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