leaflet.js

      var renderIpData = function(events) {
        if (events) {
          for (var i = 0; i < events.length; i += 1) {
            var current = events[i]

            var slat = current.src_geoip.latitude;
            var slong = current.src_geoip.longitude;

            var dlat = current.dst_geoip.latitude;
            var dlong = current.dst_geoip.longitude;

            var pointA = new L.LatLng(slat, slong);
            var pointB = new L.LatLng(dlat, dlong);
            var pointList = [pointA, pointB];

            var polyline = L.polyline(pointList, {
              color: 'red',
              weight: 2,
              opacity: 0.5,
              smoothFactor: 1
            });

            polyline.bindPopup(current.ip_src + " <=> " + current.ip_dst);
            map.addLayer(polyline);

            polyline.on('mouseover', function(e) {
              console.log(this)
              this.setStyle({
                color: "green",
                opacity: 1
              });
              this.bringToFront();
            });

            polyline.on('mouseout', function(e) {
              this.setStyle({
                color: 'red',
                weight: 2,
                opacity: 0.5,
                smoothFactor: 1
              });
              this.bringToBack();
            });

            if (plotList.indexOf(current.ip_src) < 1) {
              var m = L.marker([slat, slong], {
                title: current.ip_src
              }).addTo(map)
              .bindPopup('A pretty CSS3 popup. <br> Easily customizable.');

              m.on('click', function(e) {
                console.log(this);
                polyline.setStyle({
                  color: "green"
                });
              });
            };

            if (plotList.indexOf(current.ip_dst) < 1) {
              var m = L.marker([dlat, dlong], {
                title: current.ip_dst
              }).addTo(map)
              .bindPopup('A pretty CSS3 popup. <br> Easily customizable.');
              m.on('click', function(e) {
                console.log(this);
                polyline.setStyle({
                  color: "green"
                });
              });
            };

            
            plotList.push(current.ip_src);
            plotList.push(current.ip_dst);
          } // loop
        };
      }; // render ip data