forked from Deuxfleurs/garage
Add some documentation
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1 changed files with 9 additions and 1 deletions
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@ -58,7 +58,15 @@ async fn handler(
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Ok(Response::new(Body::from("hello world\n")))
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}
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/// Extract host from the authority section given by the HTTP host header
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///
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/// The HTTP host contains both a host and a port.
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/// Extracting the port is more complex than just finding the colon (:) symbol.
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/// An example of a case where it does not work: [::1]:3902
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/// Instead, we use the Uri module provided by Hyper that correctl parses this "authority" section
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fn authority_to_host(authority: &str) -> Result<String, Error> {
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// Hyper can not directly parse authority section so we build a fake URL
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// that contains our authority section
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let mut uri_str: String = "fake://".to_owned();
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uri_str.push_str(authority);
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@ -66,7 +74,7 @@ fn authority_to_host(authority: &str) -> Result<String, Error> {
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Ok(uri) => {
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let host = uri
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.host()
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.ok_or(Error::BadRequest(format!("Unable to extract host from authority as string")))?;
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.ok_or(Error::BadRequest(format!("Unable to extract host from authority")))?;
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Ok(String::from(host))
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}
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_ => Err(Error::BadRequest(format!("Unable to parse authority (host HTTP header)"))),
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