MongoDB.Driver.MongoConnectionStringBuilder.GetServersString C# (CSharp) Method

        private string GetServersString(IEnumerable<MongoServerAddress> servers)
        {
            var sb = new StringBuilder();
            foreach (var server in servers)
            {
                if (sb.Length > 0) { sb.Append(","); }
                if (server.Port == 27017)
                {
                    sb.Append(server.Host);
                }
                else
                {
                    sb.AppendFormat("{0}:{1}", server.Host, server.Port);
                }
            }
            return sb.ToString();
        }