Stop listening tcp and tcp read

Similar Questions

• TCP Read blocks remote Port

  Hello

  I want to read a string of NMEA (1 Hz update rate) of a server. The original NMEA (series, 4800 baud rate) is converted by a MOXA to TCP.

  Here is my minimum program, I normally have a timer "wait until 1000ms" inside.

  

  The problem is that the MOXA closes its other port every minute. I can still read, but everyone else is blocked.

  Other Terminal programs work. The network guy told me that he sees a lot of traffic from my address and he thinks that, at some point, the MOXA is confused and shut its ports.

  Is there a possibility that read TCP sends a string of status or failure?

  azavarsky wrote:

  Hello

  I want to read a string of NMEA (1 Hz update rate) of a server. The original NMEA (series, 4800 baud rate) is converted by a MOXA to TCP.

  Here is my minimum program, I normally have a timer "wait until 1000ms" inside.

  

  The problem is that the MOXA closes its other port every minute. I can still read, but everyone else is blocked.

  Other Terminal programs work. The network guy told me that he sees a lot of traffic from my address and he thinks that, at some point, the MOXA is confused and shut its ports.

  Is there a possibility that read TCP sends a string of status or failure?

  How fast this device sends its strings? -What is simply spit data without any query command to be sent? If so your Moxa can be a problem too, because he doesn't know what to do with the data if there is no client connected to read. Also your Moxa converter can struggle to serve more than one client TCP on port even anyway. What should you do if several clients try to access the same port? Send the same message to everyone? Or send the incoming message randomly to one of them?

  Do you get your TCP read once errors Moxa "closes" the port as you say? If so you should terminate your loop on any error except maybe a timeout error and reopen the port in a second outer loop until your program wants out. Your loop never stopping on the errors will prevent the close TCP to run that will keep open socket and prevent the Moxa to see good handshake that the connection has been properly closed by the customer, which will probably prevent the Moxa device able to accept new connections. Network communication can be tricky and one of the first things you have to learn is the appropriate error handling. No matter what mistake anywhere in the network connection, usually error timeout on reading, with the exception should be managed by closing the connection and tries to reconnect.

• LabView TCP read

  Hello

  I'm reading the data from a personal weather station which is transmittng data to a web site using a bridge.  I can see the data transmitted with WireShark, so I know the bridge works and the data is there.  Also the data are learning web site.

  I want to read that data, using LabView, it is sent to the web site.

  I tried the TCP connection open with the TCP Read function and also the TCP Listen.vi with the TCP Read function without success.

  I have attaced the two screws and also a page of WireShark.

  A question I have is how do I know what port to monitor?  It continues to change in WireShark?

  Any help is appreciated.

  Perry

  TCP in LV functions are not sniff the functions. They are used for the direct connection from point to point.

  If the web site supports getting data back, you can try to contact and to read the data in (probably use the HTTP or web service screws, according to the API provides the site).

  Otherwise, you could try to imitate the BT site and having the unit send you data, but probably the address of the site is hard coded into the device. You could probably play with it to feign a DNS server which will redirect to your computer, but you should always know what the API to send data on the site.

  A third option is to do the desired sniffing. LV has no functions for this, but you can find wrappers that people wrote for WinPCap, that might do what you want. I've never used, so I don't know.

• How fast can get a TCP read?

  LV 2009 + WIN 7 with 6 GB of Ram.

  I acquire two analog channels as a word of 16 bits each and adding a CRLF at the end example: 1234 567 \r\n

  These data are acquired to 50ms intervals and sent over a link WiFi for my notebook running code LV.

  I know not how fast the "TCP - Read" function can work and which mode (it has four options) to choose if I do not miss any incoming data...

  Now I get some data in French - initially rather quickly and after a few seconds, it slows down the consdierably. I'm running the TCP-read inside a timed loop and I tried various intervals from 10 ms to 500ms. The largest value works OK, but I need the fastest possible. Tips how to handle this?

  My code is attached. (The passage DIO works very well)

  Even if the passage DIO works, it doesn't make sense to use a sequence structure.  It would be better to change the Standard mode and the 100ms Timeout value instead of "wait for next"millisecond"Multiple" as leading to uneven wait times.

