308(thisOldConfigStruct)
+		js, _ := json.MarshalIndent(newProxyStructure, "", "    ")
+		err = os.WriteFile(oldConfigFile, js, 0775)
+		if err != nil {
+			log.Println(err.Error())
+			continue
+		}
+	}
+
+	return nil
+}
+
+func convertV307ToV308(old v307ProxyEndpoint) v308ProxyEndpoint {
+	// Create a new v308ProxyEndpoint instance
+
+	matchingDomainsSlice := old.MatchingDomainAlias
+	if matchingDomainsSlice == nil {
+		matchingDomainsSlice = []string{}
+	}
+
+	newEndpoint := v308ProxyEndpoint{
+		ProxyType:            old.ProxyType,
+		RootOrMatchingDomain: old.RootOrMatchingDomain,
+		MatchingDomainAlias:  matchingDomainsSlice,
+		ActiveOrigins: []*v308Upstream{{ // Mapping Domain field to v308Upstream struct
+			OriginIpOrDomain:         old.Domain,
+			RequireTLS:               old.RequireTLS,
+			SkipCertValidations:      old.SkipCertValidations,
+			SkipWebSocketOriginCheck: old.SkipWebSocketOriginCheck,
+			Weight:                   1,
+			MaxConn:                  0,
+		}},
+		InactiveOrigins:              []*v308Upstream{},
+		UseStickySession:             false,
+		Disabled:                     old.Disabled,
+		BypassGlobalTLS:              old.BypassGlobalTLS,
+		VirtualDirectories:           old.VirtualDirectories,
+		UserDefinedHeaders:           old.UserDefinedHeaders,
+		HSTSMaxAge:                   old.HSTSMaxAge,
+		EnablePermissionPolicyHeader: old.EnablePermissionPolicyHeader,
+		PermissionPolicy:             old.PermissionPolicy,
+		RequireBasicAuth:             old.RequireBasicAuth,
+		BasicAuthCredentials:         old.BasicAuthCredentials,
+		BasicAuthExceptionRules:      old.BasicAuthExceptionRules,
+		RequireRateLimit:             old.RequireRateLimit,
+		RateLimit:                    old.RateLimit,
+		AccessFilterUUID:             old.AccessFilterUUID,
+		DefaultSiteOption:            old.DefaultSiteOption,
+		DefaultSiteValue:             old.DefaultSiteValue,
+	}
+
+	return newEndpoint
+}
+
+// Helper function to copy files
+func copyFile(src, dst string) error {
+	sourceFile, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer sourceFile.Close()
+
+	destinationFile, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer destinationFile.Close()
+
+	_, err = io.Copy(destinationFile, sourceFile)
+	return err
+}

src/mod/uptime/uptime.go

@@ -23,11 +23,19 @@ type Record struct {
 	Latency    int64
 }
 
+type ProxyType string
+
+const (
+	ProxyType_Host ProxyType = "Origin Server"
+	ProxyType_Vdir ProxyType = "Virtual Directory"
+)
+
 type Target struct {
-	ID       string
-	Name     string
-	URL      string
-	Protocol string
+	ID        string
+	Name      string
+	URL       string
+	Protocol  string
+	ProxyType ProxyType
 }
 
 type Config struct {

src/mod/utils/utils.go

@@ -3,6 +3,7 @@ package utils
 import (
 	"errors"
 	"log"
+	"net"
 	"net/http"
 	"os"
 	"strconv"
@@ -141,3 +142,35 @@ func StringInArrayIgnoreCase(arr []string, str string) bool {
 
 	return StringInArray(smallArray, strings.ToLower(str))
 }
+
+// Validate if the listening address is correct
+func ValidateListeningAddress(address string) bool {
+	// Check if the address starts with a colon, indicating it's just a port
+	if strings.HasPrefix(address, ":") {
+		return true
+	}
+
+	// Split the address into host and port parts
+	host, port, err := net.SplitHostPort(address)
+	if err != nil {
+		// Try to parse it as just a port
+		if _, err := strconv.Atoi(address); err == nil {
+			return false // It's just a port number
+		}
+		return false // It's an invalid address
+	}
+
+	// Check if the port part is a valid number
+	if _, err := strconv.Atoi(port); err != nil {
+		return false
+	}
+
+	// Check if the host part is a valid IP address or empty (indicating any IP)
+	if host != "" {
+		if net.ParseIP(host) == nil {
+			return false
+		}
+	}
+
+	return true
+}

src/reverseproxy.go

@@ -11,6 +11,7 @@ import (
 
 	"imuslab.com/zoraxy/mod/auth"
 	"imuslab.com/zoraxy/mod/dynamicproxy"
+	"imuslab.com/zoraxy/mod/dynamicproxy/loadbalance"
 	"imuslab.com/zoraxy/mod/dynamicproxy/permissionpolicy"
 	"imuslab.com/zoraxy/mod/uptime"
 	"imuslab.com/zoraxy/mod/utils"
@@ -96,6 +97,7 @@ func ReverseProxtInit() {
 		StatisticCollector: statisticCollector,
 		WebDirectory:       *staticWebServerRoot,
 		AccessController:   accessController,
+		LoadBalancer:       loadBalancer,
 	})
 	if err != nil {
 		SystemWideLogger.PrintAndLog("Proxy", "Unable to create dynamic proxy router", err)
@@ -145,9 +147,6 @@ func ReverseProxtInit() {
 			MaxRecordsStore: 288, //1 day
 		})
 
-		//Pass the pointer of this uptime monitor into the load balancer
-		loadbalancer.Options.UptimeMonitor = uptimeMonitor
-
 		SystemWideLogger.Println("Uptime Monitor background service started")
 	}()
 }
@@ -319,13 +318,21 @@ func ReverseProxyHandleAddEndpoint(w http.ResponseWriter, r *http.Request) {
 			ProxyType:            dynamicproxy.ProxyType_Host,
 			RootOrMatchingDomain: rootOrMatchingDomain,
 			MatchingDomainAlias:  aliasHostnames,
-			Domain:               endpoint,
+			ActiveOrigins: []*loadbalance.Upstream{
+				{
+					OriginIpOrDomain:         endpoint,
+					RequireTLS:               useTLS,
+					SkipCertValidations:      skipTlsValidation,
+					SkipWebSocketOriginCheck: bypassWebsocketOriginCheck,
+					Weight:                   1,
+				},
+			},
+			InactiveOrigins:  []*loadbalance.Upstream{},
+			UseStickySession: false, //TODO: Move options to webform
+
 			//TLS
-			RequireTLS:               useTLS,
-			BypassGlobalTLS:          useBypassGlobalTLS,
-			SkipCertValidations:      skipTlsValidation,
-			SkipWebSocketOriginCheck: bypassWebsocketOriginCheck,
-			AccessFilterUUID:         accessRuleID,
+			BypassGlobalTLS:  useBypassGlobalTLS,
+			AccessFilterUUID: accessRuleID,
 			//VDir
 			VirtualDirectories: []*dynamicproxy.VirtualDirectoryEndpoint{},
 			//Custom headers
@@ -375,14 +382,19 @@ func ReverseProxyHandleAddEndpoint(w http.ResponseWriter, r *http.Request) {
 
 		//Write the root options to file
 		rootRoutingEndpoint := dynamicproxy.ProxyEndpoint{
-			ProxyType:                dynamicproxy.ProxyType_Root,
-			RootOrMatchingDomain:     "/",
-			Domain:                   endpoint,
-			RequireTLS:               useTLS,
-			BypassGlobalTLS:          false,
-			SkipCertValidations:      false,
-			SkipWebSocketOriginCheck: true,
-
+			ProxyType:            dynamicproxy.ProxyType_Root,
+			RootOrMatchingDomain: "/",
+			ActiveOrigins: []*loadbalance.Upstream{
+				{
+					OriginIpOrDomain:         endpoint,
+					RequireTLS:               useTLS,
+					SkipCertValidations:      true,
+					SkipWebSocketOriginCheck: true,
+					Weight:                   1,
+				},
+			},
+			InactiveOrigins:   []*loadbalance.Upstream{},
+			BypassGlobalTLS:   false,
 			DefaultSiteOption: defaultSiteOption,
 			DefaultSiteValue:  dsVal,
 		}
@@ -392,7 +404,11 @@ func ReverseProxyHandleAddEndpoint(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 
-		dynamicProxyRouter.SetProxyRouteAsRoot(preparedRootProxyRoute)
+		err = dynamicProxyRouter.SetProxyRouteAsRoot(preparedRootProxyRoute)
+		if err != nil {
+			utils.SendErrorResponse(w, "unable to update default site: "+err.Error())
+			return
+		}
 		proxyEndpointCreated = &rootRoutingEndpoint
 	} else {
 		//Invalid eptype
@@ -426,24 +442,12 @@ func ReverseProxyHandleEditEndpoint(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	endpoint, err := utils.PostPara(r, "ep")
-	if err != nil {
-		utils.SendErrorResponse(w, "endpoint not defined")
-		return
-	}
-
 	tls, _ := utils.PostPara(r, "tls")
 	if tls == "" {
 		tls = "false"
 	}
 
