Check if internet working FLOW

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        "name": "Ping response handler",
        "func": "// Description: This function is for use with Home Assistant and Node-Red. It will \n// turn on a specified light and set it to a specified color in the event of an \n// Internet outage. Upon re-connecting, the function will return the light to its \n// original state. Note that in order to operate properly, the specified light\n// must be locally controlled and not cloud controlled.\n\n// Input for this function is a Ping node. Tested with a target identified, automatic \n// protocol, timed mode, and an interval of 30 seconds. \n\n// For testing purposes, the target IP was set as a WiFi light bulb. To simulate an \n// outage, power was turned off to the light. When power was turned back on, the \n// re-connect portion would excute.\n\n// This function node requires three outputs. These outputs should allow for \n// expanded functionality outside the scope of this function node.\n// -the first output is for the failure path; payload = number of ping failures\n// -the second output is for the operational path; payload = ping response time\n// -the third output connects to an empty call service node for the notification.\n// payload sends the necessary variables in the event of an outage and re-connection.\n\n// Bug: function will sometimes throw a ReferenceError: local is not defined\n// Reason: not sure. seems random. mostly noticed when forcing scripts to restart.\n// Fix: unknown. tried a couple different ways to define local and they all did\n// the same thing. \n\n// Bug: During an outage, if the light's state or attributes are changed, the\n// function will still return it back to how it was before the outage was reported.\n// Reason: The light's state and attributes are stored prior to an outage. It does \n// not check if the state has changed during the outage.\n// Fix: None yet. Maybe checking during the outage to see if the current \n// state/attributes matches the outage state/attributes?\n\n// Note: The function does have a variable for the time of failure but it is not \n// used for anything yet. Maybe it will get added to the HA log in the future.\n\n//20211009 - Added node.status message\n\n// This is the entity that will be used for notification of an outage and \n// setting previous state.\nvar entity = \"light.hallway\";\n//This is the color the light will change to during an outage.\nvar rgb_out = [255,0,0];\n// This sets how many consecutive ping failures can occur before triggering the \n// outage notification.\nvar max_allowed_ping_failures = 3;\n\n// This function stores the current state of the entity (on/off). If the entity is \n// on, it will also stores the entity's attributes. These values will be used when \n// returning the entity to its previous state once the internet has re-connected.\nfunction set_entity_previous() {\n    local.previous_state = ha.state;\n    if (local.previous_state === \"on\") //Store entity's attributes if state is on\n    {\n        local.previous_attributes = ha.attributes;\n    } else {\n        local.previous_attributes = null\n    }\n}\n\n// Initialize variables\nconst ha = global.get('homeassistant').homeAssistant.states[entity]\nconst messages = new Array(node.outputCount) // Create an array same length as there are outputs\nconst msg0 = {payload:\"\", topic:\"MSG0\"};\nconst msg1 = {payload:\"\", topic:\"MSG1\"};\nconst msg2 = {payload:\"\", data:\"\", topic:\"MSG2\"};\n\n// Establish variables if they do not exist and set default value\nif (typeof local !== undefined) { local = global.get('data') || {}; }\nif (local.ping_failure_count===undefined) { local.ping_failure_count = 0; }\nif (local.ping_failure_time===undefined) { local.ping_failure_time = 0; }\n\n// Establish standard payload to be passed to service call node\nmsg2.payload = {domain: \"light\", service: \"turn_on\",\n    data: {\n        entity_id: entity, }\n    };\n\n// The Ping node will return false if it does not receive a response.\n// Otherwise, it will return a time in ms.\nif (msg.payload === false) // Ping response failed\n{\n    node.status({fill:\"red\",shape:\"ring\",text:\"disconnected\"});\n    local.ping_failure_count++;\n    \n    // Has max_allowed_ping_failures occured? Indicate outage.\n    if (local.ping_failure_count === max_allowed_ping_failures) \n    {\n        if (local.previous_state === \"on\" || local.previous_state === \"off\") { set_entity_previous(); }\n        local.ping_failure_time = Date.now(); //Creates timestamp variable in seconds; not used yet\n        msg2.payload.data.rgb_color = rgb_out;\n        messages[2] = msg2; // Send service call payload to output\n    }\n    \n    msg0.payload = local.ping_failure_count; \n    global.set('data',local);\n    messages[0] = msg0; // Send ping failure count to output\n\n} else { // Ping response good\n    node.status({fill:\"green\",shape:\"dot\",text:\"connected\"});\n    // Has the internet re-connected following an outage?\n    if (local.ping_failure_count >= max_allowed_ping_failures) \n    {\n        //Return light to its previous state \n        if (local.previous_state === \"on\")\n        {\n            msg2.payload.data.brightness = local.previous_attributes.brightness;\n            // Was light in color mode or RGB mode since both cannot be passed in the same payload? \n            if (local.previous_attributes.rgb_color.toString() === '255,255,255') {\n                msg2.payload.data.color_temp = local.previous_attributes.color_temp;\n            } else {\n                msg2.payload.data.rgb_color = local.previous_attributes.rgb_color;\n            }    \n        } else { // Light's previous state was off\n            msg2.payload.service = \"turn_off\"; \n        }\n        messages[2] = msg2;  // Send service call payload to output\n    }\n    \n    local.ping_failure_count = 0; // Reset/maintain ping failure count to zero\n    set_entity_previous(); // Store entity's current state\n    msg1.payload = msg.payload;\n    global.set('data',local);\n    messages[1] = msg1;  // Send response time to output\n}\nreturn messages;\n",
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        "noerr": 0,
        "initialize": "",
        "finalize": "// Code added here will be run when the\n// node is being stopped or re-deployed.\nlocal.ping_failure_count=0;",
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