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每一个Ftp发送之后,Ftp服务器都会返回一个字符串,其中包括一个返回代码和一串说明信息。这个返回码主要是用于判断命令是否被成功执行了。除此之外,还有一个非常重要的命令的返回。当发送PASV之后,返回“227 Entering Passive Mode (127,0,0,1,4,18)”。这意味着在服务器上有一个端口被开放,他将为我们后面接着的数据传输作好准备,但是我们如何知道该端口号呢,就在(127,0,0,1,4,18)中,前面四位指服务器的地址,关键是最后两位,将最后第二位乘256再加上最后一位的值就是我们的端口号,也就是4*256+18。取得端口号之后我们就可以用socket连接到这里。这为我们后面的工作作好准备了,因为我们的取得列表,上传,下载文件都要依靠它来实现
Update : 2008-10-13 Size : 1.8kb Publisher : 方波

FTP的工作方式:Active FTP 及 Passive FTP
Update : 2010-09-26 Size : 39kb Publisher : fancysky@pchome.com.tw

每一个Ftp发送之后,Ftp服务器都会返回一个字符串,其中包括一个返回代码和一串说明信息。这个返回码主要是用于判断命令是否被成功执行了。除此之外,还有一个非常重要的命令的返回。当发送PASV之后,返回“227 Entering Passive Mode (127,0,0,1,4,18)”。这意味着在服务器上有一个端口被开放,他将为我们后面接着的数据传输作好准备,但是我们如何知道该端口号呢,就在(127,0,0,1,4,18)中,前面四位指服务器的地址,关键是最后两位,将最后第二位乘256再加上最后一位的值就是我们的端口号,也就是4*256+18。取得端口号之后我们就可以用socket连接到这里。这为我们后面的工作作好准备了,因为我们的取得列表,上传,下载文件都要依靠它来实现-err
Update : 2025-02-17 Size : 2kb Publisher : 方波

一套使用C#开发的FTP服务器程序,支持主动和被动传输模式,适合需要定制服务器端传输逻辑的用户做二次开发。-Using a C# The FTP server program developed to support the active and passive transfer mode, suitable for the need for custom server-side logic transmission users to do secondary development.
Update : 2025-02-17 Size : 253kb Publisher : Jacky

testbox1: {/home/p-t/slacker/public_html} ftp -d testbox2 Connected to testbox2.slacksite.com. 220 testbox2.slacksite.com FTP server ready. Name (testbox2:slacker): slacker ---> USER slacker 331 Password required for slacker. Password: TmpPass ---> PASS XXXX 230 User slacker logged in. ---> SYST 215 UNIX Type: L8 Remote system type is UNIX. Using binary mode to transfer files. ftp> passive Passive mode on. ftp> ls ftp: setsockopt (ignored): Permission denied ---> PASV 227 Entering Passive Mode (192,168,150,90,195,149). ---> LIST 150 Opening ASCII mode data connection for file list drwx------ 3 slacker users 104 Jul 27 01:45 public_html 226 Transfer complete. ftp> quit ---> QUIT 221 Goodbye.-testbox1: {/home/p-t/slacker/public_html} ftp-d testbox2 Connected to testbox2.slacksite.com. 220 testbox2.slacksite.com FTP server ready. Name (testbox2:slacker): slacker ---> USER slacker 331 Password required for slacker. Password: TmpPass ---> PASS XXXX 230 User slacker logged in. ---> SYST 215 UNIX Type: L8 Remote system type is UNIX. Using binary mode to transfer files. ftp> passive Passive mode on. ftp> ls ftp: setsockopt (ignored): Permission denied ---> PASV 227 Entering Passive Mode (192,168,150,90,195,149). ---> LIST 150 Opening ASCII mode data connection for file list drwx------ 3 slacker users 104 Jul 27 01:45 public_html 226 Transfer complete. ftp> quit ---> QUIT 221 Goodbye.
Update : 2025-02-17 Size : 40kb Publisher : Omk

