Writing of TCP timeout

Similar Questions

• Reading TCP timeout

  I understand that other discussions on this topic are already, but I still have to find a solution among them.

  Here's the scenario:

  I have a PC (running Win7) which is connected to a monitor Signal Agilent N9020A MXA (WinXP) host over a LAN connection. The reason behind the connection to the LAN via the GPIB is software VSA 89601 B added I want to access through SCPI commands through code LabView on the host PC. According to Agilent, it's one of the ways to do so.

  I have IPS assigned and specified the Agilent recommended port 5024 for a TCP/IP connection. I am able to write commands using TCP write using LabView, but I can't read anything by using TCP Read. Indeed, according to some variations of the options I tried of the subjects of the previous forum, I always end up with error 56 or 66.

  I checked that the SCPI command is working to extract data using Agilent IO Interactive. It should be fairly simple. Because I want to automate this process, please help? What Miss me?

  Thank you in advance.

  Solved.

  Remove the end must be disabled to get rid of Reading TCP timeout.

• Default TCP timeout on ACE

  Hello

  What is the default TCP on ACE time and how I can check it out. I have the sticky time set to 720 minutes. It applies to TCP timeout as well.

  If you have not configured the parameter map and applied to the policy then ACE certainly will use the default values.

  A way to test, it could be opening a new tcp connection and use the commmand "view details of conn" with the ip address of dest.

  Conn detail | beg 10.10.10.10

  and search for [timeout: xx:xx:xx].

  downtime gives you the downtime for this connection.

  HTH

  Syed Iftekhar Ahmed

• TCP timeout problems

  Hello

  Request: I'm using LabVIEW 8.2 to connect with a RFID reader.

  I connect to the player via TCP and write (write block TCP) a number of orders (connection, system of game settings, player tags list queries), and my VI works smoothly, with one exception: since I don't know how many tags in advance will be near the read drive ability, I have no method to measure the length of the data back (the block of reading TCP bytes to read).

  To break down the problem, I can either read a very small number of bytes and avoid a time-out error 56, losing some data back in the process, or I can allow the system to timeout, read a large number of bytes and allowing every step of execution take time designated in the time-out period rather than the amount of time it takes indeed for the reader to respond.

  My question, simplified: is there a way I can use the TCP protocol to read only the data that is sent (rather not specify the number of bytes that will be read, which allows the VI to make when no additional data is available)?

  Thank you in advance.

  As far as I know, there is no way to check the amount of data it is in advance. Some protocols have a predefined byte quantity, or send a message by sending the length of the message, for you first read and know how many bytes you need.

  If you can not do that, what you want to do is call reading TCP primitive in a while loop until you get an error in time-out and the warp threads in a tunnel of automatic indexing output. You can then wire the string array resulting 1 d in the string concatenate primitive to convert it to a string. In this way, you can use a short timeout and read a small number of bytes for each reading without loss of information.

• TCP timeouts

  Guys,

  I am looking for a single document that describes the configurable timeouts in the PIX for the following:

  (1) TCP half-closed connections

  (2) connections,

  (3) half-closed connections

  I remember seeing a table describing these (delays in waiting or limits-embryonmic) settings, but I can't seem to find on the site now.

  Thanks in advance for your help,

  Vito

  Ahhh, finally got there. No, the half-open connection timer is not configurable. It is however for 2 minutes. That means that, as soon as we get the initial SYN packet in, the second has mons 2 before delete us it.

  And no problem on the long thread.

  Scott

• Error writing TCP/IP 1.

  Greetings,

  I worked on a small card project his oscilloscope and I was stuck getting an error code 1 when I try to do a writing of TCP. (I want to enjoy on a map of its server, send the waveform over TCP to a customer, and then the client will perform some basic oscilloscope.

  Currently, it is not in a very organized State. Comments have been added and the implementation of state diagram is probably not ideal. A GUI is probably the last thing I want to come back, so there is a, but it's a pretty big mess right now as well.

  In the code, I'm trying to flatten the table 1 d in a string to be sent over TCP, then he unflatten at the customer level. This doesn't seem to be the problem, however. As I said, I get an error code 1 on TCP write to the server. I eventried change simply write a 'Hi' string and tell the client to read 2 bytes. No dice, same error.

  I am both on the same machine running at the moment and trying to connect to 127.0.0.1 on port 40000

  Someone happen to have an idea of why this error continues being implemented? I am aware that it is synonymous with "invalid entry", but I can't understand what is not valid.

