RMIIP use of TCP/IP?

Anyone know if RMI-IIOP use TCP/IP????? or just IP?

TCP/IP of course!
RMI use standard ISO TransfertControlProtocol network layer.TCP is aproximatly the 4th layer and IP the 3.

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How to use the TCP/IP in Java?Thanks!

How to use the TCP/IP in Java?Thanks!

Look at the java.net package, more specifically to classes ServerSocket (The server TPC conection) and Socket (the client TCP conection)
Abraham

No internet access using manual TCP/IP settings after 10.4.6

I stopped being able to access the internet with manual TCP/IP settings in the Network Preferences after updating from 10.4.5 -> 10.4.6.
When I change settings to use DHCP everything works fine, but I need to get the manual settings working as I use them quite often when configuring/setting-up routers.
This happens with both the AirPort and Ethernet interfaces, so it doesn't matter which interface I use to connect through.
My network Locations with manual TCP/IP settings have worked fine with 10.4.5, under the same networking hardware (routers, cables, etc...).
This occurs both at home (with my Linksys wireless router) and at work (with a DrayTek router).
At home, this problem occurs with both my PB12 and my wife's iBook12, after the 10.4.6 update was applied.
At work, all Windows laptops can connect to the internet using manual TCP/IP settings, but not my PB12.
Example of my settings:
- IP: 192.168.1.99
- Mask: 255.255.255.0
- Router: 192.168.0.1
- DNS: <empty>
- Domains: <empty>
Already tried, without success:
- verified disk -> no errors found on disk!
- repaired permissions, using Disk Utility, rebooted and tested -> no connection!
- tried with DNS=192.168.0.1 -> no connection!!
- tried with DNS=[my ISP primary dns] -> still nothing!!!
- even tried reapplying the combo update 10.4.5 -> of course, it didn't let me, as I'm now in 10.4.6!
Any thoughts or ideas to fix it and make it work in 10.4.6?
... other than archive&install, in order to downgrade!
PB12'' @ 1,33 GHz w/ 768MB RAM Mac OS X (10.4.6)

Yes, buy I also state in my original post that I:
- tried with DNS=[my ISP primary dns] -> still nothing!!!
but yes, I probably should have titled it "No network access using..." (posting as 4:30 AM was probably not the best idea :D)
I understand I might have been a bit clumpsy posting my problem and appreciate everyone's corrections to what I wrote, but trust me that I have done a lot of tests and spent many hours on this... Bear in mind that I am using a network Location with manual definitions that was working before the update!
Anyway, as it happens, the likely culprit now seems to be more of a 3rd party software's inability to deal with 10.4.6 rather than the 10.4.6 itself!
I've disabled/unistalled/turnned off/deleted (depending on the app) anything NOT Apple that had anything to do with networking, be it for monitoring, controlling or managing (just to name a few: Little Snitch, Menu Meters, BrickHouse, etc, etc, etc...).
The Location with the manual settings is now working fine (at least at the office).
Over the next week or so I'll incrementaly re-install those 3rd party tools (which were most likely not up-to-date anyway) and see if something breaks at some point... but won't put much effort into it -- just happy to see it working again!
I'm closing this for now, as I don't have any more time for it (work is pilling up!)... If I manage to find out which version/app combination was causing the problem I'll post it back here!

How long a message can be sent via TCP using the TCP Read VI?

Hello,
How long can be a message sent between a TCP server and a TCP client using the TCP Read VI (LV2013)? There is a certain limit?
Thank you.

I think it just depends on your hardware's buffer size. TCP sets limits on the size of packets that can be seent. What are you trying to do?
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