-	useTLS := (tls == "true")
-
-	stv, _ := utils.PostPara(r, "tlsval")
-	if stv == "" {
-		stv = "false"
-	}
-	skipTlsValidation := (stv == "true")
+	useStickySession, _ := utils.PostBool(r, "ss")
 
 	//Load bypass TLS option
 	bpgtls, _ := utils.PostPara(r, "bpgtls")
@@ -475,20 +479,22 @@ func ReverseProxyHandleEditEndpoint(w http.ResponseWriter, r *http.Request) {
 		utils.SendErrorResponse(w, "invalid rate limit number")
 		return
 	}
-	
-	if  requireRateLimit && proxyRateLimit <= 0 {
+
+	if requireRateLimit && proxyRateLimit <= 0 {
 		utils.SendErrorResponse(w, "rate limit number must be greater than 0")
 		return
-	}else if proxyRateLimit < 0 {
+	} else if proxyRateLimit < 0 {
 		proxyRateLimit = 1000
 	}
 
 	// Bypass WebSocket Origin Check
-	strbpwsorg, _ := utils.PostPara(r, "bpwsorg")
-	if strbpwsorg == "" {
-		strbpwsorg = "false"
-	}
-	bypassWebsocketOriginCheck := (strbpwsorg == "true")
+	/*
+		strbpwsorg, _ := utils.PostPara(r, "bpwsorg")
+		if strbpwsorg == "" {
+			strbpwsorg = "false"
+		}
+		bypassWebsocketOriginCheck := (strbpwsorg == "true")
+	*/
 
 	//Load the previous basic auth credentials from current proxy rules
 	targetProxyEntry, err := dynamicProxyRouter.LoadProxy(rootNameOrMatchingDomain)
@@ -499,14 +505,16 @@ func ReverseProxyHandleEditEndpoint(w http.ResponseWriter, r *http.Request) {
 
 	//Generate a new proxyEndpoint from the new config
 	newProxyEndpoint := dynamicproxy.CopyEndpoint(targetProxyEntry)
-	newProxyEndpoint.Domain = endpoint
-	newProxyEndpoint.RequireTLS = useTLS
+	//TODO: Move these into dedicated module
+	//newProxyEndpoint.Domain = endpoint
+	//newProxyEndpoint.RequireTLS = useTLS
+	//newProxyEndpoint.SkipCertValidations = skipTlsValidation
+	//newProxyEndpoint.SkipWebSocketOriginCheck = bypassWebsocketOriginCheck
 	newProxyEndpoint.BypassGlobalTLS = bypassGlobalTLS
-	newProxyEndpoint.SkipCertValidations = skipTlsValidation
 	newProxyEndpoint.RequireBasicAuth = requireBasicAuth
 	newProxyEndpoint.RequireRateLimit = requireRateLimit
 	newProxyEndpoint.RateLimit = proxyRateLimit
-	newProxyEndpoint.SkipWebSocketOriginCheck = bypassWebsocketOriginCheck
+	newProxyEndpoint.UseStickySession = useStickySession
 
 	//Prepare to replace the current routing rule
 	readyRoutingRule, err := dynamicProxyRouter.PrepareProxyRoute(newProxyEndpoint)
@@ -939,7 +947,7 @@ func ReverseProxyList(w http.ResponseWriter, r *http.Request) {
 		})
 
 		sort.Slice(results, func(i, j int) bool {
-			return results[i].Domain < results[j].Domain
+			return results[i].RootOrMatchingDomain < results[j].RootOrMatchingDomain
 		})
 
 		js, _ := json.Marshal(results)
@@ -1059,15 +1067,20 @@ func HandleIncomingPortSet(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	rootProxyTargetOrigin := ""
+	if len(dynamicProxyRouter.Root.ActiveOrigins) > 0 {
+		rootProxyTargetOrigin = dynamicProxyRouter.Root.ActiveOrigins[0].OriginIpOrDomain
+	}
+
 	//Check if it is identical as proxy root (recursion!)
-	if dynamicProxyRouter.Root == nil || dynamicProxyRouter.Root.Domain == "" {
+	if dynamicProxyRouter.Root == nil || rootProxyTargetOrigin == "" {
 		//Check if proxy root is set before checking recursive listen
 		//Fixing issue #43
 		utils.SendErrorResponse(w, "Set Proxy Root before changing inbound port")
 		return
 	}
 
-	proxyRoot := strings.TrimSuffix(dynamicProxyRouter.Root.Domain, "/")
+	proxyRoot := strings.TrimSuffix(rootProxyTargetOrigin, "/")
 	if strings.EqualFold(proxyRoot, "localhost:"+strconv.Itoa(newIncomingPortInt)) || strings.EqualFold(proxyRoot, "127.0.0.1:"+strconv.Itoa(newIncomingPortInt)) {
 		//Listening port is same as proxy root
 		//Not allow recursive settings

src/start.go

@@ -102,10 +102,11 @@ func startupSequence() {
 		panic(err)
 	}
 
-	//Create a load balance route manager
-	loadbalancer = loadbalance.NewRouteManager(&loadbalance.Options{
-		Geodb: geodbStore,
-	}, SystemWideLogger)
+	//Create a load balancer
+	loadBalancer = loadbalance.NewLoadBalancer(&loadbalance.Options{
+		Geodb:  geodbStore,
+		Logger: SystemWideLogger,
+	})
 
 	//Create the access controller
 	accessController, err = access.NewAccessController(&access.Options{
@@ -291,5 +292,4 @@ func finalSequence() {
 
