Migrated to REST backend RIVM-31

contrib/deb/generate-gui.sh

@@ -57,7 +57,7 @@ cat > /tmp/$PKGNAME/usr/share/applications/riv.desktop << EOF
 Name=RiV mesh
 GenericName=Mesh network
 Comment=RiV-mesh is an early-stage implementation of a fully end-to-end encrypted IPv6 network
-Exec=sh -c "/usr/bin/mesh-ui http://localhost:19019"
+Exec=sh -c "/usr/bin/mesh-ui"
 Terminal=false
 Type=Application
 Icon=riv

contrib/macos/create-pkg-gui.sh

@@ -54,7 +54,7 @@ cp contrib/macos/mesh.plist pkgbuild/root/Library/LaunchDaemons
 cat > pkgbuild/root/Applications/RiV-mesh.app/Contents/MacOS/open-mesh-ui << EOF
 #!/usr/bin/env bash
 
-exec /Applications/RiV-mesh.app/Contents/MacOS/mesh-ui http://localhost:19019 1>/tmp/mesh-ui.stdout.log 2>/tmp/mesh-ui.stderr.log
+exec /Applications/RiV-mesh.app/Contents/MacOS/mesh-ui 1>/tmp/mesh-ui.stdout.log 2>/tmp/mesh-ui.stderr.log
 EOF
 
 # Create the postinstall script

contrib/msi/build-msi-gui.sh

@@ -272,7 +272,6 @@ cat > wix.xml << EOF
     <CustomAction Id="LaunchApplication"
       FileKey="MeshUI"
       Impersonate="yes" 
-      ExeCommand='"http://localhost:19019"'
       Return="asyncNoWait" />
 
     <!-- Step 3: Include the custom action -->
@@ -291,7 +290,6 @@ cat > wix.xml << EOF
              Description="RiV-mesh is IoT E2E encrypted network"
              Directory="DesktopFolder"
              Target="[MeshInstallFolder]mesh-ui.exe"
-             Arguments="http://localhost:19019"
              WorkingDirectory="MeshInstallFolder"/>
         <RegistryValue Root="HKCU"
             Key="Software\RiV-chain\RiV-mesh"
@@ -303,7 +301,7 @@ cat > wix.xml << EOF
             Key="Software\Microsoft\Windows\CurrentVersion\Run"
             Name="RiV-mesh client"
             Type="string"
-            Value='"[MeshInstallFolder]mesh-ui.exe" "http://localhost:19019"' />
+            Value='"[MeshInstallFolder]mesh-ui.exe"' />
         <Condition>ASSISTANCE_START_VIA_REGISTRY</Condition>
      </Component>
 

contrib/ui/mesh-ui/ui/assets/mesh-ui.js

@@ -120,13 +120,13 @@ function showWindow(text) {
   button_info_close.onclick = function () {
     message.value = "";
     info.classList.add("is-hidden");
-    //$("peer_list").remove();
+    $("peer_list").remove();
   };
   var button_window_close = $("window_close");
   button_window_close.onclick = function () {
     message.value = "";
     info.classList.add("is-hidden");
-    //$("peer_list").remove();
+    $("peer_list").remove();
   };
   var button_window_save = $("window_save");
   button_window_save.onclick = function () {
@@ -142,8 +142,18 @@ function showWindow(text) {
         peer_list.push(peerURL);
       }
     }
-    savePeers(JSON.stringify(peer_list));
-    //$("peer_list").remove();
+    fetch('api/peers', {
+        method: 'PUT',
+        headers: {
+          'Content-Type': 'application/json',
+          'Riv-Save-Config': 'true',
+        },
+        body: JSON.stringify({"peers": peer_list}),
+      })
+      .catch((error) => {
+        console.error('Error:', error);
+      });    
+    $("peer_list").remove();
   };
 }
 
@@ -249,19 +259,26 @@ ui.showAllPeers = () =>
     .then((peerList) => {
       var peers = add_table(peerList);
       //start peers test
-      ping(JSON.stringify(peers));
+      fetch('api/ping', {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify(peers)
+      })
+      .catch((error) => {
+        console.error('Error:', error);
+      });    
     }).catch((error) => {
       console.error(error);
     });
 
 
 ui.getConnectedPeers = () =>
-  fetch('api/getpeers')
+  fetch('api/peers')
     .then((response) => response.json())
 
