I have spring boot application 2.5.8 that uses embedded Tomcat. This server listens to port 8081.
When a client establishes TCP connection with my server, it works ok.
But when client is trying simultaniously to setablish 2 connections from different ports - one connection is established. But the second connection is not established. In wireshark I see the next:
Connection from port 56542 is established, but connection from port 64005 is never established.
What could be a reason? How to solve this issue?