v1.7. New optional checking feature: URL test.

2025-12-06 03:26:50 +03:00 · 2025-10-08 22:42:15 +03:00
parent 87d28fb618
commit b69fcf0bb2
14 changed files with 332 additions and 94 deletions
--- a/README.md
+++ b/README.md
@@ -3,7 +3,8 @@ Internet-detector is an application for checking the availability of the Interne

 **Features:**
 - It can run continuously as a system service or only in an open web interface.
- - Checking the availability of a host using ping or by connecting via TCP to a specified port.
+ - Checking the availability of a host using ping (L3) or by connecting via TCP to a specified port (L4).
+ - Testing URL accessibility via HTTP (L7) (curl).
 - LED indication of Internet availability.
 ![](https://github.com/gSpotx2f/luci-app-internet-detector/blob/master/screenshots/internet-led.jpg)
 - Performing actions when connecting and disconnecting the Internet: rebooting device, restarting network or modem (internet-detector-mod-modem-restart), executing custom shell scripts.
@@ -20,22 +21,22 @@ Internet-detector is an application for checking the availability of the Interne
 ## Installation notes:

    opkg update
-    wget --no-check-certificate -O /tmp/internet-detector_1.6.7-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/internet-detector_1.6.7-r1_all.ipk
-    opkg install /tmp/internet-detector_1.6.7-r1_all.ipk
-    rm /tmp/internet-detector_1.6.7-r1_all.ipk
+    wget --no-check-certificate -O /tmp/internet-detector_1.7.0-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/internet-detector_1.7.0-r1_all.ipk
+    opkg install /tmp/internet-detector_1.7.0-r1_all.ipk
+    rm /tmp/internet-detector_1.7.0-r1_all.ipk
    service internet-detector start
    service internet-detector enable

-    wget --no-check-certificate -O /tmp/luci-app-internet-detector_1.6.7-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/luci-app-internet-detector_1.6.7-r1_all.ipk
-    opkg install /tmp/luci-app-internet-detector_1.6.7-r1_all.ipk
-    rm /tmp/luci-app-internet-detector_1.6.7-r1_all.ipk
+    wget --no-check-certificate -O /tmp/luci-app-internet-detector_1.7.0-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/luci-app-internet-detector_1.7.0-r1_all.ipk
+    opkg install /tmp/luci-app-internet-detector_1.7.0-r1_all.ipk
+    rm /tmp/luci-app-internet-detector_1.7.0-r1_all.ipk
    service rpcd restart

 i18n-ru:

-    wget --no-check-certificate -O /tmp/luci-i18n-internet-detector-ru_1.6.7-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/luci-i18n-internet-detector-ru_1.6.7-r1_all.ipk
-    opkg install /tmp/luci-i18n-internet-detector-ru_1.6.7-r1_all.ipk
-    rm /tmp/luci-i18n-internet-detector-ru_1.6.7-r1_all.ipk
+    wget --no-check-certificate -O /tmp/luci-i18n-internet-detector-ru_1.7.0-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/luci-i18n-internet-detector-ru_1.7.0-r1_all.ipk
+    opkg install /tmp/luci-i18n-internet-detector-ru_1.7.0-r1_all.ipk
+    rm /tmp/luci-i18n-internet-detector-ru_1.7.0-r1_all.ipk

 ## Screenshots:

@@ -47,9 +48,9 @@ i18n-ru:

 **Dependences:** modemmanager.

-    wget --no-check-certificate -O /tmp/internet-detector-mod-modem-restart_1.6.7-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/internet-detector-mod-modem-restart_1.6.7-r1_all.ipk
-    opkg install /tmp/internet-detector-mod-modem-restart_1.6.7-r1_all.ipk
-    rm /tmp/internet-detector-mod-modem-restart_1.6.7-r1_all.ipk
+    wget --no-check-certificate -O /tmp/internet-detector-mod-modem-restart_1.7.0-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/internet-detector-mod-modem-restart_1.7.0-r1_all.ipk
+    opkg install /tmp/internet-detector-mod-modem-restart_1.7.0-r1_all.ipk
+    rm /tmp/internet-detector-mod-modem-restart_1.7.0-r1_all.ipk
    service internet-detector restart

