How do I monitor a TCP/IP connection if my data does not come perdiodically?

I have an application that connects to several acquisition devices where I get TCP packet data only when something changes. If the line gets cut, how can I monitor this so that the user of the application will know that no data will come from that certain acquisition device? Since the data does not come periodically, I cannot monitor the error from the TCP read function, i.e. Error 56 - Timeout.
Is there a way to find out if an IP exists for example? (Such as a ping but it shoudl be fast)
Thanks

arikb-
You can use the System Exec.vi to run a ping command through the command line and see if it is responding. You could also program the client such that it responds to a simple command with a verification message at any time. This would be similar to sending a ping, but it will also let you know if your LabVIEW program is on the other listening on the correct port.
Xaq

Similar Messages

Just got fcp, how do mute the sound on the video clip so it does not come through the audio track?

just got fcp, how do mute the sound on the video clip so it does not come through the audio track?
Please help

Don't edit the audio into the timeline. Or pull the audio level down to zero in the inspector or on the audio waveform in the timeline.

HT4157 Cellular data does not come up as an option in settings. How can I add?

I am trying to add my AT & T wireless account but I do not have that as an option in Settings. How do I add?

Have a look at this:
http://en.wikipedia.org/wiki/MiFi

I-Pad Mini and Wi-Fi Connection-I-Pad Mini does not connect to the Wi-Fi while IPad and IPhone 5 works in the same location. Then when I go to another location the Ipad Mini works. How can I get Wi-Fi to work all the time like Ipad and Iphone 5?

I-Pad Mini and Wi-Fi Connection. At one location the I-Pad Mini will not connect to wi-fi, while I-Pad and I-Phone 5 works just fine.
Then at another location the I-Pad Mini works just fine. Are there any suggestions anyone can give me to get I-Pad Mini to work everywhere just like I-Pad and I-Phone 5?

Some things to try first:
1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
3. Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
4. Go into your router security settings and change from WEP to WPA with AES.
5. Renew IP Address: (especially if you are droping internet connection)
    •    Launch Settings app
    •    Tap on Wi-Fi
    •    Tap on the blue arrow of the Wi-Fi network that you connect to from the list
    •    In the window that opens, tap on the Renew Lease button
~~~~~~~~~~~~~~~~~~~~~~~~~
iOS 6 Wifi Problems/Fixes
Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

HT201263 When I connect to itunes it does not appear in the devices..please help me ........how...its URGENT...

When I connect to itunes it does not appear in the devices..please help me ........how...its URGENT...

Here:
iOS: Device not recognized in iTunes for Windows
or
iPhone, iPad, iPod touch: Device not recognized in iTunes for Mac OS X

How can I get my iPhone to show up on the panel to the right iTunes? I keep connecting it but it does not work.

How can I get my iPhone to show up on the panel to the right iTunes? I keep connecting it but it does not work.

http://support.apple.com/kb/TS1538

How do I monitor Total number of calendars, events, and reminders to not exceed 25,000?

how do I monitor Total number of calendars, events, and reminders to not exceed 25,000?

mposoff,
iCloud: Troubleshooting iCloud Calendar - Apple Support describes, among others, how to make copies of your calendar data. After completing a backup of your calendar data:
1. Open the Calendars Folder in your ~Library Folder, and move any any files with "Cache" listed in the name field to your Desktop.
2. Open the Preferences Folder in the ~Library Folder and move the com.apple.iCal.plist file to the Desktop.
3. Log out/in or restart and open Calendar.
If those three steps not successful, go back to iCloud: Troubleshooting iCloud Calendar - Apple Support and follow the appropriate steps in order.

Can't Create a Data Source - Failed to test connection. [DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied

Hi there,
I am having a serious issue with The Power BI Data Management Gateway which I am hoping that someone can help me with.
Basically I am setting a connection between a Power BI demo site and a SQL 2012 Database based on Azure. The Data Management Gateway and is up and running, and Power BI has managed to connect to it successfuly.
By following the tutorials at
here I was able to successful create my Data Connection Gateway with a self-signed certificate.
However, when trying to create the data source I come into problems. The Data Source Manager manages to successfully resolve the hostname, as per the screenshot below:
Bear in mind that I exposed the require ports in Azure as endpoints and I managed to modify my hosts file on my local machine so I could access the SQL server hosted in Azure using its internal name -- otherwise I would not be able to get this far.
However the creation of the data source also fails when trying to created it whilst logged in the SQL server in question:
The Data Source Manager returns the error when using the Microsoft OLE DB Provider for SQL Server:
Failed to test connection. [DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied
I tried using the SQL Server Native Client 11.0 instead but I also get an error. This time the error is:
Failed to test connection. Login timeout expiredA network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online.Named Pipes Provider: Could not open a connection to SQL Server [53].
Some considerations
If I provide an invalid username/password, the Data Source Manager does say that the username and password is incorrect.
Firewall is turned off in the SQL Server (either way, this error also happens if I try top use the Data Source Manager whilst logged in the SQL Server itself).
SQL Profiler does not show any attempt of connection.
The SQL server instance in question is the default one.
The error happens regardless if I select the option to encrypt connection or not.
In SQL Configuration manager I can see that all protocols are enabled (TCP/IP, Named Pipes and Shared Memory.
The Event Viewer does not provide any further errors than the one I have copied in this post.
I'm at a loss here. Could someone please advise what might I be doing wrong?
Regards,
P.

Here is what I had to do to solve this issue:
Basically I had to add the MSSQL TCP/IP port as an end-point in Azure. After I did that, then I was able to create the data-source. However, I was only able to authenticate with a SQL account, as any domain account would return me an error saying that the
domain isn't trusted.
What puzzles me here is how come the Data Source Manager would inform me that an account username/password was invalid, but it would fail/timeout if I provided valid credentials (!?!?!!?)

I get wireless connection but my internet does not work on my ipad 2

I get wireless connection but my internet does not work on my ipad 2

Some things to try first:
1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
3. Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
4. Go into your router security settings and change from WEP to WPA with AES.
5. Renew IP Address: (especially if you are droping internet connection)
    •    Launch Settings app
    •    Tap on Wi-Fi
    •    Tap on the blue arrow of the Wi-Fi network that you connect to from the list
    •    In the window that opens, tap on the Renew Lease button
~~~~~~~~~~~~~~~~~~~~~~~~~
iOS 6 Wifi Problems/Fixes
Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

