communicating between golang and python via http binary data

main.go

package main

import (
	"crypto/rand"
	"encoding/binary"
	"log"
	"net/http"
)

// GenerateUint64 - generate a random uint64
func GenerateUint64() uint64 {
	buf := make([]byte, 8)
	rand.Read(buf) // Always succeeds, no need to check error
	return binary.LittleEndian.Uint64(buf)
}

func handler(w http.ResponseWriter, r *http.Request) {
	numberOfValues := 100
	uint64BytesSize := 8
	bufferSize := numberOfValues * uint64BytesSize

	buf := make([]byte, bufferSize)
	tmp := GenerateUint64()
	for index := 0; index < numberOfValues; index++ {
		binary.LittleEndian.PutUint64(buf, tmp)
		tmp = GenerateUint64()
	}

	w.Header().Set("Content-Type", "application/octet-stream")
	w.Write(buf)
}

func main() {
	http.HandleFunc("/", handler)
	log.Fatal(http.ListenAndServe(":8080", nil))
}

reader.py

# reader.py
# Read uint64 from http
import urllib.request, urllib.parse, urllib.error
from struct import unpack_from
# Read from the web server aka api
data = urllib.request.urlopen('http://localhost:8080').read()
offset = 0
for i in range(0,100):
    parsed_data = unpack_from('Q', data, offset=offset)
    print(parsed_data)
    # increase offset by byte size
    # in this case 8bytes uint64
    offset += 8