 ![](https://github.com/gSpotx2f/luci-app-internet-detector/blob/master/screenshots/04.jpg)
@@ -58,9 +59,9 @@ i18n-ru:

 **Dependences:** mailsend.

-    wget --no-check-certificate -O /tmp/internet-detector-mod-email_1.6.7-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/internet-detector-mod-email_1.6.7-r1_all.ipk
-    opkg install /tmp/internet-detector-mod-email_1.6.7-r1_all.ipk
-    rm /tmp/internet-detector-mod-email_1.6.7-r1_all.ipk
+    wget --no-check-certificate -O /tmp/internet-detector-mod-email_1.7.0-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/internet-detector-mod-email_1.7.0-r1_all.ipk
+    opkg install /tmp/internet-detector-mod-email_1.7.0-r1_all.ipk
+    rm /tmp/internet-detector-mod-email_1.7.0-r1_all.ipk
    service internet-detector restart

 ![](https://github.com/gSpotx2f/luci-app-internet-detector/blob/master/screenshots/05.jpg)
@@ -69,9 +70,9 @@ i18n-ru:

 **Dependences:** curl.

-    wget --no-check-certificate -O /tmp/internet-detector-mod-telegram_1.6.7-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/internet-detector-mod-telegram_1.6.7-r1_all.ipk
-    opkg install /tmp/internet-detector-mod-telegram_1.6.7-r1_all.ipk
-    rm /tmp/internet-detector-mod-telegram_1.6.7-r1_all.ipk
+    wget --no-check-certificate -O /tmp/internet-detector-mod-telegram_1.7.0-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/internet-detector-mod-telegram_1.7.0-r1_all.ipk
+    opkg install /tmp/internet-detector-mod-telegram_1.7.0-r1_all.ipk
+    rm /tmp/internet-detector-mod-telegram_1.7.0-r1_all.ipk
    service internet-detector restart

 ![](https://github.com/gSpotx2f/luci-app-internet-detector/blob/master/screenshots/06.jpg)
--- a/internet-detector-mod-email/Makefile
+++ b/internet-detector-mod-email/Makefile
@@ -5,7 +5,7 @@
 include $(TOPDIR)/rules.mk

 PKG_NAME:=internet-detector-mod-email
-PKG_VERSION:=1.6.7
+PKG_VERSION:=1.7.0
 PKG_RELEASE:=1
 PKG_MAINTAINER:=gSpot <https://github.com/gSpotx2f/luci-app-internet-detector>

--- a/internet-detector-mod-modem-restart/Makefile
+++ b/internet-detector-mod-modem-restart/Makefile
@@ -5,7 +5,7 @@
 include $(TOPDIR)/rules.mk

 PKG_NAME:=internet-detector-mod-modem-restart
-PKG_VERSION:=1.6.7
+PKG_VERSION:=1.7.0
 PKG_RELEASE:=1
 PKG_MAINTAINER:=gSpot <https://github.com/gSpotx2f/luci-app-internet-detector>

--- a/internet-detector-mod-telegram/Makefile
+++ b/internet-detector-mod-telegram/Makefile
@@ -5,7 +5,7 @@
 include $(TOPDIR)/rules.mk

 PKG_NAME:=internet-detector-mod-telegram
-PKG_VERSION:=1.6.7
+PKG_VERSION:=1.7.0
 PKG_RELEASE:=1
 PKG_MAINTAINER:=gSpot <https://github.com/gSpotx2f/luci-app-internet-detector>

--- a/internet-detector-mod-telegram/files/usr/lib/lua/internet-detector/modules/mod_telegram.lua
+++ b/internet-detector-mod-telegram/files/usr/lib/lua/internet-detector/modules/mod_telegram.lua
@@ -28,7 +28,7 @@ local Module = {
 	msgSendAttempts      = 3,
 	msgSendTimeout       = 5,
 	curlExec             = "/usr/bin/curl",
-	curlParams           = "-s",
+	curlParams           = "-s --no-keepalive",
 	status               = nil,
 	_enabled             = false,
 	_deadCounter         = 0,
--- a/internet-detector/Makefile
+++ b/internet-detector/Makefile
@@ -5,7 +5,7 @@
 include $(TOPDIR)/rules.mk