 	//Inject routing rules
 	registerBuildInRoutingRules()
-
 }

src/upstreams.go

@@ -0,0 +1,274 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+	"sort"
+	"strings"
+
+	"imuslab.com/zoraxy/mod/dynamicproxy/loadbalance"
+	"imuslab.com/zoraxy/mod/utils"
+)
+
+/*
+	Upstreams.go
+
+	This script handle upstream and load balancer
+	related API
+*/
+
+// List upstreams from a endpoint
+func ReverseProxyUpstreamList(w http.ResponseWriter, r *http.Request) {
+	endpoint, err := utils.PostPara(r, "ep")
+	if err != nil {
+		utils.SendErrorResponse(w, "endpoint not defined")
+		return
+	}
+
+	targetEndpoint, err := dynamicProxyRouter.LoadProxy(endpoint)
+	if err != nil {
+		utils.SendErrorResponse(w, "target endpoint not found")
+		return
+	}
+
+	activeUpstreams := targetEndpoint.ActiveOrigins
+	inactiveUpstreams := targetEndpoint.InactiveOrigins
+	// Sort the upstreams slice by weight, then by origin domain alphabetically
+	sort.Slice(activeUpstreams, func(i, j int) bool {
+		if activeUpstreams[i].Weight != activeUpstreams[j].Weight {
+			return activeUpstreams[i].Weight > activeUpstreams[j].Weight
+		}
+		return activeUpstreams[i].OriginIpOrDomain < activeUpstreams[j].OriginIpOrDomain
+	})
+
+	sort.Slice(inactiveUpstreams, func(i, j int) bool {
+		if inactiveUpstreams[i].Weight != inactiveUpstreams[j].Weight {
+			return inactiveUpstreams[i].Weight > inactiveUpstreams[j].Weight
+		}
+		return inactiveUpstreams[i].OriginIpOrDomain < inactiveUpstreams[j].OriginIpOrDomain
+	})
+
+	type UpstreamCombinedList struct {
+		ActiveOrigins   []*loadbalance.Upstream
+		InactiveOrigins []*loadbalance.Upstream
+	}
+
+	js, _ := json.Marshal(UpstreamCombinedList{
+		ActiveOrigins:   activeUpstreams,
+		InactiveOrigins: inactiveUpstreams,
+	})
+	utils.SendJSONResponse(w, string(js))
+}
+
+// Add an upstream to a given proxy upstream endpoint
+func ReverseProxyUpstreamAdd(w http.ResponseWriter, r *http.Request) {
+	endpoint, err := utils.PostPara(r, "ep")
+	if err != nil {
+		utils.SendErrorResponse(w, "endpoint not defined")
+		return
+	}
+
+	targetEndpoint, err := dynamicProxyRouter.LoadProxy(endpoint)
+	if err != nil {
+		utils.SendErrorResponse(w, "target endpoint not found")
+		return
+	}
+
+	upstreamOrigin, err := utils.PostPara(r, "origin")
+	if err != nil {
+		utils.SendErrorResponse(w, "upstream origin not set")
+		return
+	}
+	requireTLS, _ := utils.PostBool(r, "tls")
+	skipTlsValidation, _ := utils.PostBool(r, "tlsval")
+	bpwsorg, _ := utils.PostBool(r, "bpwsorg")
+	preactivate, _ := utils.PostBool(r, "active")
+
+	//Create a new upstream object
+	newUpstream := loadbalance.Upstream{
+		OriginIpOrDomain:         upstreamOrigin,
+		RequireTLS:               requireTLS,
+		SkipCertValidations:      skipTlsValidation,
+		SkipWebSocketOriginCheck: bpwsorg,
+		Weight:                   1,
+		MaxConn:                  0,
+	}
+
+	//Add the new upstream to endpoint
+	err = targetEndpoint.AddUpstreamOrigin(&newUpstream, preactivate)
+	if err != nil {
+		utils.SendErrorResponse(w, err.Error())
+		return
+	}
+
+	//Save changes to configs
+	err = SaveReverseProxyConfig(targetEndpoint)
+	if err != nil {
+		SystemWideLogger.PrintAndLog("INFO", "Unable to save new upstream to proxy config", err)
+		utils.SendErrorResponse(w, "Failed to save new upstream config")
+		return
+	}
+
+	utils.SendOK(w)
+}
+
+// Update the connection configuration of this origin
+// pass in the whole new upstream origin json via "payload" POST variable
+// for missing fields, original value will be used instead
+func ReverseProxyUpstreamUpdate(w http.ResponseWriter, r *http.Request) {
+	endpoint, err := utils.PostPara(r, "ep")
+	if err != nil {
+		utils.SendErrorResponse(w, "endpoint not defined")
+		return
+	}
+
+	targetEndpoint, err := dynamicProxyRouter.LoadProxy(endpoint)
+	if err != nil {
+		utils.SendErrorResponse(w, "target endpoint not found")
+		return
+	}
+
+	//Editing upstream origin IP
+	originIP, err := utils.PostPara(r, "origin")
+	if err != nil {
+		utils.SendErrorResponse(w, "origin ip or matching address not set")
+		return
+	}
+	originIP = strings.TrimSpace(originIP)
+
+	//Update content payload
+	payload, err := utils.PostPara(r, "payload")
+	if err != nil {
+		utils.SendErrorResponse(w, "update payload not set")
+		return
+	}
+
+	isActive, _ := utils.PostBool(r, "active")
+
+	targetUpstream, err := targetEndpoint.GetUpstreamOriginByMatchingIP(originIP)
+	if err != nil {
+		utils.SendErrorResponse(w, err.Error())
+		return
+	}
+
+	//Deep copy the upstream so other request handling goroutine won't be effected
+	newUpstream := targetUpstream.Clone()
+
+	//Overwrite the new value into the old upstream
+	err = json.Unmarshal([]byte(payload), &newUpstream)
+	if err != nil {
+		utils.SendErrorResponse(w, err.Error())
+		return
+	}
+
+	//Replace the old upstream with the new one
+	err = targetEndpoint.RemoveUpstreamOrigin(originIP)
+	if err != nil {
+		utils.SendErrorResponse(w, err.Error())
+		return
+	}
+	err = targetEndpoint.AddUpstreamOrigin(newUpstream, isActive)
+	if err != nil {
+		utils.SendErrorResponse(w, err.Error())
+		return
+	}
+
+	//Save changes to configs
+	err = SaveReverseProxyConfig(targetEndpoint)
+	if err != nil {
+		SystemWideLogger.PrintAndLog("INFO", "Unable to save upstream update to proxy config", err)
+		utils.SendErrorResponse(w, "Failed to save updated upstream config")
+		return
+	}
+	utils.SendOK(w)
+}
+
+func ReverseProxyUpstreamSetPriority(w http.ResponseWriter, r *http.Request) {
+	endpoint, err := utils.PostPara(r, "ep")
+	if err != nil {
+		utils.SendErrorResponse(w, "endpoint not defined")
+		return
+	}
+
+	targetEndpoint, err := dynamicProxyRouter.LoadProxy(endpoint)
+	if err != nil {
+		utils.SendErrorResponse(w, "target endpoint not found")
+		return
+	}
+
+	weight, err := utils.PostInt(r, "weight")
+	if err != nil {
+		utils.SendErrorResponse(w, "priority not defined")
+		return
+	}
+
+	if weight < 0 {
+		utils.SendErrorResponse(w, "invalid weight given")
+		return
+	}
+
+	//Editing upstream origin IP
+	originIP, err := utils.PostPara(r, "origin")
+	if err != nil {
+		utils.SendErrorResponse(w, "origin ip or matching address not set")
+		return
+	}
+	originIP = strings.TrimSpace(originIP)
+
+	editingUpstream, err := targetEndpoint.GetUpstreamOriginByMatchingIP(originIP)
+	editingUpstream.Weight = weight
+	// The editing upstream is a pointer to the runtime object
+	// and the change of weight do not requre a respawn of the proxy object
+	// so no need to remove & re-prepare the upstream on weight changes
+
+	err = SaveReverseProxyConfig(targetEndpoint)
+	if err != nil {
+		SystemWideLogger.PrintAndLog("INFO", "Unable to update upstream weight", err)
+		utils.SendErrorResponse(w, "Failed to update upstream weight")
+		return
+	}
+
+	utils.SendOK(w)
+}
+
+func ReverseProxyUpstreamDelete(w http.ResponseWriter, r *http.Request) {
+	endpoint, err := utils.PostPara(r, "ep")
+	if err != nil {
+		utils.SendErrorResponse(w, "endpoint not defined")
+		return
+	}
+
+	targetEndpoint, err := dynamicProxyRouter.LoadProxy(endpoint)
+	if err != nil {
+		utils.SendErrorResponse(w, "target endpoint not found")
+		return
+	}
+
+	//Editing upstream origin IP
+	originIP, err := utils.PostPara(r, "origin")
+	if err != nil {
+		utils.SendErrorResponse(w, "origin ip or matching address not set")
+		return
+	}
+	originIP = strings.TrimSpace(originIP)
+
+	if !targetEndpoint.UpstreamOriginExists(originIP) {
+		utils.SendErrorResponse(w, "target upstream not found")
+		return
+	}
+
+	err = targetEndpoint.RemoveUpstreamOrigin(originIP)
+	if err != nil {
+		utils.SendErrorResponse(w, err.Error())
+		return
+	}
+	//Save changes to configs
+	err = SaveReverseProxyConfig(targetEndpoint)
+	if err != nil {
+		SystemWideLogger.PrintAndLog("INFO", "Unable to remove upstream", err)
+		utils.SendErrorResponse(w, "Failed to remove upstream from proxy rule")
+		return
+	}
+
+	utils.SendOK(w)
+}

src/vdir.go

@@ -28,7 +28,7 @@ func ReverseProxyListVdir(w http.ResponseWriter, r *http.Request) {
 
 	var targetEndpoint *dynamicproxy.ProxyEndpoint
 	if eptype == "host" {
-		endpoint, err := utils.PostPara(r, "ep") //Support root and host
+		endpoint, err := utils.PostPara(r, "ep")
 		if err != nil {
 			utils.SendErrorResponse(w, "endpoint not defined")
 			return

src/web/components/httprp.html

@@ -51,13 +51,29 @@
                 //Sort by RootOrMatchingDomain field
                 data.sort((a,b) => (a.RootOrMatchingDomain > b.RootOrMatchingDomain) ? 1 : ((b.RootOrMatchingDomain > a.RootOrMatchingDomain) ? -1 : 0))
                 data.forEach(subd => {
-                    let tlsIcon = "";
                     let subdData = encodeURIComponent(JSON.stringify(subd));
-                    if (subd.RequireTLS){
-                        tlsIcon = `<i class="green lock icon" title="TLS Mode"></i>`;
-                        if (subd.SkipCertValidations){
-                            tlsIcon = `<i class="yellow lock icon" title="TLS/SSL mode without verification"></i>`
-                        }
+                    
+                    //Build the upstream list
+                    let upstreams = "";
+                    if (subd.ActiveOrigins.length == 0){
+                        //Invalid config
+                        upstreams = `<i class="ui yellow exclamation triangle icon"></i> No Active Upstream Origin<br>`;
+                    }else{
+                        subd.ActiveOrigins.forEach(upstream => {
+                            console.log(upstream);
+                            //Check if the upstreams require TLS connections
+                            let tlsIcon = "";
+                            if (upstream.RequireTLS){
+                                tlsIcon = `<i class="green lock icon" title="TLS Mode"></i>`;
+                                if (upstream.SkipCertValidations){
+                                    tlsIcon = `<i class="yellow lock icon" title="TLS/SSL mode without verification"></i>`
+                                }
+                            }
+
+                            let upstreamLink = `${upstream.RequireTLS?"https://":"http://"}${upstream.OriginIpOrDomain}`;
+
+                            upstreams += `<a href="${upstreamLink}" target="_blank">${upstream.OriginIpOrDomain} ${tlsIcon}</a><br>`;
+                        })
                     }
 