Using Sockets TCP/IP to connect through Proxies and Firewalls

How to do in a Client/server Application using Sockets TCP/IP to connect through Proxies and Firewalls?
How to implement the HTTP Tunnelling in this case?
the code in Client to connect to server is:
SSLSocketFactory sslFact = (SSLSocketFactory)SSLSocketFactory.getDefault();
               socket = (SSLSocket)sslFact.createSocket(c.site, c.PORT);
          String [] enabledCipher = socket.getSupportedCipherSuites ();
               socket.setEnabledCipherSuites (enabledCipher);
               out = new ObjectOutputStream(socket.getOutputStream());
               in = new ObjectInputStream(socket.getInputStream());
The Server is an executable Standalone Application with a main Function � How to do to convert this Server in a Servlet Application?
the code in Server to wait client connections is:
Runtime.getRuntime().addShutdownHook(new ShutdownThread(this));
          try {
               SSLServerSocketFactory factory = (ServerSocketFactory) SSLServerSocketFactory.getDefault();
               SSLServerSocket sslIncoming =
                    (SSLServerSocket) factory.createServerSocket (PORT);
               String [] enabledCipher = sslIncoming.getSupportedCipherSuites ();
               sslIncoming.setEnabledCipherSuites (enabledCipher);
          while(running) {
                    SSLSocket s = (SSLSocket)sslIncoming.accept();
               newUser(s, pauseSyn);
          } catch (IOException e) { System.out.println("Error: " + e); }
some links or code sample?
Thanks in Advance

Did you see this: Networking Properties?
Including
SOCKS protocol support settings
and
http.proxyHost (default: <none>)
http.proxyPort (default: 80 if http.proxyHost specified)
http.nonProxyHosts (default: <none>
ftp.proxyHost (default: <none>)
ftp.proxyPort (default: 80 if ftp.proxyHost specified)
ftp.nonProxyHosts (default: <none>)

TCP Open and Close using NI TCP VI's

Do I need to close the TCP connections on both ends. For example, I have a "server" that Listens and then a client that opens the TCP connection. Do I have to close the TCP connections on both ends. I'm closing it at the client side but is it also suppose to be closed at the Listening end?

Guy04 wrote:
Do I need to close the TCP connections on both ends. For example, I have a "server" that Listens and then a client that opens the TCP connection. Do I have to close the TCP connections on both ends. I'm closing it at the client side but is it also suppose to be closed at the Listening end?
Whenever you optain a LabVIEW refnum through an Open or similar function you should close it at some point too. A TCP refnum is really sort of a pointer to a local network socket and therefore represents resources in the form of memory and network stack management information. Not closing a connection refnum returned by the listen node may prevent your server to serve new connections after some time, since all internal network ports are blocked or the nework stack runs out of resources.
So close the connection refnum returned by the Listen function after the server is done serving your client and of course do the same on the client side as you already did. Also if you use Create Listener and Wait on Listener (which allows you to write server applications that can serve multiple connections simultanously) close the Listener refnum too when your server is done. Not doing so may prevent the server to be opened at the same port without restarting LabVIEW or at least your application.
Rolf Kalbermatter
Rolf Kalbermatter
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Using Modbus TCP I/O Server with new DSC Shared Variables in LabVIEW 8.6

Hello,
I'm using LabVIEW 8.6 and want to communicate with a Beckhoff BK9000 Ethernet TCP/IP Bus Coupler via Modbus TCP. Instead of using the NI Modbus Library, I've tried the new LabVIEW 8.6 feature "DSC Shared Variables" as described at the bottom of this page: Latest NI LabVIEW DSC Module Features and Demos. Reading of analog input bus terminals works fine. However, I haven't figured out yet how to write on an anolog output bus terminal with these shared variables.
It's about a 16 bit analog output and I need to write to the registers 0x1121 and 0x0801. It works with the NI Modbus Library (just using function code 6 and choosing the registers), but on the other hand I don't know which shared variables I have to choose for these registers. I've tried several data items (e.g. 400001 upwards as well as 402049 for 0x0801) but none of them worked. I would be glad for a short explanation - thanks in advance for your support!
Regards
utechle

The Beckhoff documentation says, that holding registers start with 0x0800. I've checked this by using the NI Modbus Library. I used the "MB Ethernet Master Query.vi" togehter with the function code 6 for "Write Single Registers", changed the settings of the starting address to hexadecimal view and entered 801 (since it starts with a control byte in 0x0800 and the data out word follows in 0x0801). Furthermore, I had to address register 0x1121 in the same way for resetting the watchdog. As I've mentioned in my first post, this method works fine. However, I haven't found out yet which shared variables i have to use for accessing these registers.
On the other hand, it's no problem to read data from analog input bus terminals using shared variables. They start with 0x0000 (status byte) and 0x0001 (data in word) and I can read data with the shared variable and data item 300001, respectively.
Message Edited by utechle on 01-27-2009 11:12 PM