-ui.updateConnectedPeers = () =>
-  ui.getConnectedPeers()
-    .then((cont) => {
+ui.updateConnectedPeersHandler = (cont) => {
   $("peers").innerText = "";
   const regexStrip = /%[^\]]*/gm;
   const regexMulticast  = /:\/\/\[fe80::/;
@@ -274,7 +291,12 @@ ui.updateConnectedPeers = () =>
       flag.className = "fi fi-" + ui.lookupCountryCodeByAddress(peer["remote"]) + " peer-connected-fl";
     row.append(peer["remote"].replace(regexStrip, ""));
   });
-    }).catch((error) => {
+}
+
+ui.updateConnectedPeers = () =>
+  ui.getConnectedPeers()
+    .then(ui.updateConnectedPeersHandler)
+    .catch((error) => {
       $("peers").innerText = error.message;
     });
 
@@ -286,7 +308,7 @@ ui.lookupCountryCodeByAddress = (address) => {
 }
 
 ui.getSelfInfo = () =>
-  fetch('api/getself')
+  fetch('api/self')
     .then((response) => response.json())
 
 ui.updateSelfInfo = () =>
@@ -301,6 +323,7 @@ ui.updateSelfInfo = () =>
       $("ipv6").innerText = error.message;
     });
 
+ui.sse = new EventSource('/api/sse');
 
 function main() {
 
@@ -315,7 +338,17 @@ function main() {
     setInterval(ui.updateConnectedPeers, 5000);
 
     ui.updateSelfInfo();
-    setInterval(ui.updateSelfInfo, 5000);
+    //setInterval(ui.updateSelfInfo, 5000);
+
+    ui.sse.addEventListener("ping", (e) => {
+      let data = JSON.parse(e.data);
+      setPingValue(data.peer, data.value);
+    })
+    
+    ui.sse.addEventListener("peers", (e) => {
+      ui.updateConnectedPeersHandler(JSON.parse(e.data));
+    })
+    
   });
 }
 

contrib/ui/mesh-ui/webview.go

@@ -2,25 +2,14 @@ package main
 
 import (
 	"bytes"
-	"encoding/json"
-	"errors"
-	"fmt"
-	"io/ioutil"
 	"log"
-	"net"
-	"net/url"
 	"os"
-	"path/filepath"
-	"strconv"
-	"strings"
-	"time"
 
+	"github.com/RiV-chain/RiV-mesh/src/defaults"
 	"github.com/hjson/hjson-go"
 	"github.com/webview/webview"
 	"golang.org/x/text/encoding/unicode"
 
-	"github.com/RiV-chain/RiV-mesh/src/admin"
-	"github.com/RiV-chain/RiV-mesh/src/defaults"
 	"github.com/docopt/docopt-go"
 )
 
@@ -32,7 +21,7 @@ Usage:
   mesh-ui -v | --version
 
 Options:
-  <index>       Index file name [default: index.html].
+  <index>       Index file name [default: http://localhost:19019].
   -c --console  Show debug console window.
   -h --help     Show this screen.
   -v --version  Show version.`
@@ -55,224 +44,20 @@ func main() {
 	defer w.Destroy()
 	w.SetTitle("RiV-mesh")
 	w.SetSize(690, 920, webview.HintFixed)
-	/*1. Create ~/.riv-mesh folder if not existing
-	 *2. Create ~/.riv-mesh/mesh.conf if not existing
-	 *3. If the file exists read Peers.
-	 *3.1 Invoke add peers for each record
-	 */
-	mesh_folder := ".riv-mesh"
-	mesh_conf := "mesh.conf"
-	user_home := get_user_home_path()
-	mesh_settings_folder := filepath.Join(user_home, mesh_folder)
-	err := os.MkdirAll(mesh_settings_folder, os.ModePerm)
-	if err != nil {
-		fmt.Printf("Unable to create folder: %v", err)
-	}
-	mesh_settings_path := filepath.Join(user_home, mesh_folder, mesh_conf)
-	if _, err := os.Stat(mesh_settings_path); os.IsNotExist(err) {
-		err := ioutil.WriteFile(mesh_settings_path, []byte(""), 0750)
-		if err != nil {
-			fmt.Printf("Unable to write file: %v", err)
-		}
-	} else {
-		//read peers from mesh.conf
-		conf, _ := ioutil.ReadFile(mesh_settings_path)
-		var dat map[string]interface{}
-		if err := hjson.Unmarshal(conf, &dat); err != nil {
-			fmt.Printf("Unable to parse mesh.conf file: %v", err)
-		} else {
-			if dat["Peers"] != nil {
-				peers := dat["Peers"].([]interface{})
-				remove_peers()
-				for _, u := range peers {
-					log.Printf("Unmarshaled: %v", u.(string))
-					add_peers(u.(string))
-				}
-			} else {
-				fmt.Printf("Warning: Peers array not loaded from mesh.conf file")
-			}
-		}
-	}
 