                     let inboundTlsIcon = "";
@@ -102,7 +118,11 @@
                             ${aliasDomains}
                             <small class="accessRuleNameUnderHost" ruleid="${subd.AccessFilterUUID}"></small>
                         </td>
-                        <td data-label="" editable="true" datatype="domain">${subd.Domain} ${tlsIcon}</td>
+                        <td data-label="" editable="true" datatype="domain">
+                            <div class="upstreamList">
+                                ${upstreams}        
+                            </div>
+                        </td>
                         <td data-label="" editable="true" datatype="vdir">${vdList}</td>
                         <td data-label="" editable="true" datatype="advanced" style="width: 350px;">
                             ${subd.RequireBasicAuth?`<i class="ui green check icon"></i> Basic Auth`:``}
@@ -228,39 +248,21 @@
             var input;
             var datatype = $(this).attr("datatype");
             if (datatype == "domain"){
-                let domain = payload.Domain;
-                //Target require TLS for proxying
-                let tls = payload.RequireTLS;
-                if (tls){
-                    tls = "checked";
-                }else{
-                    tls = "";
+                let useStickySessionChecked = "";
+                if (payload.UseStickySession){
+                    useStickySessionChecked = "checked";
                 }
+                input = `<button class="ui basic compact tiny button" style="margin-left: 0.4em; margin-top: 1em;" onclick="editUpstreams('${uuid}');"><i class="grey server icon"></i> Edit Upstreams</button>
+                <div class="ui divider"></div>
+                <div class="ui checkbox" style="margin-top: 0.4em;">
+                    <input type="checkbox" class="UseStickySession" ${useStickySessionChecked}>
+                    <label>Use Sticky Session<br>
+                        <small>Enable stick session on load balancing</small></label>
+                </div>
 
-                //Require TLS validation
-                let skipTLSValidation = payload.SkipCertValidations;
-                let checkstate = "";
-                if (skipTLSValidation){
-                    checkstate = "checked";
-                }
-
-                input = `
-                    <div class="ui mini fluid input">
-                        <input type="text" class="Domain" onchange="cleanProxyTargetValue(this)" value="${domain}">
-                    </div>
-                    <div class="ui checkbox" style="margin-top: 0.6em;">
-                        <input type="checkbox" class="RequireTLS" ${tls}>
-                        <label>Require TLS<br>
-                            <small>Proxy target require HTTPS connection</small></label>
-                    </div><br>
-                    <div class="ui checkbox" style="margin-top: 0.4em;">
-                        <input type="checkbox" class="SkipCertValidations" ${checkstate}>
-                        <label>Skip Verification<br>
-                        <small>Check this if proxy target is using self signed certificates</small></label>
-                    </div><br>
-                    <!-- <button class="ui basic compact tiny button" style="margin-left: 0.4em; margin-top: 0.4em;" onclick="editLoadBalanceOptions('${uuid}');"><i class="purple server icon"></i> Load Balance</button> -->
                 `;
-                column.empty().append(input);
+                column.append(input);
+                $(column).find(".upstreamList").addClass("editing");
             }else if (datatype == "vdir"){
                 //Append a quick access button for vdir page
                 column.append(`<button class="ui basic tiny button" style="margin-left: 0.4em; margin-top: 0.4em;" onclick="quickEditVdir('${uuid}');">
@@ -311,12 +313,6 @@
                                 Security Options
                             </div>
                             <div class="content">
-                                <div class="ui checkbox" style="margin-top: 0.4em;">
-                                    <input type="checkbox" class="SkipWebSocketOriginCheck" ${wsCheckstate}>
-                                    <label>Skip WebSocket Origin Check<br>
-                                    <small>Check this to allow cross-origin websocket requests</small></label>
-                                </div>
-                                <br>
                                 <div class="ui checkbox" style="margin-top: 0.4em;">
                                     <input type="checkbox" onchange="handleToggleRateLimitInput();" class="RequireRateLimit" ${rateLimitCheckState}>
                                     <label>Require Rate Limit<br>
@@ -399,15 +395,11 @@
         }
         
         var epttype = "host";
-        let newDomain =  $(row).find(".Domain").val();
-        let requireTLS = $(row).find(".RequireTLS")[0].checked;
-        let skipCertValidations = $(row).find(".SkipCertValidations")[0].checked;
+        let useStickySession =  $(row).find(".UseStickySession")[0].checked;
         let requireBasicAuth = $(row).find(".RequireBasicAuth")[0].checked;
         let requireRateLimit = $(row).find(".RequireRateLimit")[0].checked;
         let rateLimit = $(row).find(".RateLimit").val();
         let bypassGlobalTLS = $(row).find(".BypassGlobalTLS")[0].checked;
-        let bypassWebsocketOrigin = $(row).find(".SkipWebSocketOriginCheck")[0].checked;
-        console.log(newDomain, requireTLS, skipCertValidations, requireBasicAuth)
 
         $.ajax({
             url: "/api/proxy/edit",
@@ -415,11 +407,8 @@
             data: {
                 "type": epttype,
                 "rootname": uuid,
-                "ep":newDomain,
+                "ss":useStickySession,
                 "bpgtls": bypassGlobalTLS,
-                "tls" :requireTLS,
-                "tlsval": skipCertValidations,
-                "bpwsorg" : bypassWebsocketOrigin,
                 "bauth" :requireBasicAuth,
                 "rate" :requireRateLimit,
                 "ratenum" :rateLimit,
@@ -434,21 +423,6 @@
             }
         })
     }
-
-    //Clearn the proxy target value, make sure user do not enter http:// or https://
-    //and auto select TLS checkbox if https:// exists
-    function cleanProxyTargetValue(input){
-        let targetDomain = $(input).val().trim();
-        if (targetDomain.startsWith("http://")){
-            targetDomain = targetDomain.substr(7);
-            $(input).val(targetDomain);
-            $("#httpProxyList input.RequireTLS").parent().checkbox("set unchecked");
-        }else if (targetDomain.startsWith("https://")){
-            targetDomain = targetDomain.substr(8);
-            $(input).val(targetDomain);
-            $("#httpProxyList input.RequireTLS").parent().checkbox("set checked");
-        }
-    }
     
     /* button events */
     function editBasicAuthCredentials(uuid){
@@ -490,12 +464,12 @@
     }
 
     //Open the load balance option
-    function editLoadBalanceOptions(uuid){
+    function editUpstreams(uuid){
         let payload = encodeURIComponent(JSON.stringify({
             ept: "host",
             ep: uuid
         }));
-        showSideWrapper("snippet/loadBalancer.html?t=" + Date.now() + "#" + payload);
+        showSideWrapper("snippet/upstreams.html?t=" + Date.now() + "#" + payload);
     }
 
     function handleProxyRuleToggle(object){

src/web/components/rproot.html

@@ -122,7 +122,7 @@
     function initRootInfo(callback=undefined){
         $.get("/api/proxy/list?type=root", function(data){
             if (data == null){
-
+                msgbox("Default site load failed", false);
             }else{
                 var $radios = $('input:radio[name=defaultsiteOption]');
                 let proxyType = data.DefaultSiteOption;
@@ -140,8 +140,8 @@
                 }
                 updateAvaibleDefaultSiteOptions();
                 
-                $("#proxyRoot").val(data.Domain);
-                checkRootRequireTLS(data.Domain);
+                $("#proxyRoot").val(data.ActiveOrigins[0].OriginIpOrDomain);
+                checkRootRequireTLS(data.ActiveOrigins[0].OriginIpOrDomain);
             }
 
             if (callback != undefined){
@@ -247,7 +247,9 @@
                     msgbox(data.error, false, 5000);
                 }else{
                     //OK
+                    
                     initRootInfo(function(){
+                        
                         //Check if WebServ is enabled
                         isUsingStaticWebServerAsRoot(function(isUsingWebServ){
                             if (isUsingWebServ){
@@ -256,11 +258,7 @@
                                 setWebServerRunningState(true);
                             }
                             
-                            setTimeout(function(){
-                                 //Update the checkbox
-                                msgbox("Default Site Updated");
-                            }, 100);
-                            
+                            msgbox("Default Site Updated");
                         })
                     });
                     
@@ -269,6 +267,9 @@
                 if (btn != undefined){
                     $(btn).removeClass("disabled");
                 }
+            },
+            error: function(){
+                msgbox("Unknown error occured", false);
             }
         });
 

src/web/components/rules.html

@@ -26,8 +26,8 @@
                     </div>
                     <div class="field">
                         <label>Target IP Address or Domain Name with port</label>
-                            <input type="text" id="proxyDomain" onchange="autoCheckTls(this.value);">
-                        <small>E.g. 192.168.0.101:8000 or example.com</small>
+                            <input type="text" id="proxyDomain" onchange="autoFillTargetTLS(this);">
+                        <small>e.g. 192.168.0.101:8000 or example.com</small>
                     </div>
                     <div class="field dockerOptimizations" style="display:none;">
                         <button style="margin-top: -2em;" class="ui basic small button" onclick="openDockerContainersList();"><i class="blue docker icon"></i> Pick from Docker Containers</button>
@@ -76,6 +76,12 @@
                                         <label>Allow plain HTTP access<br><small>Allow this subdomain to be connected without TLS (Require HTTP server enabled on port 80)</small></label>
                                     </div>
                                 </div>
+                                <div class="field">
+                                    <div class="ui checkbox">
+                                        <input type="checkbox" id="useStickySessionLB">
+                                        <label>Sticky Session<br><small>Enable stick session on upstream load balancing</small></label>
+                                    </div>
+                                </div>
                                 <div class="field">
                                     <div class="ui checkbox">
                                         <input type="checkbox" id="requireRateLimit">
@@ -259,7 +265,26 @@
         }
     }
 