 PKG_NAME:=internet-detector
-PKG_VERSION:=1.6.7
+PKG_VERSION:=1.7.0
 PKG_RELEASE:=1
 PKG_MAINTAINER:=gSpot <https://github.com/gSpotx2f/luci-app-internet-detector>

--- a/internet-detector/files/etc/config/internet-detector
+++ b/internet-detector/files/etc/config/internet-detector
@@ -8,6 +8,7 @@ config instance 'internet'
 	option description 'Default instance'
 	list hosts '8.8.8.8'
 	list hosts '1.1.1.1'
+	list urls 'https://www.google.com'
 	option check_type '0'
 	option tcp_port '53'
 	option interval_up '30'
--- a/internet-detector/files/usr/lib/lua/internet-detector/main.lua
+++ b/internet-detector/files/usr/lib/lua/internet-detector/main.lua
@@ -12,32 +12,8 @@ local uci    = require("uci")
 -- Default settings

 local InternetDetector = {
-	mode           = 0,		-- 0: disabled, 1: Service, 2: UI detector
-	loggingLevel   = 6,
-	hostname       = "OpenWrt",
 	appName        = "internet-detector",
 	libDir         = "/usr/lib/lua",
-	pingCmd        = "/bin/ping",
-	pingParams     = "-c 1",
-	uiRunTime      = 30,
-	noModules      = false,
-	uiAvailModules = { mod_public_ip = true },
-	debug          = false,
-	serviceConfig  = {
-		hosts = {
-			[1] = "8.8.8.8",
-			[2] = "1.1.1.1",
-		},
-		check_type          = 0,	-- 0: TCP, 1: ICMP
-		tcp_port            = 53,
-		icmp_packet_size    = 56,
-		interval_up         = 30,
-		interval_down       = 5,
-		connection_attempts = 2,
-		connection_timeout  = 2,
-		iface               = nil,
-		instance            = nil,
-	},
 	logLevels = {
 		emerg   = { level = syslog.LOG_EMERG,   num = 0 },
 		alert   = { level = syslog.LOG_ALERT,   num = 1 },
@@ -48,8 +24,41 @@ local InternetDetector = {
 		info    = { level = syslog.LOG_INFO,    num = 6 },
 		debug   = { level = syslog.LOG_DEBUG,   num = 7 },
 	},
+	pingCmd        = "/bin/ping",
+	pingParams     = "-c 1",
+	curlExec       = "/usr/bin/curl",
+	curlParams     = '-s --no-keepalive --head --user-agent "Mozilla/5.0 (X11; Linux x86_64; rv:142.0) Gecko/20100101 Firefox/142.0"',
+	mode           = 0,		-- 0: disabled, 1: Service, 2: UI detector
+	loggingLevel   = 6,
+	hostname       = "OpenWrt",
+	uiRunTime      = 30,
+	noModules      = false,
+	uiAvailModules = { mod_public_ip = true },
+	debug          = false,
+	serviceConfig  = {
+		hosts = {
+			[1] = "8.8.8.8",
+			[2] = "1.1.1.1",
+		},
+		urls = {
+			[1] = "https://www.google.com",
+		},
+		check_type          = 0,	-- 0: TCP, 1: ICMP
+		tcp_port            = 53,
+		icmp_packet_size    = 56,
+		interval_up         = 30,
+		interval_down       = 5,
+		connection_attempts = 2,
+		connection_timeout  = 2,
+		proxy_type          = nil,
+		proxy_host          = nil,
+		proxy_port          = nil,
+		iface               = nil,
+		instance            = nil,
+	},
 	modules       = {},
 	parsedHosts   = {},
+	proxyString   = "",
 	uiCounter     = 0,
 	pidFile       = nil,
 	statusFile    = nil,
@@ -213,6 +222,13 @@ function InternetDetector:parseHosts()
 	end
 end

+function InternetDetector:parseUrls()
+	self.parsedHosts = {}
+	for k, v in ipairs(self.serviceConfig.urls) do
+		self.parsedHosts[k] = { addr = v }
+	end
+end
+
 function InternetDetector:pingHost(host)
 	local ping = string.format(
 		"%s %s -W %d -s %d%s %s > /dev/null 2>&1",
@@ -240,6 +256,7 @@ function InternetDetector:TCPConnectionToHost(host, port)
 			"GETADDRINFO ERROR: %s, %s", errMsg, errNum))
 	else
 		local family = saTable[1].family
+
 		if family then
 			local sock, errMsg, errNum = socket.socket(family, socket.SOCK_STREAM, 0)

