分享用於操作FTP的客戶端C#類。本站提示廣大學習愛好者：（分享用於操作FTP的客戶端C#類）文章只能為提供參考，不一定能成為您想要的結果。以下是分享用於操作FTP的客戶端C#類正文
這是一個用於操作FTP的客戶端C#類，類曾經封裝好了各類經常使用的Ftp操作辦法，挪用異常簡略，你不須要關懷ftp銜接和操作的細節，只需挪用這個類裡的相干辦法便可以了。
using System;
using System.Net;
using System.IO;
using System.Text;
using System.Net.Sockets;
using System.Threading;
namespace DotNet.Utilities
{
public class FTPClient
{
public static object obj = new object();
#region 結構函數
/// <summary>
/// 缺省結構函數
/// </summary>
public FTPClient()
{
strRemoteHost = "";
strRemotePath = "";
strRemoteUser = "";
strRemotePass = "";
strRemotePort = 21;
bConnected = false;
}
/// <summary>
/// 結構函數
/// </summary>
public FTPClient(string remoteHost, string remotePath, string remoteUser, string remotePass, int remotePort)
{
strRemoteHost = remoteHost;
strRemotePath = remotePath;
strRemoteUser = remoteUser;
strRemotePass = remotePass;
strRemotePort = remotePort;
Connect();
}
#endregion
#region 字段
private int strRemotePort;
private Boolean bConnected;
private string strRemoteHost;
private string strRemotePass;
private string strRemoteUser;
private string strRemotePath;
/// <summary>
/// 辦事器前往的應對信息(包括應對碼)
/// </summary>
private string strMsg;
/// <summary>
/// 辦事器前往的應對信息(包括應對碼)
/// </summary>
private string strReply;
/// <summary>
/// 辦事器前往的應對碼
/// </summary>
private int iReplyCode;
/// <summary>
/// 停止掌握銜接的socket
/// </summary>
private Socket socketControl;
/// <summary>
/// 傳輸形式
/// </summary>
private TransferType trType;
/// <summary>
/// 吸收和發送數據的緩沖區
/// </summary>
private static int BLOCK_SIZE = 512;
/// <summary>
/// 編碼方法
/// </summary>
Encoding ASCII = Encoding.ASCII;
/// <summary>
/// 字節數組
/// </summary>
Byte[] buffer = new Byte[BLOCK_SIZE];
#endregion
#region 屬性
/// <summary>
/// FTP辦事器IP地址
/// </summary>
public string RemoteHost
{
get
{
return strRemoteHost;
}
set
{
strRemoteHost = value;
}
}
/// <summary>
/// FTP辦事器端口
/// </summary>
public int RemotePort
{
get
{
return strRemotePort;
}
set
{
strRemotePort = value;
}
}
/// <summary>
/// 以後辦事器目次
/// </summary>
public string RemotePath
{
get
{
return strRemotePath;
}
set
{
strRemotePath = value;
}
}
/// <summary>
/// 登錄用戶賬號
/// </summary>
public string RemoteUser
{
set
{
strRemoteUser = value;
}
}
/// <summary>
/// 用戶登錄暗碼
/// </summary>
public string RemotePass
{
set
{
strRemotePass = value;
}
}
/// <summary>
/// 能否登錄
/// </summary>
public bool Connected
{
get
{
return bConnected;
}
}
#endregion
#region 鏈接
/// <summary>
/// 樹立銜接
/// </summary>
public void Connect()
{
lock (obj)
{
socketControl = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ep = new IPEndPoint(IPAddress.Parse(RemoteHost), strRemotePort);
try
{
socketControl.Connect(ep);
}
catch (Exception)
{
throw new IOException("不克不及銜接ftp辦事器");
}
}
ReadReply();
if (iReplyCode != 220)
{
DisConnect();
throw new IOException(strReply.Substring(4));
}
SendCommand("USER " + strRemoteUser);
if (!(iReplyCode == 331 || iReplyCode == 230))
{
CloseSocketConnect();
throw new IOException(strReply.Substring(4));
}
if (iReplyCode != 230)
{
SendCommand("PASS " + strRemotePass);
if (!(iReplyCode == 230 || iReplyCode == 202))
{
CloseSocketConnect();
throw new IOException(strReply.Substring(4));
}
}
bConnected = true;
ChDir(strRemotePath);
}
/// <summary>
/// 封閉銜接
/// </summary>
public void DisConnect()
{
