Stephen

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• The Espruino Book "Making Things Smart" is out now!

  in News • 1 year, 2 months

  

  Waiting for mine to arrive from Amazon, 31st Aug :-)

• Espruino WiFi connect callback before connection established

  @Stephen started

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  @Gordon replied
• Espruino WiFi connect callback before connection established

  in Pico / Wifi / Original Espruino • 1 year, 5 months

  

  I have been doing some testing on net.connect and find it runs the callback before the connection is established (deliberately erroneous hostname and port in code). I can't then run a registered error event handler. This is counter to the documents that indicate that the callback is executed after the TCP connection is established. I would appreciate some validation that I am not doing anything wrong?

  There is also no way I can see to change the connect timeout, however if I use the AT commands I can catch the error.

  Output:

  **** STARTING ****
  WiFi Connected!
  ["AT+CIPSTART=0,\"TTCP\",\"weeso\",1888\­r\n"
  net client before callback {"type":0,"opt":{"host":"weeso","port":1­888},"sckt":1}
  net client callback {"type":0,"opt":{"host":"weeso","port":1­888},"sckt":1,"conn":true}
  net client disconnected {"type":0,"opt":{"host":"weeso","port":1­888},"conn":true} *** {"type":0,"opt":{"host":"weeso","port":1­888},"conn":true}
  net client disconnected {"type":0,"opt":{"host":"weeso","port":1­888},"conn":true} *** undefined
  net closed, had_error: false
  

  Code:

  var wifi = require("EspruinoWiFi");
  
  function onInit() {
    console.log("**** STARTING ****");
    wifi.connect(WIFI_NAME, WIFI_OPTIONS, function (err) {
      if (err) {
        console.log("WiFi Connection error: " + err);
        return;
      }
      console.log("WiFi Connected!");
      wifi.at.debug();
      var at = wifi.at;
      //at.cmd('AT+CIPSTART=0,"TCP","weeso",18­88\r\n', 10000, (cb) => {
      //  console.log('AT cb '+cb);
      //});
  
      var client = require("net").connect({host: "weeso", port: 1888}, function (skt) {
        console.log('net client callback ' + JSON.stringify(skt));
        //client.write('Hello');
        client.on('error', function (err) {
          console.log("net error ");
          console.log("Error: " + JSON.stringify(err));
        });
        client.on('data', function (data) {
          console.log("net > " + JSON.stringify(data));
        });
        client.on('connected', function(data) {
          console.log("net connect "+JSON.stringify(data));
        });
        client.on('timeout', function (data) {
          console.log("net timeout " + JSON.stringify(data));
        });
        client.on('close', function (data) {
          console.log("net closed, had_error: " + JSON.stringify(data));
        });
        client.on('end', function (err) {
          console.log('net client disconnected ' + JSON.stringify(skt) + ' *** ' + JSON.stringify(err));
        });
      });
      console.log('net client before callback ' + JSON.stringify(client));
  
      });
  }