 	if confui.IndexHtml == "" {
-		confui.IndexHtml = "index.html"
-	}
-	//Check is it URL already
-	indexUrl, err := url.ParseRequestURI(confui.IndexHtml)
-	if err != nil || len(indexUrl.Scheme) < 2 { // handling no scheme at all and windows c:\ as scheme detection
-		confui.IndexHtml, err = filepath.Abs(confui.IndexHtml)
-		if err != nil {
-			panic(errors.New("Index file not found: " + err.Error()))
-		}
-		if stat, err := os.Stat(confui.IndexHtml); err != nil {
-			panic(errors.New(fmt.Sprintf("Index file %v not found or permissians denied: %v", confui.IndexHtml, err.Error())))
-		} else if stat.IsDir() {
-			panic(errors.New(fmt.Sprintf("Index file %v not found", confui.IndexHtml)))
-		}
-		path_prefix := ""
-		if indexUrl != nil && len(indexUrl.Scheme) == 1 {
-			path_prefix = "/"
-		}
-		indexUrl, err = url.ParseRequestURI("file://" + path_prefix + strings.ReplaceAll(confui.IndexHtml, "\\", "/"))
-		if err != nil {
-			panic(errors.New("Index file URL parse error: " + err.Error()))
+		confui.IndexHtml = getEndpoint()
 	}
+	if confui.IndexHtml == "" {
+		confui.IndexHtml = "http://localhost:19019"
 	}
 
-	w.Bind("savePeers", func(peer_list string) {
-		//log.Println("peers saved ", peer_list)
-		var peers []string
-		_ = json.Unmarshal([]byte(peer_list), &peers)
-		log.Printf("Unmarshaled: %v", peers)
-		remove_peers()
-		for _, u := range peers {
-			log.Printf("Unmarshaled: %v", u)
-			add_peers(u)
-		}
-		//add peers to ~/mesh.conf
-		dat := make(map[string]interface{})
-		dat["Peers"] = peers
-		bs, _ := hjson.Marshal(dat)
-		e := ioutil.WriteFile(mesh_settings_path, bs, 0750)
-		if e != nil {
-			fmt.Printf("Unable to write file: %v", e)
-		}
-	})
-	w.Bind("ping", func(peer_list string) {
-		go ping(w, peer_list)
-	})
-	log.Printf("Opening: %v", indexUrl)
-	w.Navigate(indexUrl.String())
+	log.Printf("Opening: %v", confui.IndexHtml)
+	w.Navigate(confui.IndexHtml)
 	w.Run()
 }
 