@@ -307,6 +324,60 @@ function InternetDetector:TCPConnectionToHost(host, port)
 	return retCode
 end

+function InternetDetector:httpRequest(url)
+	local retCode = 1, data
+	local curl = string.format(
+		'%s%s%s --connect-timeout %s %s "%s"; printf "\n$?";',
+		self.curlExec,
+		self.serviceConfig.iface and (" --interface " .. self.serviceConfig.iface) or "",
+		self.proxyString,
+		self.serviceConfig.connection_timeout,
+		self.curlParams,
+		url
+	)
+	local fh = io.popen(curl, "r")
+	if fh then
+		data = fh:read("*a")
+		fh:close()
+		if data ~= nil then
+			local s, e = data:find("[0-9]+\n?$")
+			retCode    = tonumber(data:sub(s))
+			data       = data:sub(0, s - 2)
+			if not data or data == "" then
+				data = nil
+			end
+		end
+	else
+		retCode = 1
+	end
+
+	self:debugOutput(string.format(
+		"--- Curl ---\ntime = %s\n%s\nretCode = %s\ndata = [\n%s]\n",
+		os.time(),
+		curl,
+		retCode,
+		tostring(data)))
+	return retCode, data
+end
+
+function InternetDetector:getHTTPCode(data)
+	local httpCode
+	local respHeader = data:match("^HTTP/[^%c]+")
+	if respHeader then
+		httpCode = respHeader:match("%d%d%d")
+	end
+	return tonumber(httpCode)
+end
+
+function InternetDetector:checkURL(url)
+	local httpCode
+	local retCode, data = self:httpRequest(url)
+	if retCode == 0 and data then
+		httpCode = self:getHTTPCode(data)
+	end
+	return (httpCode ~= 200) and 1 or 0
+end
+
 function InternetDetector:exit()
 	for _, e in ipairs(self.modules) do
 		e:onExit()
@@ -339,7 +410,25 @@ function InternetDetector:mainLoop()
 	local checking      = false
 	local hostNum       = 1
 	local attempt       = 1
-	local checkFunc     = (self.serviceConfig.check_type == 1) and self.pingHost or self.TCPConnectionToHost
+
+	local checkFunc = self.TCPConnectionToHost
+	if self.serviceConfig.check_type == 1 then
+		checkFunc = self.pingHost
+		self:parseHosts()
+	elseif self.serviceConfig.check_type == 2 then
+		checkFunc = self.checkURL
+		self:parseUrls()
+		if (self.serviceConfig.proxy_type and self.serviceConfig.proxy_host and
+			self.serviceConfig.proxy_port) then
+			self.proxyString = string.format(
+				" --proxy %s://%s:%d",
+				self.serviceConfig.proxy_type,
+				self.serviceConfig.proxy_host,
+				self.serviceConfig.proxy_port)
+		end
+	else
+		self:parseHosts()
+	end

 	self:writeValueToFile(
 		self.statusFile, self:statusJson(currentStatus, self.serviceConfig.instance))
@@ -599,6 +688,11 @@ function InternetDetector:preRun()
 			os.exit(1)
 		end
 	end
+	if self.serviceConfig.check_type == 2 and not unistd.access(self.curlExec, "x") then
+		io.stderr:write(string.format(
+			"Error, %s is not available. You need to install curl.\n", self.curlExec))
+		os.exit(1)
+	end
 	local ok, commonDir = pcall(dirent.files, self.commonDir)
 	if ok then
 		local instancePattern = "^" .. self.appNamePattern .. "%." .. self.serviceConfig.instance .. "%.[%d]+%.pid$"
@@ -689,7 +783,6 @@ end

