fixup! fix: fix seeder for randomizing speed tests

config/config.go

@@ -5,15 +5,13 @@ import (
 	"flag"
 	"fmt"
 	"io"
-	"math/rand"
 	"net"
 	"net/http"
 	"os"
 	"path/filepath"
 	"strconv"
 	"strings"
 	"sync"
-	"time"
 
 	"github.com/imup-io/client/util"
 	log "golang.org/x/exp/slog"
@@ -24,7 +22,6 @@ var ImUpAPIHost = "https://api.imup.io"
 
 var (
 	setupFlags sync.Once
-	seedRandom sync.Once
 
 	allowlistedIPs               *string
 	apiKey                       *string
@@ -166,10 +163,6 @@ func New() (Reloadable, error) {
 	// do not instantiate a new copy of config, use the package level global
 	cfg = &config{}
 
-	seedRandom.Do(func() {
-		rand.Seed(time.Now().UTC().UnixNano())
-	})
-
 	setupFlags.Do(func() {
 		allowlistedIPs = flag.String("allowlisted-ips", "", "comma separated list of CIDR strings to match against host IP that determines whether speed and connectivity testing will be run, default is allow all")
 		apiKey = flag.String("key", "", "an api key associated with an imup organization")

helpers.go

@@ -9,6 +9,7 @@ import (
 
 // https://github.com/m-lab/ndt-server/blob/master/spec/ndt7-protocol.md#requirements-for-non-interactive-clients
 func sleepTime() time.Duration {
+	rand := rand.New(rand.NewSource(int64(time.Now().Nanosecond())))
 	t := rand.ExpFloat64() * 21600
 	if t < 2160 {
 		t = 2160