fix: Made changes as per the comments

pkg/s3utils/utils.go

@@ -31,7 +31,6 @@ import (
 
 // Sentinel URL is the default url value which is invalid.
 var sentinelURL = url.URL{}
-var host string
 
 // IsValidDomain validates if input string is a valid domain name.
 func IsValidDomain(host string) bool {
@@ -224,11 +223,10 @@ func IsAmazonPrivateLinkEndpoint(endpointURL url.URL) bool {
 
 // IsGoogleEndpoint - Match if it is exactly Google cloud storage endpoint.
 func IsGoogleEndpoint(endpointURL url.URL) bool {
-	host := HasPortNumber(endpointURL)
 	if endpointURL == sentinelURL {
 		return false
 	}
-	return host == "storage.googleapis.com"
+	return endpointURL.Hostname() == "storage.googleapis.com"
 }
 
 // Expects ascii encoded strings - from output of urlEncodePath
@@ -410,14 +408,4 @@ func CheckValidObjectName(objectName string) error {
 		return errors.New("Object name cannot be empty")
 	}
 	return CheckValidObjectNamePrefix(objectName)
-}
-
-//checks for port number
-func HasPortNumber(endpointURL url.URL) string {
-	if colonIndex := strings.LastIndex(endpointURL.Host, ":"); colonIndex != -1 {
-		host = endpointURL.Host[:colonIndex]
-	} else {
-		host = endpointURL.Host
-	}
-	return host
-}
+}