feat: eip712domain_info API Endpoint

Signed-off-by: Arvin Morawej <[email protected]>

Author: Arvmor

tap_aggregator/Cargo.toml

@@ -13,6 +13,7 @@ path = "src/main.rs"
 
 [dependencies]
 alloy.workspace = true
+alloy-sol-types ={ version = "0.8.21", features = ["eip712-serde"]}
 anyhow.workspace = true
 axum = { version = "0.7.5", features = [
     "http1",

tap_aggregator/src/server.rs

@@ -78,6 +78,11 @@ pub trait Rpc {
     #[method(name = "api_versions")]
     fn api_versions(&self) -> JsonRpcResult<TapRpcApiVersionsInfo>;
 
+    /// Returns the EIP-712 domain separator information used by this server.
+    /// The client is able to verify the signatures of the receipts and receipt aggregate vouchers.
+    #[method(name = "eip712domain_info")]
+    fn eip712_domain_info(&self) -> JsonRpcResult<Eip712Domain>;
+
     /// Aggregates the given receipts into a receipt aggregate voucher.
     /// Returns an error if the user expected API version is not supported.
     #[method(name = "aggregate_receipts")]
@@ -289,6 +294,10 @@ impl RpcServer for RpcImpl {
         Ok(JsonRpcResponse::ok(tap_rpc_api_versions_info()))
     }
 
+    fn eip712_domain_info(&self) -> JsonRpcResult<Eip712Domain> {
+        Ok(JsonRpcResponse::ok(self.domain_separator.clone()))
+    }
+
     fn aggregate_receipts(
         &self,
         api_version: String,