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package main
import (
"context"
"encoding/json"
"flag"
"fmt"
"github.com/hawkinsw/goresponsiveness/mc"
_ "io"
"io/ioutil"
_ "log"
"net/http"
"time"
)
type ConfigUrls struct {
SmallUrl string `json:"small_https_download_url"`
LargeUrl string `json:"large_https_download_url"`
UploadUrl string `json:"https_upload_url"`
}
type Config struct {
Version int
Urls ConfigUrls `json:"urls"`
}
func (c *Config) String() string {
return fmt.Sprintf("Version: %d\nSmall URL: %s\nLarge URL: %s\nUpload URL: %s", c.Version, c.Urls.SmallUrl, c.Urls.LargeUrl, c.Urls.UploadUrl)
}
var (
// Variables to hold CLI arguments.
configHost = flag.String("config", "networkquality.example.com", "name/IP of responsiveness configuration server.")
configPort = flag.Int("port", 4043, "port number on which to access responsiveness configuration server.")
debug = flag.Bool("debug", false, "Enable debugging.")
)
func main() {
flag.Parse()
configHostPort := fmt.Sprintf("%s:%d", *configHost, *configPort)
configUrl := fmt.Sprintf("https://%s/config", configHostPort)
configClient := &http.Client{}
resp, err := configClient.Get(configUrl)
if err != nil {
fmt.Printf("Error connecting to %s: %v\n", configHostPort, err)
return
}
jsonConfig, err := ioutil.ReadAll(resp.Body)
if err != nil {
fmt.Printf("Error reading content downloaded from %s: %v\n", configUrl, err)
return
}
var config Config
err = json.Unmarshal(jsonConfig, &config)
if err != nil {
fmt.Printf("Error parsing configuration returned from %s: %v\n", configUrl, err)
return
}
if *debug {
fmt.Printf("Configuration: %s\n", &config)
}
time.Sleep(4 * time.Second)
mcs := make([]*mc.LoadBearingConnection, 4)
for i := range mcs {
mcs[i] = &mc.LoadBearingConnection{Path: config.Urls.LargeUrl}
mcCtx := context.Background()
if !mcs[i].Start(mcCtx) {
fmt.Printf("Error starting %dth MC!\n", i)
return
}
}
time.Sleep(4 * time.Second)
for i := range mcs {
mcs[i].Stop()
fmt.Printf("mc[%d] read: %d\n", i, mcs[i].Downloaded())
}
time.Sleep(4 * time.Second)
}
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