if (socketControl != null)
{
SendCommand("QUIT");
}
CloseSocketConnect();
}
#endregion
#region 傳輸形式
/// <summary>
/// 傳輸形式:二進制類型、ASCII類型
/// </summary>
public enum TransferType { Binary, ASCII };
/// <summary>
/// 設置傳輸形式
/// </summary>
/// <param name="ttType">傳輸形式</param>
public void SetTransferType(TransferType ttType)
{
if (ttType == TransferType.Binary)
{
SendCommand("TYPE I");//binary類型傳輸
}
else
{
SendCommand("TYPE A");//ASCII類型傳輸
}
if (iReplyCode != 200)
{
throw new IOException(strReply.Substring(4));
}
else
{
trType = ttType;
}
}
/// <summary>
/// 取得傳輸形式
/// </summary>
/// <returns>傳輸形式</returns>
public TransferType GetTransferType()
{
return trType;
}
#endregion
#region 文件操作
/// <summary>
/// 取得文件列表
/// </summary>
/// <param name="strMask">文件名的婚配字符串</param>
public string[] Dir(string strMask)
{
if (!bConnected)
{
Connect();
}
Socket socketData = CreateDataSocket();
SendCommand("NLST " + strMask);
if (!(iReplyCode == 150 || iReplyCode == 125 || iReplyCode == 226))
{
throw new IOException(strReply.Substring(4));
}
strMsg = "";
Thread.Sleep(2000);
while (true)
{
int iBytes = socketData.Receive(buffer, buffer.Length, 0);
strMsg += ASCII.GetString(buffer, 0, iBytes);
if (iBytes < buffer.Length)
{
break;
}
}
char[] seperator = { '\n' };
string[] strsFileList = strMsg.Split(seperator);
socketData.Close(); //數據socket封閉時也會有前往碼
if (iReplyCode != 226)
{
ReadReply();
if (iReplyCode != 226)
{
throw new IOException(strReply.Substring(4));
}
}
return strsFileList;
}
public void newPutByGuid(string strFileName, string strGuid)
{
if (!bConnected)
{
Connect();
}
string str = strFileName.Substring(0, strFileName.LastIndexOf("\\"));
string strTypeName = strFileName.Substring(strFileName.LastIndexOf("."));
strGuid = str + "\\" + strGuid;
Socket socketData = CreateDataSocket();
SendCommand("STOR " + Path.GetFileName(strGuid));
if (!(iReplyCode == 125 || iReplyCode == 150))
{
throw new IOException(strReply.Substring(4));
}
FileStream input = new FileStream(strGuid, FileMode.Open);
input.Flush();
int iBytes = 0;
while ((iBytes = input.Read(buffer, 0, buffer.Length)) > 0)
{
socketData.Send(buffer, iBytes, 0);
}
input.Close();
if (socketData.Connected)
{
socketData.Close();
}
if (!(iReplyCode == 226 || iReplyCode == 250))
{
ReadReply();
if (!(iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
}
}
/// <summary>
/// 獲得文件年夜小
/// </summary>
/// <param name="strFileName">文件名</param>
/// <returns>文件年夜小</returns>
public long GetFileSize(string strFileName)
{
if (!bConnected)
{
Connect();
}
SendCommand("SIZE " + Path.GetFileName(strFileName));
long lSize = 0;
if (iReplyCode == 213)
{
lSize = Int64.Parse(strReply.Substring(4));
}
else
{
throw new IOException(strReply.Substring(4));
}
return lSize;
}
/// <summary>
/// 獲得文件信息
/// </summary>
/// <param name="strFileName">文件名</param>
/// <returns>文件年夜小</returns>
public string GetFileInfo(string strFileName)
{
if (!bConnected)
{
Connect();
}
Socket socketData = CreateDataSocket();
SendCommand("LIST " + strFileName);
string strResult = "";
if (!(iReplyCode == 150 || iReplyCode == 125
|| iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
byte[] b = new byte[512];
MemoryStream ms = new MemoryStream();
while (true)
{
int iBytes = socketData.Receive(b, b.Length, 0);
ms.Write(b, 0, iBytes);
if (iBytes <= 0)