-func ping(w webview.WebView, peer_list string) {
-	var peers []string
-	_ = json.Unmarshal([]byte(peer_list), &peers)
-	log.Printf("Unmarshaled: %v", peers)
-	for _, u := range peers {
-		log.Printf("Unmarshaled: %v", u)
-		ping_time := check(u)
-		log.Printf("ping: %d", ping_time)
-		setPingValue(w, u, strconv.FormatInt(ping_time, 10))
-	}
-}
-
-func check(peer string) int64 {
-	u, e := url.Parse(peer)
-	if e != nil {
-		return -1
-	}
-	t := time.Now()
-	_, err := net.DialTimeout("tcp", u.Host, 5*time.Second)
-	if err != nil {
-		return -1
-	}
-	d := time.Since(t)
-	return d.Milliseconds()
-}
-
-func add_peers(uri string) {
-	_, err := run_command_with_arg("addpeers", "uri="+uri)
-	if err != nil {
-		log.Println("Error in the add_peers() call:", err)
-	}
-}
-
-func remove_peers() {
-	run_command("removepeers")
-}
-
-func setPingValue(p webview.WebView, peer string, value string) {
-	p.Dispatch(func() {
-		p.Eval("setPingValue('" + peer + "','" + value + "');")
-	})
-}
-
-func run_command(command string) []byte {
-	data, err := run_command_with_arg(command, "")
-	if err != nil {
-		log.Println("Error in the "+command+" call:", err)
-	}
-	return data
-}
-
-func run_command_with_arg(command string, arg string) ([]byte, error) {
-	logbuffer := &bytes.Buffer{}
-	logger := log.New(logbuffer, "", log.Flags())
-
-	wrapErr := func(err error) error {
-		logger.Println("Error:", err)
-		return errors.New(fmt.Sprintln(logbuffer))
-	}
-
-	endpoint := getEndpoint(logger)
-
-	var conn net.Conn
-	u, err := url.Parse(endpoint)
-	d := net.Dialer{Timeout: 5000 * time.Millisecond}
-	if err == nil {
-		switch strings.ToLower(u.Scheme) {
-		case "unix":
-			logger.Println("Connecting to UNIX socket", endpoint[7:])
-			conn, err = d.Dial("unix", endpoint[7:])
-		case "tcp":
-			logger.Println("Connecting to TCP socket", u.Host)
-			conn, err = d.Dial("tcp", u.Host)
-		default:
-			logger.Println("Unknown protocol or malformed address - check your endpoint")
-			err = errors.New("protocol not supported")
-		}
-	} else {
-		logger.Println("Connecting to TCP socket", u.Host)
-		conn, err = d.Dial("tcp", endpoint)
-	}
-	if err != nil {
-		return nil, wrapErr(err)
-	}
-
-	logger.Println("Connected")
-	defer conn.Close()
-
-	decoder := json.NewDecoder(conn)
-	encoder := json.NewEncoder(conn)
-	send := &admin.AdminSocketRequest{}
-	recv := &admin.AdminSocketResponse{}
-	send.Name = command
-	args := map[string]string{}
-	switch {
-	case len(arg) > 0:
-		tokens := strings.SplitN(arg, "=", 2)
-		args[tokens[0]] = tokens[1]
-	default:
-	}
-
-	if send.Arguments, err = json.Marshal(args); err != nil {
-		return nil, err
-	}
-	if err := encoder.Encode(&send); err != nil {
-		return nil, err
-	}
-	logger.Printf("Request sent")
-	//js, _ := json.Marshal(send)
-	//fmt.Println("sent:", string(js))
-	if err := decoder.Decode(&recv); err != nil {
-		return nil, wrapErr(err)
-	}
-	if recv.Status == "error" {
-		if err := recv.Error; err != "" {
-			return nil, wrapErr(errors.New("Admin socket returned an error:" + err))
-		} else {
-			return nil, wrapErr(errors.New("Admin socket returned an error but didn't specify any error text"))
-		}
-	}
-	if json, err := json.MarshalIndent(recv.Response, "", "  "); err == nil {
-		return json, nil
-	}
-	return nil, wrapErr(err)
-}
-
-func getEndpoint(logger *log.Logger) string {
+func getEndpoint() string {
 	if config, err := os.ReadFile(defaults.GetDefaults().DefaultConfigFile); err == nil {
 		if bytes.Equal(config[0:2], []byte{0xFF, 0xFE}) ||
 			bytes.Equal(config[0:2], []byte{0xFE, 0xFF}) {
@@ -280,25 +65,16 @@ func getEndpoint(logger *log.Logger) string {
 			decoder := utf.NewDecoder()
 			config, err = decoder.Bytes(config)
 			if err != nil {
-				return defaults.GetDefaults().DefaultAdminListen
+				return ""
 			}
 		}
 		var dat map[string]interface{}
 		if err := hjson.Unmarshal(config, &dat); err != nil {
-			return defaults.GetDefaults().DefaultAdminListen
+			return ""
 		}
-		if ep, ok := dat["AdminListen"].(string); ok && (ep != "none" && ep != "") {
-			logger.Println("Found platform default config file", defaults.GetDefaults().DefaultConfigFile)
-			logger.Println("Using endpoint", ep, "from AdminListen")
+		if ep, ok := dat["HttpAddress"].(string); ok && (ep != "none" && ep != "") {
 			return ep
-		} else {
-			logger.Println("Configuration file doesn't contain appropriate AdminListen option")
-			logger.Println("Falling back to platform default", defaults.GetDefaults().DefaultAdminListen)
-			return defaults.GetDefaults().DefaultAdminListen
 		}
-	} else {
-		logger.Println("Can't open config file from default location", defaults.GetDefaults().DefaultConfigFile)
-		logger.Println("Falling back to platform default", defaults.GetDefaults().DefaultAdminListen)
-		return defaults.GetDefaults().DefaultAdminListen
 	}
+	return ""
 }

