header_host : x-forwarded-host or host from http HeaderMap

#[derive(Debug)]
pub struct HeaderNoHost;

impl std::fmt::Display for HeaderNoHost {
  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
    write!(f, "no host")
  }
}

impl std::error::Error for HeaderNoHost {}

pub fn host(headers: &http::HeaderMap) -> Result<&str, HeaderNoHost> {
  let host = if let Some(host) = headers.get("x-forwarded-host") {
    host
  } else if let Some(host) = headers.get("host") {
    host
  } else {
    Err(HeaderNoHost)?;
    unreachable!();
  }
  .to_str();
  match host {
    Ok(host) => Ok(host),
    Err(_) => Err(HeaderNoHost),
  }
}

#[cfg(feature = "tld")]
pub fn tld(headers: &http::HeaderMap) -> Result<&str, HeaderNoHost> {
  Ok(xtld::tld(host(headers)?))
}

About

This project is an open-source component of i18n.site ⋅ Internationalization Solution.

• i18 : MarkDown Command Line Translation Tool

  The translation perfectly maintains the Markdown format.

  It recognizes file changes and only translates the modified files.

  The translated Markdown content is editable; if you modify the original text and translate it again, manually edited translations will not be overwritten (as long as the original text has not been changed).

• i18n.site : MarkDown Multi-language Static Site Generator

  Optimized for a better reading experience

关于

本项目为 i18n.site ⋅ 国际化解决方案 的开源组件。

• i18 : MarkDown命令行翻译工具

  翻译能够完美保持 Markdown 的格式。能识别文件的修改，仅翻译有变动的文件。

  Markdown 翻译内容可编辑；如果你修改原文并再次机器翻译，手动修改过的翻译不会被覆盖（如果这段原文没有被修改）。

• i18n.site : MarkDown多语言静态站点生成器 为阅读体验而优化。