  After that I can transfer the data via TCP, my next step will be to reduce the number of samples, I take the soundcard on the server)<1000). it="" often="" crashes="" when="" i="" reduce="" the="" sampling="" that="" low.="" i="" haven't="" tried="" to="" solve="" this="" aspect="" of="" the="" project="" much="" myself,="" so="" i="" feel="" it'd="" be="" rude="" to="" ask="" others="" to="" invest="" time="" in="" a="" solution="" for="" me.="" if="" you="" happen="" to="" know="" a="" good="" suggestion="" readily="" for="" this,="" i'm="" all="" ears.="" the="" main="" problem="" here="" is="" the="" mysterious="" error="" 1="" i'm="">

  To produce this error:

  Set the server and Client to communicate on port 40000. Start the server and put a probe on the TCP write error. Start the client and enter 127.0.0.1 or localhost in the dialog box. The error should appear when the probe is.

  Thank you

  Pheria

  You have confused the ID of listening port TCP with the TCP connection ID.  In the pending state, there's a "Login ID" exit to wait for TCP on the listening port, and it is the reference you need to connect to write to TCP.  In writing to the listener ID causes an error.  A listener can accept multiple connections on the same port, and each connection is assigned its own ID when the connection is established.  This allows you to write a server that can handle multiple connections on the same port at the same time.

• Error of TCP connection when sending MODBUS for WAGO controller 750-881 orders after 113655 bytes of data have been sent

  Hi all

  I'm new in the world of labview and trying to build a VI that sends commands to a controller of the WAGO 750-881 at regular intervals of 10 ms.

  To set each of the WAGO comics at the same time, I try so to send the Modbus fc15 command every 10ms using Labview standard TCP write module.

  When I run the VI it works for about a minute before receiving an error message 56 telling me the TCP connection has expired. This strange thought, I decided to record the number of bytes sent via the TCP connection while running the program. In doing so, I noticed that the link broken after exactly 113655 bytes of data have been sent each time.

  Thinking can I have sent too many messages, I increased the delay of the loop of 10ms to 20, 100 and 200 ms, but the error remained. I also tried to play with the TCP connection timeout and the writing TCP timeout, but none of these had no effect on the problem.

  I do not see why this error occurs, such as the program works perfectly up until what brand 113655 bytes.

  I've attached a screenshot of the base VI (simply showing a MODBUS command sent every second) and a more advanced VI (where I am able to control each of the WAGO manually by setting a frequency at which the DO is to switch between ON and OFF).

  If anyone has any ideas on where the problems lie, or that I could do to debug more program this would be greatly appreciated.

  AvdLinden wrote:

  Hi ThiCop,

  Yes, the error occurs after exactly 113655 bytes each time. Time-out control, I would like to use is 10ms, but even that will rise to 1 s or 10s does not error, which leads me to believe that's not the issue (as well, do not add any delay in the while loop, so let it run at the maximum speed showed that the TCP connection is able to send all the bytes 113655 in less than 3 seconds again directed towards control of time-out) is is not the issue here).

  I tried the suggestion of Marco but having difficulty to translate the string returned in a readable string (rightnow the answer given is "-# +" ' ").

  As for your second suggestion, I've implemented something similar, where I created a sub VI to establish a TCP connection, send a message and then close the connection. I have now to build each message and then send the string to the Subvi, which sends the command to my application successfully. While not the most elegant method to solve the problem, it solves the problem of time-out, which means that I am able to send as many orders as I want. So in this sense, the problem has been resolved.

  If you have advice on how to properly read the TCP read the output, I want however to see if I could not get my first program to work because it is slightly more robust in terms of timing.

  MODBUS RTU TCP is a binary protocol, as you show in your base VI, where you put in the form the data stream using byte values. So you have to interpret the returned answer accordingly with the Modbus RTU spec in the hand. Now what is probably happening is that the connection is suspended after a while because you do NOT read data from the device sends as response to your commands. The TCP/IP stack cushions these bytes and at certain point of overflow internal buffers and the connection is blocked by the battery. So to add playback of TCP in strategic locations (usually after each entry) is the right solution for this. Is there a reason any that you do not use the PROVIDED Modbus TCP library?

• Windows updates broke printing tcp/ip (Windows XP)

  After having installed XP 16 separate security updates 11 Oct, TCP/IP printing has stopped working. A "Test Page Print" prints and sends data to the printer (2 different printers installed all both have the same number), but then the print job stops and after a timeout there is an error of ball "this document failed to print" message  ~62K/62K sent to the print queue. A small part of the beginning of the document is left in the buffer of printing. Very small documents consisting only of a few words will print completely, but not normal printing. When printing large print jobs, only the first 64 K should be sent to the print queue.
  The author of the XPS document works very well.
  There is plenty of space on the hard disk > 120 GB free, and the file system is clean.