+    //Clearn the proxy target value, make sure user do not enter http:// or https://
+    //and auto select TLS checkbox if https:// exists
+    function autoFillTargetTLS(input){
+        let targetDomain = $(input).val().trim();
+        if (targetDomain.startsWith("http://")){
+            targetDomain = targetDomain.substr(7);
+            $(input).val(targetDomain);
+            $("#reqTls").parent().checkbox("set unchecked");
+        }else if (targetDomain.startsWith("https://")){
+            targetDomain = targetDomain.substr(8);
+            $(input).val(targetDomain);
+            $("#reqTls").parent().checkbox("set checked");
+        }else{
+            //No http or https was given. Sniff it
+            autoCheckTls(targetDomain);
+        }
+    }
+    
 
+    //Automatic check if the site require TLS and check the checkbox if needed
     function autoCheckTls(targetDomain){
        $.ajax({
             url: "/api/proxy/tlscheck",
@@ -453,7 +478,25 @@
     }
     
     /* UI Element Initialization */
-    $("#advanceProxyRules").accordion();
-    $("#newProxyRuleAccessFilter").parent().dropdown();
+    function initAdvanceSettingsAccordion(){
+        function hasClickEvent(element) {
+            var events = $._data(element, "events");
+            return events && events.click && events.click.length > 0;
+        }
+
+        if (!hasClickEvent($("#advanceProxyRules"))){
+            // Not sure why sometime the accordion events are not binding
+            // to the DOM element. This makes sure the element is binded
+            // correctly by checking it again after 300ms
+            $("#advanceProxyRules").accordion();
+            $("#newProxyRuleAccessFilter").parent().dropdown();
+            setTimeout(function(){
+                initAdvanceSettingsAccordion();
+            }, 300);
+        }
+    }
+    initAdvanceSettingsAccordion();
+   
+ 
    
 </script>

src/web/index.html

@@ -9,7 +9,6 @@
         <title>Control Panel | Zoraxy</title>
         <link rel="stylesheet" href="script/semantic/semantic.min.css">
         <script src="script/jquery-3.6.0.min.js"></script>
-        <script src="../script/ao_module.js"></script>
         <script src="script/semantic/semantic.min.js"></script>
         <script src="script/tablesort.js"></script>
         <script src="script/countryCode.js"></script>

src/web/snippet/accessRuleEditor.html

@@ -2,6 +2,7 @@
 <html>
   <head>
       <!-- Notes: This should be open in its original path-->
+      <meta charset="utf-8">
       <link rel="stylesheet" href="../script/semantic/semantic.min.css">
       <script src="../script/jquery-3.6.0.min.js"></script>
       <script src="../script/semantic/semantic.min.js"></script>

src/web/snippet/acme.html

@@ -2,6 +2,7 @@
 <html>
   <head>
       <!-- Notes: This should be open in its original path-->
+      <meta charset="utf-8">
       <link rel="stylesheet" href="../script/semantic/semantic.min.css">
       <script src="../script/jquery-3.6.0.min.js"></script>
       <script src="../script/semantic/semantic.min.js"></script>
@@ -133,11 +134,17 @@
     </div>
     <div class="field dnsChallengeOnly" style="display:none;">
       <div class="ui divider"></div>
-      <p>DNS Credentials (Leave all fields empty to use previous settings)<br>
-      <small><i class="yellow exclamation triangle icon"></i> Note that domain DNS credentials are stored separately. For each new subdomain, you will need to enter a new DNS credentials.</small></p>
+      <p>DNS Credentials</p>
       <div id="dnsProviderAPIFields">
-
+        <p><i class="ui loading circle notch icon"></i> Generating WebForm</p>
       </div>
+      <h4><i class="yellow exclamation triangle icon"></i> Notes & FAQ</h4>
+      <div class="ui bulleted list">
+        <div class="item">Domain DNS credentials are stored separately. For each new subdomain, you will need to enter a new DNS credentials.</div>
+        <div class="item">For some DNS providers like CloudFlare, you do not need to fill in all fields.</div>
+        <div class="item">If you are not sure what to fill in, check out the documentation from <a href="https://go-acme.github.io/lego/dns/" target="_blank">lego (DNS challenge library)</a></div>
+      </div>
+      
       <!-- 
         <label>Credentials File Content</label>
         <textarea id="dnsCredentials" placeholder=""></textarea>
@@ -740,6 +747,9 @@
     function toggleDnsChallenge(){
       if ( $("#useDnsChallenge")[0].checked){
         $(".dnsChallengeOnly").show();
+        setTimeout(function(){
+          $("#dnsProvider").dropdown("set text", "Cloudflare");
+        }, 500);
       }else{
         $(".dnsChallengeOnly").hide();
       }

src/web/snippet/advanceStatsOprs.html

@@ -2,6 +2,7 @@
 <html>
     <head>
         <!-- Notes: This should be open in its original path-->
+        <meta charset="utf-8">
         <link rel="stylesheet" href="../script/semantic/semantic.min.css">
         <script src="../script/jquery-3.6.0.min.js"></script>
         <script src="../script/semantic/semantic.min.js"></script>

src/web/snippet/aliasEditor.html

@@ -2,6 +2,7 @@
 <html>
     <head>
         <!-- Notes: This should be open in its original path-->
+        <meta charset="utf-8">
         <link rel="stylesheet" href="../script/semantic/semantic.min.css">
         <script src="../script/jquery-3.6.0.min.js"></script>
         <script src="../script/semantic/semantic.min.js"></script>

src/web/snippet/basicAuthEditor.html

@@ -2,6 +2,7 @@
 <html>
     <head>
         <!-- Notes: This should be open in its original path-->
+        <meta charset="utf-8">
         <link rel="stylesheet" href="../script/semantic/semantic.min.css">
         <script src="../script/jquery-3.6.0.min.js"></script>
         <script src="../script/semantic/semantic.min.js"></script>

src/web/snippet/configTools.html

@@ -2,6 +2,7 @@
 <html>
     <head>
         <!-- Notes: This should be open in its original path-->
+        <meta charset="utf-8">
         <link rel="stylesheet" href="../script/semantic/semantic.min.css">
         <script src="../script/jquery-3.6.0.min.js"></script>
         <script src="../script/semantic/semantic.min.js"></script>

src/web/snippet/customHeaders.html

@@ -2,6 +2,7 @@
 <html>
     <head>
         <!-- Notes: This should be open in its original path-->
+        <meta charset="utf-8">
         <link rel="stylesheet" href="../script/semantic/semantic.min.css">
         <script src="../script/jquery-3.6.0.min.js"></script>
         <script src="../script/semantic/semantic.min.js"></script>

src/web/snippet/dockerContainersList.html

@@ -2,6 +2,7 @@
 <html>
   <head>
     <!-- Notes: This should be open in its original path-->
+    <meta charset="utf-8">
     <link rel="stylesheet" href="../script/semantic/semantic.min.css" />
     <script src="../script/jquery-3.6.0.min.js"></script>
     <script src="../script/semantic/semantic.min.js"></script>

src/web/snippet/hostAccessEditor.html

@@ -2,6 +2,7 @@
 <html>
     <head>
         <!-- Notes: This should be open in its original path-->
+        <meta charset="utf-8">
         <link rel="stylesheet" href="../script/semantic/semantic.min.css">
         <script src="../script/jquery-3.6.0.min.js"></script>
         <script src="../script/semantic/semantic.min.js"></script>

src/web/snippet/intermediateCertConv.html

@@ -2,6 +2,7 @@
 <html>
     <head>
         <!-- Notes: This should be open in its original path-->
+        <meta charset="utf-8">
         <link rel="stylesheet" href="../script/semantic/semantic.min.css">
         <script src="../script/jquery-3.6.0.min.js"></script>
         <script src="../script/semantic/semantic.min.js"></script>

