Amazon.EC2.AmazonEC2Client.DescribeSecurityGroups C# (CSharp) Method

        internal DescribeSecurityGroupsResponse DescribeSecurityGroups()
        {
            return DescribeSecurityGroups(new DescribeSecurityGroupsRequest());
        }
        internal DescribeSecurityGroupsResponse DescribeSecurityGroups(DescribeSecurityGroupsRequest request)

        private static void ManageSecurityGroups()
        {
            IAmazonEC2 ec2        = new Amazon.EC2.AmazonEC2Client();
            var        sgResponse = ec2.DescribeSecurityGroups();

            string        ipRange = "22.22.22.22/0";
            List <string> ranges  = new List <string>()
            {
                ipRange
            };

            var ipPermission = new IpPermission();

            ipPermission.IpProtocol = "tcp";
            ipPermission.FromPort   = 3333;
            ipPermission.ToPort     = 3333;
            ipPermission.IpRanges   = ranges;

            var ingressRequest = new AuthorizeSecurityGroupIngressRequest();

            ingressRequest.IpPermissions.Add(ipPermission);
            var revokeRequest = new RevokeSecurityGroupIngressRequest();

            revokeRequest.IpPermissions.Add(ipPermission);
            foreach (var sg in sgResponse.SecurityGroups)
            {
                try
                {
                    if (new Random().Next(2) == 1)
                    {
                        ingressRequest.GroupId = sg.GroupId;
                        var ingressResponse = ec2.AuthorizeSecurityGroupIngress(ingressRequest);
                    }
                    else
                    {
                        revokeRequest.GroupId = sg.GroupId;
                        ec2.RevokeSecurityGroupIngress(revokeRequest);
                    }
                    //Console.WriteLine("New RDP rule for: " + ipRange);
                }
                catch (AmazonEC2Exception ex)
                {
                    // Check the ErrorCode to see if the rule already exists.
                    if ("InvalidPermission.Duplicate" == ex.ErrorCode)
                    {
                        //Console.WriteLine("An RDP rule for: {0} already exists.", ipRange);
                    }
                    else
                    {
                        // The exception was thrown for another reason, so re-throw the exception.
                        //throw;
                    }
                }
            }
        }