Error while talking WCF using net.tcp

I am getting following error in Trace viewer while communicating WCF service from WPF application using NetTCP
The ' ' character, hexadecimal value 0x20, cannot be included in a name.
Parameter name: name
I am getting error on following even of WPF
===============================
void onStartClick(object sender, EventArgs e) {
        productsServiceHost = new ServiceHost(typeof(ProductsServiceImpl));
Here is my app.config of WPF
====================
<?xml version="1.0"?>
<configuration>
   <configSections>
       <section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
requirePermission="true" />
   </configSections>
   <dataConfiguration defaultDatabase="AdventureWorksConnection" />
   <connectionStrings>
       <add name="AdventureWorksConnection" connectionString="Data Source=WIN764PRSP1\SQL2008;Initial Catalog=AdventureWorks2008;User ID=sa;Password=!@Sql2008@!"
            providerName="System.Data.SqlClient" />
   </connectionStrings>
   <startup>
       <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
   </startup>
   <system.serviceModel>
       <services>
           <service behaviorConfiguration="ProductsTcpBehavior" name="ProductsService.ProductsServiceImpl">
               <endpoint address="net.tcp://localhost:8080/TcpProductsService"
               binding="netTcpBinding" bindingConfiguration="" name="NetTcpBinding_IProductsService "
               contract="ProductsService.IProductsService" />
           </service>
       </services>
       <behaviors>
           <serviceBehaviors>
               <behavior name="ProductsTcpBehavior">
                   <serviceDebug includeExceptionDetailInFaults="True" />
                   <serviceMetadata />
               </behavior>
           </serviceBehaviors>
       </behaviors>
   </system.serviceModel>
</configuration>
Here is my app.config of Console Client Application
===================================
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
   <system.serviceModel>
       <bindings>
           <basicHttpBinding>
               <binding name="NetTcpBinding_IProductsService" closeTimeout="00:01:00"
                    openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
                    allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
                    maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
                    messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
                    useDefaultWebProxy="true">
                   <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
                        maxBytesPerRead="4096" maxNameTableCharCount="16384" />
                   <security mode="None">
                       <transport clientCredentialType="None" proxyCredentialType="None"
                            realm="" />
                       <message clientCredentialType="UserName" algorithmSuite="Default" />
                   </security>
               </binding>
           </basicHttpBinding>
       </bindings>
       <client>
           <endpoint address="net.tcp://localhost:8080/TcpProductsService"
                binding="netTcpBinding" bindingConfiguration="" contract="ProductsService.IProductsService"
                name="NetTcpBinding_IProductsService" />
       </client>
   </system.serviceModel>
</configuration>
Here is Program.Cs file in Client
======================
static void Main(string[] args)
            Console.WriteLine("Press ENTER when the service has started");
            Console.ReadLine();
            // Create a proxy object and connect to the service
            //ProductsServiceClient proxy =
            //    new ProductsServiceClient("BasicHttpBinding_IProductsService");
            ProductsServiceClient proxy = new
                ProductsServiceClient("NetTcpBinding_IProductsService");
            // Test the operations in the service
            // Obtain a list of all products
            Console.WriteLine("Test 1: List all products");
            string[] productNumbers = proxy.ListProducts();
            foreach (string productNumber in productNumbers)
                Console.WriteLine("Number: " + productNumber);
            Console.WriteLine();
Can anyone assist where i am wrong.

