status/scanner/tcp.go

package scanner

import (
	"net"
	"time"
)

func CheckTCPOpen(host string) (bool, string) {
	// Just check if the connection is successful
	timeout := time.Second
	conn, err := net.DialTimeout("tcp", host, timeout)

	if err != nil || conn == nil {
		// If timeout or anything else
		return false, err.Error()
	}

	defer conn.Close()

	return true, "OK"
}