status/scanner/tcp.go

package scanner

import (
	"net"
)

func CheckTCPOpen(ctx Context, host string) (bool, string) {
	// Just check if the connection is successful
	d := net.Dialer{}
	conn, err := d.DialContext(ctx, "tcp", host)

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

	defer conn.Close()

	return true, "OK"
}