  TCP Read should run very quickly, subject to any waiting period that you set.  You should never lose data in any mode, although there is a possibility to receive a partial when you use Standard mode or immediate (unlikely in your case since you read so little data).  The operating system will be buffering of data not read for you.  If you want the fastest possible exchange, divide your code in two while loops, one for EID and the other for the series.  Serial communication can be simply a normal life while loop, with the reading of TCP dictate the timing.  Set a long timeout in buffer mode and the loop will run as quickly as it receives data.

  Also, when the loop ends, you must close TCP connections, not just one of them.

• Writing TCP TCP read of the same VI.

  Hello

  I want to write data to a c program and also read data from it just after grace to a TCP connection. How can I implement both options in a single VI.

  I send you pictures of pixels values - program, then technology will send the berries to me. I made a suggestion, but I don't know if it is correct or not.

  The VI is downloaded and shown in the image below

  

  Yes, you can read and write to the same connection. Why would it be possible? I do not understand why you ask the question. Did you try and have a problem? If you don't try it, you might at least have opened one of the many TCP examples delivered with LabVIEW and illustrate this, you have not even need to write new code to see. If you have a problem, then ask for it specifically on this issue.

• I pay to match iTunes and I can stop listening to the radio. Apple keeps prompting me to pay for music from Apple. Why? Radio without advertising is included with iTunes game! It was listed as a feature in my terms of service I renewed for 1 year in Octob

  I pay to match iTunes and I can stop listening to the radio. Apple keeps prompting me to pay for music from Apple. Why? Radio without advertising is included with iTunes game! It was listed as a feature in my terms of service I renewed for 1 year in October

  iTunes Radio is no longer included in iTunes game. These same terms of service as Apple status may change the features included at any time.

  http://www.Apple.com/legal/Internet-services/iTunes/us/terms.html

  You can try calling Apple Service customer. People have reported that they were able to cancel iTunes game and get a pro-rated refund.

• TCP read bytes to read

  Hello! I have a small question on ports TCP read palett in labview, im trying to send 1 bit from a server to a client. This works when I put 4 digital in the bytes to read TCP entry read client-side. But when I change the value to 1, as it should be efficiant, this work dosent. Any ideas?

  Your number of bytes value is a number of I32 (32 bits, or 4 bytes), so you send 4 bytes followed by 1 byte for the boolean itself.   You can convert the number of bytes in an I8 to make a byte (but I wouldn't bother because the IP header information is the number of bytes, which means 1 to 4 bytes means little).

• interpretation of TCP read the output string

  What is the right method to interpret the data from the TCP Read function? The output is a string of characters, which are obviously not hexadecimal values. How can I convert the string to a binary table or bytes?

  OK, time wild guess...

  The first four bytes are an indication for SYNCHRONIZATION

  The four bytes 0 4 0 0 is a 32-bit integer, GIS bytes less first. 1024

  Then you have 6 0 0 0, which could be another 32-bit integer, lsb first. 6

  Then your random data

  Rod.

• Windows Control Panel has stopped working and cannot read the CD

  Original title: windows control panel has stopped working

  When I went to install my Rosetta Stone program it showed Windows has stopped working and then installed the program and when I put the cd in my computer saids windows control panel has stopped working and cannot read the cd

  Hello

  You say "Control Panel has stopped working" or "Windows Explorer has stopped working"?

  Follow the steps mentioned in the article below and check if that helps:

  Start the computer in a clean boot state

  Start your computer in a clean boot state, and check if your computer is able to read the CD. Start your computer in a clean boot state helps determine if third-party applications or startup items are causing the problem. If so, you need to maybe contact the manufacturer of the program for updates or uninstall and reinstall the program.

  See the following article in the Microsoft KB for more information on how to solve a problem by performing a clean boot in Windows Vista or Windows 7:

  How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7

  http://support.Microsoft.com/kb/929135

  Note: After troubleshooting, be sure to set the computer to start as usual as mentioned in step 7 in the above article.

  Aziz Nadeem - Microsoft Support

  [If this post was helpful, please click the button "Vote as helpful" (green triangle). If it can help solve your problem, click on the button 'Propose as answer' or 'mark as answer '. [By proposing / marking a post as answer or useful you help others find the answer more quickly.]

• Stop listener as part of the transition to the DataGuard?