  Tried the following remedies:
  -Reinstall printer drivers - no difference, two printers are located during the driver installation, but fail in the same way
  -KB324757 followed by the printer driver won't reinstall - no difference
  -Disabled windows firewall (no firewall present AV) - no difference
  -Reinstalled NIC - no difference driver
  -Reset the stack TCP/IP - no difference
  -Added 3 new test printer, printing TCP/IP by WiFi - fails to find the printer on the network.

  Windows updates that have been installed:
  KB2861189, KB2862330, KB2883150, KB2879017, KB2827329, KB2861697, KB2868038, KB2827324, KB2760591, KB2827326, KB890830, KB2862335, KB2762585, KB2847311, KB2863239, KB2827330

  Maybe the dreaded KB2862330 once again:

  http://Permalink.Gmane.org/Gmane.comp.Security.patch-management/2795

  Also mentioned in this article of mega:

  http://home.Comcast.NET/~itdave/site/?/page/Microsoft/&PHPSESSID=5c4a2c67d806f72bcab8f936e6b63e84

  However at the time of writing, the TCP/IP fault is not mentioned specifically on the document of Microsoft for KB2862330:

  http://support.Microsoft.com/kb/2862330/en-GB

• How can I send a HTTP request to a web server using TCP?

  I'm writing a HTTP string to activate a script CGI, server of our company. It seems that the OPEN TCP CONNECTION works. Can I just use the TCP WRITE function to send the HTTP request string to the server?
  Thank you
  Tim

  I know that I probably would have finished faster if I had the Internet Toolbox, but the solution ends up being pretty simple with just the TCP features.
  Here is the solution, I came with yesterday (in the case where someone else needs) after searching Protocols TCP as suggested by "Laboratory Viewer" and examine details in the riding of developer. It ends up being only a string of 4 line.

  GET HTTP://proxyserver/path/file.asp?id=test HTTP/1.1
  HOMEroxyserver

  The first line of the string is made up of three things:
  (1) the GET command
  (2) the URL of the program target (in this case an ASP program that distributes a message preset)
  NOTE that in this case, the URL contained "HTTP://proxyserver" and not only the path to the file. If your not using a proxy server, you can probably omit the name of the server of the URL, but you must always the name of the host server to the second line.
  (3) the HTTP version used

  The second line is the host server.

  The last two lines are empty, but the two are apparently necessary to properly close the TCP request.

  Vi uses an OPEN TCP CONNECTION to connect to port 80, then the 4 line string is sent with a WRITING of TCP and the connection is closed with a NARROW CONNECTION of TCP.

  In my application, when the piece of equipment monitored by LabVIEW begins to enter a dangerous to use, LabVIEW uses this vi to send the HTTP request through the TCP connection and a program of target ASP on the company's web server. The ASP reads the message ID (? id = test) and sends the message page and the text messaging appropriate to maintenance and engineering personnel. People warned by text pagers are supposed to respond immediately.

  Our DSI wrote the ASP that allows you to set the ID of multiple message with different distribution lists. Each message is triggered with a different ID of the virtual instrument according to the gravity of the situation.

  Thanks to other amateurs who have published their questions and their answers. Hope someone else finds this useful.

• Error 62 TCP

  I try to write 4 info after a tcp connection is in place.

  1. "registration".

  2. "subscribe."

  3. "HeartBeat".

  4. "cancel registration".

  1, 2 and 4 to send to the server to client without problem, but 3 cannot cross and give a message of error code 62.

  I use the attached vi for the writing of tcp.

  Any suggestion?

  Your code seems incomplete. I don't see how these States are treated.

• CSCub20591 - TCP connection expires on H323 call and40; Firewall problem

  Hey all,.

  I have a client that has this problem.  I sent him the details of this bug, but he has no idea of what setting would need update on its ASA to fix this time-out period.

  Anyone have any ideas?

  Thank you
  Justin

  Hey Justin, funny see you here, haha.

  I never ran on precisely this issue, but I know about the ASA you can set timeouts for different classes of traffic, essentially matching via ACL and by applying a global or interface-specific policy via.

  Some notes on the method I found here - and http://www.networkoc.net/increase-tcp-timeouts-on-traffic-destinated-to-your-sql-server-cisco-asa-8-2/

  Official documentation Cisco - http://www.cisco.com/c/en/us/td/docs/security/asa/asa84/configuration/guide/asa_84_cli_config/conns_connlimits.html#wp1179119

  If all goes well which can help to point in the right direction.

  See you later!

• questions about pix timeout

  Hello

  Understand that there are some parameters of time-out on pix. Need to check:

  1 TCP timeout 01:00. In my view, that it is idle time-out. PIX send TCP reset after timeout?

  2. 03:00 timeout Xlate. Is - this time out inactive?

  PIX send TCP reset after timeout?

