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package client
import (
"bufio"
"crypto/tls"
"crypto/x509"
_ "embed"
"fmt"
"log"
"os"
"strings"
"time"
)
//go:embed server.crt
var certPEM []byte
func Run() {
certPool := x509.NewCertPool()
if !certPool.AppendCertsFromPEM(certPEM) {
log.Fatalln("failed to append server certificate")
}
tlsConfig := &tls.Config{
RootCAs: certPool,
ServerName: "localhost",
}
log.Println("client started, waiting for user input...")
for {
fmt.Print("> ")
input, _ := bufio.NewReader(os.Stdin).ReadString('\n')
input = strings.TrimSpace(input)
if input == ":q" || input == "exit" || input == "quit" {
break
}
err := processRequest(input, tlsConfig)
if err != nil {
log.Println(err)
}
}
}
func processRequest(request string, tlsConfig *tls.Config) error {
conn, err := tls.Dial("tcp4", ":7223", tlsConfig)
if err != nil {
return fmt.Errorf("error establishing connection with server: %v", err)
}
defer conn.Close()
conn.SetDeadline(time.Now().Add(time.Second))
log.Println("established connection with server:", conn.RemoteAddr().String())
_, err = conn.Write([]byte(request))
if err != nil {
return fmt.Errorf("error sending request: %v", err)
}
buffer := make([]byte, 1024)
n, err := conn.Read(buffer)
if err != nil {
return fmt.Errorf("error receiving response: %v", err)
}
log.Println("server response:", string(buffer[:n]))
return nil
}
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