Curl command to see messages being sent from test program to webserver on linux

I just installed curl on a Linux machine. I have a webserver and web page. I also have a test program that will send rti messages to the web server.

I want to be able to use curl to look at messages that are being received by the web server and were by the test program. I am using localHost:8080

I am new to curl but have heard that I should be able to see the messages. What command syntax should I use with curl

thanks