Pc does not come out of sleep mode, no display on monitor, no response from mouse or keyboard.

Computer acts as though it is in sleep mode, does not respond to keyboard or mouse input. Confirmed monitor is OK. turning power on and of does not fix this issue. any ideas on how this migt be fixed?

The key issue is power. Please use this guide to test the PSU.
I am a volunteer. I am not an HP employee.
To say THANK YOU, press the "thumbs up symbol" to render a KUDO. Please click Accept as Solution, if your problem is solved. You can render both Solution and KUDO.
The Law of Effect states that positive reinforcement increases the probability of a behavior being repeated. (B.F.Skinner). You toss me KUDO and/or Solution, and I perform better.
(2) HP DV7t i7 3160QM 2.3Ghz 8GB
HP m9200t E8400,Win7 Pro 32 bit. 4GB RAM, ASUS 550Ti 2GB, Rosewill 630W. 1T HD SATA 3Gb/s
Custom Asus P8P67, I7-2600k, 16GB RAM, WIN7 Pro 64bit, EVGA GTX660 2GB, 750W OCZ, 1T HD SATA 6Gb/s
Custom Asus P8Z77, I7-3770k, 16GB RAM, WIN7 Pro 64bit, EVGA GTX670 2GB, 750W OCZ, 1T HD SATA 6Gb/s
Both Customs use Rosewill Blackhawk case.
Printer -- HP OfficeJet Pro 8600 Plus

My daughter forgot her password and now her ipod touch is disabled. When I connect it to itunes it does not come up on the screen as a device. What can I do to get her itouch working again?