Hi IT Quest,
In your scenario, I see that you have hosted your WCF Service on the WPF application and it throws exception from WPF application, so in my mind, the WPF does not work well when hosting the WCF Service, please try to do a test by using the WcfTestClient(https://msdn.microsoft.com/en-us/library/bb552364(v=vs.110).aspx)
to see if your WCF Service works well.
The following article show us how to host a WCF service using WPF, please try to check it:
https://soumya.wordpress.com/2010/05/26/wcf-simplified-part-7-hosting-a-wcf-service-using-wpf/ .
Please also try to enable the WCF tracing to help find the root cause.
#How to enable WCF tracing:
https://msdn.microsoft.com/en-us/library/ms733025(v=vs.110).aspx .
Besides, if the problem still exist, it will better if you can try to post a simple reproduce project in here.
Best Regards,
Amy Peng
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Using modbus/TCP with USB ethernet adapters

I have a test stand where I have a handful of USB instruments and a single modbus/TCP slave. I'm considering adding a USB ethernet adapter to the stand so that there is a single USB cable connecting the computer to the hardware rather than both a USB and an ethernet connection. Does anybody out there have experience (good or bad) using USB ethernet adapters with modbus/TCP slaves?
The existing USB instruments all use ASCII/SCPI-style command sets. The Modbus/TCP slave is an Automation Direct EBC-100. Nothing high-bandwidth or low-latency. Basically, the computer issues no more than a handful or command or request (ether SCPI or Modbus/TCP) per minute.
Mark Moss
Electrical Validation Engineer
GHSP

Adam G wrote:
Hello Mark,
I was wondering what NI hardware you are going to be using in your application? Also are you going to be using LabVIEW for the programming? Have a great day!
Best Regards,
Adam G
The test software is written in LabVIEW, and the test stand uses M-Series cards for data acquisition.
Mark Moss

Using a TCP/IP Connection to REQUEST and RECEIVE data from a iDRX Signal Conditioner through a EIS-2B Server

First let me say that I am new to labview, please bear with me. I want to use Labview to querry a iDRX thermocouple signal conditioner using tcp/ip. The signal conditioner is wired to a EIS-2B server. The server is at 198.162.10.53 and port 2000. The data request command is *10x01\r and the expected data to be returned is 01X01+00064.6 (or whatever the actual temperature is). The conditioner and server are working and testing correctly using the iDRX supplied software.
My attached vi runs, creates no errors, but returns no data either. I can find many examples of how to set up a listener, but I need to QUERRY and then RECEIVE the data.
Thanks in advance.
Attachments:
Alyeska 4.vi ‏15 KB

Hi Alyeska! Welcome to the forums!
I took a quick look at the VI, and I have four quick suggestions for
you that may give us some information about what is happening.
You may be experiencing an error that just isn't detected by the VI -
normally we add an error handling VI at the end of program execution to
report any errors that occurred. Also, it's helpful to have a way
to exit the while loop so that the program can finish executing if an
error occurs. Third, you may need to introduce a delay between
the query and the read command to allow the server time to process and
respond to the request. Lastly, if you already know how long the
return message will be, you should wire this length to the Bytes to
Read input of the TCP Read VI so it knows to return the data once it
receives that number of bytes. I've attached a modified version
of the VI incorporating these - give this a try, and let us know if you
still see an error, and if so, what error. Also, if you haven't
taken a look at it already, there are excellent resources for learning
LabVIEW at the LabVIEW Fundamentals page - it's a great way to introduce yourself to LabVIEW and get up to speed quickly.
Cheers,
Matt Pollock
National Instruments
Attachments:
Alyeska 4.vi ‏19 KB

Communication between Windows 7 and Windows 8(and above) using Sockets(TCP and UDP)

I need to use TCP and UDP using Sockets to communicate between two(or more) applications installed in Windows 7 and Windows 8.
Is it possible.? I tried within a LAN, but in vain. If needed I would post the appropriate code.
Note: I only tried running exe(s) in these machines and not with installation.

Hello Prabodh.Minz,
>>Is it possible.?
It is not clear what develop language you are using, here are examples which uses the C# based on .NET. It created the communition between two machines by using sockets with TCP protocol, a server and a client:
Synchronous example:
Client and
Server.
Asynchronous example:
Client and
Server.
Multi-client per one server - socket programming in .net(C#)
>>Note: I only tried running exe(s) in these machines and not with installation.
There are all .exe.
Regards.
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Does iCould use special TCP/IP ports?

