Multiple FTP connections
I'm using Labview 8.2 with Internet toolkit. I'd like to connect to multiple FTP sites, and download files from all sites simultaneously. I would simply use parallel cycles to do that, but it's not possible because the toolkit's FTP VIs are not reentrant, so for example i can't run two "FTP Get File.vi" at the same time. Do you think i could modify those VIs, making them reentrant, or there is some technical limit that allows only one FTP download at a time?
Thanks Paolo, i tried to set as reentrant all the call chain to TCP Read Stream.vi; i also tried to set as reentrant all the FTP VIs, except FTP Registry.vi which looks like a functional global. It seems to work, i can download from two FTP sites simultaneously, but the gain in performance is very low. Parallel downloading (two groups of files from two sites) takes only 10% less time than serial downloading (one site at a time). Where's the bottleneck? Maybe total network speed?
Similar Messages
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Multiple FTP Connections in Leopard....
To make a long story short, I decided to buy a big bad FTP client after years of using FileZilla.
It posed so many problems and no matter what I was able to do, It would not establish multiple connections. There are ways to adjust your TCP, port numbers, and latency. But all of that is so far over my head.
Is there an easy way to configure an FTP client in Leopard?
Thank you,
Mark.
Message was edited by: MarkSKellWell between 2 of my local machines, from Leopard(client) to Tiger(server) you do this
doug-penningtons-power-mac-g4:~ dougp$ ftp 192.168.0.4
Connected to 192.168.0.4.
220 doug-penningtons-ibook.local FTP server (tnftpd 20061217) ready.
Name (192.168.0.4:dougp): dpp
331 Password required for dpp.
Password:
230-
Welcome to Darwin!
230 User dpp logged in.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> cd Documents
250 CWD command successful.
ftp> ls
229 Entering Extended Passive Mode (|||54048|)
200 EPRT command successful.
150 Opening ASCII mode data connection for '/bin/ls'.
total 3
-rw-r--r-- 1 dpp dpp 35382 Aug 16 2008 '72 Topps #33 Billy Martin.JPG
-rw------- 1 dpp dpp 15364 May 10 20:31 .DS_Store
-rw-r--r-- 1 dpp dpp 0 Mar 27 2005 .localized
drwxrwxrwx 4 dpp dpp 136 May 25 2008 All-in-One Data Folder
-rw-r--r-- 1 dpp dpp 253572 Jun 6 2008 Bef&aft:usr:sbin:periodic.png
-rw-r--r-- 1 dpp dpp 31234 May 28 2008 Calcurse.txt
drwxr-xr-x 13 dpp dpp 442 May 5 09:38 DOE 2008 & 2009 misc.
drwxr-xr-x 10 dpp dpp 340 Sep 26 2008 Fishing stuff
drwxr-xr-x 6 dpp dpp 204 Jun 17 2008 My clone stuff
-rw-r--r-- 1 dpp dpp 1803 Nov 20 09:54 Phone Book copy.rtf
-rw-r--r-- 1 dpp dpp 442531 Apr 21 09:41 Safari visual web hist.png
drwxr-xr-x 10 dpp dpp 340 Aug 3 2008 bluetooth info
-rw-r--r-- 1 dpp dpp 418519 Aug 30 2008 curl for firefox download.png
-rw-r--r-- 1 dpp dpp 992 Aug 31 2008 curl ftp list retrieval.txt
drwxr-xr-x 5 dpp dpp 170 Sep 7 2008 ftp commands
drwxr-xr-x 27 dpp dpp 918 Sep 14 2008 links browser manual-0.82-en
drwxr-xr-x 6 dpp dpp 204 Apr 27 2008 netboot data
-rw-r--r-- 1 dpp dpp 2370 Apr 19 19:33 tiger to leo ftp.txt
-rw-r--r-- 1 dpp dpp 1077 Aug 24 2008 wget for a zip file.txt
226 Transfer complete.
ftp> get Calcurse.txt
local: Calcurse.txt remote: Calcurse.txt
200 EPRT command successful.
150 Opening BINARY mode data connection for 'Calcurse.txt' (31234 bytes).
100% |******************************************************************************** ***************| 31234 92.06 KB/s 00:00 ETA
226 Transfer complete.
31234 bytes received in 00:00 (91.38 KB/s)
ftp> put Calcurse.txt
local: Calcurse.txt remote: Calcurse.txt
200 EPRT command successful.
150 Opening BINARY mode data connection for 'Calcurse.txt'.
100% |******************************************************************************** ***************| 31234 25.90 MB/s 00:00 ETA
226 Transfer complete.
31234 bytes sent in 00:00 (399.05 KB/s)
ftp> quit
221-
Data traffic for this session was 62468 bytes in 2 files.
