Suitability for building ftp client java vs C++

Java and C++ have their own set of advantages and disadvantages. WHich one would be more suitable if I want to develop a ftp client? This decision would be very critical for my small company ........ so plz. help!

What is your target platform ?
If your ftp client is going to be installed on just one Operating System (Windows or Solaris etc) then C++ would be the better choice - unless you want to bundle a JVM with your client, or can guarantee that each machine will have a JVM.
If your ftp client will be installed on various platforms then Java is better - because your target environment is always a JVM. You just need to make sure that a JVM is available.
Writing the ftp client should be no problem in either language - I've used both for ftp clients and don't really have any preference for the job.
It really does depend on your target platform

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FTP client for Snow Leopard?

Hi, I hope someone can help me
I am looking for an FTP client that has similar functions to that in Dreamweaver. I need to manage and build a website. The FTP program must have the ability to automatically mark files that I have edited on my computer, so that I can upload them whenever etc.
Do you know any such programs, compatible with Snow Leopard?
Thanks!

Don't hold me to it, but I don't think you'll find an FTP client which tracks all file modifications.
Of course there is! Use [Interarchy|http://nolobe.com/interarchy>, you can set up "mirrors", where it will make a local folder and a directory on an FTP server exact mirrors of each other. Cyberduck does the same thing, though I had some problems with that when I tried it.

Cannot configure wrt54gs v6 router for use with filezilla FTP client

I am new to working with FTP and very rusty on networking in general. I just downloaded filezilla to create a FTP client on my desktop. When I run their wizard, it says the connection is tainted by my router. All the forums for filezilla say I need to configure my router to allow traffic on either port 21 (ftp) or a range of ports ( they suggest 50000 to 50100).
Please let me know what I need to do to make this work
thanks in advance
ldygunner

To answer your other questions, the tutorials have it all wrong. What they really need to explain, but fail to do so, is that the only situation where a FTP client would need to use active mode (the PORT command) is where the FTP server can't accept inbound connections on arbitrary port numbers. But that's a pathological case anyway: the FTP server can always accept connections on some well defined set of port numbers, to keep its own local firewall or NAT router happy. Consequently, there is really no need at all for a FTP client system to open up any ports to support active mode, rather than always operate in passive mode (as browsers do.)
The fact of the matter is that if passive mode works in a browser for you, it will work for Filezilla also.
And the configuration tests it runs are brain damaged. Even though the wizard recommends passive mode, it never tests for it. And it doesn't really test active mode either. What it really tests is whether anything between the client and the server is "transparently" translating IP addresses and port numbers. Such a test is broken, because the mere fact of port numbers being rewritten in TCP packets is irrelevant to whether PORT (active mode) will succeed or fail.
For completeness, in case someone decides to get pedantic, there is a case where a FTP client system would need the active mode PORT command to work, but that case is now of historical interest only. It's a scenario that FTP servers no longer support, for security reasons. (What is it? When the FTP client is operating as a controller to remotely transfer files between two servers: it tells one server to use passive mode, and sends the address/port it gets to the other server in active mode, which in theory would make the second server open a connection to the first. This, in fact, is why two modes, active and passive, were originally defined in the FTP standard!) And it still wouldn't need open ports on the client system.
Message Edited by arayq2 on 10-19-2008 09:12 PM

FTP Clients on E72: can't get any to work

Hello again.
So, I've been trying to get FTP Client functionality on my Nokia E72. I guess I'm just doing something wrong, but I cannot figure it out.
I tried:
* SIC! FTP (native Symbian App)
* PaderSyncFTP (Java)
* MobyExplorer (Java)
None of the applications work on my E72. They do work however (with the same SIM card) on my Nokia 6120 classic.
The applications seemingly try to connect on the E72, however it never actually initiates a packet data connection at all. As if there wouldn't be an application trying to access the Internet.. I also tried to set up WLAN as my primary access point. Works for everything else, but not for those FTP clients.
I tried several FTP servers on different ports (21, 666, 667). All work on 6120 classic, none work on E72. Also tried to switch from passive to active mode to no avail.
Funny thing is: When I use my PuTTY SSH Client on E72 to just probe an FTP servers port, that works! I can see the connection attempt in my FTP Servers logfile, and I can see the Server responding in PuTTY!! But with the actual FTP clients i never even get out into the network, wether I try to use WLAN or 3.5G..
I'm lost. Everything else works. SSH2 using PuTTY works, Skype works, webbrowsing works.
What could be prohibiting all those FTP clients from initiating a connection?! For MobyExplorer I even tried all of its four "connection modes" that they have for "buggy firmwares". Doesn't make a difference at all.
Also: Those apps never ask for an Access Point on the E72, even if the AP is configured to do so.
I have no idea what to do... Any advice would be appreciated! Maybe it's just some strange configuration issue..
Thanks.