Hello,
I routinely use iCloud to share iWork documents between my MacBook Pro and my iOS devices. But somehow, I cannot access these documents from the iWork apps on my office iMac (runs Mountain Lion). Could someone suggest a probable reason? (iCloud-based calendar, notes, reminders sync alright.)
Could this be because iCloud uses non-standard TCP/IP ports, most of which are blocked by my organization’s systems administrator? I could not find anything suggesting that on Apple’s web site.
Thanks,
Girish.

Yep, both of them are blocked. So that’s the answer then. I wish there were iCloud documentation somewhere with this piece of information.

RMI-IIOP use of TCP/IP

Anyone know if RMI-IIOP use TCP/IP????? or just IP?

Hi,
RMI over IIOP uses IIOP as its communication protocol where as RMI uses a wire level protocol called Java Remote Method Protocol (JRMP) on top of TCP/IP .
For further information on this please visit
http://java.sun.com/products/rmi-iiop/index.html
Hope this helps.
Good Luck.
Gayam.Srinivasa Reddy
Developer Technical Support
Sun Micro Sysytems
http://www.sun.com/developers/support/

Using modbus tcp/ip to control vfd speed

Hi, I'm brand new to Modbus and fairly new to LabVIEW. I do not have any code constructed yet, so I'm posting to here so that hopefully I can get led in the right direction. I have downloaded the free modbus library because after explaining to NI what I needed, they told me that this would give me enough functionality. I am trying to read the vfd frequency and display it on my front panel, as well as be able to adjust the frequency of the vfd through the front panel. I'm sure that this is a fairly simple and straightforward solution, but since I am brand new to modbus, I really am not sure what values I need to get in order to make this happen. I'm assuming that I need to initialize a tcp master, but what values do I need to feed it so that it can read anything from my vfd? I have an ABB ACS355 VFD with a FENA-01 ethernet adapter. I have the manuals for both and I see lots of parameters and numbers but I don't know how to make sense of them. Are there any keywords I should be looking for in these manuals? Sorry for posting such a general question but I really don't know how to begin this properly. Thanks in advance for any help!

Hello,
A great place to get started will be the shipping examples in the example finder. In LabVIEW, if you go to Help>> Find Examples and the search "Modbus" you will see and example called Modbus Fundamentals.lvproj. This uses shared variables and can communicate with TCP/IP (or ethernet etc) and is set to connect to the localhost. This example also shows how to read and write using Modbus. There is a readme also included in the project if you need more information.
Additionally, there is a great getting started white paper that may be helpful for you. I've linked it below:
Introduction to Modbus: http://www.ni.com/white-paper/7675/en/
I hope this helps!
Best regards,
Anna L
Applications Engineer
National Instruments

Controlling a Load Drive using Modbus TCP or Ethernet IP

Hello,
My name is Francisco Loras. My team and I are looking forward to building a dynamometer in order to obtain test standards for motors. We're going to use a Load Drive in order to control the Load Motor. The Drives we have been looking at are either from ABB or from Yoskawa (a1000), both offer the option of connecting via Modbus TCP/IP or via Ethernet IP. I was wondering if someone has previously worked with them and could give me some feedback on either the drive or connection type. I would preferrably use Ethernet because the complete system we're building requires at least one more ethernet connection (for a Power Analyzer).
Besides this, we were counting on using a Chassis from NI to put everything together. When looking at the specific modules, we considered two options:
1- Using an ethernet module (from NI that fits in the Chassis) to drive in both the Power Analyzer and the Load Drive.
2- Using an ethernet switch setting specific IP addresses.
Has someone used any of these before? A switch would be close to 50 times cheaper than using the ethernet module itself so I'm a bit worried there might be something that limits it or that I'm missing (noise maybe?).
To conclude, I'm looking forward to se if someone has:
1) Used Ethernet IP or Modbus TCP/IP to control a Load Drive, which connection type is best if any.
2) Recommended any specific load drive
3) Experience with using an ethernet switch or an ethernet module.
Thankyou very much for your help and time,
Francisco
PD. If something is unclear (which I sense it is) please ask me and I can develop more on it.

Florasga,
Which ethernet module are you looking at? And what kind of chassis are you planning on using?
There's some more information on Modbus here. Also, have you seen this forum post?
Kyle T.
Applications Engineering
National Instruments

RMIIP use of TCP/IP?

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