JMeter is generally used to test the HTTP protocol, I first tested the socket protocol, POS transmission message is 8583, the protocol belongs to the socket, is also a TCP protocol, the network has LR how to test 8583 messages, I studied how to use JMeter to test, Here is my research results for your reference
1, first open the \apache-jmeter-3.1\bin\jmeter.propertles file, modify the Jmeter.propertles in the "TCP Sampler Configuration" content, see the drawings, add " Tcp.handler=binarytcpclientimpl "This line
2. Open JMeter, new thread group, add TCP Sampler in sampler, add result tree
3, fill in the value of the TCP sampler, server IP address, server port number, newspaper style (message content must be 16, jmeter default Send message content is 16, 8583 message the contents of each domain can find the development of children's shoes to assist, you can also grab the bag to get, recommended grab bag tool "Wireshark")
When you're done, you can run it and see if the information returned by the result tree is correct.
As for the content of the message is how to do their own way, I am using the "Wireshark" to grasp the package, this tool Baidu has, or relatively easy to use, the same principle, can be QQ, and various uses of the TCP protocol C/S architecture program or b/S architecture program to test
jmeter+8583 Message pressure test