{
break;
}
}
byte[] bt = ms.GetBuffer();
strResult = System.Text.Encoding.ASCII.GetString(bt);
ms.Close();
return strResult;
}
/// <summary>
/// 刪除
/// </summary>
/// <param name="strFileName">待刪除文件名</param>
public void Delete(string strFileName)
{
if (!bConnected)
{
Connect();
}
SendCommand("DELE " + strFileName);
if (iReplyCode != 250)
{
throw new IOException(strReply.Substring(4));
}
}
/// <summary>
/// 重定名(假如新文件名與已有文件重名,將籠罩已有文件)
/// </summary>
/// <param name="strOldFileName">舊文件名</param>
/// <param name="strNewFileName">新文件名</param>
public void Rename(string strOldFileName, string strNewFileName)
{
if (!bConnected)
{
Connect();
}
SendCommand("RNFR " + strOldFileName);
if (iReplyCode != 350)
{
throw new IOException(strReply.Substring(4));
}
// 假如新文件名與原有文件重名,將籠罩原有文件
SendCommand("RNTO " + strNewFileName);
if (iReplyCode != 250)
{
throw new IOException(strReply.Substring(4));
}
}
#endregion
#region 上傳和下載
/// <summary>
/// 下載一批文件
/// </summary>
/// <param name="strFileNameMask">文件名的婚配字符串</param>
/// <param name="strFolder">當地目次(不得以\停止)</param>
public void Get(string strFileNameMask, string strFolder)
{
if (!bConnected)
{
Connect();
}
string[] strFiles = Dir(strFileNameMask);
foreach (string strFile in strFiles)
{
if (!strFile.Equals(""))//普通來講strFiles的最初一個元素能夠是空字符串
{
Get(strFile, strFolder, strFile);
}
}
}
/// <summary>
/// 下載一個文件
/// </summary>
/// <param name="strRemoteFileName">要下載的文件名</param>
/// <param name="strFolder">當地目次(不得以\停止)</param>
/// <param name="strLocalFileName">保留在當地時的文件名</param>
public void Get(string strRemoteFileName, string strFolder, string strLocalFileName)
{
Socket socketData = CreateDataSocket();
try
{
if (!bConnected)
{
Connect();
}
SetTransferType(TransferType.Binary);
if (strLocalFileName.Equals(""))
{
strLocalFileName = strRemoteFileName;
}
SendCommand("RETR " + strRemoteFileName);
if (!(iReplyCode == 150 || iReplyCode == 125 || iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
FileStream output = new FileStream(strFolder + "\\" + strLocalFileName, FileMode.Create);
while (true)
{
int iBytes = socketData.Receive(buffer, buffer.Length, 0);
output.Write(buffer, 0, iBytes);
if (iBytes <= 0)
{
break;
}
}
output.Close();
if (socketData.Connected)
{
socketData.Close();
}
if (!(iReplyCode == 226 || iReplyCode == 250))
{
ReadReply();
if (!(iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
}
}
catch
{
socketData.Close();
socketData = null;
socketControl.Close();
bConnected = false;
socketControl = null;
}
}
/// <summary>
/// 下載一個文件
/// </summary>
/// <param name="strRemoteFileName">要下載的文件名</param>
/// <param name="strFolder">當地目次(不得以\停止)</param>
/// <param name="strLocalFileName">保留在當地時的文件名</param>
public void GetNoBinary(string strRemoteFileName, string strFolder, string strLocalFileName)
{
if (!bConnected)
{
Connect();
}
if (strLocalFileName.Equals(""))
{
strLocalFileName = strRemoteFileName;
}
Socket socketData = CreateDataSocket();
SendCommand("RETR " + strRemoteFileName);
if (!(iReplyCode == 150 || iReplyCode == 125 || iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
FileStream output = new FileStream(strFolder + "\\" + strLocalFileName, FileMode.Create);
while (true)
{
int iBytes = socketData.Receive(buffer, buffer.Length, 0);
output.Write(buffer, 0, iBytes);
