InShade

use reqwest::header;
use reqwest::ClientBuilder;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
   println!("\n[ - - - - - - - - -");

   let mut headers = header::HeaderMap::new();
   headers.insert("X-MY-HEADER", header::HeaderValue::from_static("asdfgh"));
   headers.insert("COOKIE", header::HeaderValue::from_static("__test=123456"));

InShade

use reqwest::header;
use reqwest::header::{HeaderMap};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
   println!("\n[ - - - - - - - - -");
   //
   let mut headers = header::HeaderMap::new();
   headers.insert("X-MY-HEADER", header::HeaderValue::from_static("qwerty"));
   headers.insert("COOKIE", header::HeaderValue::from_static("__test=5f07fc74273ecfcb7706d17a86a11a4e"));