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Is Adobe Flex suitable to build a Multimedia Presentation?

I am looking for some advice on the suitability of using
Adobe Flex for building a Multimedia presentation system. I have
watched numerous videos about Flex and even tried some tutorials
but before I make a decision on Technologies for a project I am
working on, I wanted to consult the Flex community for some advice.
I have to take Multimedia Presentation made using PowerPoint
and build it into a custom made Multimedia Presentation that has
similar functionality. Would Adobe Flex would be a suitable tool?
The Presentation must be viewable on the Internet and be deployed
to the Desktop so combining Flex with Adobe AIR would be needed to
meet this requirement.
I guess the general requirements are as follows:-
The user must be able to navigate forward and backward
through pages of the presentation.
The Presentation must be able to display Flash video's. When
video is played, the video must open in a new window infront of the
main application. Images and animated GIF'S must have the same
functionality.
Based on these requirements, would Flex be suitable?
Thanks in advance for you help and advice.

I think Flex would be very suitable for building a multimedia
presentation system. Once you create your Flex app and generate the
SWF file, you can post it on the web, or view it on the desltop,
even without AIR. You could use view states to transition between
pages, though you would have other options as well. You could
display Flash videos easily, and I believe you could have the video
open in a new top window. Same with images and gifs. Flex would be
a very good choice I believe.

How to get the FTP clients to work?

This is something that (to me at least) should be trivial but I just can't
get it to work at all.
How do you get an FTP client to work?
I've tried several GUI clients as well as the terminal FTP command and they
all seem to get stuck entering passive mode - according to the log entries
they send the command.... And then nothing or a timeout, the following is
from the terminal FTP command:
Titania:~ susan$ ftp ftp.apple.com
Trying 17.254.16.11...
Connected to ftp.apple.com.
220 17.254.16.11 FTP server ready
Name (ftp.apple.com:susan): anonymous
331 Anonymous login ok, send your complete email address as your password.
Password:
230 Anonymous access granted, restrictions apply.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls
501 EPSV: Operation not permitted
227 Entering Passive Mode (17,254,16,11,223,157).
200 PORT command successful
421 Service not available, remote server timed out. Connection closed
ftp>
In my System Preferences -> Network panel in the Proxies tab, I have the
"use Passive FTP mode (PASV) checked.
I also have checked the FTP firewall option (but I think that is only if I'm
acting as an FTP server).
I am connected to the internet via a Netgear wireless router.
I also have an old Windows laptop that also uses the same wireless router
and it can FTP quite happily!!!!!
Any suggestions would be gratefully received.
Susan

ejn - thanks for your continued assistance.
I've tried turning the firewall off but this does not appear to make any difference(*). Also, I have Parallels installed and I'm sharing the internet connection with this (even though Parallels itself is not currently running). Turning this sharing off doesn't seem to change anything either.
I have noticed some entries in the ifpw.log file that coincide with some of the ftp actions. Given the following terminal session:
Titania:~ susan$ ftp ftp.apple.com
Trying 17.254.16.10...
Connected to ftp.apple.com.
220 17.254.16.10 FTP server ready
Name (ftp.apple.com:susan): anonymous
331 Anonymous login ok, send your complete email address as your password.
Password:
230 Anonymous access granted, restrictions apply.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls
501 EPSV: Operation not permitted
227 Entering Passive Mode (17,254,16,10,245,46).
200 PORT command successful
421 Service not available, remote server timed out. Connection closed
ftp>
at the time the "200 PORT command successful" is displayed, the ifpw log starts showing:
Sep 5 09:11:21 Titania ipfw: 12190 Deny TCP 17.254.16.10:20 192.168.0.5:49162 in via en1
Sep 5 09:11:24 Titania ipfw: 12190 Deny TCP 17.254.16.10:20 192.168.0.5:49162 in via en1
Sep 5 09:11:27 Titania ipfw: 12190 Deny TCP 17.254.16.10:20 192.168.0.5:49162 in via en1
Sep 5 09:11:30 Titania ipfw: 12190 Deny TCP 17.254.16.10:20 192.168.0.5:49162 in via en1
Sep 5 09:11:33 Titania ipfw: 12190 Deny TCP 17.254.16.10:20 192.168.0.5:49162 in via en1
Sep 5 09:11:36 Titania ipfw: 12190 Deny TCP 17.254.16.10:20 192.168.0.5:49162 in via en1
Sep 5 09:11:42 Titania ipfw: 12190 Deny TCP 17.254.16.10:20 192.168.0.5:49162 in via en1
which makes sense as the system tries to go for an active transfer.
(*) Actually, while I've been writing this, I've been playing on the terminal as well. I've found the combination of:
1) turning off the firewall
2) starting ftp
3) issuing the 'passive' command to turn off passive mode
4) issuing 'ls' etc. works
Looks like I've not been waiting long enough for the ftp client to get sick of trying the passive transfer and switching to an active one with the firewakk turned off!
Still doesn't answer the question - why does passive mode not work?
Susan