 function InternetDetector:setServiceConfig(instance)
 	if self:loadInstanceConfig(instance) then
-		self:parseHosts()
 		if self.mode == 2 then
 			self.loggingLevel = 0
 			self.noModules    = true
--- a/internet-detector/files/usr/lib/lua/internet-detector/modules/mod_public_ip.lua
+++ b/internet-detector/files/usr/lib/lua/internet-detector/modules/mod_public_ip.lua
@@ -11,6 +11,9 @@ local Module = {
 		debug         = false,
 		serviceConfig = {
 			iface      = nil,
+			proxy_type = nil,
+			proxy_host = nil,
+			proxy_port = nil,
 		},
 	},
 	syslog               = function(level, msg) return true end,
@@ -24,7 +27,7 @@ local Module = {
 	requestAttempts      = 2,
 	timeout              = 3,
 	curlExec             = "/usr/bin/curl",
-	curlParams           = "-s",
+	curlParams           = '-s --no-keepalive --user-agent "Mozilla/5.0 (X11; Linux x86_64; rv:142.0) Gecko/20100101 Firefox/142.0"',
 	providers            = {
 		opendns1 = {
 			name    = "opendns1", type = "dns", host = "myip.opendns.com",
@@ -88,6 +91,7 @@ local Module = {
 	ipScript             = "",
 	enableIpScript       = false,
 	status               = nil,
+	_proxyString         = "",
 	_provider            = nil,
 	_qtype               = false,
 	_currentIp           = nil,
@@ -177,6 +181,7 @@ function Module:sendUDPMessage(message, server, port)
 			"GETADDRINFO ERROR: %s, %s", errMsg, errNum))
 	else
 		local family = saTable[1].family
+
 		if family then
 			local sock, errMsg, errNum = socket.socket(family, socket.SOCK_DGRAM, 0)

@@ -266,12 +271,13 @@ function Module:decodeMessage(message)
 	local NSCOUNT = message:sub(17, 20)
 	local ARCOUNT = message:sub(21, 24)

+	-- Question section
 	local questionSectionStarts = 25
-
 	local questionParts = self:parseParts(message, questionSectionStarts, {})
 	local qtypeStarts   = questionSectionStarts + (#table.concat(questionParts)) + (#questionParts * 2) + 1
 	local qclassStarts  = qtypeStarts + 4

+	-- Answer section
 	local answerSectionStarts = qclassStarts + 4
 	local numAnswers          = math.max(
 		tonumber(ANCOUNT, 16), tonumber(NSCOUNT, 16), tonumber(ARCOUNT, 16))
@@ -351,9 +357,10 @@ end
 function Module:httpRequest(url)
 	local retCode = 1, data
 	local curl    = string.format(
-		'%s%s --connect-timeout %s %s "%s"; printf "\n$?";',
+		'%s%s%s --connect-timeout %s %s "%s"; printf "\n$?";',
 		self.curlExec,
 		self.config.serviceConfig.iface and (" --interface " .. self.config.serviceConfig.iface) or "",
+		self._proxyString,
 		self.timeout,
 		self.curlParams,
 		url
@@ -373,6 +380,14 @@ function Module:httpRequest(url)
 	else
 		retCode = 1
 	end
+
+	self.debugOutput(string.format(
+		"--- Curl ---\ntime = %s\n%s\nretCode = %s\ndata = [\n%s]\n",
+		os.time(),
+		curl,
+		retCode,
+		tostring(data))
+	)
 	return retCode, data
 end

@@ -454,6 +469,15 @@ function Module:init(t)
 			self._enabled = false
 		end
 	end
+	if (self.config.serviceConfig.proxy_type and
+		self.config.serviceConfig.proxy_host and
+		self.config.serviceConfig.proxy_port) then
+		self._proxyString = string.format(
+			" --proxy %s://%s:%d",
+			self.config.serviceConfig.proxy_type,
+			self.config.serviceConfig.proxy_host,
+			self.config.serviceConfig.proxy_port)
+	end
 end

 function Module:run(currentStatus, lastStatus, timeDiff, timeNow, inetChecked)
--- a/luci-app-internet-detector/Makefile
+++ b/luci-app-internet-detector/Makefile
@@ -5,7 +5,7 @@
 include $(TOPDIR)/rules.mk

