Node Red flow to reconnect IPACCT based Internet connection (Alliance - kolkata). Adjust your gateway ip , username and password before deploy. To use, import from nodered

noderedflowexport.json

[{
	"id": "c0559cc8.1dad9",
	"type": "tab",
	"label": "Reconnect IPACCT",
	"disabled": false,
	"info": "Reconnects alliance internet on ipacct"
},
{
	"id": "fd308698.8ce298",
	"type": "debug",
	"z": "c0559cc8.1dad9",
	"name": "netping",
	"active": true,
	"console": "false",
	"complete": "payload",
	"x": 540,
	"y": 60,
	"wires": []
},
{
	"id": "5a2164e2.30d97c",
	"type": "ping",
	"z": "c0559cc8.1dad9",
	"name": "checkalive",
	"host": "www.google.com",
	"timer": "5",
	"x": 141,
	"y": 249,
	"wires": [["28239459.e1c00c"]]
},
{
	"id": "28239459.e1c00c",
	"type": "switch",
	"z": "c0559cc8.1dad9",
	"name": "ifalive",
	"property": "payload",
	"propertyType": "msg",
	"rules": [{
		"t": "gt",
		"v": "0",
		"vt": "num"
	},
	{
		"t": "else"
	}],
	"checkall": "true",
	"outputs": 2,
	"x": 340,
	"y": 249,
	"wires": [["fd308698.8ce298"],
	["2075444b.c0abbc",
	"252b9bf3.722eb4",
	"e99e6078.54aeb"]]
},
{
	"id": "2075444b.c0abbc",
	"type": "mqtt out",
	"z": "c0559cc8.1dad9",
	"name": "No-Internet",
	"topic": "nointernet",
	"qos": "",
	"retain": "",
	"broker": "e8bac9ec.d09928",
	"x": 557,
	"y": 117,
	"wires": []
},
{
	"id": "6d0bcc10.8e6c04",
	"type": "http request",
	"z": "c0559cc8.1dad9",
	"name": "connectnet",
	"method": "POST",
	"ret": "txt",
	"url": "<GATEWAYIP>",
	"tls": "",
	"x": 490,
	"y": 320,
	"wires": [["539dae3e.d61f1"]],
	"inputLabels": ["<form class=\"loginform\" method=\"post\">  \t\t<fieldset>  \t\t\t<legend>Internet Access Log-in</legend>  \t\t\t<div>  \t\t\t\t<label for=\"username\">Username:</label> <input class=\"logininput\" type=\"text\" id=\"username\" name=\"user\">  \t\t\t</div>  \t\t\t<div>  \t\t\t\t<label for=\"password\">Password:</label> <input class=\"logininput\" type=\"password\" id=\"password\" name=\"pass\">  \t\t\t</div>  \t\t</fieldset>  \t<div><button type=\"submit\" name=\"login\" value=\"Login\" class=\"btnlink1\">Login </button></div>  \t<br><br> </form>"]
},
{
	"id": "3a0e9598.c7eefa",
	"type": "mqtt out",
	"z": "c0559cc8.1dad9",
	"name": "netconnected",
	"topic": "netconnected",
	"qos": "",
	"retain": "",
	"broker": "e8bac9ec.d09928",
	"x": 700,
	"y": 340,
	"wires": []
},
{
	"id": "252b9bf3.722eb4",
	"type": "function",
	"z": "c0559cc8.1dad9",
	"name": "genpostdata",
	"func": "msg.payload={\n    \"user\": \"<USERNAME>\",\n    \"pass\": \"<PASSWORD>\",\n    \"login\": \"login\"\n    \n}\nmsg.headers = {\n    \"Host\": \"10.254.254.64\",\n    \"Connection\": \"keep-alive\",\n    \"Content-Length\": 39,\n    \"Cache-Control\": \"max-age=0\",\n    \"Origin\": \"http://<GATEWAYIP>\",\n    \"Upgrade-Insecure-Requests\": 1,\n    \"Content-Type\": \"application/x-www-form-urlencoded\",\n    \"User-Agent\": \"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36\",\n    \"Accept\": \"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8\",\n    \"Referer\": \"http://10.254.254.64/0/up/\",\n    \"Accept-Encoding\": \"gzip, deflate\",\n    \"Accept-Language\": \"en-US,en;q=0.8\",\n\n}\nreturn msg;",
	"outputs": 1,
	"noerr": 0,
	"x": 550,
	"y": 180,
	"wires": [["6d0bcc10.8e6c04"]]
},
{
	"id": "4c871882.ebc958",
	"type": "debug",
	"z": "c0559cc8.1dad9",
	"name": "connestb",
	"active": true,
	"console": "false",
	"complete": "payload",
	"x": 680,
	"y": 400,
	"wires": []
},
{
	"id": "e99e6078.54aeb",
	"type": "debug",
	"z": "c0559cc8.1dad9",
	"name": "nointernet",
	"active": true,
	"console": "false",
	"complete": "payload",
	"x": 220,
	"y": 340,
	"wires": []
},
{
	"id": "539dae3e.d61f1",
	"type": "function",
	"z": "c0559cc8.1dad9",
	"name": "checkifsuccess",
	"func": "response = msg.payload;\nif(response.includes(\"Your Internet connection is configured properly.\")){\n    msg.payload = \"connected\";\n}\nelse {\n    msg.payload = \"failed\";\n}\nreturn msg;",
	"outputs": 1,
	"noerr": 0,
	"x": 480,
	"y": 400,
	"wires": [["4c871882.ebc958",
	"3a0e9598.c7eefa"]]
},
{
	"id": "e8bac9ec.d09928",
	"type": "mqtt-broker",
	"z": "",
	"broker": "localhost",
	"port": "1883",
	"clientid": "",
	"usetls": false,
	"compatmode": true,
	"keepalive": "60",
	"cleansession": true,
	"willTopic": "",
	"willQos": "0",
	"willPayload": "",
	"birthTopic": "",
	"birthQos": "0",
	"birthPayload": ""
}]