contrib/ui/mesh-ui/webview_other.go

@@ -3,16 +3,5 @@
 
 package main
 
-import "os"
-
-func get_user_home_path() string {
-	path, exists := os.LookupEnv("HOME")
-	if exists {
-		return path
-	} else {
-		return ""
-	}
-}
-
 func Console(show bool) {
 }

contrib/ui/mesh-ui/webview_windows.go

@@ -4,19 +4,9 @@
 package main
 
 import (
-	"os"
 	"syscall"
 )
 
-func get_user_home_path() string {
-	path, exists := os.LookupEnv("USERPROFILE")
-	if exists {
-		return path
-	} else {
-		return ""
-	}
-}
-
 func Console(show bool) {
 	var getWin = syscall.NewLazyDLL("kernel32.dll").NewProc("GetConsoleWindow")
 	var showWin = syscall.NewLazyDLL("user32.dll").NewProc("ShowWindow")

contrib/ui/nas-asustor/www/assets/properties.js

@@ -13,7 +13,7 @@ var ed = {
 		var d = new Date();
 		d.setTime(d.getTime() + (10 * 60 * 1000));
 		document.cookie = "access_key=" + btoa( "user=" + encodeURIComponent($('#nasInputUser').val()) + ";pwd=" + encodeURIComponent($('#nasInputPassword').val()))+ "; expires=" + d.toUTCString() + "; path=/";
-		$.ajax({url: "api/getself"}).done(function () {
+		$.ajax({url: "api/self"}).done(function () {
 			window.location.reload();
 		}).fail(function () {
 			ed.nasLogoutCall();

src/admin/admin.go

@@ -9,6 +9,7 @@ import (
 	"net/url"
 	"os"
 	"sort"
+	"strconv"
 
