well known endpoint protocol

Cargo.lock

@@ -8,6 +8,17 @@ version = "1.0.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2cb2f989d18dd141ab8ae82f64d1a8cdd37e0840f73a406896cf5e99502fab61"
 
+[[package]]
+name = "async-trait"
+version = "0.1.63"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eff18d764974428cf3a9328e23fc5c986f5fbed46e6cd4cdf42544df5d297ec1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "atomic"
 version = "0.5.1"
@@ -196,6 +207,15 @@ dependencies = [
  "tracing-subscriber",
 ]
 
+[[package]]
+name = "lavina_proto"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "async-trait",
+ "serde",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -337,9 +357,9 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.49"
+version = "1.0.50"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57a8eca9f9c4ffde41714334dee777596264c7825420f521abc92b5b5deb63a5"
+checksum = "6ef7d57beacfaf2d8aee5937dab7b7f28de3cb8b1828479bb5de2a7106f2bae2"
 dependencies = [
  "unicode-ident",
 ]
@@ -457,9 +477,9 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "1.24.1"
+version = "1.24.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d9f76183f91ecfb55e1d7d5602bd1d979e38a3a522fe900241cf195624d67ae"
+checksum = "597a12a59981d9e3c38d216785b0c37399f6e415e8d0712047620f189371b0bb"
 dependencies = [
  "autocfg",
  "bytes",
@@ -488,9 +508,9 @@ dependencies = [
 
 [[package]]
 name = "toml"
-version = "0.5.10"
+version = "0.5.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1333c76748e868a4d9d1017b5ab53171dfd095f70c712fdb4653a406547f598f"
+checksum = "f4f7f0dd8d50a853a531c426359045b1998f04219d88799810762cd4ad314234"
 dependencies = [
  "serde",
 ]

Cargo.toml

@@ -1,3 +1,8 @@
+[workspace]
+members = [
+    "crates/*"
+]
+
 [package]
 name = "lavina"
 version = "0.1.0"

crates/proto/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "lavina_proto"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+anyhow = "1.0.68"
+async-trait = "0.1.63"
+serde = { version = "1.0.152", features = ["serde_derive"] }

crates/proto/src/lib.rs

@@ -0,0 +1,2 @@
+mod prelude;
+pub mod well_known;

crates/proto/src/prelude.rs

@@ -0,0 +1,3 @@
+pub type Result<T> = std::result::Result<T, anyhow::Error>;
+pub use async_trait::async_trait;
+pub use serde::{Deserialize, Serialize};

crates/proto/src/well_known.rs

@@ -0,0 +1,13 @@
+use crate::prelude::*;
+
+#[derive(Serialize, Deserialize)]
+pub struct ServerInfo {
+    pub name: String,
+    pub user_api_base_url: String,
+    pub fedi_api_base_url: String,
+}
+
+#[async_trait]
+pub trait WellKnown {
+    async fn well_known(&self) -> Result<ServerInfo>;
+}