Error in resource clean up for a disconnected client

Hi
we are using NW04s portal. in the default.log of this dispatcher I continuously receive the following error. this is fulling my log in less then 10 minutes. anobody have an id ??
regards
#1.#00156004CA3300070000FEEC000062CA00043EE5ADC2F2ED#1195056074160#com.sap.engine.core.manipulator.TCPRunnableConnection##com.sap.engine.core.manipulator.TCPRunnableConnection.closeConnection()#######OrderedChannel for http service##0#0#Warning#1#/System/Network#Java###Exception occurred while closing connection.
[EXCEPTION]
#1#java.net.SocketException: Socket already closed.
        at iaik.security.ssl.SSLTransport.a(Unknown Source)
        at iaik.security.ssl.SSLOutputStream.flush(Unknown Source)
        at com.sap.engine.core.manipulator.TCPRunnableConnection.closeConnection(TCPRunnableConnection.java:194)
        at com.sap.engine.core.manipulator.TCPRunnableConnection$CloseThread.run(TCPRunnableConnection.java:1050)
        at com.sap.engine.core.manipulator.TCPRunnableConnection.run(TCPRunnableConnection.java:547)
        at com.sap.engine.frame.core.thread.Task.run(Task.java:64)
        at com.sap.engine.core.thread.impl6.SingleThread.execute(SingleThread.java:78)
        at com.sap.engine.core.thread.impl6.SingleThread.run(SingleThread.java:148)
#1.#00156004CA3300070000FEED000062CA00043EE5ADC2F71B#1195056074162#com.sap.engine.services.httpserver.dispatcher##com.sap.engine.services.httpserver.dispatcher#######OrderedChannel for http service##0#0#Error##Plain###Connection [237267712] is NOT removed! serverToConnections = [{299438950={}, 299438951={}, 299438952={}, 278697050={}, 278697051={}, 278697052={}, 8914750={}, 8914751={}, -1={}, 8914752={}, 299438900={}, 278697000={}, 8914700={}, 261671250={}, 261671251={}, 261671252={}, 261671200={}, 289070750={com.sap.engine.core.manipulator.TCPRunnableConnection@4c032069[closed=false, initialize=false, markedForClose=false, passCount=1, replyThreadRunning=false, replyThreadToStart=false, readThreadRunning=true, serviceName=http, synchronous=1, workingThreads=1, inProcess=true, dataFromServer=false, connectionID=237253376], com.sap.engine.core.manipulator.TCPRunnableConnection@5424bf0[closed=false, initialize=false, markedForClose=false, passCount=1, replyThreadRunning=false, replyThreadToStart=false, readThreadRunning=true, serviceName=http, synchronous=1, workingThreads=1, inProcess=true, dataFromServer=false, connectionID=237255680], com.sap.engine.core.manipulator.TCPRunnableConnection@73eef3b0[closed=false, initialize=false, markedForClose=false, passCount=1, replyThreadRunning=false, replyThreadToStart=false, readThreadRunning=true, serviceName=http, synchronous=1, workingThreads=1, inProcess=true, dataFromServer=false, connectionID=237250816], com.sap.engine.core.manipulator.TCPRunnableConnection@5978bb14[closed=false, initialize=false, markedForClose=false, passCount=1, replyThreadRunning=false, replyThreadToStart=false, readThreadRunning=true, serviceName=http, synchronous=1, workingThreads=1, inProcess=true, dataFromServer=false, connectionID=237260288], com.sap.engine.core.manipulator.TCPRunnableConnection@44ad78a2[closed=false, initialize=false, markedForClose=false, passCount=1, replyThreadRunning=false, replyThreadToStart=false, readThreadRunning=true, serviceName=http, synchronous=1, workingThreads=1, inProcess=true, dataFromServer=false, connectionID=237260800]}, 