topic Re: TCP/IP Connection failed in Talend Studio

TCP/IP Connection failed

Anonymous — Sat, 16 Nov 2024 08:39:37 GMT

Hello everybody, iam a beginner in Talend ESB.

I want to establish a TCP/IP connection to a Server. It's an RFID reader.

I have to send the reader an XML message via TCP / IP to a Host: "141.79.224.86" and a Port: 10001.

The XML message is called HostGreetings.

(<frame><cmd><id>1</id><hostGreetings><readerType>SIMATIC_RF680R</readerType><supportedVersions><version>V2.0</version><version>V2.1</version><version>V2.2</version></supportedVersions></hostGreetings></cmd></frame>)

After sending I have to get an answer. But that doesnt work.

My process is as follows:

In the first step i send the whole code via tFileDelimited to the tSocketOutput (Client). This is working.

The answer i can see only about wireshark i get one. But in Talend it does not show me.

Thats the mistake i get.

Does anybody know what i'm doing wrong?

Thanks in advance!!!!

Kind regards

Re: TCP/IP Connection failed

Anonymous — Tue, 20 Feb 2018 23:55:55 GMT

Try this.

Have two separate jobs. One for sending the message and one for receiving the message. Start the job that is sending the message first. Then start the job which is receiving the message while the first job is still running. You should then see it working. The problem with doing this in one job is that the components need to be sending and receiving at the same time. You can do this quite easily with the tParallelize component in the Enterprise Edition.

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 03:16:19 GMT

your job design is wrong...

1) 1st job: Open the port by using tsocketInput component and make sure timeout is bit high and give you enough time to execute second job

2) 2nd Job: Send your file to tsocketOutput in this job.

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 09:52:43 GMT

To be honest, the order of the jobs is not terribly important so long as you ensure that there is a crossover where they are both sending and trying to receive at the same time. To do this there are a few methods you can use. But it makes sense to look at the tSocketOutput's timeout and retry times AND the tSocketInput's timeout. Whichever you have more control over should have its timeout lengthened (and assigned more "trys" in the tSocketOutput's case).

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 10:03:23 GMT

Many thanks for the answer.

I have tried this several times before. But without success.

SocketServer (first job that is running):

SocketClient (Secound Job):

With two separate jobs, it works only via localhost!

SocketServer: (Starting)

SocketClient: runs

after the timeout comes an error message.

Starte Job SocketServer am 10:58 21/02/2018.
[statistics] connecting to socket on port 3846
[statistics] connected
Exception in component tSocketInput_1 (SocketServer)
java.net.SocketTimeoutException: Accept timed out
   at java.net.DualStackPlainSocketImpl.waitForNewConnection(Native Method)
   at java.net.DualStackPlainSocketImpl.socketAccept(Unknown Source)
   at java.net.AbstractPlainSocketImpl.accept(Unknown Source)
   at java.net.PlainSocketImpl.accept(Unknown Source)
   at java.net.ServerSocket.implAccept(Unknown Source)
   at java.net.ServerSocket.accept(Unknown Source)
   at rfidtosap.socketserver_0_1.SocketServer.tSocketInput_1Process(SocketServer.java:514)

When i mark at tSocketInput (bind host name), an error message comes immediatly.

Starte Job SocketServer am 11:01 21/02/2018.
[statistics] connecting to socket on port 4063
[statistics] connected
Exception in component tSocketInput_1 (SocketServer)
java.net.BindException: Cannot assign requested address: JVM_Bind
   at java.net.DualStackPlainSocketImpl.bind0(Native Method)
   at java.net.DualStackPlainSocketImpl.socketBind(Unknown Source)
   at java.net.AbstractPlainSocketImpl.bind(Unknown Source)
   at java.net.PlainSocketImpl.bind(Unknown Source)
   at java.net.ServerSocket.bind(Unknown Source)
   at java.net.ServerSocket.<init>(Unknown Source)
   at rfidtosap.socketserver_0_1.SocketServer.tSocketInput_1Process(SocketServer.java:507)
   at rfidtosap.socketserver_0_1.SocketServer.runJobInTOS(SocketServer.java:938)
   at rfidtosap.socketserver_0_1.SocketServer.main(SocketServer.java:787)
[statistics] disconnected
Job SocketServer endet am 11:01 21/02/2018. [exit code=1]

I dont know what else to do!

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 10:11:44 GMT

Have you tried the "Bind host name" option in the tSocketInput component?

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 10:12:29 GMT

When i mark at tSocketInput (bind host name), an error message comes immediatly.

