Callback never received

[TheMSB]

I was trying to figure out why a certain part of my code seemingly never executed but it seems that a callback from the node-dbus API is never called.

The code in question: (bus.js : 289)

this.getInterface = function(path, objname, name, callback) {
       return this.getObject(path, objname, function(err, obj) {
           if (err) return callback(err);
           callback(null, obj.as(name));
       });
    };

I have tried debugging the node-dbus library use the node dbug command but have been unable to find the cause. (the execution seemingly steps over the callback and never executes.)

For reference my code:

function getWPA_Supplicant() {
    return new Promise(function(resolve, reject) {
        wpai = wpas.getInterface('/fi/w1/wpa_supplicant1'
            , 'fi.w1.wpa_supplicant1', function (err, iface) {
                //console.log(err, iface);
                if (err) {
                    return reject(new Error(err));
                }

                iface.on('PropertiesChanged', function(dict) {
                    console.log('interface properties have changed!');
                    console.log(dict + "\n");
                });

                iface.on('InterfaceAdded', function(path, dict) {
                    console.log('interface has been added!'+ "\n");
                });

                iface.on('InterfaceRemoved', function(path) {
                    console.log('interface has been removed!');
                    console.log(path + "\n");
                });
                //fulfill the promise by returning the wireless interface
                return resolve(iface);
            });
    });
}

//We promise to get the wireless interface that already exists
function getWirelessInterface(){
    return new Promise(function(resolve, reject) {
        console.log("entering promise");
        console.log(wpas);
        debugger;
        wlif = wpas.getInterface('fi/wi/wpa_supplicant1/Interfaces/1'
            , 'fi.w1.wpa_supplicant1.Interface', "testingInterface", function (err, iface2) {
                console.log(err, iface2);
            //TODO this never resolves
                debugger;
            if (err) {
                console.log("rejected error!");
                return reject(new Error(err));
            }
            console.log("after err step");
            iface2.on('ScanDone', function (result) {
                console.log("Scan is Done..");
                console.log(result);
            });

            iface2.on('NetworkAdded', function (path, properties) {
                console.log("NetworkAdded");
                console.log(path, properties);
            });

            iface2.on('NetworkRemoved', function (path) {
                console.log("NetworkRemoved");
                console.log(path);
            });

            iface2.on('PropertiesChanged', function (properties) {
                console.log("PropertiesChanged");
                console.log(properties);
            });
            console.log("we enter the resolve step");
            return resolve(iface2);
        });
    });
}

function setup(){

    if (fs.existsSync('/run/wpa_supplicant/wlan0')) {
        //clean the run directory of any old interface instances
        fs.unlinkSync('/run/wpa_supplicant/wlan0', (err) => {
            if (err) {
                throw new Error(err);
            }
            console.log("deleted /run/wpa_supplicant/wlan0");
    });
    }


    getWPA_Supplicant().then(function(iface) {
        console.log("returning connect");
        return connect(iface);

    }).then(function() {
        console.log("returning getwirelessInterface");
        var value = getWirelessInterface();
        console.log(value);
        return value;

    }).then(function () {
        debugger;
        console.log("after the getInterface");

    }).catch(console.error.bind(console));

function connect(iface2) {
    console.log("connect");
    return new Promise (function(resolve, reject) {
        var retface = iface2.CreateInterface([
            ['Ifname',
                ['s', 'wlan0']
            ],
            ['Driver',
                ['s', 'nl80211']
            ],
            ['ConfigFile',
                ['s', '/etc/wpa_supplicant/wpa_supplicant.conf']
            ]
        ], function (err, iface3){
            console.log(err, iface3);
            if (err) {
                return reject(new Error(err));
            }
            return resolve(retface);
        });
    });
}

[muka]

This happens to me too. The Introspect request never get completed

[YurySolovyov]

might be related: #117