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How can I determine the IP address of a given request from within a controller? For example (in express):
app.post('/get/ip/address', function (req, res) { // need access to IP address here }) 
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publicIp. v4(). then(ip => { console. log("your public ip address", ip); });
An IP Address node is created in the datastore when a host, network device, printer, or SNMP managed device is scanned successfully. The new IP Address node will only be created if one with the same key does not already exist as a child of that node.
In your request object there is a property called socket, which is a net.Socket object. The net.Socket object has a property remoteAddress, therefore you should be able to get the IP with this call:
request.socket.remoteAddress (if your node version is below 13, use the deprecated now request.connection.remoteAddress)
EDIT
As @juand points out in the comments, the correct method to get the remote IP, if the server is behind a proxy, is request.headers['x-forwarded-for']
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