src/web/snippet/loadBalancer.html

@@ -1,49 +0,0 @@
-<!DOCTYPE html>
-<html>
-    <head>
-        <!-- Notes: This should be open in its original path-->
-        <link rel="stylesheet" href="../script/semantic/semantic.min.css">
-        <script src="../script/jquery-3.6.0.min.js"></script>
-        <script src="../script/semantic/semantic.min.js"></script>
-    </head>
-    <body>
-        <br>
-        <div class="ui container">
-            <div class="ui header">
-                <div class="content">
-                    Load Balance
-                    <div class="sub header epname"></div>
-                </div>
-            </div>
-            <div class="ui divider"></div>
-            
-            <div class="ui divider"></div>
-            <div class="field" >
-                <button class="ui basic button"  style="float: right;" onclick="closeThisWrapper();">Close</button>
-            </div>
-        </div>
-            
-        <br><br><br><br>
-
-        </div>
-        <script>
-            let aliasList = [];
-            let editingEndpoint = {};
-
-            if (window.location.hash.length > 1){
-                let payloadHash = window.location.hash.substr(1);
-                try{
-                    payloadHash = JSON.parse(decodeURIComponent(payloadHash));
-                    $(".epname").text(payloadHash.ep);
-                    editingEndpoint = payloadHash;
-                }catch(ex){
-                    console.log("Unable to load endpoint data from hash")
-                }
-            }
-
-            function closeThisWrapper(){
-                parent.hideSideWrapper(true);
-            }
-        </script>
-    </body>
-</html>

src/web/snippet/placeholder.html

@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <html>
     <head>
+        <meta charset="utf-8">
         <link rel="stylesheet" href="../script/semantic/semantic.min.css">
         <script src="../script/jquery-3.6.0.min.js"></script>
         <script src="../script/semantic/semantic.min.js"></script>