Delphi 版的, 通过 WinSock2 实现 FTP 协议, 实现多线程下载, 目前只支持被动模式-Version of Delphi, through the FTP protocol to achieve WinSock2 to achieve multi-threaded download, currently only support passive mode
Update : 2025-02-17 Size : 96kb Publisher : leovin

DL : 0
c#开发的ftp软件,实现了断点续传 被动主动模式等-c# development ftp software to achieve HTTP passive active mode
Update : 2025-02-17 Size : 47kb Publisher : Storys

DL : 0
FTP分为主动模式和被动模式两种,FTP工作在主动模式使用TCP 21和20两个端口,而工作在被动模式会工作在大于1024随机端口。FTP采用C/S模式,且客户端和服务器处在不对等地位。-FTP is divided into two kinds of active mode and passive mode, FTP work in active mode using the two-port TCP 21 and 20, while working in passive mode working in more than 1024 random port. FTP using C/S mode, and the client and server in a wrong position and so on.
Update : 2025-02-17 Size : 2.52mb Publisher : bingbingbing

DL : 0
linux下ftp协议客户端代码.实现登陆,被动连接,文件的上传,下载等功能,利于新手了解ftp协议工作机制.-ftp protocol under linux client code. to achieve landing, passive connectivity, file upload, download and other functions, which will help novice to understand the working mechanism ftp protocol.
Update : 2025-02-17 Size : 4kb Publisher : 100

DL : 0
Linux下的ftp客户端+服务器程序,该程序包括了登录、上传文件、下载文件等主要功能,且支持passive和port两种模式-ftp server and client under Linux platform
Update : 2025-02-17 Size : 197kb Publisher : polo

一个短小精悍的FTP Server端源码实现,具备上传,下载,List,主被动模式等基本的FTP功能,您还可在上面继续添加新的功能,适合研究FTP协议的初学者。-a concise ftp server source code with the elementary functionality, such as put,get ,list, passive mode ...
Update : 2025-02-17 Size : 22kb Publisher : 王磊

Simple example to upload a file to an FTP server using passive mode.
Update : 2025-02-17 Size : 1kb Publisher : maria

FTP主动被动模式范例 详细说明FTP主动被动模式流程-ftp passive port mode sample code
Update : 2025-02-17 Size : 5kb Publisher : hanning

一份ftp主动模式与被动模式的分析,可以参考一下-Analysis of a ftp active mode and passive mode, you can refer
Update : 2025-02-17 Size : 473kb Publisher : wulala

FTP Packet Captures for the passive 7 active mode
Update : 2025-02-17 Size : 713kb Publisher : Pradeep B S

lr中ftp被动模式源脚本,本人录制后完善。-lr in passive mode ftp source scripts, I sound after recording.
Update : 2025-02-17 Size : 2kb Publisher : lvmeilan

ftp客户端工具类,被动模式上传下载,使用比较简单-ftp client tools, passive mode upload and download
Update : 2025-02-17 Size : 15kb Publisher : xueqiang

FTP client端,包括双向,传输速度,主动被动,bit/字节等模式。C语言。-The FTP client, including bi-directional transmission speed, active and passive, bit/byte modes. C language.
Update : 2025-02-17 Size : 6kb Publisher : wendy

silverlight+VS2010实现FTP上传于下载,FTP 采用被动模式PASV方式进行连接,可以实现FTP客户端与FileZilla的通信。-silverlight+ VS2010 FTP upload achieve downloading, FTP passive mode PASV way connection, you can communicate with the FileZilla FTP client s.
Update : 2025-02-17 Size : 1.52mb Publisher : hanming

DL : 0
被动模式访问FTP服务器,适用于大部分linux系统默认的FTP模式(chenge FTP mode to Passive mode, suit for most linux)
Update : 2025-02-17 Size : 10kb Publisher : wavelets
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