92 lines
2.2 KiB
Go
92 lines
2.2 KiB
Go
package main
|
|
|
|
import (
|
|
"crypto/tls"
|
|
"flag"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"os"
|
|
"strings"
|
|
"time"
|
|
)
|
|
|
|
// MeasureTTFB measures the Time to First Byte for the given URL.
|
|
func MeasureTTFB(url string, cookie string) (int64, int, error) {
|
|
// Create a custom HTTP transport to allow measuring the TTFB.
|
|
transport := &http.Transport{
|
|
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
|
|
}
|
|
|
|
client := &http.Client{
|
|
Transport: transport,
|
|
}
|
|
|
|
// Create a new request.
|
|
req, err := http.NewRequest("GET", url, nil)
|
|
if err != nil {
|
|
return 0, 0, err
|
|
}
|
|
|
|
// If a cookie is provided, set it in the request header.
|
|
if cookie != "" {
|
|
// Clean up and format the cookie properly
|
|
cookie = strings.TrimSpace(cookie)
|
|
if !strings.Contains(cookie, "=") {
|
|
return 0, 0, fmt.Errorf("invalid cookie format")
|
|
}
|
|
req.Header.Set("Cookie", cookie)
|
|
}
|
|
|
|
// Record the start time.
|
|
start := time.Now()
|
|
|
|
// Perform the request.
|
|
resp, err := client.Do(req)
|
|
if err != nil {
|
|
return 0, 0, err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
// Measure the time taken to receive the first byte.
|
|
ttfb := time.Since(start).Milliseconds()
|
|
|
|
return ttfb, resp.StatusCode, nil
|
|
}
|
|
|
|
func main() {
|
|
// Define and parse command-line flags.
|
|
cookieFile := flag.String("c", "", "Path to file containing the authentication cookie")
|
|
flag.Parse()
|
|
|
|
// Check if the URL is provided as an argument.
|
|
if flag.NArg() != 1 {
|
|
fmt.Println("Usage: ttfb-go [-c cookieFile] <URL>")
|
|
os.Exit(1)
|
|
}
|
|
|
|
url := flag.Arg(0)
|
|
|
|
// Read the cookie from the specified file if provided.
|
|
var cookie string
|
|
if *cookieFile != "" {
|
|
data, err := ioutil.ReadFile(*cookieFile)
|
|
if err != nil {
|
|
fmt.Printf("Error reading cookie file: %v\n", err)
|
|
os.Exit(1)
|
|
}
|
|
cookie = strings.TrimSpace(string(data))
|
|
}
|
|
|
|
// Measure the TTFB.
|
|
ttfb, statusCode, err := MeasureTTFB(url, cookie)
|
|
if err != nil {
|
|
fmt.Printf("Error measuring TTFB: %v\n", err)
|
|
os.Exit(1)
|
|
}
|
|
|
|
// Print the HTTP status code and TTFB.
|
|
fmt.Printf("%d,%d\n", statusCode, ttfb)
|
|
}
|
|
|