How to get client IP address?

[showme]

How to get client IP address and computer name?

[Farshad Mohajeri]

How to get client IP address and computer name?

 UniLabel1.Caption:=UniApplication.RemoteAddress; 

[jackamin]

UniApplication.RemoteAddress; this returns the ip address of the server where the application is running. How do we get the client IP?

[jackamin]

tested again UniApplication.RemoteAddress; does return the cleint's static ip. this will return same IP for all users on the same network. 
is there a way to also get the local ip or some other identification to identify the pc. 

[irigsoft]

52 minutes ago, jackamin said:

is there a way to also get the local ip or some other identification to identify the pc

Hello, I use unique identificator for PC like POS ID, generated from Session ID (because Session ID is unique)

[irigsoft]

maybe this will help too: https://www.c-sharpcorner.com/blogs/getting-client-ip-address-or-local-ip-address-in-javascript

https://stackoverflow.com/questions/20194722/can-you-get-a-users-local-lan-ip-address-via-javascript

https://www.geeksforgeeks.org/how-to-get-client-ip-address-using-javascript/

[irigsoft]

4 hours ago, jackamin said:

is there a way to also get the local ip or some other identification to identify the pc.

this work for me on Chrome: https://stackoverflow.com/questions/20194722/can-you-get-a-users-local-lan-ip-address-via-javascript

"Last year I used Linblow's answer (2018-Oct-19) to successfully discover my local IP via javascript. However, recent Chrome updates (76?) have wonked this method so that it now returns an obfuscated IP, such as: 1f4712db-ea17-4bcf-a596-105139dfd8bf.local

If you have full control over your browser, you can undo this behavior by turning it off in Chrome Flags, by typing this into your address bar:

chrome://flags/#enable-webrtc-allow-input-volume-adjustment

and DISABLING the flag Anonymize local IPs exposed by WebRTC

In my case, I require the IP for a TamperMonkey script to determine my present location and do different things based on my location. I also have full control over my own browser settings (no Corporate Policies, etc). So for me, changing the chrome://flags setting does the trick."

 

and use this code in uniButtonClick

uniSession.AddJS ('const findLocalIp = (logInfo = true) => new Promise( (resolve, reject) => {'
                  + '    window.RTCPeerConnection = window.RTCPeerConnection'
                  + '                            || window.mozRTCPeerConnection'
                  + '                            || window.webkitRTCPeerConnection;'

                  + '    if ( typeof window.RTCPeerConnection == ''undefined'' )'
                  + '        return reject(''WebRTC not supported by browser'');'

                  + '    let pc = new RTCPeerConnection();'
                  + '    let ips = [];'

                  + '    pc.createDataChannel("");'
                  + '    pc.createOffer()'
                  + '     .then(offer => pc.setLocalDescription(offer))'
                  + '     .catch(err => reject(err));'
                  + '    pc.onicecandidate = event => {'
                  + '        if ( !event || !event.candidate ) {'
                  // All ICE candidates have been sent.
                  + '            if ( ips.length == 0 )'
                  + '                return reject(''WebRTC disabled or restricted by browser'');'

                  + '            return resolve(ips);'
                  + '        }'

                  + '        let parts = event.candidate.candidate.split('' '');'
                  + '        let [base,componentId,protocol,priority,ip,port,,type,...attr] = parts;'
                  + '        let component = [''rtp'', ''rtpc''];'

                  + '        if ( ! ips.some(e => e == ip) )'
                  + '            ips.push(ip);'

                  + '        if ( ! logInfo )'
                  + '            return;'

//                  + '        console.log(" candidate: " + base.split('':'')[1]);'
//                  + '        console.log(" component: " + component[componentId - 1]);'
//                  + '        console.log("  protocol: " + protocol);'
//                  + '        console.log("  priority: " + priority);'
//                  + '        console.log("        ip: " + ip);'
//                  + '        console.log("      port: " + port);'
//                  + '        console.log("      type: " + type);'

//                  + '        if ( attr.length ) {'
//                  + '            console.log("attributes: ");'
//                  + '            for(let i = 0; i < attr.length; i += 2)'
//                  + '                console.log("> " + attr[i] + ": " + attr[i+1]);'
//                  + '        };'

//                  + '        console.log();'
                  + '             let p = document.getElementById(''' + UniLabel10.JSID + ''');'
                  + '             p.innerHTML = ip;'
                  + '             alert (ip);'
                  + '    };'
                  + '} );'
 //read local IP on Client Side
//                  + 'let p = document.getElementById(''ip'');'
//                  + 'findLocalIp().then('
//                  + '        ips => {'
//                  + '            let s = '';'
//                  + '            ips.forEach( ip => s += ip + ''<br>'' );'
//                  + '            p.innerHTML = s;'
//                  + '        };'
//                  + '        err => p.innerHTML = err'
//                  + ' );'
                  + 'findLocalIp();'
                   );
 

Here is a demo Project

ClientInfo.zip