  I have a database of primary and Standby, configured with DataGuard. A third server runs the process of observation to monitor from the database when the principal becomes unavailable. It all works and we are happy with it from the point of the DB of the things. The database version is 11.2.0.4 running on RedHat 6.4

  The demand side, we use WebLogic and have set up the connection string of JDBC using the following format:

  (DESCRIPTION=(ADDRESS_LIST=(FAILOVER=ON)(LOAD_BALANCE=OFF)(ADDRESS=(PROTOCOL=TCP)(HOST=production-db-a)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=production-db-b)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=abc)))

  When the primary database server is stopped, then the observer notices and will be a change occurs and just continues to work.

  However, what's happened is that there are delays in network that caused the observer make the pass on the eve (production-db-b) and makes it the main. What is expected (except for wait times of network that is under review). Finally, the network problem disappeared and the original primary server (production-db-a) is back on the network and he opted to be a watch. So far so good. If all goes well on the side of the things database. However, on the side of the demand of the things, the application attempts to connect to production-db-a, since it is now available again, but service is on production-db-b because he has fallen.

  If we move off the coast of the production-db-a listener, then all is good again. We have configured listeners, LISTENER to database service and LISTENER_DGMGRL for dataguard that runs on port 1522. So just stop LISTENER while LISTENER_DGMGRL running on production-db-a seems to fix the problem.

  The question is now, peut LISTENER stop automatically DataGuard during the passage of the day before and started for the primary, or is there another solution for this problem?

  Your tnsnames.ora connection string refers to

  (CONNECT_DATA = (SERVICE_NAME = abc))

  What is the deault for the database service? If so, do not use it. On the contrary, create another service with and start it by calling DBMS_SERVICE. START_SERVICE in a trigger to start (or after triggering change in role) which checks if the database is currently a primary or secondary.

• After changing the port (1521 to 1525 in listener.ora and tnsnames.ora) OEM: the database is down

  Hello

  I'm installing Oracle Database 11 g 2 (11.2.0.4) on Oracle Linux 7.1.

  In short, what I'm trying to do now is changing the default port of 1521 to 1525.

  So I stopped the listener (lsnrctl stop) and then changed my listener.ora and tnsnames.ora:

  Listener.ora

  listener.ora # Network Configuration file: /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora

  # Generated by Oracle configuration tools.

  LISTENER =

  (DESCRIPTION_LIST =

  (DESCRIPTION =

  (ADDRESS = (PROTOCOL = CIP)(KEY = EXTPROC1521))

  )

  (DESCRIPTION =

  (ADDRESS = (PROTOCOL = TCP (PORT = 1525))(HOST = localhost))

  )

  )

  ADR_BASE_LISTENER = / u01/app/oracle

  tnsnames.ora

  tnsnames.ora # Network Configuration file: /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora

  # Generated by Oracle configuration tools.

  BI =

  (DESCRIPTION =

  (ADDRESS_LIST =

  (ADDRESS = (PROTOCOL = TCP (PORT = 1525))(HOST = localhost))

  )

  (CONNECT_DATA =

  (SERVER = DEDICATED)

  (SERVICE_NAME = bi)

  )

  )

  And then changed the local_listener:

  SQL > ALTER SYSTEM SET LOCAL_LISTENER = "(ADDRESS = (PROTOCOL = TCP)(HOST=localhost) (PORT = 1525))";

  SQL > ALTER the REGISTRY SYSTEM;

  Finally, I started the listener (lsnrctl start) again.

  Then I tried to connect using Oracle SQL Developer to the customer. The port of 1525 works perfectly well.

  The problem is, when I open the OEM (Oracle Enterprise Manager), it says: "the database is down. Please specify the credentials of the host to access the restart and database diagnostic tools," which is like this: http://imgur.com/oKLPW65

  So I logged on the account of the host, and it shows that the database instance, listener and the agent is all down like this: http://imgur.com/Bzr84bz

  It seems that the port used by the OEM is always 1521.

  What should I do? Can someone help me solve the problem?

  Thanks in advance.

  UPDATE:

  After changing the emoms.properties & the targets.xml (thanks to Elisabeth), you will need to reconfigure dbconsole using emca.

  So what I'm doing is decreasing the config:

  $ emca - deconfig dbcontrol db-rest drop

  and then create again:

  $ emca - create config dbcontrol db-rest

  Voila.

  Best regards

  Jerry Antonius

  Hello

  Try to change the port numbers in the following files

  Don't port no 1521 to 1525

  $ORACLE_HOME /_SID/sysman/config/emoms.properties

  oracle.sysman.eml.mntr.emdRepPort = 1525 (before 1521)

  $ORACLE_HOME /_SID/sysman/emd/targets.xml

  (Before 1521)

  (Before 1521)

• Listener.ora and TNS.ora in simple language

  Please explain Listener.ora and TNS.ora in simple language. I read a lot of blogs, but just not able to define in words.
  