Total traffic for this session was 64945 bytes in 3 transfers.
221 Thank you for using the FTP service on doug-penningtons-ibook.local.
doug-penningtons-power-mac-g4:~ dougp$
and for over the network:
doug-penningtons-power-mac-g4:~ dougp$ ftp ftp://rtfm.mit.edu/pub/usenet/news.answers/computer-security/anonymous-ftp-faq
Connected to PENGUIN-****.mit.edu.
220 (vsFTPd 1.2.2)
331 Please specify the password.
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
200 Switching to Binary mode.
250 Directory successfully changed.
250 Directory successfully changed.
250-Nearly all of the files contained in this directory are copyrighted by
250-their respective authors or maintainers. Even files without explicit
250-copyright notices are copyrighted. Restrictions on copying or
250-redistributing the files vary widely among the files. In particular,
250-quite a number of them prohibit redistribution for any commercial
250-purposes without prior approval; other restrictions may also be made.
250-
250-Such approval must be obtained from the author of each file, not
250-from the maintainers of this archive. If you have any doubts about
250-whether you may copy or use a particular file for a particular
250-purpose, contact its author.
250-
250 Directory successfully changed.
250 Directory successfully changed.
local: anonymous-ftp-faq remote: anonymous-ftp-faq
229 Entering Extended Passive Mode (|||42004|)
150 Opening BINARY mode data connection for anonymous-ftp-faq (28433 bytes).
100% |******************************************************************************** ***************| 28433 63.42 KB/s 00:00 ETA
226 File send OK.
28433 bytes received in 00:00 (62.99 KB/s)
221 Goodbye.
Files will be delivered to your home directory.
Turn on in Leopard SysPref, File Sharing, options, check share files and folders using AFP &FTP and click done. Any other local macs do the same settings, or at least ftp access if not Leo. Also for security: http://www.macworld.com/article/132002/2008/02/mobilemac2503.html and
http://www.macresearch.org/restricted-sftp-mac-os-x-leopard but I guess chroot is possibly iffy
Ftp isn't the best choice. There are hosts that let you send BIG files, there is email, set up Postfix, etc. This long winded post might just give you an idea. -
File selection sequence in the FTP connection for File Sender Adapter
Hi,
I have a file to Proxy scenario using FTP connection parameters.
If there are multiple files in the sender folder, XI picks up the files randomly with no processing sequence.
I want XI to pick up the files based on the date time stamp meaning the oldest file created in the folder should be processes first and rest all in sequence there after.
I know processing sequence can be set for NFS connection but not for FTP .
Please suggest if there's any way to make this work.
Thanks in advance.
Thanks and Regards,
Amit Bhagwat.
Edited by: Amit Bhagwat on Nov 4, 2009 5:17 AMHi
For the Transport Protocol "File Transfer Protocol (FTP)" files are always processed in ascending alphabetical order
If you want the file to be processed in sequence then you can use Quality of Service EOIO in the sender adapter.
The files are processed in the sequence they are picked up.
otherwise use BPM for File Sequencing..
Refer the following Threads
FTP Sender Adapter - Processing Sequence
Processing Sequence issue of FTP protocol
Regards
Abhijit
Edited by: Abhijit Bolakhe on Nov 4, 2009 10:32 AM -
FTP Connection Issues Dreamweaver CS5.5
I can't ftp into the top level directory of any of my hosting accounts with dreamweaver cs5.5
This is becoming a major issue and I'm aware now of other users with the same issue.
First log in to an ftp server works fine - the test case directory is created and deleted - and I think it is this which is causing some odd permissions issue.
Second time you try to log in, the connection is made, but then any directory listing times out. However if I define a directory such as /public_html/images/ then it will connect and display directory listings just fine. Clicking "Test" in the server definition dialog results in an OK message.
If i FTP in using a different FTP Client (in this case Transmit) and upload a single file, the issue goes away, and dreamweaver can again connect - one time only, until I perform this odd "reset".