289070751={com.sap.engine.core.manipulator.TCPRunnableConnection@193c7c35[closed=false, initialize=false, markedForClose=false, passCount=1, replyThreadRunning=false, replyThreadToStart=false, readThreadRunning=true, serviceName=http, synchronous=1, workingThreads=1, inProcess=true, dataFromServer=false, connectionID=237256960], com.sap.engine.core.manipulator.TCPRunnableConnection@6909037d[closed=false, initialize=false, markedForClose=false, passCount=1, replyThreadRunning=false, replyThreadToStart=false, readThreadRunning=true, serviceName=http, synchronous=1, workingThreads=1, inProcess=true, dataFromServer=false, connectionID=237260544], com.sap.engine.core.manipulator.TCPRunnableConnection@68634baf[closed=false, initialize=false, markedForClose=false, passCount=1, replyThreadRunning=false, replyThreadToStart=false, readThreadRunning=true, serviceName=http, synchronous=1, workingThreads=1, inProcess=true, dataFromServer=false, connectionID=237235200]}, 289070752={com.sap.engine.core.manipulator.TCPRunnableConnection@4e3f905b[closed=false, initialize=false, markedForClose=false, passCount=1, replyThreadRunning=false, replyThreadToStart=false, readThreadRunning=true, serviceName=http, synchronous=1, workingThreads=1, inProcess=true, dataFromServer=false, connectionID=237242368], com.sap.engine.core.manipulator.TCPRunnableConnection@5424bf0[closed=false, initialize=false, markedForClose=false, passCount=1, replyThreadRunning=false, replyThreadToStart=false, readThreadRunning=true, serviceName=http, synchronous=1, workingThreads=1, inProcess=true, dataFromServer=false, connectionID=237255680], com.sap.engine.core.manipulator.TCPRunnableConnection@7b15d277[closed=false, initialize=false, markedForClose=false, passCount=1, replyThreadRunning=false, replyThreadToStart=false, readThreadRunning=true, serviceName=http, synchronous=1, workingThreads=1, inProcess=true, dataFromServer=false, connectionID=237247744], com.sap.engine.core.manipulator.TCPRunnableConnection@6ba5d6d6[closed=false, initialize=false, markedForClose=false, passCount=1, replyThreadRunning=false, replyThreadToStart=false, readThreadRunning=true, serviceName=http, synchronous=1, workingThreads=1, inProcess=true, dataFromServer=false, connectionID=237249280], com.sap.engine.core.manipulator.TCPRunnableConnection@23ec4333[closed=false, initialize=false, markedForClose=false, passCount=1, replyThreadRunning=false, replyThreadToStart=false, readThreadRunning=true, serviceName=http, synchronous=1, workingThreads=1, inProcess=true, dataFromServer=false, connectionID=237199104], com.sap.engine.core.manipulator.TCPRunnableConnection@3f29a75a[closed=false, initialize=false, markedForClose=false, passCount=1, replyThreadRunning=false, replyThreadToStart=false, readThreadRunning=true, serviceName=http, synchronous=1, workingThreads=1, inProcess=true, dataFromServer=false, connectionID=237213952]}}]#
#1.#00156004CA3300070000FEEE000062CA00043EE5ADC2F885#1195056074162#com.sap.engine.services.httpserver.dispatcher##com.sap.engine.services.httpserver.dispatcher#######OrderedChannel for http service##0#0#Error##Plain###Error in resource clean up for a disconnected client
java.lang.NullPointerException

