Read vss.proto from the local repository

We now read `vss.proto` from the local repository instead of downloading
it from a specific commit on github.

We will use protocol versioning, tags, and releases to coordinate
clients and servers.

Author: tankyleo

Cargo.toml

@@ -35,7 +35,6 @@ log = { version = "0.4.29", default-features = false, features = ["std"]}
 
 [target.'cfg(genproto)'.build-dependencies]
 prost-build = { version = "0.11.3" }
-bitreq = { version = "0.3", default-features = false, features = ["std", "https"] }
 
 [dev-dependencies]
 mockito = "0.28.0"

build.rs

@@ -1,9 +1,7 @@
 #[cfg(genproto)]
 extern crate prost_build;
 #[cfg(genproto)]
-use std::io::Write;
-#[cfg(genproto)]
-use std::{env, fs, fs::File, path::Path};
+use std::{env, fs, path::Path};
 
 /// To generate updated proto objects:
 /// 1. Place `vss.proto` file in `src/proto/`
@@ -15,21 +13,7 @@ fn main() {
 
 #[cfg(genproto)]
 fn generate_protos() {
-	download_file(
-				"https://raw.githubusercontent.com/lightningdevkit/vss-server/022ee5e92debb60516438af0a369966495bfe595/proto/vss.proto",
-				"src/proto/vss.proto",
-		).unwrap();
-
 	prost_build::compile_protos(&["src/proto/vss.proto"], &["src/"]).unwrap();
 	let from_path = Path::new(&env::var("OUT_DIR").unwrap()).join("vss.rs");
 	fs::copy(from_path, "src/types.rs").unwrap();
 }
-
-#[cfg(genproto)]
-fn download_file(url: &str, save_to: &str) -> Result<(), Box<dyn std::error::Error>> {
-	let response = bitreq::get(url).send()?;
-	fs::create_dir_all(Path::new(save_to).parent().unwrap())?;
-	let mut out_file = File::create(save_to)?;
-	out_file.write_all(&response.into_bytes())?;
-	Ok(())
-}

src/types.rs

@@ -212,14 +212,16 @@ pub struct ListKeyVersionsRequest {
 #[allow(clippy::derive_partial_eq_without_eq)]
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct ListKeyVersionsResponse {
-	/// Fetched keys and versions.
+	/// Fetched keys and versions, ordered by creation time (newest first).
 	/// Even though this API reuses the `KeyValue` struct, the `value` sub-field will not be set by the server.
 	#[prost(message, repeated, tag = "1")]
 	pub key_versions: ::prost::alloc::vec::Vec<KeyValue>,
 	/// `next_page_token` is a pagination token, used to retrieve the next page of results.
 	/// Use this value to query for next-page of paginated `ListKeyVersions` operation, by specifying
 	/// this value as the `page_token` in the next request.
 	///
+	/// Following AIP-158 (<https://google.aip.dev/158>):
+	///
 	/// If `next_page_token` is empty (""), then the "last page" of results has been processed and
 	/// there is no more data to be retrieved.
 	///