This happens on all FTP connections across multiple hosting companies (all of the hosting companies my clients sites are stored at).
FTP log is below:
< 257 "/www"
< 220 Welcome to Proweb Server FTP service (JubJub).
> USER winfo
< 331 Please specify the password.
> PASS
< 230 Login successful.
> PWD
< 257 "/"
> CWD /
< 250 Directory successfully changed.
> CWD /www
< 250 Directory successfully changed.
> PWD
< 257 "/www"
Then it waits for a while before giving me the following error message (I've extended timeout to anything up to a couple of minutes, no difference):
Toggling the "USE Passive FTP" checkbox may help you establish a connection. -Select or de-select the checkbox and click Test to tray again.
-if you are connecting using an IPv6 enabled server, please select the "USE IPv6 transfer mode" checkbox in the Advanced site definition dialog.
If the problem persists, check you network settings, including the local firewall settings on your computer, or consult your network administrator.
I have tried PASV checked and unchecked, performance optimisation, and every other combination available to me. I am not connecting through a proxy.
The settings on ALL of my sites worked before the cs5.5 upgrade. The settings on NONE of my sites with a root directory specified work since the upgrade. The only thing that has changed is the move to dreamweaver cs5.5. I can connect with other ftp clients. my ftp server settings are correct. My server and network settings are unchanged. The settings on ALL my sites on other FTP clients continue to work fine.
Am on an i7 2.8GHz Intel iMac running 10.6.7 with 8 gigs of RAM. I have quit all software except dreamweaver and tried running my mac firewall both on and off.
Really running out of ideas, and know of other people with the same issue since the upgrade - what's going on Adobe?!Same for me, in that I had an unreliable and effectively unusable FTP connection with CS5.5 . I've reverted to CS5, because even though I'll miss a couple of the new features I need to have a working connection to the site when working with PHP - because otherwise I can't see my site at all other than via Firefox. I also suspect that at least a couple of times I've had some sort of corruption occur as a result of the FTP hanging. All was okay before CS5.5, and I may have slagged off a different hosting provider than my present one when it was in fact (at least in part) a DW issue. If it isn't fixed in CS6 then CS6 is unusable for me and I'd definitely be happier with 'unenhanced' CS5 FTP functionality. The theoretical performance gains with the CS5.5 implementation are trivial by comparison with the problems. If all else fails, please revert to CS5 code for the FTP side of things.
UPDATE!!!!!!!!!!!!!!!!!!!!!!! This is now fixed for me. The problem was that I did not have a proper web url entered in my site definition for the remote server. I'm not sure how that was placing any limitation on FTP access - after all, the need for a full site definition was removed a couple of software issues ago - but the fact is that with the correct web address entered I have working FTP on CS6 (and seemingly on CS5.5 too). I had a simple forward slash entered for the web address, probably as a result of some earlier investigation of the local server/remote server relationships for file upload on a PHP site. I was running CS5 with the correct Web Url entered, so that was working and the CS5.5, without the correct Web Url, was not. I vaguely remember reading that the Web Url was connected with DWs management of absolute/relative links and not much else, but it seems that is not the case. The new FTP is MUCH faster and I'm a happy guy. Site menu>>>Manage sites>>>[select your site]>>>Edit>>>Servers>>>[2-click your server]>>>Web URL: Put in the full URL e.g. http://www.somesite.com . Not sure if you need a trailing / after, but I have one.
UPDATING AGAIN: Through all of that I had turned on the 'IPv6 protocol' and 'Passive FTP' options in an attempt to get working. The result of that was FTP that worked well once transferring files but often took a while to hook up. Deselecting those, and using CS6, I'm happy with my FTP. -
Transfering .csv file from SAP to NON-SAP using FTP connection
Dear All,
I am able to place the .CSV file successfully to other system using FTP connection, but when i open the file I could see the gaps between each record. I mean 1st line with the 1st record and 2nd line having a GAP and 3rd line with the 2nd record and so ..on as shown below
1 1/1/2009 0 41000027
2 1/1/2009 0 41000027
3 1/1/2009 0 41000027
I have declared an internal table as below
TYPES: BEGIN OF ty_charlist,
line(5000) type c,
END OF ty_charlist.
DATA: w_charlist TYPE ty_charlist,
t_charlist TYPE TABLE OF ty_charlist.