Hi guys
We are running a EP 7.0. We have external clients connecting from the internet through a 3rd party application gateway / reverse proxy. We have the problem that this gateway responds with 'service unavailable' while direct http(s) connections to the portal work without problem.
Now i noticed the same messages in the dispatcher default trace.
2008-02-07 17:40:55:155 Connection 300800 is NOT removed! serverToConnections = ...
2008-02-07 17:40:55:154 Exception occurred while closing connection. EXCEPTION java.net.SocketException: Socket already closed....
2008-02-07 17:40:55:154 Cannot get input and output streams from socket. ConnectionsManipulator is not initialized. EXCEPTION java.io.EOFException: Connection closed by remote host....
I do not have a solution here, but i list some information on our system, so you can compare it to your environnements.
- Enterprise Portal 7.0 SP13
- our network guys observed a lot of tcp connections from the gateway to the portal with status CLOSE_WAIT
- they also observed the portal sending a RST tcp packet instead of FIN (or FIN_ACK?)
- the application gateway runs on Sun Solaris the portal on Linux x86_64
- connection uses https
The issue is very obscure, we are trying to tcpdump and decrypt the data, but no luck so far.
Best regards, Michael

FTP Client via iWeb

Can I use my iWeb site for a FTP Client?
I just downloaded Classic FTP for Mac and it's requesting that I designate a 'site'. I'm inexperienced in this area so not sure what I'm supposed to do.
Any guidance would be extremely appreciated.
Barry

Publish your iWeb site to a local folder and designate that as the site.
For more on this...
http://iwebfaq.org/site/iWebFolderFTP.html

FTP-Clients compatible with OES-PureFTPd - remote-home-feature

Hi folks,
I'm searching for Windows FTP Clients which are compatible with OES-FTP-Service (OES11SP1) and which support the remote-home feature. Until today I have only found filezilla (only in cygwin-Servertype configuration) which can handle a remote syntax like \\edir-servername to switch to another fileserver in the tree without any problems.
Do you know any other ftp-clients for windows which support that remote-feature?
Cheers, k.

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Implicit SSL + FTP client???

Hi!
I've been looking for a FTP-client that supports the (not so common in the linux world) standard implicit SSL.
I've been trying IglooFTP, Kasablanca, lftp and kbear and so on..but none have worked...
does anyone have any ideas??
what I have found about implicit ssl, is that it is kind of standard in the windows world ((almost all ftp-clients such as ws_ftp and cuteftp supports it) but not in the rest of the world..

hi there!
found this http://www.ford-hutchinson.com/~fh-1-pfh/ftps-ext.html
it is a list of which clients that supprts different ssl-implementations

Java FTP client do not work in Solaris 10

We just upgrade our Solaris 8.0 system to Solaris10. A java FTP client don't work anymore when I try to download a remote file. It worked nicely in Solaris8. Specifically, this java program is using JDK FtpClient, the command that downloading a file is something like this:
TelnetInputStream in = ftpClient.get(remotefilename);
However, I still can send a file to a remote machine. Anyone knows this?
Thnak you very much!

Hello Community,
the problem is solved. The VM on the workstation is very slow. The Java EE server use more than one hour to start. No problem with the hardware key or anything else, only a problem of my patience. It seems that the configuration file of the VM stores special entrys of the basic physical machine to run optimal. And which is optimal for the notebook is not optimal for the workstation.
Cheers
Stefan
Edited by: Stefan Schnell on Mar 4, 2008 2:10 PM

Building a FTP client

hi all,
i want to build an ftp client using swing. where should i start. i have the ftp rfc with me but that is not helping much,
thanx in advance,
parminder

JavaWorld published an article about this topic. It is called "Java FTP client libraries reviewed" and it can be found here :
http://www.javaworld.com/javaworld/jw-04-2003/jw-0404-ftp.html
Best regards
Jean-Pierre Norguet
Jean-Pierre Norguet
JavaWorld Press
http://wasa.ulb.ac.be/jp.html

Looking for a specific feature in an FTP Client

Hello!
I am looking for a "simple" feature in any FTP client for OS X.
I have tried Fetch, Transmit, CyberDuck and Interarchy 7.x and none had the ability to throttle uploads/downloads. I work with a limited bandwidth and sometimes have to download files (or upload) in the background but at a very slow speed (because the peer has a poor connection).
None of these nice (and they are nice!) ftp programs can do this. I have to either use wget via the command line (wget --limit-rate=xx) or use Total Commander for Windows inside a Parallels Virtual Machine.
Does anybody know about a Mac FTP client that can throttle and enqueue items easily?
Thanks in advance!

Look at "lftp". It as about a zillion parameters that can be set. One of them is "net:limit-total-rate"
Quoted from the Docs....
limit transfer rate of all connections in sum. 0 means unlimited. You can specify two numbers separated by colon to limit download and upload rate separately. Note that sockets have receive buffers on them, this can lead to network link load higher than this rate limit just after transfer beginning. You can try to set net:socket-buffer to relatively small value to avoid this.
Find lftp here lftp.yar.ru It is also in thr Fink archive. http://fink.sourceforge.net/

Trying to install InDesign (Adobe) but when I double click the Install it calls up FTP Client Ultimate?? What is the install program for MACBook Pro?

I'm new to MAC, that said I really haven't had much trouble with it except today I am trying to install Adobe InDesgin but it keeps trying to use FTP Client Ultimate to do so.. What is the installer that it should be using? I was hoping it would auto start and install but no such luck..

Thanks, I have posted to Adobe regarding their program, but my question here ( I'm new to Mac world) is what install program would normally install this? For some reason my MacBook pro keeps calling on FTP Client Ultimate to do the install and clearly that's not the right program to install a program..
I Love mu Mac, but getting help is a it frustrating...
i'm sure Apple has a program similar to InDesign, but have no idea what it would be..

Suitability for building ftp client java vs C++

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