  Yes, according to the information in the original post, the PIX should remove any xlates that has been inactive for 3 hours. Once these are removed, the need of xlates should be re-established a connection to occur.

  Does that help?

  Scott

• TAF and time-outs TCP - AMT Config - VIP

  Hi all
  
  I'm reviewing a configuration of 11 g Dataguard (1 primary-> 1 physical standby) 2. I was just curious, given the underside of tns, wouldn't the customer receive/wait for a TCP time-out after 3 minutes if the main server was actually full down.
  
  Here if the scenario, I do a permutation of primary eve-> all the links already connected are passed to the first new using TAF.
  Now, all those already connected before the swtichover are ok, but the news of the day before (primary source) is now completely down, I have to change the entry of TNS for use instead of the VIP for new connections not TCP timeout?
  

  POMS=
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = orap01.intm.com)(PORT = 1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = orap02.intm.com)(PORT = 1521))
      (CONNECT_DATA =
        (SERVER = DEDICATED)
        (SERVICE_NAME = POMSDG.mf.galderma.com)
      )
    )

  Below is a reference Tom Kyte, but I was wondering if anyone else had already implemented it.
  

  Here it solution:
  -----------------
  1) tnsnames.ora entry will have connect time failover configured for primary and standby.
  
  2) If primary database is down but primary node is up. The above will work fine. 
  
  3) But if primary database is down and primary node is also down. The each attempt to connect using 
  tnsnames.ora will go through a TCP timeout. 
  
  solution for 3:
  
  b) On another node in primary subnet - bind/start the Failed database node IP. This can be done via 
  a script.
  Make sure to shut this down, when bringing up the failed primary node. (This is kind of a manual 
  VIP failover)

  Thank you in advance for your advice or assistance in this case.
  
  Jan S.

  Hello

  Read this white paper:

  http://www.Oracle.com/technetwork/database/features/availability/MAA-WP-11gr2-client-failover-173305.PDF

  ... and if you still have questions post again.

  Concerning
  Sebastian

• Not enough memory to complete this operation.

  I had a glance through the assignments to the title of this topic and no solution to the error that I am experiencing.

  My LabVIEW application runs on a windows 7 PC and receives messages from an application running on tha RT PC LabVIEW TCP/IP.  These messages from 4 k to 7 k bytes in length and reception are queued in the comms TCP/IP thread and removed and converted to the appropriate data type for display on the front panel in another thread (design of producer/consumer).

  After running for between 1 and 24 hours, one or more "not enough memory to complete this operation.' dialog boxes are displayed.  This interrupts the execution of the application, but these closing dialog boxes allows the application to continue running.  What I find strange is that if there is not enough available memory how is possible for the application to continue running. Windows resource monitor display shows that there is always some 1.1 GB available.  Also, what is strange is that there no noticeable change in memory is committed to my application.  I expect that if I had a memory leak which committed memory would slowly creep upward. If I need extra RAM in this PC or adding RAM will increase just enough time between errors?

  My system specs are as follows:

  Dell Optiplex XE Intel Core 2 Duo CPU 3 GHz / 2 GB RAM running Windows 7 Professional 32-bit

  LabVIEW 2010 SP1

  Any help would be appreciated.

  Kind regards

  Rob

  Dear Rob,

  Same problem, I was faced with one of my applications.

  Give some delay in your writing RT TCP loop. RAM is fine no problem with your RAM. If you connect to your data file, you found after some time, you get some unwanted characters on the TCP/IP Protocol these unwanted characters increase your data to read size. So to avoid this gives some delay in your cRIO TCP send loop.

• How to assign a value to a button

  I'm trying to assign an integer value to a button and the button must send the value of the integer assigned to the writing of TCP/IP, only when the button is pressed. I am able to send data using chain control (as indicated in the attachment) but I want to replace it with several buttons. for example, if I enter 2 in the control of the chain, these data will be sent to a robot (robot a Wi - Fi card) via the tcp/ip Protocol, it moves in front. 3 will return, 8 is on the left, 6 is just. These digital data are already burned in blackfin processor of the robot. In numbers in labview can make my robot so just move in the specified direction. can you please help me to create a button with value and convert it to a string and send it to the writing of tcp/ip. This only happens when the button is pressed. because, if I enter numbers in the control of the chain, it dosent seem good... If I have pimples... I think that my VI will look good and hitech.i am using labview 8.6robot reference:http://www.surveyor.com/SRV_info.html                          http://www.surveyor.com/                          http://www.surveyor.com/cgi-bin/robot_journal.cgi

  Hi momo,.

  You can use a structure of the event. Create a case for each button and enter the correct number to send. If you press a button of your, you can send data to your robot.

  Mike