And concatenating each field seperated by ','
CONCATENATE res1 res2 res3 res4 res5 res6 res7 res8 res9 res10 res11 res12 res13 res14 res15 res16 res17 res18 res19 res20 res21 res22 res23 res24 res25 res26 res27 res28 res29 res30 res31 res32 res33 res34 res35 res36 res37 res38 res39
INTO w_charlist-line SEPARATED BY ','.
APPEND w_charlist TO t_charlist.
Now T_CHARLIST contains 50 records which needs to be placed on other system. I can see 50 records but gap is coming
Here res1, res2 and so on are declared as TYPE STRING..
Please do help me this issue
Thanks
PravaHello dprava ,
Try to be assisted with these examples .
1. [http://wiki.sdn.sap.com/wiki/display/ABAP/FTPfiletransferinBackground]
2. [Reg: FTP Connection; - SAP examples programs
Thank you,
Boaz -
Adding a site to a ftp connection
Hi,
Just upgraded to DW CS4 and in doing so I pressed a wrong
button...!
I have numerous sites in my site manager window and one I am
working on has reverted to being nothing more than an ftp
connection. This was my fault as I went back into the set-up window
for the site (edit site) and made it an ftp connection only, rather
than a full site with connections to local folders as well as
remote connections.
Problem is, now on the site manager list the icon has changed
from the folder with the name of the site to the ftp//sitename here
icon and I have no idea how to get it back so I have access to my
local folder.
Any help?
Thanks,
SunsV> Problem is, now on the site manager list the icon has
changed from the folder
> with the name of the site to the ftp//sitename here icon
and I have no idea
> how
> to get it back so I have access to my local folder.
There really isn't any way to go back from that choice.
so- Make a New site definition and pick "site" and not "RDS"
connection.
Alan
Adobe Community Expert, dreamweaver
http://www.adobe.com/communities/experts/ -
Need help to Configure FTPS connection for File Sender Adapter
Hi,
I want to Configure, FTPS connection (Secured Connection) for File Sender Adapter. Could anyone please guide me, what Information I require to configure. I just want to know what Information should I request the team inorder the configure FTPS so that it can be deployed properly.
I have checked with [SAP Help Link|http://help.sap.com/saphelp_nw04/helpdata/EN/e3/94007075cae04f930cc4c034e411e1/content.htm] and while configuring the communication channel found that I need Keystore and the X.509 Certificate and Private Key. which needs to be deployed on the J2EE server by using the Visual Administrator.
Is there anything else, I need to configure.
Any help would be appreciated in this regard.
Thanks & Regards,
Varun.KThe basic things are Certificate/Keys which you already know. Usually it is enough for running a sceanrio.
However, if you have additional requirements, like FTPS for "Connection Security" for encryption, then you may need additional details like commands. Rest all settings are same as FTP.
Regards,
Prateek -
Multiple FTP locations on different drives in Server
I've been working to set up an older Power Mac as a location to back-up my ReadyNAS. The ReadyNAS has an automated function for FTP back-up to an FTP location on my network.
I've put two 1.5TB drives in the OS X server. I have about 1.7TB of data on the ReadyNAS. I had hoped to backup about half of that to each of the drives in the Power Mac Server.
However, I can't figure out how to set up 2 FTP Share Point locations, one on each of the drives, so that I can set the ReadyNAS to back up some of its directories to one drive and other directories to the other.
The data is actually mostly static. Once I do the initial backup the incremental ones (what's changed) will be relatively small.
Does anyone know how to set up multiple FTP share points on different OS X Server drives?
Thank you in advance for any enlightenment.Thank you for the quick response. My problem is how to have the system "know" which backup job it is and switch (without user intervention) to the right Share Point and drive.
I have 6 shares on the NAS with ~760GB and would like to have those backed up to Drive 1. Then when the job starts with the 1 share with 800GB I want that to back up to Drive 2.
That's what I can't figure out how to do automatically. It seems like you have to manually go in and change the Share Point and then manually start the job.
Is there a way to do that in OS X Server without me getting involved?
Thanks again,
BflatBlues -
Our home network has multiple devices connected by iCloud: 2 iMacs, 2 iPhone 4s, 1 MacPro Laptop, and 1 iPad 2. When using Calendar, all the events were
duplicated on my husbands iMac. On his computer, under Calendar accounts, I had included iCloud and also my iCloud ID. I thought that because I had two accounts listed that were connected to iCloud, that might be the cause of the duplication. When I deleted ithe calendars from one of the accounts, it resulted
in deleting all of the events on all of our network devices!
