Golang TCP client receiving/sending binary data

client.go

package main

import (
	"bytes"
	"encoding/binary"
	"fmt"
	"io"
	"log"
	"net"
)

type SentMessage struct {
	Version           int16
	TransmitterID     int32
	MessageType       int16
	DataType          int16
	Time              uint32
	SystolicPressure  uint16
	DiastolicPressure uint16
	Pulse             uint16
	CRC               uint16
}

type ReceivedMessage struct {
	Version    int16
	DataStatus int32
}

func main() {
	conn, err := net.Dial("tcp", "81.200.90.23:8585")
	if err != nil {
		log.Fatal(err)
	}

	msg := SentMessage{
		Version:           3,
		TransmitterID:     95263316,
		MessageType:       3,
		DataType:          3082,
		Time:              3822627258,
		SystolicPressure:  140,
		DiastolicPressure: 76,
		Pulse:             95,
		CRC:               56862,
	}
	err = binary.Write(conn, binary.BigEndian, msg)
	if err != nil {
		log.Fatal(err)
	}

	buf := make([]byte, 500)
	size, err := conn.Read(buf)
	if err != nil {
		if err == io.EOF {
			return
		}
		log.Fatal(err)
	}
	message := buf[:size]

	reader := bytes.NewBuffer(message)
	data := ReceivedMessage{}
	err = binary.Read(reader, binary.BigEndian, &data)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println("Version:", data.Version)
	fmt.Printf("DataStatus: 0x%08X\n", data.DataStatus)
}