httpcan 0.5.4

A simple HTTP Request & Response Service, with httpbin compatibility
Documentation 
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use super::*;

pub async fn headers_handler(
    req: HttpRequest,
    config: web::Data<AppConfig>,
) -> Result<HttpResponse> {
    let headers: HashMap<String, String> = req
        .headers()
        .iter()
        .map(|(name, value)| (name.to_string(), value.to_str().unwrap_or("").to_string()))
        .collect();

    // Filter out reverse proxy and CDN headers, plus custom exclusions
    let filtered_headers = filter_headers(headers, &config.exclude_headers);

    Ok(HttpResponse::Ok().json(json!({
        "headers": sort_hashmap(filtered_headers)
    })))
}

pub async fn ip_handler(req: HttpRequest) -> Result<HttpResponse> {
    let connection_info = req.connection_info();
    let origin = connection_info.realip_remote_addr().unwrap_or("127.0.0.1");

    Ok(HttpResponse::Ok().json(json!({
        "origin": origin
    })))
}

pub async fn user_agent_handler(req: HttpRequest) -> Result<HttpResponse> {
    let user_agent = req
        .headers()
        .get("user-agent")
        .and_then(|v| v.to_str().ok())
        .unwrap_or("");

    Ok(HttpResponse::Ok().json(json!({
        "user-agent": user_agent
    })))
}