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 10:31:01 GMT

You have to bind it to an IP address that belongs to the machine you are running the code on. This says to me that the IP address you have bound it to does not belong to the machine you are running it on.

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 10:37:00 GMT

Sorry i didnt quite understand that. Iam connected to the RFID reader via VPN. The reader is somewhere at the college. I can ping the reader via the host address: "141.79.224.86". So what does that mean exactly?

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 10:39:13 GMT

How can i bind it?

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 10:51:36 GMT

If you are on a VPN, your machine will have an IP address assigned by the VPN. But only if your machine is creating your VPN connection. If you are sharing a VPN connection across your network (maybe if your router is creating the VPN connection) you may be sharing the VPN connection's IP address. In which case you might have to go down the route of port forwarding on your router. This sounds like a networking problem, which isn't really a Talend problem.

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 10:59:28 GMT

I reach hin and he answers me. Here is whats going on in Wireshark when i play the scenario from above.

I dont think that is a network problem otherwise i would not reach it right?

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 11:20:16 GMT

It looks like your tSocketInput should be bound to 141.79.36.115. If it cannot bind to that IP then you will need to investigate why Talend does not think your machine owns that IP. Try an ipconfig (or ifconfig on linux/Mac) call to see which IP addresses your machine owns.

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 11:30:12 GMT

Since iam connected via VPN this is my new IP Adresse. I have now entered this address at tSocketInput.

It does not come immediately an error message as at 141.79.224.86.

Now comes:

[statistics] connecting to socket on port 3632
[statistics] connected
Exception in component tSocketInput_1 (SocketServer)
java.net.SocketTimeoutException: Accept timed out
   at java.net.DualStackPlainSocketImpl.waitForNewConnection(Native Method)
   at java.net.DualStackPlainSocketImpl.socketAccept(Unknown Source)
   at java.net.AbstractPlainSocketImpl.accept(Unknown Source)
   at java.net.PlainSocketImpl.accept(Unknown Source)
   at java.net.ServerSocket.implAccept(Unknown Source)
   at java.net.ServerSocket.accept(Unknown Source)
   at rfidtosap.socketserver_0_1.SocketServer.tSocketInput_1Process(SocketServer.java:470)
   at rfidtosap.socketserver_0_1.SocketServer.runJobInTOS(SocketServer.java:880)
   at rfidtosap.socketserver_0_1.SocketServer.main(SocketServer.java:729)
[statistics] disconnected
Job SocketServer endet am 12:27 21/02/2018. [exit code=1]

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 11:40:54 GMT

This is because it is not receiving a message before its timeout period ends.....but the address is being bound.

You haven't answered my question about your VPN. Can your RFID server see your machine directly? If your RFID server were to ping your IP address, would it work? This is important. This is clearly a networking issue.

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 11:45:48 GMT

When i connect via VPN, iam in the same network as the RFID server. I can ping him and i get a response.

I didnt unterstand what you mean by that. The RFID-Reader cant ping me? I just get a response when i ping him.

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 11:55:34 GMT

What is the green marked? This is what i see...

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 12:17:48 GMT

OK, I am getting confused here. Can you answer some questions?

1) Have you got a simple solution working with two jobs just posting from one job to the other (using localhost)?

2) Have you been trying this with your VPN connected?

3) Have you ensured that the port you are using is free?

4) Do you know the that RFID is receiving the message?

5) Is the RFID responding on the same port?

6) Can you try this on your local network without the VPN?

It looks like this is a network error. If you have tested the use of the tSocketInput/Output using localhost and it worked, then this question has been resolved in relation to Talend. We are now trying to debug your networking. Networking is notoriously complicated and trying to debug a job like this without trying it on the simplest network first is a bad idea. You need to try this on a local network.

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 14:37:10 GMT

Sorry for confusing...

to 1) Yes, i did that. This works with Localhost. But not with my IP-Addresses (RFID)

to 2) Yes, unfortunately, in vain

to 3) Yes, i did

to 4) Yes, otherwise i would not receive any feedback from the reader (Wireshark)

to 5) Yes

to 6) No, that doesnt work (tSocketOutput would not send)

Re: TCP/IP Connection failed

Anonymous — Wed, 21 Feb 2018 14:41:20 GMT

The problem is that i want to send data via TCP.

(My IP: 141.79.36.115 / Port:53523 (variable) )

The RFID System wants to send me to the same IP address and the same port data. But via tSocketInput i define a different port.

Is there a solution for this?