How do I flush the UDP buffers from within LabVIEW?

In order to more effectively utilize UDP based communications, I would like to flush any previous UDP messages from the O/S buffer so that I can start or re-start my LabVIEW application without any "leftovers" still in the system from a previous run. I would like any pointers on ways to do this. I do not see how to do this with the existing LabVIEW elements.
Thanks.
Steve

Good evening,
I think the issue here is that with a UDP connection the
idea is to create a fast half-duplex connection between a server and a
client. If the client does not have a
socket open, an error is generated and no datagram is buffered. Therefore there should be no “junk” packets
of information in a port buffer to clear.
In addition I believe that the UDP read can never read more than one
packet worth of data – further illustrating that there really is no UDP buffer
that is set up in your OS to clear.
Thanks for posting -- hopefully this helps. Please let us know if anyone has any other
questions!
Regards,
Travis M
Applications Engineer
National Instruments
Travis M
LabVIEW R&D
National Instruments

Similar Messages

How can i get the all values from the Property file to Hashtable?

how can i get the all values from the Property file to Hashtable?
ok,consider my property file name is pro.PROPERTIES
and it contain
8326=sun developer
4306=sun java developer
3943=java developer
how can i get the all keys & values from the pro.PROPERTIES to hashtable
plz help guys..............

The Properties class is already a subclass of Hashtable. So if you have a Properties object, you already have a Hashtable. So all you need to do is the first part of that:Properties props = new Properties();
InputStream is = new FileInputStream("tivoli.properties");
props.load(is);

How can we remove the following zeros from quantity field ?

Hi All.
how can we remove the following zeros from quantity field while populating ALV by using FM REUSE_ALV_GRID_DISPLAY ?
eg:getting output zqty = 2.000
but i need           zqty = 2.
help me to reslove this issue.
Regards.
jay

Hi,
While populating the field catlog do the following thing to   avoid zeros.
wa_fieldcat-tabname = 'I_OUTPUT'.    " Curr
wa_fieldcat-fieldname = 'FWAER'.
wa_fieldcat-seltext_l = text-023.
wa_fieldcat-no_zero = 'X'.
APPEND wa_fieldcat TO i_fieldcat.
CLEAR wa_fieldcat.
Thanks,
Khushbu.

I've a new account on iMac. When composing an email the contact list does not show up on the bar. WWhen I start keying in a name, it comes up with the address. How do I engage the contact list from the email?

I've a new account on iMac. When composing an email the contact list does not show up on the bar, which would allow me to select the persons I want to include on the distribution of the email. When I start keying in a name in the email, it comes up with the person's address, which shows it is synced. How do I engage the contact list from the email like I do on my old account (where a contact list icon shows up, along with the "attach" and other icons) ?

With the New Message window open, go to the View menu and select "Customize Toolbar...".
In the screen that opens, drag the item labelled "Address" into the Toolbar area of the New Message window, then click the "Done" button.
That item should be then added to the Toolbar for the New Message window.
Note that the main Mail window and the New Message window (as well as the separate message window if you open a message that way) use different toolbars - the settings/inclusions for one do not carry over to another.

Recently, U2 music appeared on my ipod without my requesting it or wanting it. I was able to delete all of the songs except for one. How do I delete the last one from my ipod? The song does not show up in iTunes when I plug my ipod into the computer.

Recently, U2 music appeared on my ipod without my requesting it or wanting it. I was able to delete all of the songs except for one. How do I delete the last one from my ipod? The song does not show up in iTunes when I plug my ipod into the computer. The version installed on my ipod is 7.1.2(11D257).

Hi donfrommars,
Welcome to the Apple Support Communities!
Please use the following article for information and instruction on deleting the U2 album from your devices and account.
Remove iTunes gift album "Songs of Innocence" from your iTunes music library and purchases
Have a great day,
Joe

How can I get the "text" field from the actionEvent.getSource() ?