I have since entered some new events into Calendar from my iMac and from my iPhone. These appear correctly on all devices except my husband's iMac where they are again all duplicated.
I have two questions: 1) How can I eliminate the duplicated events on my husband's computer and 2) How do I retrieve the old wiped out Calendar events from
Time Capsule. I don't know how to find Calendar in the Time Capsule. If I find the Calendar information in Time Capsule, how do I transfer it to my current Calendars?
I was obtaining phone help from one of the Apple techs at Apple Support, but our call was disconnected part way through. Didn't know how to reconnect with the tech.
Thanks for any help.The warranty entitles you to complimentary phone support for the first 90 days of ownership.
-
How to provide access to multiple users connected to a Dumb switch? (multi-auth/multi-domain)
Good morning everybody,
I am writing on behalf of not being able to implement a desired outcome in our company network. In fact the situation is as follows:
What I want to do is to be able to authenticate users (802.1x authentication) in our company radius server and authorize them access by having a dynamic VLAN assignment in a multi-user environment on one and the same port of a Cisco 2960 switch. So far, the authentication and authorization has been working completely smoothly (there are no problems with itself). The concept involves the configuration of both DATA and VOICE VLANs as I there is also phone authentication implemented. In order to simulate this environment I introduce a Dumb switch connected to my Cisco 2960 Catalyst.
What I have successfully managed to get to work so far is this:
1) On one switch port I have tried the “authentication host-mode multi-domain” and it worked perfectly for a PC behind a telephone, or with one PC connected to a the dumb switch + the telephone connected to another port of the dumb switch. Logically it is the same situation as there is a separation in two domains – DATA and VOICE. Bellow is an output from show authentication sessions for this scenario.
Interface MAC Address Method Domain Status Session ID
Fa0/23 0021.9b62.b79b dot1x DATA Authz Success C0A8FF69000000F3008E (user1)
Fa0/23 0015.655c.b912 dot1x VOICE Authz Success C0A8FF69000000F9009F (phone)
2) On the other hand, when I try the same scenario with the “authentication host-mode multi-auth”, the switch still separates the traffic in two domains and is able to authenticate all users, AS LONG AS they are in the same VLAN.
show authentication sessions:
Interface MAC Address Method Domain Status Session ID
Fa0/23 0021.9b62.b79b dot1x DATA Authz Success C0A8FF69000000F3008E (user1)
Fa0/23 b888.e3eb.ebac dot1x DATA Authz Success C0A8FF69000000F8008C (user2)
Fa0/23 0015.655c.b912 dot1x VOICE Authz Success C0A8FF69000000F9009F (phone)
However, I cannot succeed authentication of many users from DIFFERENT VLANs, neither in multi-auth nor in multi-domain modes.
What I want to get is an output like this:
Interface MAC Address Method Domain Status Session ID
Fa0/23 0021.9b62.b79b dot1x DATA Authz Success C0A8FF69000000F3008E (user1)
Fa0/23 b888.e3eb.ebac dot1x DATA Authz Success C0A8FF69000000F8008C (user2)
Fa0/23 0015.655c.b912 dot1x VOICE Authz Success C0A8FF69000000F9009F (phone)
I want the switch to authenticate the users anytime they connect to itself and for them to have an instant access to the network. (I tell this because I tried scenario 1) with multi-domain mode and authentication violation replace, and it worked but, two users never had access to the “Internet” simultaneously!!!
The configuration of the interface connected to the Dumb switch is as follows.
interface FastEthernet0/x
description Connection to DUMBswitch
switchport mode access
switchport voice vlan XXX
switchport port-security maximum 10
switchport port-security
switchport port-security violation protect
authentication host-mode multi-auth
authentication priority dot1x
authentication port-control auto
authentication timer reauthenticate 4000
authentication violation replace
dot1x pae authenticator
dot1x timeout tx-period 10
spanning-tree portfast
The way I see it is explained in the following steps:
- PC1 connects to the Dumb switch. This causes the Cisco switch to authenticate user1. This creates an auth. session with its MAC address linked to a domain DATA.
- When PC2 connects to the Dumb switch, this causes the violation replace which replaces the recent authenticated MAC address with the MAC of PC2. I would like it once authenticated to appear in the authentication sessions with a link to a new DATA domain linked to the VLAN assigned from the RADIUS server.
