package utils import ( "crypto/md5" //nolint "encoding/hex" "net" "net/http" "strings" log "github.com/sirupsen/logrus" ) // GenerateClientIDFromRequest generates a client id from the provided request. func GenerateClientIDFromRequest(req *http.Request) string { ipAddress := GetIPAddressFromRequest(req) ipAddressComponents := strings.Split(ipAddress, ":") ipAddressComponents[len(ipAddressComponents)-1] = "" clientID := strings.Join(ipAddressComponents, ":") + req.UserAgent() // Create a MD5 hash of this ip + useragent b := md5.Sum([]byte(clientID)) // nolint return hex.EncodeToString(b[:]) } // GetIPAddressFromRequest returns the IP address from a http request. func GetIPAddressFromRequest(req *http.Request) string { ipAddressString := req.RemoteAddr xForwardedFor := req.Header.Get("X-FORWARDED-FOR") if xForwardedFor != "" { return xForwardedFor } ip, _, err := net.SplitHostPort(ipAddressString) if err != nil { log.Errorln(err) return "" } return ip }