if (iBytes <= 0)
{
break;
}
}
output.Close();
if (socketData.Connected)
{
socketData.Close();
}
if (!(iReplyCode == 226 || iReplyCode == 250))
{
ReadReply();
if (!(iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
}
}
/// <summary>
/// 上傳一批文件
/// </summary>
/// <param name="strFolder">當地目次(不得以\停止)</param>
/// <param name="strFileNameMask">文件名婚配字符(可以包括*和?)</param>
public void Put(string strFolder, string strFileNameMask)
{
string[] strFiles = Directory.GetFiles(strFolder, strFileNameMask);
foreach (string strFile in strFiles)
{
Put(strFile);
}
}
/// <summary>
/// 上傳一個文件
/// </summary>
/// <param name="strFileName">當地文件名</param>
public void Put(string strFileName)
{
if (!bConnected)
{
Connect();
}
Socket socketData = CreateDataSocket();
if (Path.GetExtension(strFileName) == "")
SendCommand("STOR " + Path.GetFileNameWithoutExtension(strFileName));
else
SendCommand("STOR " + Path.GetFileName(strFileName));
if (!(iReplyCode == 125 || iReplyCode == 150))
{
throw new IOException(strReply.Substring(4));
}
FileStream input = new FileStream(strFileName, FileMode.Open);
int iBytes = 0;
while ((iBytes = input.Read(buffer, 0, buffer.Length)) > 0)
{
socketData.Send(buffer, iBytes, 0);
}
input.Close();
if (socketData.Connected)
{
socketData.Close();
}
if (!(iReplyCode == 226 || iReplyCode == 250))
{
ReadReply();
if (!(iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
}
}
/// <summary>
/// 上傳一個文件
/// </summary>
/// <param name="strFileName">當地文件名</param>
public void PutByGuid(string strFileName, string strGuid)
{
if (!bConnected)
{
Connect();
}
string str = strFileName.Substring(0, strFileName.LastIndexOf("\\"));
string strTypeName = strFileName.Substring(strFileName.LastIndexOf("."));
strGuid = str + "\\" + strGuid;
System.IO.File.Copy(strFileName, strGuid);
System.IO.File.SetAttributes(strGuid, System.IO.FileAttributes.Normal);
Socket socketData = CreateDataSocket();
SendCommand("STOR " + Path.GetFileName(strGuid));
if (!(iReplyCode == 125 || iReplyCode == 150))
{
throw new IOException(strReply.Substring(4));
}
FileStream input = new FileStream(strGuid, FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read);
int iBytes = 0;
while ((iBytes = input.Read(buffer, 0, buffer.Length)) > 0)
{
socketData.Send(buffer, iBytes, 0);
}
input.Close();
File.Delete(strGuid);
if (socketData.Connected)
{
socketData.Close();
}
if (!(iReplyCode == 226 || iReplyCode == 250))
{
ReadReply();
if (!(iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
}
}
#endregion
#region 目次操作
/// <summary>
/// 創立目次
/// </summary>
/// <param name="strDirName">目次名</param>
public void MkDir(string strDirName)
{
if (!bConnected)
{
Connect();
}
SendCommand("MKD " + strDirName);
if (iReplyCode != 257)
{
throw new IOException(strReply.Substring(4));
}
}
/// <summary>
/// 刪除目次
/// </summary>
/// <param name="strDirName">目次名</param>
public void RmDir(string strDirName)
{
if (!bConnected)
{
Connect();
}
SendCommand("RMD " + strDirName);
if (iReplyCode != 250)
{
throw new IOException(strReply.Substring(4));
}
}
/// <summary>
/// 轉變目次
/// </summary>
/// <param name="strDirName">新的任務目次名</param>
public void ChDir(string strDirName)
{
if (strDirName.Equals(".") || strDirName.Equals(""))
{
return;
}
if (!bConnected)
{
Connect();
}
SendCommand("CWD " + strDirName);
