HTTP module orphaning requests.

[espruino-discuss]

Posted at 2020-09-28 by Ken

Has anyone experienced an issue where your HTTP request is never made? The project I'm working on requests some JSON data on a regular basis (60s) from a server. It works the majority of the time but after it runs for a while, it starts to have issues with orphaned requests. I've run this same code against several different servers, hosts, files, etc... both local and remote and still the same issue.

Below I have a simple test and if you let this code run for a while, it will eventually start to trip up. I have it set to call every 5 seconds for this test but Increasing the time between calls does not help. I've had it 20, 30 & 60 seconds and still the same issue.

Beyond it's just my network, does anyone have any thoughts? Thank you!

let timer = null;
let WIFI = require("Wifi");

function makeRequest(){
  console.log("GET");
  require("http").request({
    "host":"www.espruino.com",
    "path":"/",
    "method":"GET",
  }, function(res) {
    res.on('data', function(data) { });
    res.on('close', function(data) { console.log("CLOSED", res.statusCode); });
  }).end();
}

WIFI.connect(SSID, { password : PWD }, function(err) {
    if (err) {
        console.log("WIFI ERR",err);
        return;
    }
    console.log("Connected to wifi.");
    makeRequest();        
    
    timer=setInterval(()=>{
      makeRequest();
    },5000);
    
});

[espruino-discuss]

Posted at 2020-09-29 by @gfwilliams

Hi - did you close this because you found the answer?

At some point I think on networks - especially WiFi - there will be the occasional failure which you'll need to be able to handle, but there shouldn't be a lot of them.

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Posted at 2020-09-29 by Ken

Sorry I was actually looking to delete the post. Right after I posted, I realized it was a stupid question and I didn't want to waste anyones time with it. :)

It's still happening and but I can live with it and like you said just work around the failures when they happen.

Sorry about the post.

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Posted at 2020-09-30 by @gfwilliams

No problem - if there is an issue that's reproducable then there might be something that can be done about it, so it's always good to know :)