From 48cd0a0ded9e89576f6d4e6684d0d8ee27492f7a Mon Sep 17 00:00:00 2001
From: Dirkjan Ochtman <dirkjan@ochtman.nl>
Date: Thu, 18 May 2023 10:42:27 +0200
Subject: [PATCH] Defer serialization of JoseJson data

---
 src/lib.rs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index a9d1be8..7a7e7f3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -372,7 +372,7 @@ impl Client {
             .method(Method::POST)
             .uri(url)
             .header(CONTENT_TYPE, JOSE_JSON)
-            .body(body)
+            .body(Body::from(serde_json::to_vec(&body)?))
             .unwrap();
 
         Ok(self.client.request(request).await?)
@@ -420,7 +420,7 @@ impl Key {
         &self,
         payload: Option<&impl Serialize>,
         protected: Header<'_>,
-    ) -> Result<Body, Error> {
+    ) -> Result<JoseJson, Error> {
         let protected = base64(&protected)?;
         let payload = match payload {
             Some(data) => base64(&data)?,
@@ -429,11 +429,11 @@ impl Key {
 
         let combined = format!("{protected}.{payload}");
         let signature = self.sign(combined.as_bytes())?;
-        Ok(Body::from(serde_json::to_vec(&JoseJson {
+        Ok(JoseJson {
             protected,
             payload,
             signature: BASE64_URL_SAFE_NO_PAD.encode(signature.as_ref()),
-        })?))
+        })
     }
 }