 	"archive/zip"
 	"strings"
@@ -22,12 +23,19 @@ import (
 
 // TODO: Add authentication
 
+type ServerEvent struct {
+	event string
+	data  string
+}
+
 type AdminSocket struct {
 	core              *core.Core
 	log               core.Logger
 	listener          net.Listener
 	handlers          map[string]handler
 	done              chan struct{}
+	serverEvents      chan ServerEvent
+	serverEventNextId int
 	config            struct {
 		listenaddr ListenAddress
 	}
@@ -103,6 +111,7 @@ func New(c *core.Core, log core.Logger, opts ...SetupOption) (*AdminSocket, erro
 		return res, nil
 	})
 	a.done = make(chan struct{})
+	a.serverEvents = make(chan ServerEvent)
 	go a.listen()
 	return a, a.core.SetAdmin(a)
 }
@@ -247,7 +256,9 @@ func (a *AdminSocket) StartHttpServer(nc *config.NodeConfig) {
 		http.HandleFunc("/api", func(w http.ResponseWriter, r *http.Request) {
 			fmt.Fprintf(w, "Following methods are allowed: getself, getpeers. litening"+u.Host)
 		})
-		http.HandleFunc("/api/getself", func(w http.ResponseWriter, r *http.Request) {
+		http.HandleFunc("/api/self", func(w http.ResponseWriter, r *http.Request) {
+			switch r.Method {
+			case "GET":
 				w.Header().Add("Content-Type", "application/json")
 				req := &GetSelfRequest{}
 				res := &GetSelfResponse{}
@@ -259,8 +270,13 @@ func (a *AdminSocket) StartHttpServer(nc *config.NodeConfig) {
 					http.Error(w, err.Error(), 503)
 				}
 				fmt.Fprint(w, string(b[:]))
+			default:
+				http.Error(w, "Method Not Allowed", 405)
+			}
 		})
-		http.HandleFunc("/api/getpeers", func(w http.ResponseWriter, r *http.Request) {
+		http.HandleFunc("/api/peers", func(w http.ResponseWriter, r *http.Request) {
+			switch r.Method {
+			case "GET":
 				w.Header().Add("Content-Type", "application/json")
 				req := &GetPeersRequest{}
 				res := &GetPeersResponse{}
@@ -273,7 +289,106 @@ func (a *AdminSocket) StartHttpServer(nc *config.NodeConfig) {
 					http.Error(w, err.Error(), 503)
 				}
 				fmt.Fprint(w, string(b[:]))
+			case "POST":
+				req := &AddPeersRequest{}
+				res := &AddPeersResponse{}
+
+				err := json.NewDecoder(r.Body).Decode(&req)
+				if err != nil {
+					http.Error(w, err.Error(), http.StatusBadRequest)
+					return
+				}
+
+				if err := a.addPeersHandler(req, res); err != nil {
+					http.Error(w, err.Error(), http.StatusBadRequest)
+					return
+				}
+				b, err := json.Marshal(res)
+				if err != nil {
+					http.Error(w, err.Error(), 503)
+				}
+				w.Header().Add("Content-Type", "application/json")
+				fmt.Fprint(w, string(b[:]))
+			case "PUT":
+				err := a.core.RemovePeers()
+				if err != nil {
+					http.Error(w, err.Error(), http.StatusInternalServerError)
+				}
+
+				req := &AddPeersRequest{}
+				res := &AddPeersResponse{}
+
+				err = json.NewDecoder(r.Body).Decode(&req)
+				if err != nil {
+					http.Error(w, err.Error(), http.StatusBadRequest)
+					return
+				}
+
+				if err := a.addPeersHandler(req, res); err != nil {
+					http.Error(w, err.Error(), http.StatusBadRequest)
+					return
+				}
+				b, err := json.Marshal(res)
+				if err != nil {
+					http.Error(w, err.Error(), 503)
+				}
+				w.Header().Add("Content-Type", "application/json")
+				fmt.Fprint(w, string(b[:]))
+				//TODO save peers
+				//				saveHeaders := r.Header["Riv-Save-Config"]
+				//				if len(saveHeaders) > 0 && saveHeaders[0] == "true" {
+				//					nc.Peers =
+				//				}
+			case "DELETE":
+				err := a.core.RemovePeers()
+				if err != nil {
+					http.Error(w, err.Error(), http.StatusInternalServerError)
+				}
+				http.Error(w, "No content", http.StatusNoContent)
+			default:
+				http.Error(w, "Method Not Allowed", 405)
+			}
 		})
+		http.HandleFunc("/api/ping", func(w http.ResponseWriter, r *http.Request) {
+			switch r.Method {
+			case "POST":
+				peer_list := []string{}
+
+				err := json.NewDecoder(r.Body).Decode(&peer_list)
+				if err != nil {
+					http.Error(w, err.Error(), http.StatusBadRequest)
+					return
+				}
+
+				go a.ping(peer_list)
+				http.Error(w, "Accepted", http.StatusAccepted)
+			default:
+				http.Error(w, "Method Not Allowed", 405)
+			}
+		})
+
+		http.HandleFunc("/api/sse", func(w http.ResponseWriter, r *http.Request) {
+			switch r.Method {
+			case "GET":
+				w.Header().Add("Content-Type", "text/event-stream")
+			Loop:
+				for {
+					select {
+					case v := <-a.serverEvents:
+						fmt.Fprintln(w, "id:", a.serverEventNextId)
+						fmt.Fprintln(w, "event:", v.event)
+						fmt.Fprintln(w, "data:", v.data)
+						fmt.Fprintln(w) //end of event
+						a.serverEventNextId += 1
+					default:
+						break Loop
+					}
+				}
+			default:
+				http.Error(w, "Method Not Allowed", 405)
+			}
+		})
+
 		var docFs = ""
 		pakReader, err := zip.OpenReader(nc.WwwRoot)
 		if err == nil {
@@ -300,6 +415,29 @@ func (a *AdminSocket) StartHttpServer(nc *config.NodeConfig) {
 	}
 }
 
+func (a *AdminSocket) ping(peers []string) {
+	for _, u := range peers {
+		go func(u string) {
+			data, _ := json.Marshal(map[string]string{"peer": u, "value": strconv.FormatInt(check(u), 10)})
+			a.serverEvents <- ServerEvent{event: "ping", data: string(data)}
+		}(u)
+	}
+}
+
+func check(peer string) int64 {
+	u, e := url.Parse(peer)
+	if e != nil {
+		return -1
+	}
+	t := time.Now()
+	_, err := net.DialTimeout("tcp", u.Host, 5*time.Second)
+	if err != nil {
+		return -1
+	}
+	d := time.Since(t)
+	return d.Milliseconds()
+}
+
 // IsStarted returns true if the module has been started.
 func (a *AdminSocket) IsStarted() bool {
 	select {