Send a TCP/UDP request to STUN server using Kotlin
A STUN (Session Traversal Utilities for NAT) server is a network protocol that assists in establishing reliable and secure network connections between clients and servers, especially when clients are behind NAT (Network Address Translation). By helping clients discover their public IP addresses and NAT type, a STUN server simplifies the process of establishing network connections and facilitates online communication. When a client sends a request to a STUN server, the server replies with the client's public IP address and port, enabling the client to connect to the server quickly. Additionally, a STUN server can identify whether a client is behind a symmetric or full-cone NAT, which is crucial for determining the type of connection that can be established. Implementing a STUN server can lead to improved user experience, increased reliability, and faster network connections, making it a critical tool for online communication. JSTUN is a Java library that provides a lightweight a...