Odtnhj

So I've seen several posts saying you're supposed to put the targets in a temp file and the body in a .json file, but I need to send lots of random data to my site, and ideally I don't want to be constantly writing new random data to these files --so I'd like to do it all in one file. If this is just impossible and I have to use multiple files, please let me know.

All I'm trying to do right now is send a POST request to a webpage that is simply a form with 4 inputs: title, number, volume, and year. I have the following code, but right now it's not sending values. It's sending a payload, but one that has no values. Meaning that a key and value "" keep getting stored in my map on the backend. Can anyone see the reason it's sending blanks? Could anyone tell me how I should go about fixing it?

package main

import (
 "encoding/json"
 "fmt"
 "time"

 vegeta "github.com/tsenart/vegeta/lib"
)

func NewCustomTargeter() vegeta.Targeter 
 return func(tgt *vegeta.Target) error 
 if tgt == nil 
 return vegeta.ErrNilTarget
 

 tgt.Method = "POST"

 tgt.URL = "http://localhost:8080/create.html"

 payload := map[string]string
 "title": "junk",
 "number": "junk2",
 "volume": "junk3",
 "year": "junk4",
 
 body, _ := json.Marshal(payload)
 tgt.Body = byte(body)
 return nil
 


func main() 
 rate := vegeta.RateFreq: 100, Per: 2 * time.Second
 duration := 10 * time.Second
 targeter := NewCustomTargeter()
 attacker := vegeta.NewAttacker()
 var metrics vegeta.Metrics
 for res := range attacker.Attack(targeter, rate, duration, "Load Test") 
 metrics.Add(res)
 
 metrics.Close()
 fmt.Printf("%+v n", metrics)

You need to do few stuff to make attacker able to send data in FormData format.

First, set the Content-type header value to application/x-www-form-urlencoded. You might need to import net/http package.

header := http.Header
header.Set("Content-type", "application/x-www-form-urlencoded")
tgt.Header = header

Then, set put the data into url.Values format. Pass the encoded value of it into tgt.Body. You also need to import net/url package.

form := url.Values
form.Set("title", "junk")
form.Set("number", "junk2")
form.Set("volume", "junk3")
form.Set("year", "junk4")

tgt.Body = byte(form.Encode())

Additional notes

On the data preparation, we can also use map literal style.
But since url.Values is an alias of map[string]string (not map[string]string),
might need some adjustment.

form := url.Values
 "title": string"junk",
 "number": string"junk2",
 "volume": string"junk3",
 "year": string"junk4",