Sockets Error After Multiple HTTP Calls

Hi .Neil,

I have a pico connected to a ESP8266 development board and see the same memory leak problem you have found.

I added a couple of things and the leak seems to have disappeared completely (at least I think so - not really any clue of what a memory leak actually is!)

I have a 10uF electrolytic capacitor between Vcc and GND.

Also I removed the onInit() because I don't understand what that bit does?

var tries=0;

Serial2.setup(115200, { rx: A3, tx : A2 });
var wifi = require("ESP8266WiFi_0v25").connect(Serial2, function(err) {
  if (err) throw err;
  wifi.reset(function(err) {
    if (err) throw err;
    console.log("Connecting to WiFi");
    wifi.connect(WIFI_NAME, WIFI_PASS, function(err) {
      if (err) throw err;
      console.log("Connected");
      setInterval(function () {
        require("http").get("http://www.espruino.com", function(res) {
          console.log("Response: ",res);
          res.on('data', function(d) {
          });
        });
        console.log("Attempt #" + ++tries);
        console.log(process.memory());
      }, 15000);
    });
  });
});

It's been running a for a while now, here's the console log.

Attempt #121
{ "free": 4091, "usage": 1009, "total": 5100, "history": 583,
  "stackEndAddress": 536958448, "flash_start": 134217728, "flash_binary_end": 378024, "flash_code_start": 134234112, "flash_length": 393216 }
Response:  httpCRs {
  "headers": {
    "Date": "Sat, 17 Dec 2016 13:46:41 GMT",
    "Server": "Apache/2.4.18 (Ubuntu)",
    "Set-Cookie": "PHPSESSID=u97rcqv8b6e38cjertl64c6ti6; path=/",
    "Expires": "Thu, 19 Nov 1981 08:52:00 GMT",
    "Cache-Control": "no-store, no-cache, must-revalidate",
    "Pragma": "no-cache",
    "Vary": "Accept-Encoding",
    "Connection": "close",
    "Content-Type": "text/html; charset=UTF-8"
   },
  "httpVersion": "1.1",
  "statusCode": "200",
  "statusMessage": "OK"
 }

Does this maybe help to pin down the leak?