I have some sample code:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.ArrayList;
public class JFrameTester{
     public static void main( String[] args ) {
          JFrame f = new JFrame("JFrame");
          f.setSize( 500, 500 );
          ArrayList < JButton > buttonsArr = new ArrayList < JButton > ();
          buttonsArr.add( new JButton( "first" ) );
          buttonsArr.add( new JButton( "second" ) );
          buttonsArr.add( new JButton( "third" ) );
          MyListener myListener = new MyListener();
          ( (JButton) buttonsArr.get( 0 ) ).addActionListener( myListener );
          ( (JButton) buttonsArr.get( 1 ) ).addActionListener( myListener );
          ( (JButton) buttonsArr.get( 2 ) ).addActionListener( myListener );
          JPanel panel = new JPanel();
          panel.add( buttonsArr.get( 0 ) );
          panel.add( buttonsArr.get( 1 ) );
          panel.add( buttonsArr.get( 2 ) );
          f.getContentPane().add( BorderLayout.CENTER, panel );
          f.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
          f.setVisible( true );
     public static class MyListener implements ActionListener{
          public MyListener() {}
          public void actionPerformed( ActionEvent e ) {
               System.out.println( "hi!! " + e.getSource() );
               // I need to know a title of the button (which was clicked)...
}The output of the code is something like this:
hi! javax.swing.JButton[,140,5,60x25,alignmentX=0.0,alignmentY=0.5,
border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@1ebcda2d,
flags=296,maximumSize=,minimumSize=,preferredSize=,defaultIcon=,disabledIcon=,
disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=2,left=14,bottom=2,
right=14],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=true,
rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=first,defaultCapable=true]
I need this: "first" (from this part: "text=first" of the output above).
Does anyone know how can I get the "text" field from the e.getSource() ?

System.out.println( "hi!! " + ( (JButton) e.getSource() ).getText() );I think the problem is solved..If your need is to know the text of the button, yes.
In a real-world application, no.
In a RW application, a typical need is merely to know the "logical role" of the button (i.e., the button that validates the form, regardless of whether its text is "OK" or "Save", "Go",...). Text tends to vary much more than the structure of the UI over time.
In this case you can get the source's name (+getName()+), which will be the name that you've set to the button at UI construction time. Or you can compare the source for equality with either button ( +if evt.getSource()==okButton) {...}+ ).
All in all, I think the best solution is: don't use the same ActionListener for more than one action (+i.e.+ don't add the same ActionListener to all your buttons, which leads to a big if-then-else series in your actionPerformed() ).
Eventually, if you're listening to a single button's actions, whose text change over time (e.g. "pause"/"resume" in a VCR bar), I still think it's a bad idea to rely on the text of the button - instead, this text corresponds to a logical state (resp. playing/paused), it is more maintainable to base your logic on the state - which is more resilient to the evolutions of the UI (e.g. if you happen to use 2 toggle buttons instead of one single play/pause button).

How can i get the max rpm from cpu fan??

how can i get the max rpm from my cpu cooler regarding that i don't have a speed controller attached to the cpu fan ,,, ?? please make things clear for me
thanks

if you have not reduced it by using a speed controller either hardware or software or by the 7v mod its already going as fast as it will at 12 v dc you cannot speed it up only slow it down
need more air get a different cooler/fan

How can I get the edited pictures from the thumbnails to full size?

I upgraded to iPhoto 11, the thumbnail photos show my previous edits, but when I click on the photo to make it bigger, it reverts back to the unedited, original picture. How can I get the edited pictures from the thumbnails to full size?

Verify you are using iPhoto11 ver 9.5
if not run the >Software update or check your apps folder and make sure the correct iPhoto is launched, not an older ver.

How can I get the XML structure from a flat structure?

Hi all,
in my XI SP 12 I use a JMS adapter to read information using the WebSphereMQ transport protocol.
The structure that I receive have this format:
<Name_A.KeyFieldValue><Name_A.fieldName_A1_Value>...<Name_A.fieldName_AN_Value>
<NumberRecordType_B><NumberRecordType_c>
<Name_B.KeyFieldValue><Name_B.fieldName_B1_Value>...<Name_B.fieldName_BN_Value>
<Name_B.KeyFieldValue><Name_B.fieldName_B1_Value>...<Name_B.fieldName_BN_Value>
<Name_C.KeyFieldValue><Name_C.fieldName_C1_Value>...<Name_C.fieldName_CN_Value>
<Name_C.KeyFieldValue><Name_C.fieldName_C1_Value>...<Name_C.fieldName_CN_Value>
the problem is that in this structure each line is not separated by a carriage return or a comma, I have all the information in a single line:
<Name_A.KeyFieldValue><Name_A.fieldName_A1_Value>...<Name_A.fieldName_AN_Value><NumberRecordType_B><NumberRecordType_c><Name_B.KeyFieldValue><Name_B.fieldName_B1_Value>...<Name_B.fieldName_BN_Value>...<Name_B.KeyFieldValue><Name_B.fieldName_B1_Value>...<Name_B.fieldName_BN_Value><Name_C.KeyFieldValue><Name_C.fieldName_C1_Value>...<Name_C.fieldName_CN_Value>...<Name_C.KeyFieldValue><Name_C.fieldName_C1_Value>...<Name_C.fieldName_CN_Value>
and the customer don't want to insert a line separator.
Then, the question is:
How can I get the XML structure from this structure?
If possible, I don't want to develop new Module and add it in the JMS Module Sequence.
PS I have already read the article "How to Use the Content Conversion Module with the XI 3 J2EE JMS Adapter.pdf" and it doesn't seem to help me.
Best Regards,
Paolo