 PKG_NAME:=luci-app-internet-detector
-PKG_VERSION:=1.6.7
+PKG_VERSION:=1.7.0
 PKG_RELEASE:=1
 LUCI_TITLE:=LuCI support for internet-detector
 LUCI_DEPENDS:=+internet-detector
--- a/luci-app-internet-detector/htdocs/luci-static/resources/view/internet-detector.js
+++ b/luci-app-internet-detector/htdocs/luci-static/resources/view/internet-detector.js
@@ -173,9 +173,29 @@ return view.extend({
 	initButton             : null,
 	currentAppMode         : '0',
 	defaultHosts           : [ '8.8.8.8', '1.1.1.1' ],
+	defaultURLs            : [ 'https://www.google.com' ],
 	ledsPath               : '/sys/class/leds',
 	ledsPerInstance        : 3,
 	leds                   : [],
+	publicIPProviders      : {
+		dns : [
+			{ name: 'opendns1', title: 'opendns1 (DNS)' },
+			{ name: 'opendns2', title: 'opendns2 (DNS)' },
+			{ name: 'opendns3', title: 'opendns3 (DNS)' },
+			{ name: 'opendns4', title: 'opendns4 (DNS)' },
+			{ name: 'google',   title: 'google (DNS)' },
+			{ name: 'akamai',   title: 'akamai (DNS)' },
+		],
+		http: [
+			{ name: 'akamai_http', title: 'akamai (HTTP)' },
+			{ name: 'amazonaws',   title: 'amazonaws (HTTP)' },
+			{ name: 'wgetip',      title: 'wgetip.com (HTTP)' },
+			{ name: 'ifconfig',    title: 'ifconfig.me (HTTP)' },
+			{ name: 'ipecho',      title: 'ipecho.net (HTTP)' },
+			{ name: 'canhazip',    title: 'canhazip.com (HTTP)' },
+			{ name: 'icanhazip',   title: 'icanhazip.com (HTTP)' },
+		],
+	},
 	tgUpdatesURLPattern    : 'https://api.telegram.org/bot%s/getUpdates',
 	mm                     : false,
 	mmInit                 : false,
@@ -415,6 +435,11 @@ return view.extend({
 		});
 	},

+	validateUrl(section, value) {
+		return (/^$|^https?:\/\/[\w.-]+(:[0-9]{2,5})?[\w\/~.&?+=-]*$/.test(value)) ?
+			true : _('Expecting:') + ` ${_('valid URL')}\n`;
+	},
+
 	CBITimeInput: form.Value.extend({
 		__name__ : 'CBI.TimeInput',

@@ -771,19 +796,41 @@ return view.extend({
 		// hosts
 		o = s.taboption('main', form.DynamicList,
 			'hosts', _('Hosts'),
-			_('Hosts to check Internet availability. Hosts are polled (in list order) until at least one of them responds.')
+			_('Hosts for checking Internet availability. Hosts are polled (in list order) until at least one responds.')
 		);
 		o.datatype  = 'or(host,hostport,ipaddrport(1))';
 		o.default   = this.defaultHosts;
+		o.depends({ check_type: '0' });
+		o.depends({ check_type: '1' });
 		o.rmempty   = false;
+		o.modalonly = true;
+
+		if(this.curlExec) {
+
+			// urls
+			o = s.taboption('main', form.DynamicList,
+				'urls', _('URLs'),
+				_('URLs for checking Internet availability. URLs are polled (in list order) until at least one returns HTTP status code 200.')
+			);
+			o.validate  = this.validateUrl;
+			o.default   = this.defaultURLs;
+			o.rmempty   = false;
+			o.depends({ check_type: '2' });
+			o.modalonly = true;
+		};

 		// check_type
 		o = s.taboption('main', form.ListValue,
 			'check_type', _('Check type'),
-			_('Host availability check type.')
+			_('Host availability check type.') + '<br />' +
+			((this.curlExec) ? '' :
+				_('To support URL checking, you need to install curl.'))
 		);
-		o.value(0, _('TCP port connection'));
 		o.value(1, _('ICMP-echo request (ping)'));
+		o.value(0, _('TCP port connection'));
+		if(this.curlExec) {
+			o.value(2, _('URL test (HTTP)'));
+		};
 		o.default   = '0';
 		o.modalonly = true;

@@ -810,6 +857,41 @@ return view.extend({
 		o.depends({ check_type: '1' });
 		o.modalonly = true;