if (iReplyCode != 250)
{
throw new IOException(strReply.Substring(4));
}
this.strRemotePath = strDirName;
}
#endregion
#region 外部函數
/// <summary>
/// 將一行應對字符串記載在strReply和strMsg,應對碼記載在iReplyCode
/// </summary>
private void ReadReply()
{
strMsg = "";
strReply = ReadLine();
iReplyCode = Int32.Parse(strReply.Substring(0, 3));
}
/// <summary>
/// 樹立停止數據銜接的socket
/// </summary>
/// <returns>數據銜接socket</returns>
private Socket CreateDataSocket()
{
SendCommand("PASV");
if (iReplyCode != 227)
{
throw new IOException(strReply.Substring(4));
}
int index1 = strReply.IndexOf('(');
int index2 = strReply.IndexOf(')');
string ipData = strReply.Substring(index1 + 1, index2 - index1 - 1);
int[] parts = new int[6];
int len = ipData.Length;
int partCount = 0;
string buf = "";
for (int i = 0; i < len && partCount <= 6; i++)
{
char ch = Char.Parse(ipData.Substring(i, 1));
if (Char.IsDigit(ch))
buf += ch;
else if (ch != ',')
{
throw new IOException("Malformed PASV strReply: " + strReply);
}
if (ch == ',' || i + 1 == len)
{
try
{
parts[partCount++] = Int32.Parse(buf);
buf = "";
}
catch (Exception)
{
throw new IOException("Malformed PASV strReply: " + strReply);
}
}
}
string ipAddress = parts[0] + "." + parts[1] + "." + parts[2] + "." + parts[3];
int port = (parts[4] << 8) + parts[5];
Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ep = new IPEndPoint(IPAddress.Parse(ipAddress), port);
try
{
s.Connect(ep);
}
catch (Exception)
{
throw new IOException("沒法銜接ftp辦事器");
}
return s;
}
/// <summary>
/// 封閉socket銜接(用於登錄之前)
/// </summary>
private void CloseSocketConnect()
{
lock (obj)
{
if (socketControl != null)
{
socketControl.Close();
socketControl = null;
}
bConnected = false;
}
}
/// <summary>
/// 讀取Socket前往的一切字符串
/// </summary>
/// <returns>包括應對碼的字符串行</returns>
private string ReadLine()
{
lock (obj)
{
while (true)
{
int iBytes = socketControl.Receive(buffer, buffer.Length, 0);
strMsg += ASCII.GetString(buffer, 0, iBytes);
if (iBytes < buffer.Length)
{
break;
}
}
}
char[] seperator = { '\n' };
string[] mess = strMsg.Split(seperator);
if (strMsg.Length > 2)
{
strMsg = mess[mess.Length - 2];
}
else
{
strMsg = mess[0];
}
if (!strMsg.Substring(3, 1).Equals(" ")) //前往字符串准確的是以應對碼(如220開首,前面接一空格,再接問候字符串)
{
return ReadLine();
}
return strMsg;
}
/// <summary>
/// 發送死令並獲得應對碼和最初一行應對字符串
/// </summary>
/// <param name="strCommand">敕令</param>
public void SendCommand(String strCommand)
{
lock (obj)
{
Byte[] cmdBytes = Encoding.ASCII.GetBytes((strCommand + "\r\n").ToCharArray());
socketControl.Send(cmdBytes, cmdBytes.Length, 0);
Thread.Sleep(500);
ReadReply();
}
}
#endregion
}
}
辦法二：
using System;
using System.Net;
using System.IO;
using System.Text;
using System.Net.Sockets;
namespace FtpLib
{
public class FTPFactory
{
private string
remoteHost, remotePath, remoteUser, remotePass, mes;
private int remotePort, bytes;
private Socket clientSocket;
private int retValue;
private Boolean debug;
private Boolean logined;
private string reply;
private static int BLOCK_SIZE = 512;
Byte[] buffer = new Byte[BLOCK_SIZE];
Encoding ASCII = Encoding.ASCII;
public FTPFactory()
{
remoteHost = "localhost";
remotePath = ".";
remoteUser = "anonymous";
remotePass = "";
remotePort = 21;
debug = false;
logined = false;
}
///
/// Set the name of the FTP server to connect to.