Is this possible? I think (in theory) this is the only way to provide authenticated access to multiple users connecting through Dumb switch to the network.
Has anybody ever succeeded in such a configuration example and if yes, I would be love to get some help in doing so?
Thank you
Stoimen HristovHi Stoimen,
I have done a setup similar to yours with the only exception being VLAN assignment. When I used dACLs only, it makes things somewhat easier as the VLAN no longer matters. Remember that the switchport is in access mode and will only allow a single VLAN across it (with the exception of the voice VLAN). I think that is the real cause of your problem.
From what I can see, you have 2 options available to you:
1) Use dACLs instead of VLAN assignment. This means that an access list will be downloaded from the radius server straight to the authenticated user's session. I have tested this and it works perfectly. Just Google Cisco IBNS quick reference guide and look for the section that deals with Low Impact mode.
2) Get rid of the dumb switches and use managed switches throughout your network. Dumb switches will always be a point of weakness in your network because they have no intelligence to do advanced security features like port security, 802.1x, DHCP snooping, etc.
Hopefully someone else will chime in with another option.
Xavier -
How do I get SQL Agent to perform an FTP connection through a SSIS package?
I have created a number of SSIS packages that I am running through SQL Agent in various jobs. I have set up a Credential / Proxy for the job steps and for the most part everything runs no problem. The issue I have is with the step where I make
a connection to a FTP server and download files. In BIDS the step works fine but in SQL Agent the step times out. I presume that it has to do with the account that it is being run under but that is what I thought the Credential / Proxy was supposed
to handle (as it does for all the other steps). I am running on SQL Server 2008 R2. I have created a test job that has only one step which is to connect to the FTP server and download some text files. I have tried utilizing package configuration
files and have tried various ProtectionLevels to no avail.
Anyone have any thoughts or direction for me to take? Will continue to research and will post if I resolve this.
Thanks, AndrewOn the dev environment the ProtectionLevel is set to EncryptSensitiveWithUserKey and that is what I tried first on the prod server. Subsequently I also tried utilizing a package config file (with ProtectionLevel then of DontSaveSensitive) and have
also tried working with the ServerStorage.
For deployment I copied the relevant dtsx files to a solution on the prod server. I verified that the packages all had tested connections in the Connection Manager. I have run all the packages in the BIDS on the prod server and they all worked.
I have created a test package from scratch on the prod server to test the ftp connection. This test package runs from BIDS fine. I have set the SQL Agent file to access through the file system (no luck) and have saved the package to the SSIS Packages
and had the job step access from there (no luck either). -
Multiple DataBase Connection in a Single Form
hi all
Is it Possible to have Multiple Database Connection With a Single Form
Block a : Retriving data from a database Service a/Schema A.
Block b : Retriving data from a Remote Database Service b / Schema B.
If yes how to do this.
regards
jai
email:[email protected]Sure you can access a database this way,
but can you base a block on this database connect? No you can't.
Frank -
How can I find out the server port for a secured FTP site and creating a FTP Connection Manager
I have to create a FTP Task to go out and get the files that our 3rd party vendor will be dropping on a secured FTP site. I have all the credentials to access that Secured FTP Site and have successfully done so through FileZilla.
Now I need to set-up a FTP Task to go out and get their files and in so doing create a FTP Connection Manager. Is there any way I can determine the
Server Port number from the Secured FTP site? I let it default to 21 and tried the Test Connect and it failed.
Thanks for your review and am hopeful for a reply.Hi ITBobbyP,
SSIS has a built in FTP task, while this only works for the FTP protocol, it doesn’t support SFTP. But there are some free clients like WinSCP and
SSIS SFTP Task Control Flow Component
available in the CodePlex which can invoked from SSIS.
References:
SSIS SFTP Task Control Flow Component approach
WinSCP approach
Thanks,
Katherine Xiong
Katherine Xiong
TechNet Community Support -
FTP connection on mobile device works over wifi but fails over 3G
Hi all,
Hoping someone can help, or has come across this issue.
I am developing a mobile app using flash builder 4.6 with the flex 4.6 sdk. My app needs to transfer files via ftp.
The issue I am experiencing is that the ftp connection establishes and files transfer without a problem when connected via wifi, on both android and ios platforms.