src/web/snippet/upstreams.html

@@ -0,0 +1,528 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <!-- Notes: This should be open in its original path-->
+        <meta charset="utf-8">
+        <link rel="stylesheet" href="../script/semantic/semantic.min.css">
+        <script src="../script/jquery-3.6.0.min.js"></script>
+        <script src="../script/semantic/semantic.min.js"></script>
+        <style>
+            .upstreamActions{
+                position: absolute;
+                top: 0.6em;
+                right: 0.6em;
+            }
+
+            .upstreamLink{
+                max-width: 220px;
+                display: inline-block;
+                word-break: break-all;
+            }
+
+            .upstreamEntry .ui.toggle.checkbox input:checked ~ label::before{
+                background-color: #00ca52 !important;
+            }
+
+            #activateNewUpstream.ui.toggle.checkbox input:checked ~ label::before{
+                background-color: #00ca52 !important;
+            }
+
+            #upstreamTable{
+                max-height: 480px;
+                border-radius: 0.3em;
+                padding: 0.3em;
+                overflow-y: auto;
+            }
+
+            .upstreamEntry.inactive{
+                background-color: #f3f3f3 !important;
+            }
+
+            .upstreamEntry{
+                border-radius: 0.4em !important;
+                border: 1px solid rgb(233, 233, 233) !important;
+            }
+
+            @media (max-width: 499px) {
+                .upstreamActions{
+                    position: relative;
+                    margin-top: 1em;
+                    margin-left: 0.4em;
+                    margin-bottom: 0.4em;
+                }
+            }
+        </style>
+    </head>
+    <body>
+        <br>
+        <div class="ui container">
+            <div class="ui header">
+                <div class="content">
+                    Upstreams / Load Balance
+                    <div class="sub header epname"></div>
+                </div>
+            </div>
+            <div class="ui divider"></div>
+            <div class="ui small pointing secondary menu">
+                <a class="item active narrowpadding" data-tab="upstreamlist">Upstreams</a>
+                <a class="item narrowpadding" data-tab="newupstream">Add Upstream</a>
+            </div>
+            <div class="ui tab basic segment active" data-tab="upstreamlist">
+                <!-- A list of current existing upstream on this reverse proxy-->
+                <div id="upstreamTable">
+                    <div class="ui segment">
+                        <a><i class="ui loading spinner icon"></i> Loading</a>
+                    </div>
+                </div>
+                <div class="ui message">
+                    <i class="ui blue info circle icon"></i> Round-robin load balancing algorithm will be used for upstreams with same weight. Set weight to 0 for fallback only.
+                 </div>
+            </div>
+            <div class="ui tab basic segment" data-tab="newupstream">
+                <!-- Web Form to create a new upstream -->
+                <h4 class="ui header">
+                    <i class="green add icon"></i>
+                    <div class="content">
+                        Add Upstream Server
+                        <div class="sub header">Create new load balance or fallback upstream origin</div>
+                    </div>
+                </h4>
+                <p style="margin-bottom: 0.4em;">Target IP address with port</p>
+                <div class="ui fluid small input">
+                    <input type="text" id="originURL" onchange="cleanProxyTargetValue(this);"><br>
+                </div>
+                <small>E.g. 192.168.0.101:8000 or example.com</small>
+                <br><br>
+                <div id="activateNewUpstream" class="ui toggle checkbox" style="display:inline-block;">
+                    <input type="checkbox" id="activateNewUpstreamCheckbox" style="margin-top: 0.4em;" checked>
+                    <label>Activate<br>
+                    <small>Enable this upstream for load balancing</small></label>
+                </div><br>
+                <div class="ui checkbox" style="margin-top: 1.2em;">
+                    <input type="checkbox" id="requireTLS">
+                    <label>Require TLS<br>
+                        <small>Proxy target require HTTPS connection</small></label>
+                </div><br>
+                <div class="ui checkbox" style="margin-top: 0.6em;">
+                    <input type="checkbox" id="skipTlsVerification">
+                     <label>Skip Verification<br>
+                        <small>Check this if proxy target is using self signed certificates</small></label>
+                </div><br>
+                 <div class="ui checkbox" style="margin-top: 0.4em;">
+                    <input type="checkbox" id="SkipWebSocketOriginCheck" checked>
+                    <label>Skip WebSocket Origin Check<br>
+                    <small>Check this to allow cross-origin websocket requests</small></label>
+                </div>
+                <br><br>
+                <button class="ui basic button" onclick="addNewUpstream();"><i class="ui green circle add icon"></i> Create</button>
+            </div>
+            <div class="ui divider"></div>
+            <div class="field" >
+                <button class="ui basic button"  style="float: right;" onclick="closeThisWrapper();">Close</button>
+            </div>
+        </div>
+        <br><br><br><br>
+
+        </div>
+        <script>
+            let origins = [];
+            let editingEndpoint = {};
+            $('.menu .item').tab();
+           
+
+            function initOriginList(){
+                $.ajax({
+                    url: "/api/proxy/upstream/list",
+                    method: "POST",
+                    data: {
+                        "type":"host",
+                        "ep": editingEndpoint.ep
+                    },
+                    success: function(data){
+                        if (data.error != undefined){
+                            //This endpoint not exists?
+                            alert(data.error);
+                            return;
+                        }else{
+                            $("#upstreamTable").html("");
+
+                            if (data.ActiveOrigins.length == 0){
+                                //There is no upstream for this proxy rule
+                                $("#upstreamTable").append(`<tr>
+                                    <td colspan="2"><b><i class="ui yellow exclamation triangle icon"></i> No Active Upstream Origin</b><br>
+                                        This HTTP proxy rule will always return Error 521 when requested. To fix this, add or enable a upstream origin to this proxy endpoint.
+                                        <div class="ui divider"></div>
+                                    </td>
+                                </tr>`);
+                            }
+
+                            data.ActiveOrigins.forEach(upstream => {
+                                renderUpstreamEntryToTable(upstream, true);
+                            });
+
+                            data.InactiveOrigins.forEach(upstream => {
+                                renderUpstreamEntryToTable(upstream, false);
+                            });
+
+                            let totalUpstreams = data.ActiveOrigins.length + data.InactiveOrigins.length;
+                            if (totalUpstreams == 1){
+                                $(".lowPriorityButton").addClass('disabled');
+                            }
+
+                            if (parent && parent.document.getElementById("httpProxyList") != null){
+                                //Also update the parent display
+                                let element = $(parent.document.getElementById("httpProxyList")).find(".upstreamList.editing");
+                                let upstreams = "";
+                                data.ActiveOrigins.forEach(upstream => {
+                                    //Check if the upstreams require TLS connections
+                                    let tlsIcon = "";
+                                    if (upstream.RequireTLS){
+                                        tlsIcon = `<i class="green lock icon" title="TLS Mode"></i>`;
+                                        if (upstream.SkipCertValidations){
+                                            tlsIcon = `<i class="yellow lock icon" title="TLS/SSL mode without verification"></i>`
+                                        }
+                                    }
+
+                                    let upstreamLink = `${upstream.RequireTLS?"https://":"http://"}${upstream.OriginIpOrDomain}`;
+
+                                    upstreams += `<a href="${upstreamLink}" target="_blank">${upstream.OriginIpOrDomain} ${tlsIcon}</a><br>`;
+                                });
+
+                                if (data.ActiveOrigins.length == 0){
+                                    upstreams = `<i class="ui yellow exclamation triangle icon"></i> No Active Upstream Origin<br>`
+                                }
+                                $(element).html(upstreams);
+                            }
+
+                            $(".ui.checkbox").checkbox();
+                        }
+                    }
+                })
+            }
+            
+            function renderUpstreamEntryToTable(upstream, isActive){
+                function newUID(){return"00000000-0000-4000-8000-000000000000".replace(/0/g,function(){return(0|Math.random()*16).toString(16)})};
+                let tlsIcon = "";
+                if (upstream.RequireTLS){
+                    tlsIcon = `<i class="green lock icon" title="TLS Mode"></i>`;
+                    if (upstream.SkipCertValidations){
+                        tlsIcon = `<i class="yellow lock icon" title="TLS/SSL mode without verification"></i>`
+                    }
+                }
+
+                //Priority Arrows 
+                let downArrowClass = "";
+                if (upstream.Weight == 0 ){
+                    //Cannot go any lower
+                    downArrowClass = "disabled";
+                }
+                let url = `${upstream.RequireTLS?"https://":"http://"}${upstream.OriginIpOrDomain}`
+                let payload = encodeURIComponent(JSON.stringify(upstream));
+                let domUID = newUID();
+                $("#upstreamTable").append(`<div class="ui upstreamEntry ${isActive?"":"inactive"} basic segment" data-domid="${domUID}" data-payload="${payload}" data-priority="${upstream.Priority}">
+                    <h4 class="ui header">
+                        <div class="ui toggle checkbox" style="display:inline-block;">
+                            <input type="checkbox" class="enableState" name="enabled" style="margin-top: 0.4em;" onchange="saveUpstreamUpdate('${domUID}');" ${isActive?"checked":""}>
+                            <label></label>
+                        </div>
+                        <div class="content">
+                        <a href="${url}" target="_blank" class="upstreamLink">${upstream.OriginIpOrDomain} ${tlsIcon}</a>
+                            <div class="sub header">${isActive?(upstream.Weight==0?"Fallback Only":"Active"):"Inactive"} | Weight: ${upstream.Weight}x </div>
+                        </div>
+                    </h4>
+                    <div class="advanceOptions" style="display:none;">
+                        <div class="upstreamOriginField">
+                            <p>New upstream origin IP address or domain</p>
+                            <div class="ui small fluid input" style="margin-top: -0.6em;">
+                                <input type="text" class="newOrigin" value="${upstream.OriginIpOrDomain}" onchange="handleAutoOriginClean('${domUID}');">
+                            </div>
+                            <small>e.g. 192.168.0.101:8000 or example.com</small>
+                        </div>
+                        <div class="ui divider"></div>
+                        <div class="ui checkbox">
+                            <input type="checkbox" class="reqTLSCheckbox" ${upstream.RequireTLS?"checked":""}>
+                            <label>Require TLS<br>
+                                <small>Proxy target require HTTPS connection</small></label>
+                        </div><br>
+                        <div class="ui checkbox" style="margin-top: 0.6em;">
+                            <input type="checkbox" class="skipVerificationCheckbox" ${upstream.SkipCertValidations?"checked":""}>
+                                <label>Skip Verification<br>
+                                <small>Check this if proxy target is using self signed certificates</small></label>
+                        </div><br>
+                            <div class="ui checkbox" style="margin-top: 0.4em;">
+                            <input type="checkbox" class="SkipWebSocketOriginCheck" ${upstream.SkipWebSocketOriginCheck?"checked":""}>
+                            <label>Skip WebSocket Origin Check<br>
+                            <small>Check this to allow cross-origin websocket requests</small></label>
+                        </div><br>
+                    </div>
+                    <div class="upstreamActions">
+                        <!-- Change Priority -->
+                        <button class="ui basic circular icon button highPriorityButton" title="Increase Weight" onclick="increaseUpstreamWeight('${domUID}');"><i class="ui arrow up icon"></i></button>
+                        <button class="ui basic circular icon button lowPriorityButton ${downArrowClass}" title="Reduce Weight"  onclick="decreaseUpstreamWeight('${domUID}');"><i class="ui arrow down icon"></i></button>
+                        <button class="ui basic circular icon editbtn button" onclick="handleUpstreamOriginEdit('${domUID}');" title="Edit Upstream Destination"><i class="ui grey edit icon"></i></button>
+                        <button style="display:none;" class="ui basic circular icon trashbtn button" onclick="removeUpstream('${domUID}');" title="Remove Upstream"><i class="ui red trash icon"></i></button>
+                        <button style="display:none;" class="ui basic circular icon savebtn button" onclick="saveUpstreamUpdate('${domUID}');" title="Save Changes"><i class="ui green save icon"></i></button>
+                        <button style="display:none;" class="ui basic circular icon cancelbtn button" onclick="initOriginList();" title="Cancel"><i class="ui grey times icon"></i></button>
+                    </div>
+                </div>`);
+            }
+
+            /* New Upstream Origin Functions */
+
+            //Clearn the proxy target value, make sure user do not enter http:// or https://
+            //and auto select TLS checkbox if https:// exists
+            function cleanProxyTargetValue(input){
+                let targetDomain = $(input).val().trim();
+                if (targetDomain.startsWith("http://")){
+                    targetDomain = targetDomain.substr(7);
+                    $(input).val(targetDomain);
+                    $("#requireTLS").parent().checkbox("set unchecked");
+                }else if (targetDomain.startsWith("https://")){
+                    targetDomain = targetDomain.substr(8);
+                    $(input).val(targetDomain);
+                    $("#requireTLS").parent().checkbox("set checked");
+                }else{
+                    //URL does not contains https or http protocol tag
+                    //sniff header
+                    $.ajax({
+                            url: "/api/proxy/tlscheck",
+                            data: {url: targetDomain},
+                            success: function(data){
+                                if (data.error != undefined){
+
+                                }else if (data == "https"){
+                                    $("#requireTLS").parent().checkbox("set checked");
+                                }else if (data == "http"){
+                                    $("#requireTLS").parent().checkbox("set unchecked");
+                                }
+                            }
+                    })
+                }
+            }
+
+            //Add a new upstream to this http proxy rule
+            function addNewUpstream(){
+                let origin = $("#originURL").val().trim();
+                let requireTLS = $("#requireTLS")[0].checked;
+                let skipVerification = $("#skipTlsVerification")[0].checked;
+                let skipWebSocketOriginCheck = $("#SkipWebSocketOriginCheck")[0].checked;
+                let activateLoadbalancer = $("#activateNewUpstreamCheckbox")[0].checked;
+
+                if (origin == ""){
+                    parent.msgbox("Upstream origin cannot be empty", false);
+                    return;
+                }
+
+                $.ajax({
+                    url: "/api/proxy/upstream/add",
+                    method: "POST",
+                    data:{
+                        "ep": editingEndpoint.ep,
+                        "origin": origin,
+                        "tls": requireTLS,
+                        "tlsval": skipVerification,
+                        "bpwsorg":skipWebSocketOriginCheck,
+                        "active": activateLoadbalancer,
+                    },
+                    success: function(data){
+                        if (data.error != undefined){
+                            parent.msgbox(data.error, false);
+                        }else{
+                            parent.msgbox("New upstream origin added");
+                            initOriginList();
+                            $("#originURL").val("");
+                        }
+                    }
+                })
+            }
+
+            //Get a upstream setting data from DOM element
+            function getUpstreamSettingFromDOM(upstream){
+                //Get the original setting from DOM payload
+                let originalSettings = $(upstream).attr("data-payload");
+                originalSettings = JSON.parse(decodeURIComponent(originalSettings));
+                
+                //Get the updated settings if any
+                let requireTLS = $(upstream).find(".reqTLSCheckbox")[0].checked;
+                let skipTLSVerification = $(upstream).find(".skipVerificationCheckbox")[0].checked;
+                let skipWebSocketOriginCheck = $(upstream).find(".SkipWebSocketOriginCheck")[0].checked;
+
+                //Update the original setting with new one just applied
+                originalSettings.OriginIpOrDomain = $(upstream).find(".newOrigin").val();
+                originalSettings.RequireTLS = requireTLS;
+                originalSettings.SkipCertValidations = skipTLSVerification;
+                originalSettings.SkipWebSocketOriginCheck = skipWebSocketOriginCheck;
+
+                //console.log(originalSettings);
+                return originalSettings;
+            }
+
+            //Handle setting change on upstream config
+            function saveUpstreamUpdate(upstreamDomID){
+                let targetDOM = $(`.upstreamEntry[data-domid=${upstreamDomID}]`);
+                let originalSettings = $(targetDOM).attr("data-payload");
+                originalSettings = JSON.parse(decodeURIComponent(originalSettings));
+                let newConfig = getUpstreamSettingFromDOM(targetDOM);
+                let isActive = $(targetDOM).find(".enableState")[0].checked;
+                console.log(newConfig);
+                $.ajax({
+                    url: "/api/proxy/upstream/update",
+                    method: "POST",
+                    data: {
+                        ep: editingEndpoint.ep,
+                        origin: originalSettings.OriginIpOrDomain, //Original ip or domain as key
+                        payload: JSON.stringify(newConfig),
+                        active: isActive,
+                    },
+                    success: function(data){
+                        if (data.error != undefined){
+                            parent.msgbox(data.error, false);
+
+                        }else{
+                            parent.msgbox("Upstream setting updated");
+                            initOriginList();
+                        }
+                    }
+                })
+            }
+
+            //Edit the upstream origin of this upstream entry
+            function handleUpstreamOriginEdit(upstreamDomID){
+                let targetDOM = $(`.upstreamEntry[data-domid=${upstreamDomID}]`);
+                let originalSettings = getUpstreamSettingsFromDomID(upstreamDomID);
+                let originIP = originalSettings.OriginIpOrDomain;
+
+                //Change the UI to edit mode
+                $(".editbtn").hide();
+                $(".lowPriorityButton").hide();
+                $(".highPriorityButton").hide();
+                $(targetDOM).find(".trashbtn").show();
+                $(targetDOM).find(".savebtn").show();
+                $(targetDOM).find(".cancelbtn").show();
+                $(targetDOM).find(".advanceOptions").show();
+            }
+
+            //Check if the entered URL contains http or https
+            function handleAutoOriginClean(domid){
+                let targetDOM = $(`.upstreamEntry[data-domid=${domid}]`);
+                let targetTLSCheckbox = $(targetDOM).find(".reqTLSCheckbox");
+                let targetDomain = $(targetDOM).find(".newOrigin").val().trim();
+                if (targetDomain.startsWith("http://")){
+                    targetDomain = targetDomain.substr(7);
+                    $(input).val(targetDomain);
+                    $(targetTLSCheckbox).parent().checkbox("set unchecked");
+                }else if (targetDomain.startsWith("https://")){
+                    targetDomain = targetDomain.substr(8);
+                    $(input).val(targetDomain);
+                    $(targetTLSCheckbox).parent().checkbox("set checked");
+                }else{
+                    //URL does not contains https or http protocol tag
+                    //sniff header
+                    $.ajax({
+                            url: "/api/proxy/tlscheck",
+                            data: {url: targetDomain},
+                            success: function(data){
+                                if (data.error != undefined){
+
+                                }else if (data == "https"){
+                                    $(targetTLSCheckbox).parent().checkbox("set checked");
+                                }else if (data == "http"){
+                                    $(targetTLSCheckbox).parent().checkbox("set unchecked");
+                                }
+                            }
+                    })
+                }
+            }
+
+            function getUpstreamSettingsFromDomID(domid){
+                let targetDOM = $(`.upstreamEntry[data-domid=${domid}]`);
+                if (targetDOM.length == 0){
+                    return undefined;
+                }
+                let upstreamSettings = $(targetDOM).attr("data-payload");
+                upstreamSettings = JSON.parse(decodeURIComponent(upstreamSettings));
+                return upstreamSettings;
+            }
+
+            function increaseUpstreamWeight(domid){
+                let upstreamSetting = getUpstreamSettingsFromDomID(domid);
+                let originIP = upstreamSetting.OriginIpOrDomain;
+                let currentWeight = upstreamSetting.Weight;
+                setUpstreamWeight(originIP, currentWeight+1);
+            }
+
+            function decreaseUpstreamWeight(domid){
+                let upstreamSetting = getUpstreamSettingsFromDomID(domid);
+                let originIP = upstreamSetting.OriginIpOrDomain;
+                let currentWeight = upstreamSetting.Weight;
+                setUpstreamWeight(originIP, currentWeight-1);
+            }
+
+            //Set a weight of a upstream
+            function setUpstreamWeight(originIP, newWeight){
+                $.ajax({
+                    url: "/api/proxy/upstream/setPriority",
+                    method: "POST",
+                    data: {
+                        ep: editingEndpoint.ep,
+                        origin: originIP,
+                        weight: newWeight,
+                    },
+                    success: function(data){
+                        if (data.error != undefined){
+                            parent.msgbox(data.error, false);
+                        }else{
+                            parent.msgbox("Upstream Weight Updated");
+                            initOriginList();
+                        }
+                    }
+                })
+            }
+
+            //Handle removal of an upstream
+            function removeUpstream(domid){
+                let targetDOM = $(`.upstreamEntry[data-domid=${domid}]`);
+                let originalSettings = $(targetDOM).attr("data-payload");
+                originalSettings = JSON.parse(decodeURIComponent(originalSettings));
+                let UpstreamKey = originalSettings.OriginIpOrDomain;
+                if (!confirm("Confirm removing " + UpstreamKey + " from upstream?")){
+                    return;
+                }
+                //Remove the upstream
+                $.ajax({
+                    url: "/api/proxy/upstream/remove",
+                    method: "POST",
+                    data: {
+                        ep: editingEndpoint.ep,
+                        origin: originalSettings.OriginIpOrDomain, //Original ip or domain as key
+                    },
+                    success: function(data){
+                        if (data.error != undefined){
+                            parent.msgbox(data.error, false);
+
+                        }else{
+                            parent.msgbox("Upstream deleted");
+                            initOriginList();
+                        }
+                    }
+                })
+            }
+
+            if (window.location.hash.length > 1){
+                let payloadHash = window.location.hash.substr(1);
+                try{
+                    payloadHash = JSON.parse(decodeURIComponent(payloadHash));
+                    $(".epname").text(payloadHash.ep);
+                    editingEndpoint = payloadHash;
+                    initOriginList();
+                }catch(ex){
+                    console.log("Unable to load endpoint data from hash")
+                }
+            }
+
+            function closeThisWrapper(){
+                parent.hideSideWrapper(true);
+            }
+        </script>
+    </body>
+</html>