My daughter forget her password and now her ipod touch is disabled. Red message says to connect to itunes. When I do connect to itunes, the device is not recognized and then a message comes on the screen that says it is locked and to enter the password to access it. I cannot access the password and since itunes does not recognize the device, it does not come up on the list on the left, i cannot reset it. What do I need to do so she can use her ipod touch again? Thanks

Place the iOS device in Recovery Mode and then connect to your computer and restore via iTunes. The iPod will be erased.
iOS: Wrong passcode results in red disabled screen
If recovery mode does not work try DFU mode.
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings

Have most recent macbook pro connected to thunderbolt via thunderbolt cable. Occasionally when I close my laptop the thunderbolt display goes black and does not come back on---even in response to keyboard. Help

Have most recent macbook pro connected to thunderbolt via thunderbolt cable. Occasionally when I close my laptop the thunderbolt display goes black and does not come back on---even in response to keyboard. Help

Hello QuinnDev,
Thank you for posting in the Apple Support Communities. It sounds like you are trying to use your MacBook Pro with a Thunderbolt Display in closed clamshell mode (MacBook Pro closed), but sometimes the display doesn't stay on. I found an article that talks about closed clamshell mode. You would have to fulfill the following requirements to use your display this way:
Requirements for closed display mode:
Power adapter
External keyboard, mouse, or trackpad
External display
You can find all the steps and the full article here:
Mac notebooks: How to use your computer in closed clamshell (display closed) mode with an external display
http://support.apple.com/kb/HT3131
I hope this helps!
All the best,
Sheila M.

How do I get twitter installed on my iPad when it does not have iOS 5.0?

How do I get twitter installed on my iPad when it does not have iOS 5.0? How can I upgrade my iPad?

If you have an iPad 1, the max iOS is 5.1.1. For newer iPads, the current iOS is 6.1. The Settings>General>Software Update only appears if you have iOS 5.0 or higher currently installed.
iOS 4: Updating your device to iOS 5 or Later
http://support.apple.com/kb/HT4972
How to install iOS 6
http://www.macworld.com/article/2010061/hands-on-with-ios-6-installation.html
iOS: How to update your iPhone, iPad, or iPod touch
http://support.apple.com/kb/HT4623
If you are currently running an iOS lower than 5.0, connect the iPad to the computer, open iTunes. Then select the iPad under the Devices heading on the left, click on the Summary tab and then click on Check for Update.
Tip - If connected to your computer, you may need to disable your firewall and anitvirus software temporarily. Then download and install the iOS update. Be sure and backup your iPad before the iOS update. After you update an iPad (except iPad 1) to iOS 6.x, the next update can be installed via wifi (i.e., not connected to your computer).
 Cheers, Tom

[DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied.

I using SQL 2000 on Server 2012 in named instance. when i connect locally, it's ok, but when try to connect from network it generates error [DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied.

Hi Sayed Abdul Latif,
As other post, SQL Server 2000 was out of support since April,2013. You can try to install SQL Server 2005 or later version. In addition, since the issue regards SQL Server Data Access. I will help you post the question in the related forums. It is appropriate
and more experts will assist you.
According to your description, you can only connect to SQL Server locally, I recommend you check if the TCP/IP and Named Pipes are enabled in SQL Server Configuration Manager. And the SQL Server is set to allow remote connection. Then restart the SQL Service
and check if you can connect to SQL Server remotely.
Additionally, we also need to verify if the SQL Server named instance is in a cluster, and connect to it by using the "servername\instancename" syntax, then you receive the above error message. If yes, you have to hardcode the TCP port or the Named Pipe
of the SQL Server named instance. For more information, you can review the following article.http://support.microsoft.com/kb/888228/en-us
Thanks,
Sofiya Li
Sofiya Li
TechNet Community Support

Logon Error:[DBNETLIB][ConnectionOpen(Connect()).]SQL Server does not exist

Hi,
Getting following error while trying to connect MySQL server to the MDM Import manager.
logon Error:[DBNETLIB][ConnectionOpen(Connect()).]SQL Server does not exist or access denied
i have supplied the following paramter values.
Type : SQL server
Remote System : MDM
DBMS server : localhost
Database Name : testing
user: < MySQL user name>
password : < MySQL password>
pls let me know how can i solve this problem.
thanks

Refer the blog
/people/rupesh.kumar4/blog/2008/08/20/how-to-integrate-mdm-with-mysql-server-50
thanks
Rupesh

How do I monitor a TCP/IP connection if my data does not come perdiodically?

Similar Messages

Maybe you are looking for