Tell us about your skills in working with network technologies.

In working with network technologies in Go, I use the standard library net and net/http to create TCP/UDP clients and servers, as well as to work with the HTTP protocol. I can configure connections, manage timeouts, handle network errors, and implement protocols over TCP/UDP.

Example of a simple TCP server in Go:

package main

import (
    "fmt"
    "net"
)

func main() {
    ln, err := net.Listen("tcp", ":8080")
    if err != nil {
        panic(err)
    }
    defer ln.Close()

    for {
        conn, err := ln.Accept()
        if err != nil {
            fmt.Println("Connection error:", err)
            continue
        }
        go func(c net.Conn) {
            defer c.Close()
            buf := make([]byte, 1024)
            n, err := c.Read(buf)
            if err == nil {
                fmt.Println("Received:", string(buf[:n]))
                c.Write([]byte("Hello from the server!"))
            }
        }(conn)
    }
}

I am also familiar with concepts such as NAT, VPN, DNS, HTTP/2, TLS, and I know how to use tools for monitoring and debugging network connections.