To get context parameters from your web.xml file you can simply get the ActionServlet object from an implementing action object class. In the perform (or execute) method make the following call.
ServletContext context = getServlet().getServletContext();
String tempContextVar =
context.getInitParameter("<your context param >");

How can i get the source code from java concurrent program in R12

Hi 2 all,
How can i get the source code from java concurrent program in R12? like , "AP Turnover Report" is java concurrent program, i need to get its source code to know its logic. how can i get its source code not the XML template?
Regards,
Zulqarnain

user570667 wrote:
Hi 2 all,
How can i get the source code from java concurrent program in R12? like , "AP Turnover Report" is java concurrent program, i need to get its source code to know its logic. how can i get its source code not the XML template?
Regards,
ZulqarnainDid you see old threads for similar topic/discussion? -- https://forums.oracle.com/forums/search.jspa?threadID=&q=Java+AND+Concurrent+AND+Source+AND+Code&objID=c3&dateRange=all&userID=&numResults=15&rankBy=10001
Thanks,
Hussein

How can I restore the game data from an old ipod touch to a new one?

How can I restore the game data from an old ipod touch to a new one?

Restore it from the backup of the old ipod.

How can I browse the Adobe Market from my browser in stead of the tiny app display functionality?

How can I browse the Adobe Market from my browser in stead of the tiny app display functionality?

Hi,
Can you please go through the following past forum posting: http://forums.adobe.com/message/4620312
Hope that the info helps.
With regards,
Prabhu

How can I display the HTML page from servlet which is called by an applet

How can I display the HTML page from servlet which is called by an
applet using the doPost method. If I print the response i can able to see the html document. How I can display it in the browser.
I am calling my struts action class from the applet. I want to show the response in the same browser.
Code samples will be appreciated.

hi
I got one way for this .
call a javascript in showDocument() to submit the form

I have converted a pdf to word. How can I access the Word file from my online account?

I have converted a pdf to word. How can I access the Word file from my online account? When it says 'download the converted file' I choose a location on my PC and click, but nothing happens. It seems that it can only save the converted file to my online account. I went to my online account but I see no way to look for the file

Hey Fabrizio,
You might need to sign up at "https://cloud.acrobat.com/exportpdf" using your Adobe ID credentials to convert your PDF file to Word.
Do you get the 'download' prompt?
Also, you can find the converted files by clicking at the 'Files' tab.
Please try the same using a different browser and check.
Hope to hear from you.
Regards,
Anubha

I have 528 contacts on my phone, but only 290 on my Icloud how can i move the rest over from my phone to my Icloud nothing is working

I have 528 contacts on my phone, but only 290 on my Icloud how can i move the rest over from my phone to my Icloud nothing is working

Go to Settings>iCloud, turn Contacts to Off, choose Delete from My iPhone when prompted (they will still be in iCloud).
Download the app My Contacts Backup to your phone. Use this app to backup the remaining contacts on your phone (from your exchange account) as a vCard attachment to an email that you send to yourself. Confirm that you have received the email on your phone.
Go to Settings>iCloud and turn Contacts back to On.
Go to Settings>Mail,Contacts,Calendars>Default Account (in the Contacts section), set this to iCloud. (This will cause new contacts added to your phone to be added to the iCloud account.)
Go to Settings>Mail,Contacts,Calendars...tap your exchange account and turn off contacts syncing (otherwise you will end up with duplicates on your phone).
Open the My Contacts Backup email and tap the attachment to import the contacts from your exchange account back to your phone. They will be added to iCloud and appear on icloud.com and any other devices syncing contacts with your account.

How do I flush the UDP buffers from within LabVIEW?

Similar Messages

Maybe you are looking for