首次提交：添加src文件夹代码

Cowain.Bake.Communication/Sokects/FTPClient.cs

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+using FluentFTP;
+
+namespace Cowain.Bake.Communication.Sokects
+{
+    //全部都是远程操作
+    public class FtpHelper
+    {
+        #region 属性与构造函数
+        public string IpAddr { get; set; } /// IP地址
+        public string RelatePath { get; set; } /// 相对路径
+        public int Port { get; set; }        /// 端口号
+        public string UserName { get; set; }  /// 用户名
+        public string Password { get; set; }  /// 密码
+        //https://blog.csdn.net/fengershishe/article/details/129140618
+        public FtpHelper()
+        {
+        }
+
+        public FtpHelper(string ipAddr, int port, string userName, string password, string relatePath = "")
+        {
+            this.IpAddr = ipAddr;
+            this.Port = port;
+            this.UserName = userName;
+            this.Password = password;
+            this.RelatePath = relatePath;
+        }
+
+        #endregion
+
+        #region 方法
+        public FtpListItem[] ListDir()
+        {
+            FtpListItem[] lists;
+            using (var ftpClient = new FtpClient(this.IpAddr, this.UserName, this.Password, this.Port))
+            {
+                ftpClient.Connect();  // 连接到FTP服务器
+                ftpClient.SetWorkingDirectory(this.RelatePath);
+                lists = ftpClient.GetListing();
+            }
+            return lists;
+        }
+
+        // 上传文件
+        public bool UpLoad(string src, string desc)
+        {
+            using (var ftpClient = new FtpClient(this.IpAddr, this.UserName, this.Password, this.Port))
+            {
+                ftpClient.Connect();
+                FtpStatus result = ftpClient.UploadFile(src, desc); // ("local/file.txt", "remote/file.txt");
+                ftpClient.Disconnect();
+                return FtpStatus.Success == result ? true : false;
+            }          
+        }
+       
+        ///创建目录(远程创建)
+        private bool CheckDirIsExists(string dir)
+        {
+            bool flag = false;
+            using (var ftpClient = new FtpClient(this.IpAddr, this.UserName, this.Password, this.Port))
+            {
+                ftpClient.Connect();
+                ftpClient.SetWorkingDirectory(this.RelatePath);
+                flag = ftpClient.DirectoryExists(dir);
+                if (!flag)
+                {
+                    flag = ftpClient.CreateDirectory(dir); //client.CreateDirectory("remote/directory");
+                }
+            }
+            return flag;
+        }
+
+        public void DeleteFile(string dir)
+        {
+            using (var ftpClient = new FtpClient(this.IpAddr, this.UserName, this.Password, this.Port))
+            {
+                ftpClient.Connect();
+                ftpClient.SetWorkingDirectory(this.RelatePath);
+                ftpClient.DeleteFile(dir);
+                ftpClient.Disconnect();
+            }
+        }
+
+        public bool DownloadFile(string localAddress, string remoteAddress)
+        {
+            using (var ftpClient = new FtpClient(this.IpAddr, this.UserName, this.Password, this.Port))
+            {
+                ftpClient.SetWorkingDirectory(this.RelatePath);
+                ftpClient.Connect();
+                if (ftpClient.DownloadFile(localAddress, remoteAddress) == FtpStatus.Success)
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
+        #endregion
+    }
+}