How can I add/change/delete session's headers

As I wrote in the title, I wanna change the headers after defining session. Is this possible? This is my code:

package main

import (
    "fmt"
    "io"
    "log"
    "net/url"

    http "github.com/bogdanfinn/fhttp"
    tls_client "github.com/bogdanfinn/tls-client"
)

func CreateSession() tls_client.HttpClient {
    baseHeader := http.Header{
        "authority":          {"hcaptcha.com"},
        "accept":             {"application/json"},
        "accept-language":    {"en-US,en;q=0.9"},
        "content-length":     {"0"},
        "content-type":       {"text/plain"},
        "origin":             {"https://newassets.hcaptcha.com"},
        "referer":            {"https://newassets.hcaptcha.com/"},
        "sec-ch-ua":          {`"Chromium";v="112", "Not)A;Brand";v="24", "Google Chrome";v="112"`},
        "sec-ch-ua-mobile":   {"?0"},
        "sec-ch-ua-platform": {`"Windows"`},
        "sec-fetch-dest":     {"empty"},
        "sec-fetch-mode":     {"cors"},
        "sec-fetch-site":     {"same-site"},
        "user-agent":         {"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36"},
        http.HeaderOrderKey: {
            "authority",
            "accept",
            "accept-language",
            "content-length",
            "content-type",
            "origin",
            "referer",
            "sec-ch-ua",
            "sec-ch-ua-mobile",
            "sec-ch-ua-platform",
            "content-length",
            "sec-fetch-dest",
            "sec-fetch-mode",
            "sec-fetch-site",
            "user-agent",
        },
    }

    options := []tls_client.HttpClientOption{
        tls_client.WithTimeoutSeconds(30),
        tls_client.WithClientProfile(tls_client.Chrome_112),
        tls_client.WithNotFollowRedirects(),
        tls_client.WithDefaultHeaders(baseHeader),
    }

    client, err := tls_client.NewHttpClient(tls_client.NewNoopLogger(), options...)
    if err != nil {
        log.Println(err)
    }

    return client

}
func main() {
    session := CreateSession()

    params := url.Values{}

    params.Add("v", "19148ad")
    params.Add("host", "accounts.hcaptcha.com")
    params.Add("sitekey", "a5f74b19-9e45-40e0-b45d-47ff91b7a6c2")
    params.Add("sc", "1")
    params.Add("swa", "1")
    params.Add("spst", "1")

    query := params.Encode()

    req, err := http.NewRequest(http.MethodPost, "https://httpbin.org/post?"+query, nil)

    if err != nil {
        log.Fatal(err)
        return
    }

    resp, err := session.Do(req)

    if err != nil {
        log.Fatal(err)
        return
    }

    defer resp.Body.Close()

    bodyText, err := io.ReadAll(resp.Body)

    if err != nil {
        log.Fatal(err)
        return
    }

    fmt.Printf("%s\n", bodyText)

}

For example, I wanna change only the content-type value, how can I do that?

bogdanfinn / tls-client

How can I add/change/delete session's headers #74