///
/// Server name
public void setRemoteHost(string remoteHost)
{
this.remoteHost = remoteHost;
}
///
/// Return the name of the current FTP server.
///
/// Server name
public string getRemoteHost()
{
return remoteHost;
}
///
/// Set the port number to use for FTP.
///
/// Port number
public void setRemotePort(int remotePort)
{
this.remotePort = remotePort;
}
///
/// Return the current port number.
///
/// Current port number
public int getRemotePort()
{
return remotePort;
}
///
/// Set the remote directory path.
///
/// The remote directory path
public void setRemotePath(string remotePath)
{
this.remotePath = remotePath;
}
///
/// Return the current remote directory path.
///
/// The current remote directory path.
public string getRemotePath()
{
return remotePath;
}
///
/// Set the user name to use for logging into the remote server.
///
/// Username
public void setRemoteUser(string remoteUser)
{
this.remoteUser = remoteUser;
}
///
/// Set the password to user for logging into the remote server.
///
/// Password
public void setRemotePass(string remotePass)
{
this.remotePass = remotePass;
}
///
/// Return a string array containing the remote directory's file list.
///
///
///
public string[] getFileList(string mask)
{
if (!logined)
{
login();
}
Socket cSocket = createDataSocket();
sendCommand("NLST " + mask);
if (!(retValue == 150 || retValue == 125))
{
throw new IOException(reply.Substring(4));
}
mes = "";
while (true)
{
int bytes = cSocket.Receive(buffer, buffer.Length, 0);
mes += ASCII.GetString(buffer, 0, bytes);
if (bytes < buffer.Length)
{
break;
}
}
char[] seperator = { '\n' };
string[] mess = mes.Split(seperator);
cSocket.Close();
readReply();
if (retValue != 226)
{
throw new IOException(reply.Substring(4));
}
return mess;
}
///
/// Return the size of a file.
///
///
///
public long getFileSize(string fileName)
{
if (!logined)
{
login();
}
sendCommand("SIZE " + fileName);
long size = 0;
if (retValue == 213)
{
size = Int64.Parse(reply.Substring(4));
}
else
{
throw new IOException(reply.Substring(4));
}
return size;
}
///
/// Login to the remote server.
///
public void login()
{
clientSocket = new
Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ep = new
IPEndPoint(Dns.Resolve(remoteHost).AddressList[0], remotePort);
try
{
clientSocket.Connect(ep);
}
catch (Exception)
{
throw new IOException("Couldn't connect to remote server");
}
readReply();
if (retValue != 220)
{
close();
throw new IOException(reply.Substring(4));
}
if (debug)
Console.WriteLine("USER " + remoteUser);
sendCommand("USER " + remoteUser);
if (!(retValue == 331 || retValue == 230))
{
cleanup();
throw new IOException(reply.Substring(4));
}
if (retValue != 230)
{
if (debug)
Console.WriteLine("PASS xxx");
sendCommand("PASS " + remotePass);
if (!(retValue == 230 || retValue == 202))
{
cleanup();
throw new IOException(reply.Substring(4));
}
}
logined = true;
Console.WriteLine("Connected to " + remoteHost);
chdir(remotePath);
}
///
/// If the value of mode is true, set binary mode for downloads.
/// Else, set Ascii mode.
///
///
public void setBinaryMode(Boolean mode)
{
if (mode)
{
sendCommand("TYPE I");
}
else
{
sendCommand("TYPE A");
}
if (retValue != 200)
{
throw new IOException(reply.Substring(4));
}
}
///
/// Download a file to the Assembly's local directory,
/// keeping the same file name.
///
///
public void download(string remFileName)
{
download(remFileName, "", false);
}
///
/// Download a remote file to the Assembly's local directory,
/// keeping the same file name, and set the resume flag.
