Example of sending files for https://github.com/teloxide/teloxide/issues/384

main.rs

// [dependencies]
// reqwest = "0.11"
// teloxide = "0.4"
// tokio = { version = "1.6", features = ["macros", "rt-multi-thread"] }


#[tokio::main]
async fn main() {
    run().await;
}

async fn run() {
    use teloxide::requests::{Request, Requester};

    let pic_url =
        "https://cdn.discordapp.com/attachments/536882422848159784/542784769646264352/unknown.png";
    let token = "TOKEN";
    let chat = 218485655i64;

    let rsp = reqwest::get(pic_url).await.expect("Network Error");
    let body = rsp.bytes().await.expect("No body?");
    let pic = body.as_ref().to_vec();

    let bot = teloxide::Bot::new(token);

    bot.send_photo(chat, teloxide::types::InputFile::memory("unknown.png", pic))
        .send()
        .await
        .expect("Failed to send request");
}