"java.net.SocketException: Socket is closed" while launching JMeter GUI application - jmeter-5.0

While launching JMeter batch file throwing below exception
Tried different solutions but no luck

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Spring Integration SFTP Endpoint Polling Issue

Everything is working normally with my SFTP InboundChannelAdapter , but every now and then it stop polling due to multiple login failures to the sftp server. SFTP server does go down a lot in infrastructure. Is there a solution to prevent SFTP InboundChannelAdapter from dying ?
Also, Have been seeing this message a lot in the logs "Caught an exception, leaving main loop due to SSH_MSG_DISCONNECT". What might be the issue ?

Spamming logs for "Monitor thread successfully connected to server" from MongoDB java driver

I was given a Spring application to work on and upon running it on my local, I noticed a continuous spamming (every 10s) of below on console
Monitor thread successfully connected to server with description ServerDescription {address=some_replica_member_name.mongodb.net:27017, type=REPLICA_SET_PRIMARY, state=CONNECTED..
I am aware that it is used to poll the server to check its status but in all the other applications I've worked with, I've never seen such log being spammed unless there is actual connection going on. What gives? Setup is just
spring.data.mongodb.uri=mongodb+srv://user:xxx#some.mongo.host.net/some_db

RAP Application Load Testing with JMeter does not work, why?

I tried to "load testing" my simple rap workbench application, which deployed on local server, but this does not work. I get error code 403, session timeout. I followed to this steps on Eclipse Wiki, but it is not works in my case.
Here are some snapshots, to understand what my problem is:
Here is my HTTP Request
HTTP Request Recorded by JMeter (RAP/LoadTesting)

I sent a HTTP request. There is an error in View Results Tree. What wrong am I doing?

I tried many different url but always getting same error. I am new in Jmeter and testing. Java is istalled in am computer.
Your test looks good, just click on the Facebook Home Page in the Listener to see the summary. My expectation is that connection cannot be established i.e. you're sitting behind a corporate firewall
In general,the fastest and the easiest way of getting a JMeter test script "skeleton" is recording using HTTP(S) Test Script Recorder. Check out JMeter Proxy Step by Step guide for instructions.
You can also consider using an alternative solution for recording a JMeter test, it has so called "SmartJMX" mode - automatic correlation of all dynamic parameters. See How to Cut Your JMeter Scripting Time by 80% for details
Now it is working perfect. I could not find why it was not running properly earlier. I did not made any changes.
Check following:
If you are seeing socket connection error thne, If you are behind proxy, launch JMeter with -H server -P Port option (so that JMeter redirects the request.)
Change implementation to Java from httpclient4.

jmeter server communication issues

I am running jmeter on a powerful server in distributed mode and trying connect to it from the GUI on my local machine. Everything works OK and when i select remote server run and tail the jmeter logs on the server it goes through the starting tests...running test.... etc but it then says connection refused on * ...*
This is my local machine so I suspect that the tests are being run on the server and then the results are being piped back to the client and this is where the problems are.
So I have one way communication where my client GUI can send commands to the server but the server cannot send them back to my client PC
Any ideas what might be going on?
Many Thanks
i think the idea behind jmeter in your use-case would be to skip the "native" gui that interacts with the server. you will have to implement jmeter samplers that act just as the gui would - this includes e.g. handshakes etc.
for example, a session-id would be kept alive and passed from sampler to sampler to simulate the frontend..

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