///
///
///
public void download(string remFileName, Boolean resume)
{
download(remFileName, "", resume);
}
///
/// Download a remote file to a local file name which can include
/// a path. The local file name will be created or overwritten,
/// but the path must exist.
///
///
///
public void download(string remFileName, string locFileName)
{
download(remFileName, locFileName, false);
}
///
/// Download a remote file to a local file name which can include
/// a path, and set the resume flag. The local file name will be
/// created or overwritten, but the path must exist.
///
///
///
///
public void download(string remFileName, string
locFileName, Boolean resume)
{
if (!logined)
{
login();
}
setBinaryMode(true);
Console.WriteLine("Downloading file " + remFileName + " from " + remoteHost + "/" + remotePath);
if (locFileName.Equals(""))
{
locFileName = remFileName;
}
if (!File.Exists(locFileName))
{
Stream st = File.Create(locFileName);
st.Close();
}
FileStream output = new
FileStream(locFileName, FileMode.Open);
Socket cSocket = createDataSocket();
long offset = 0;
if (resume)
{
offset = output.Length;
if (offset > 0)
{
sendCommand("REST " + offset);
if (retValue != 350)
{
//throw new IOException(reply.Substring(4));
//Some servers may not support resuming.
offset = 0;
}
}
if (offset > 0)
{
if (debug)
{
Console.WriteLine("seeking to " + offset);
}
long npos = output.Seek(offset, SeekOrigin.Begin);
Console.WriteLine("new pos=" + npos);
}
}
sendCommand("RETR " + remFileName);
if (!(retValue == 150 || retValue == 125) )
{
throw new IOException(reply.Substring(4));
}
while (true)
{
bytes = cSocket.Receive(buffer, buffer.Length, 0);
output.Write(buffer, 0, bytes);
if (bytes <= 0)
{
break;
}
}
output.Close();
if (cSocket.Connected)
{
cSocket.Close();
}
Console.WriteLine("");
readReply();
if (!(retValue == 226 || retValue == 250))
{
throw new IOException(reply.Substring(4));
}
}
///
/// Upload a file.
///
///
public void upload(string fileName)
{
upload(fileName, false);
}
///
/// Upload a file and set the resume flag.
///
///
///
public void upload(string fileName, Boolean resume)
{
if (!logined)
{
login();
}
Socket cSocket = createDataSocket();
long offset = 0;
if (resume)
{
try
{
setBinaryMode(true);
offset = getFileSize(fileName);
}
catch (Exception)
{
offset = 0;
}
}
if (offset > 0)
{
sendCommand("REST " + offset);
if (retValue != 350)
{
//throw new IOException(reply.Substring(4));
//Remote server may not support resuming.
offset = 0;
}
}
sendCommand("STOR " + Path.GetFileName(fileName));
if (!(retValue == 125 || retValue == 150))
{
throw new IOException(reply.Substring(4));
}
// open input stream to read source file
FileStream input = new
FileStream(fileName, FileMode.Open);
if (offset != 0)
{
if (debug)
{
Console.WriteLine("seeking to " + offset);
}
input.Seek(offset, SeekOrigin.Begin);
}
Console.WriteLine("Uploading file " + fileName + " to " + remotePath);
while ((bytes = input.Read(buffer, 0, buffer.Length)) > 0)
{
cSocket.Send(buffer, bytes, 0);
}
input.Close();
Console.WriteLine("");
if (cSocket.Connected)
{
cSocket.Close();
}
readReply();
if (!(retValue == 226 || retValue == 250))
{
throw new IOException(reply.Substring(4));
}
}
///
/// Delete a file from the remote FTP server.
///
///
public void deleteRemoteFile(string fileName)
{
if (!logined)
{
login();
}
sendCommand("DELE " + fileName);
if (retValue != 250)
{
throw new IOException(reply.Substring(4));
}
}
///
/// Rename a file on the remote FTP server.
///
///
///
public void renameRemoteFile(string oldFileName, string
newFileName)
{
if (!logined)
{
login();
}
sendCommand("RNFR " + oldFileName);
if (retValue != 350)
{
throw new IOException(reply.Substring(4));
}
// known problem
// rnto will not take care of existing file.