+		if(this.curlExec) {
+
+			// proxy_type
+			o = s.taboption('main', form.ListValue,
+				'proxy_type', _('Proxy')
+			);
+			o.value('', _('Disabled'));
+			o.value('http');
+			o.value('socks4');
+			o.value('socks4a');
+			o.value('socks5');
+			o.value('socks5h');
+			o.default   = '';
+			o.depends({ check_type: '2' });
+			o.modalonly = true;
+
+			// proxy_host
+			o = s.taboption('main', form.Value,
+				'proxy_host', _('Proxy host')
+			);
+			o.datatype  = 'host';
+			o.rmempty   = false;
+			o.depends({ proxy_type: /.+/ });
+			o.modalonly = true;
+
+			// proxy_port
+			o = s.taboption('main', form.Value,
+				'proxy_port', _('Proxy port')
+			);
+			o.datatype  = 'port';
+			o.rmempty   = false;
+			o.depends({ proxy_type: /.+/ });
+			o.modalonly = true;
+		};
+
 		// iface
 		o = s.taboption('main', widgets.DeviceSelect,
 			'iface', _('Device'),
@@ -857,6 +939,11 @@ return view.extend({
 		o.value(3,  '3 ' + _('sec'));
 		o.value(4,  '4 ' + _('sec'));
 		o.value(5,  '5 ' + _('sec'));
+		o.value(6,  '6 ' + _('sec'));
+		o.value(7,  '7 ' + _('sec'));
+		o.value(8,  '8 ' + _('sec'));
+		o.value(9,  '9 ' + _('sec'));
+		o.value(10, '10 ' + _('sec'));
 		o.default = '2';

 		// enabled
@@ -1146,6 +1233,7 @@ return view.extend({
 				);
 				o.modalonly = true;
 				o.multiple  = true;
+				o.modalonly = true;

 				// attempts
 				o = s.taboption('restart_network', form.ListValue,
@@ -1327,25 +1415,18 @@ return view.extend({
 				'mod_public_ip_provider', _('Provider'),
 				_('Service for determining the public IP address.') + '<br />' +
 				((this.curlExec) ? '' :
-					_('To support HTTP services you need to install curl.'))
+					_('To support HTTP services, you need to install curl.'))
 			);
 			o.modalonly = true;
-			o.value('opendns1', 'opendns1 (DNS)');
-			o.value('opendns2', 'opendns2 (DNS)');
-			o.value('opendns3', 'opendns3 (DNS)');
-			o.value('opendns4', 'opendns4 (DNS)');
-			o.value('google',   'google (DNS)');
-			o.value('akamai',   'akamai (DNS)');
-			if(this.curlExec) {
-				o.value('akamai_http', "akamai (HTTP)");
-				o.value('amazonaws',   "amazonaws (HTTP)");
-				o.value('wgetip',      "wgetip.com (HTTP)");
-				o.value('ifconfig',    "ifconfig.me (HTTP)");
-				o.value('ipecho',      "ipecho.net (HTTP)");
-				o.value('canhazip',    "canhazip.com (HTTP)");
-				o.value('icanhazip',   "icanhazip.com (HTTP)");
+			for(let i of this.publicIPProviders.dns) {
+				o.value(i.name, i.title);
 			};
-			o.default = 'opendns1';
+			if(this.curlExec) {
+				for(let i of this.publicIPProviders.http) {
+					o.value(i.name, i.title);
+				};
+			};
+			o.default = this.publicIPProviders.dns[0].name;

 			// ipv6
 			o = s.taboption('public_ip', form.ListValue,
@@ -1356,12 +1437,9 @@ return view.extend({
 			o.value('0', 'A (IPv4)');
 			o.value('1', 'AAAA (IPv6)');
 			o.default = '0';
-			o.depends({ 'mod_public_ip_provider': 'opendns1' });
-			o.depends({ 'mod_public_ip_provider': 'opendns2' });
-			o.depends({ 'mod_public_ip_provider': 'opendns3' });
-			o.depends({ 'mod_public_ip_provider': 'opendns4' });
-			o.depends({ 'mod_public_ip_provider': 'google' });
-			o.depends({ 'mod_public_ip_provider': 'akamai' });
+			for(let i of this.publicIPProviders.dns) {
+				o.depends({ mod_public_ip_provider: i.name });
+			};

 			// interval
 			o = s.taboption('public_ip', form.ListValue,
@@ -1620,7 +1698,6 @@ return view.extend({
 						o.password  = true;
 						o.modalonly = true;