However, when only connecting via a 3G connection on a device, a problem occurs. While I can establish a connection, when I send the USER command, I never receive a response.
A simple view with code to reproduce this issue is listed below. Has anyone come across this problem? I have been searching far and wide but cannot find anything related.
Could this be an issue with Adobe Air or the socket class? I have written equivalent code using the android sdk in eclipse, and a connection to the same server and user details works on both wifi and 3g connections.
Any help would be appreciated.
Thanks.
<?xml version="1.0" encoding="utf-8"?>
<s:View xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" title="HomeView">
<fx:Script>
<![CDATA[
private var commands:Array;
private var s:Socket;
private var data_channel:Socket;
private function connectToFtp():void
var ftp_response:String;
var data_response:String;
var data_channel_ip:String;
var data_channel_port:int;
s = new Socket();
s.addEventListener(Event.CLOSE, closeConnection);
s.addEventListener(Event.CONNECT, connectionMade);
s.addEventListener(IOErrorEvent.IO_ERROR, showError);
s.addEventListener(SecurityErrorEvent.SECURITY_ERROR, showSecError);
s.addEventListener(ProgressEvent.SOCKET_DATA, receiveReply);
s.connect("mydomain.com", 21);
function receiveReply(e:ProgressEvent):void{
ftp_response = s.readUTFBytes(s.bytesAvailable);
trace(ftp_response);
var code:String = ftp_response.substr(0, 3);
if (code == "220")
// connected.
// send user command
s.writeUTFBytes("USER myUserName\n");
s.flush();
else if (code == "331")
// user command sent. password required
// send password
s.writeUTFBytes("PASS myPassword\n");
s.flush();
else if (code == "230")
// login successful
// change directory
s.writeUTFBytes("CWD /fibreSyncFtp/\n");
s.flush();
else if (code == "250")
// change directory successful
// send passive command
s.writeUTFBytes("PASV\n");
s.flush();
else if(code == "227")
//get the ip from the string response
var temp:String = ftp_response.substring(ftp_response.indexOf("(") + 1, ftp_response.indexOf(")"));
var data_channel_temp:Array = temp.split(",");
data_channel_ip = data_channel_temp.slice(0,4).join(".");
//calculate the port number from the last two digits - if this makes no sense, google
// FTP PROTOCOL - there are loads of guides that explain the server responses.
data_channel_port = parseInt(data_channel_temp[4]) * 256 + int(data_channel_temp[5]);
data_channel = new Socket(data_channel_ip, data_channel_port);
data_channel.addEventListener(ProgressEvent.SOCKET_DATA, receiveData);
s.writeUTFBytes("LIST\n");
s.flush();
else if (code == "125")
//use the new IP to open a second socket - this will transmit the data.
// Your first socket will transmit any commands you issue and this new socket will transmit the data
else if (code == "226")
// transfer complete
// close the connection
//s.close();
else if (code == "425")
// can't open connection
function connectionMade(e:Event):void
trace("Connection Made");
function receiveData(e:ProgressEvent):void{
data_response = data_channel.readUTFBytes(data_channel.bytesAvailable);
trace(data_response);
function showError(e:IOErrorEvent):void{
trace(e.text);
function showSecError(e:SecurityErrorEvent):void{
trace(e.text);
function closeConnection(e:Event):void{
trace(e.type);
]]>
</fx:Script>
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<s:Button top="10" label="FTP" click="connectToFtp()" horizontalCenter="0"/>
</s:View>Probably you need to write your own AIR native extension, which uses the native Android sockets..I have the same problem and I'm just starting writing the extension...I guess there is no other way..At least you test with native android socket and you confirm is fine, so we know it should work
-
Background scheduling of FTP Connection through R/3
Hello Friends,
I have done FTP connection by using Z-pgm which uses function FTP_CONNECT. This is working fine in Foreground mode.
But in background scheduling of the z-pgm, i am getting the <b>error as 'RFC to program SAPFTP failed'.</b>
I checked RFC destination SAPFTP in SM59. There Activation type is 'Start on Front End Work Station'. I tested the connection also. Its alright.
How to do FTP processing in Background?
Cheers,
SeemaHello,
you could try to use RFC destination 'SAPFTPA' - it's ftp on the application server. Since SAPFTP is 'Start on Front End Work Station' and in background there is no front end work station, it can't work.
Regards Wolfgang
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