// i.e. It will overwrite if newFileName exist
sendCommand("RNTO " + newFileName);
if (retValue != 250)
{
throw new IOException(reply.Substring(4));
}
}
///
/// Create a directory on the remote FTP server.
///
///
public void mkdir(string dirName)
{
if (!logined)
{
login();
}
sendCommand("MKD " + dirName);
if (retValue != 257)
{
throw new IOException(reply.Substring(4));
}
}
///
/// Delete a directory on the remote FTP server.
///
///
public void rmdir(string dirName)
{
if (!logined)
{
login();
}
sendCommand("RMD " + dirName);
if (retValue != 250)
{
throw new IOException(reply.Substring(4));
}
}
///
/// Change the current working directory on the remote FTP server.
///
///
public void chdir(string dirName)
{
if (dirName.Equals("."))
{
return;
}
if (!logined)
{
login();
}
sendCommand("CWD " + dirName);
if (retValue != 250)
{
throw new IOException(reply.Substring(4));
}
this.remotePath = dirName;
Console.WriteLine("Current directory is " + remotePath);
}
///
/// Close the FTP connection.
///
public void close()
{
if (clientSocket != null)
{
sendCommand("QUIT");
}
cleanup();
Console.WriteLine("Closing...");
}
///
/// Set debug mode.
///
///
public void setDebug(Boolean debug)
{
this.debug = debug;
}
private void readReply()
{
mes = "";
reply = readLine();
retValue = Int32.Parse(reply.Substring(0, 3));
}
private void cleanup()
{
if (clientSocket != null)
{
clientSocket.Close();
clientSocket = null;
}
logined = false;
}
private string readLine()
{
while (true)
{
bytes = clientSocket.Receive(buffer, buffer.Length, 0);
mes += ASCII.GetString(buffer, 0, bytes);
if (bytes < buffer.Length)
{
break;
}
}
char[] seperator = { '\n' };
string[] mess = mes.Split(seperator);
if (mes.Length > 2)
{
mes = mess[mess.Length - 2];
}
else
{
mes = mess[0];
}
if (!mes.Substring(3, 1).Equals(" "))
{
return readLine();
}
if (debug)
{
for (int k = 0; k < mess.Length - 1; k++)
{
Console.WriteLine(mess[k]);
}
}
return mes;
}
private void sendCommand(String command)
{
Byte[] cmdBytes =
//Encoding.ASCII.GetBytes((command + "\r\n").ToCharArray());
Encoding.Default.GetBytes((command + "\r\n").ToCharArray());
clientSocket.Send(cmdBytes, cmdBytes.Length, 0);
readReply();
}
private Socket createDataSocket()
{
sendCommand("PASV");
if (retValue != 227)
{
throw new IOException(reply.Substring(4));
}
int index1 = reply.IndexOf('(');
int index2 = reply.IndexOf(')');
string ipData =
reply.Substring(index1 + 1, index2 - index1 - 1);
int[] parts = new int[6];
int len = ipData.Length;
int partCount = 0;
string buf = "";
for (int i = 0; i < len && partCount <= 6; i++)
{
char ch = Char.Parse(ipData.Substring(i, 1));
if (Char.IsDigit(ch))
buf += ch;
else if (ch != ',')
{
throw new IOException("Malformed PASV reply: " +
reply);
}
if (ch == ',' || i + 1 == len)
{
try
{
parts[partCount++] = Int32.Parse(buf);
buf = "";
}
catch (Exception)
{
throw new IOException("Malformed PASV reply: " +
reply);
}
}
}
string ipAddress = parts[0] + "." + parts[1] + "." +
parts[2] + "." + parts[3];
int port = (parts[4] << 8) + parts[5];
Socket s = new
Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ep = new
IPEndPoint(Dns.Resolve(ipAddress).AddressList[0], port);
try
{
s.Connect(ep);
}
catch (Exception)
{
throw new IOException("Can't connect to remote server");
}
return s;
}
}
}
以上所述就是本文的全體內容了，願望年夜家可以或許愛好。