-						// tg_chat_id
 						o = s.taboption('telegram', this.CBITextfieldButtonInput,
 							'mod_telegram_chat_id', _('Chat ID'),
 							_('ID of the Telegram chat to which messages will be sent.')
--- a/luci-app-internet-detector/po/ru/internet-detector.po
+++ b/luci-app-internet-detector/po/ru/internet-detector.po
@@ -212,8 +212,8 @@ msgid "Hosts polling interval when the Internet is up."
 msgstr "Интервал опроса хостов если Интернет доступен."

 msgid ""
-"Hosts to check Internet availability. Hosts are polled (in list order) until "
-"at least one of them responds."
+"Hosts for checking Internet availability. Hosts are polled (in list "
+"order) until at least one responds."
 msgstr ""
 "Хосты для проверки доступности Интернет. Хосты опрашиваются (в порядке "
 "списка) до тех пор, пока хотя бы один из них не ответит."
@@ -444,6 +444,15 @@ msgstr "Интервал опроса"
 msgid "Provider"
 msgstr "Провайдер"

+msgid "Proxy"
+msgstr "Прокси"
+
+msgid "Proxy host"
+msgstr "Хост прокси"
+
+msgid "Proxy port"
+msgstr "Порт прокси"
+
 msgid "Public IP"
 msgstr "Публичный IP"

@@ -600,9 +609,12 @@ msgstr "Таймаут между остановкой и запуском се
 msgid "Timeout between stopping and starting a ModemManger interface when restarting."
 msgstr "Таймаут между остановкой и запуском интерфейса ModemManger при перезапуске."

-msgid "To support HTTP services you need to install curl."
+msgid "To support HTTP services, you need to install curl."
 msgstr "Для поддержки HTTP сервисов необходимо установить curl."

+msgid "To support URL checking, you need to install curl."
+msgstr "Для поддержки проверки URL необходимо установить curl."
+
 msgid "Transmit"
 msgstr "Передача"

@@ -621,6 +633,16 @@ msgstr "Неопределён"
 msgid "Unlock modem bands"
 msgstr "Освободить частоты модема"

+msgid "URL test (HTTP)"
+msgstr "Тест URL (HTTP)"
+
+msgid ""
+"URLs for checking Internet availability. URLs are polled (in list "
+"order) until at least one returns HTTP status code 200."
+msgstr ""
+"URL для проверки доступности Интернет. URL опрашиваются (в порядке "
+"списка) до тех пор, пока хотя бы один из них не вернёт код статуса HTTP 200."
+
 msgid "User"
 msgstr "Пользователь"

--- a/luci-app-internet-detector/po/templates/internet-detector.pot
+++ b/luci-app-internet-detector/po/templates/internet-detector.pot
@@ -199,8 +199,8 @@ msgid "Hosts polling interval when the Internet is up."
 msgstr ""

 msgid ""
-"Hosts to check Internet availability. Hosts are polled (in list order) until "
-"at least one of them responds."
+"Hosts for checking Internet availability. Hosts are polled (in list "
+"order) until at least one responds."
 msgstr ""

 msgid "Huge: 1492 bytes"
@@ -415,6 +415,15 @@ msgstr ""
 msgid "Provider"
 msgstr ""

+msgid "Proxy"
+msgstr ""
+
+msgid "Proxy host"
+msgstr ""
+
+msgid "Proxy port"
+msgstr ""
+
 msgid "Public IP"
 msgstr ""

@@ -571,7 +580,10 @@ msgstr ""
 msgid "Timeout between stopping and starting a ModemManger interface when restarting."
 msgstr ""

-msgid "To support HTTP services you need to install curl."
+msgid "To support HTTP services, you need to install curl."
+msgstr ""
+
+msgid "To support URL checking, you need to install curl."
 msgstr ""

 msgid "Transmit"
@@ -592,6 +604,14 @@ msgstr ""
 msgid "Unlock modem bands"
 msgstr ""

+msgid "URL test (HTTP)"
+msgstr ""
+
+msgid ""
+"URLs for checking Internet availability. URLs are polled (in list "
+"order) until at least one returns HTTP status code 200."
+msgstr ""
+
 msgid "User"
 msgstr ""

--- a/screenshots/01.jpg
+++ b/screenshots/01.jpg