src/wrappers.go

@@ -25,6 +25,7 @@ import (
 	"time"
 
 	"imuslab.com/zoraxy/mod/dynamicproxy"
+	"imuslab.com/zoraxy/mod/dynamicproxy/loadbalance"
 	"imuslab.com/zoraxy/mod/ipscan"
 	"imuslab.com/zoraxy/mod/mdns"
 	"imuslab.com/zoraxy/mod/uptime"
@@ -124,37 +125,42 @@ func GetUptimeTargetsFromReverseProxyRules(dp *dynamicproxy.Router) []*uptime.Ta
 
 	UptimeTargets := []*uptime.Target{}
 	for hostid, target := range hosts {
-		url := "http://" + target.Domain
-		protocol := "http"
-		if target.RequireTLS {
-			url = "https://" + target.Domain
-			protocol = "https"
-		}
+		for _, origin := range target.ActiveOrigins {
 
-		//Add the root url
-		UptimeTargets = append(UptimeTargets, &uptime.Target{
-			ID:       hostid,
-			Name:     hostid,
-			URL:      url,
-			Protocol: protocol,
-		})
-
-		//Add each virtual directory into the list
-		for _, vdir := range target.VirtualDirectories {
-			url := "http://" + vdir.Domain
+			url := "http://" + origin.OriginIpOrDomain
 			protocol := "http"
-			if target.RequireTLS {
-				url = "https://" + vdir.Domain
+			if origin.RequireTLS {
+				url = "https://" + origin.OriginIpOrDomain
 				protocol = "https"
 			}
+
 			//Add the root url
 			UptimeTargets = append(UptimeTargets, &uptime.Target{
-				ID:       hostid + vdir.MatchingPath,
-				Name:     hostid + vdir.MatchingPath,
-				URL:      url,
-				Protocol: protocol,
+				ID:        hostid,
+				Name:      hostid,
+				URL:       url,
+				Protocol:  protocol,
+				ProxyType: uptime.ProxyType_Host,
 			})
 
+			//Add each virtual directory into the list
+			for _, vdir := range target.VirtualDirectories {
+				url := "http://" + vdir.Domain
+				protocol := "http"
+				if origin.RequireTLS {
+					url = "https://" + vdir.Domain
+					protocol = "https"
+				}
+				//Add the root url
+				UptimeTargets = append(UptimeTargets, &uptime.Target{
+					ID:        hostid + vdir.MatchingPath,
+					Name:      hostid + vdir.MatchingPath,
+					URL:       url,
+					Protocol:  protocol,
+					ProxyType: uptime.ProxyType_Vdir,
+				})
+
+			}
 		}
 	}
 
@@ -187,7 +193,16 @@ func HandleStaticWebServerPortChange(w http.ResponseWriter, r *http.Request) {
 	if dynamicProxyRouter.Root.DefaultSiteOption == dynamicproxy.DefaultSite_InternalStaticWebServer {
 		//Update the root site as well
 		newDraftingRoot := dynamicProxyRouter.Root.Clone()
-		newDraftingRoot.Domain = "127.0.0.1:" + strconv.Itoa(newPort)
+
+		newDraftingRoot.ActiveOrigins = []*loadbalance.Upstream{
+			{
+				OriginIpOrDomain:         "127.0.0.1:" + strconv.Itoa(newPort),
+				RequireTLS:               false,
+				SkipCertValidations:      false,
+				SkipWebSocketOriginCheck: true,
+				Weight:                   0,
+			},
+		}
 		activatedNewRoot, err := dynamicProxyRouter.PrepareProxyRoute(newDraftingRoot)
 		if err != nil {
 			utils.SendErrorResponse(w, "unable to update root routing rule")