/
measurer_upload.go
105 lines (87 loc) · 2.29 KB
/
measurer_upload.go
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package ookla
import (
"context"
"fmt"
"io"
"io/ioutil"
"net/http"
stdURL "net/url"
"strings"
"time"
"github.com/bejaneps/speedtest/internal/measurement"
"github.com/bejaneps/speedtest/internal/pkg/random"
"golang.org/x/sync/errgroup"
)
const uploadSize = 100_000
// defaultUploadFunc is a variable to wrap upload function
// for deterministic results
var defaultUploadFunc = upload
// MeasureUpload measures upload speed per second using Ookla's speedtest.net API
func (c *Client) MeasureUpload(ctx context.Context) (
uploadRate measurement.BitRate,
err error,
) {
servers, err := c.getServersDetails(ctx)
if err != nil {
return 0, err
}
// for each server calculate upload speeds
// and take average number
avgUploadRate := 0.0
for _, server := range servers {
url := server.URL
downloadRate, err := c.measureUpload(ctx, url)
if err != nil {
return 0, err
}
avgUploadRate += downloadRate
}
avgUploadRate = avgUploadRate / float64(len(servers))
return measurement.BitRate(avgUploadRate), nil
}
func (c *Client) measureUpload(ctx context.Context, url string) (float64, error) {
eg := errgroup.Group{}
start := time.Now()
for i := 0; i < workload; i++ {
eg.Go(func() error {
return defaultUploadFunc(ctx, c.doer, url)
})
}
if err := eg.Wait(); err != nil {
return 0, err
}
end := time.Now()
return uploadSize * bitsInByte * workload / end.Sub(start).Seconds(), nil
}
// upload uploads random content to provided url
func upload(ctx context.Context, doer HTTPDoer, url string) error {
values := stdURL.Values{}
randString := random.String(uploadSize)
values.Add("content", randString)
req, err := http.NewRequestWithContext(
ctx,
http.MethodPost,
url,
strings.NewReader(values.Encode()),
)
if err != nil {
return fmt.Errorf("failed to create request: %w", err)
}
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
resp, err := doer.Do(req)
if err != nil {
return fmt.Errorf("failed to send request: %w", err)
}
defer func() {
if err := resp.Body.Close(); err != nil {
fmt.Printf("failed to close response body: %v\n", err)
}
}()
_, err = io.Copy(ioutil.Discard, resp.Body)
if err != nil {
// just log this error
// as it's not very important
fmt.Printf("failed to copy response body: %v\n", err)
}
return nil
}