Node.js/Express/Redis wait for only one message from channel

Question

I have a redis connection subscribed to a channel with a get request

app.get('/wait', function (req, res) {
    redisSub.on('message', function(channel, msg) {
        console.log('rcv: ' + msg);
    });
});

And later with a different get request I send the message

app.get('/done/:msg', function (req, res) {
    redisPub.publish('message', req.params.msg);
});

The problem is that I want that request to stop listening for messages once it gets it. Or else when I go through again it will still be listening and will get the next message again. I'm not sure how to remove the listener from itself once the message is received.

Dan D. · Accepted Answer · 2012-10-15 05:44:54Z

1

Not tested but this should work,

var callback = function(channel, msg) {
    console.log('rcv: ' + msg);
    redisSub.removeListener('message', callback); 
}
redisSub.on('message', callback);

edited Oct 15, 2012 at 5:44

Dan D.

75k15 gold badges111 silver badges129 bronze badges

answered Oct 15, 2012 at 5:36

vinayr

11.3k3 gold badges49 silver badges44 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Node.js/Express/Redis wait for only one message from channel

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related