  Also, there are different sections in them, so that they or represent?
  
  PROGRAM = extproc
  Protocol
  Host
  Port
  
  =================================================================
  listener.ora # Network Configuration file: E:\ORACLE\product\10.2.0\db_1\network\admin\listener.ora
  # Generated by Oracle configuration tools.
  
  SID_LIST_TEST =
  (SID_LIST =
  (SID_DESC =
  (SID_NAME = PLSExtProc)
  (ORACLE_HOME = E:\ORACLE\product\10.2.0\db_1)
  * (= Extproc program) *.
  )
  )
  
  TEST =
  (DESCRIPTION_LIST =
  (DESCRIPTION =
  * (ADDRESS = (PROTOCOL = TCP) (HOST = RICHA-PC)(PORT = 1521)) *.
  * (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0)) *.
  )
  )
  
  =================================================================
  tnsnames.ora # Network Configuration file: E:\ORACLE\product\10.2.0\db_1\network\admin\tnsnames.ora
  # Generated by Oracle configuration tools.
  
  EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
  (ADDRESS_LIST =
  * (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0)) *.
  )
  (CONNECT_DATA =
  (SID = PLSExtProc)
  (PRESENTATION = RO)
  )
  )
  
  =================================================================
  
  Published by: Richa on April 24, 2012 12:29

  Program ==> identify the name of the service executable program.

  Protocols ==> protocols specify the interactions between the communicating entities. A protocol is the set of rules that use endpoints in a context of communication when they communicate special.
  http://en.Wikipedia.org/wiki/Communications_protocol

  Host name of the machine where db is cobfigured ==>.

  Port ==> port is just an interface (or for example, we can imagine our telephone jack on the phone) between two computers or two software. Thus, if two computers to talk to each other, each of them should communicate through a port.
  http://Neeraj-DBA.blogspot.in/2011/03/what-is-port.html

  Neeraj-

• 'stop private browsing' and 'clear history' under Tools is gray and cannot be verified.

  Problems:
  -"stop private browsing ' and 'clear history' under tools are grey and not verifiable
  -often, not always, I get a message that I can't surf the web because I'm offline; but work offline was not checked and I've never worked offline
  -on several Internet sites, such as ESPN and others, print it on a single line straddles printing on the next line, and the impression of the bottom line cannot be read

  • You're in private browsing mode, if you see "tools > stop private browsing", possibly gray
  • You enter private browsing mode, if you select: Firefox > Preferences > privacy > History: Firefox will be: "don't forget the story ever.
  • To view all the history settings, choose: Firefox > Preferences > privacy, choose the setting Firefox will: use the custom settings for the story of
  • Uncheck the box: [] "automatically start Firefox in a private browsing session.

  See also:

  • Always start Firefox in a private browsing session

• Look at the card and the reader at the same time?

  Are you able to listen to music from the sd card AND the reader at the same time? As the mixture between thbe reader and card? Or is it one or the other?

  Thank you kindly.

  Yes. If set to the random mode, for example, it selects randomly beaches/files of two memory slots.

• Printer does not print after canceling a print job even if I deleted the queue and stop the printer and the computer.

  Re Vista - printer does not print after canceling a print job even if I deleted the queue and stop the computer and the printer and restarted.

  Hello

  ·                         try to uninstall and reinstall and use the latest printer drivers VISTA for your model of the manufacturer of the printer

  You can also track information to try to solve your problems of printer below

  read the printer correct that information the slot microsoft, including the 'fix - it' and the information of the links to the other

  Solve printer problems

  http://Windows.Microsoft.com/en-us/Windows-Vista/troubleshoot-printer-problems

  and read this microsoft tutorial too

  Introduction

  This tutorial is designed to help you identify and fix the problem printer common windows problems, including print errors, or errors, and other issues that could prevent you from printing. This tutorial does not cover printing problems related to specific programs. Printing problems can be caused by cables that are not properly connected, corrupt, drivers, incompatible drivers, the printer settings, missing updates and problems with your printer.

  How to use this tutorial

  For best results, complete each step before move you on to the next. Try to print after each step before moving on to the next step.

  http://Windows.Microsoft.com/en-us/Windows/help/printer-problems-in-Windows