v0.32.2

src/config/model.rs

@@ -136,8 +136,13 @@ pub struct Backend {
 pub enum UpstreamProtocol {
     #[default]
     Http1,
+    /// Legacy value `http2`: HTTPS uses ALPN H2/H1, HTTP uses H2C prior knowledge.
+    /// Retain its 0.32.2 meaning when loading unchanged saved configurations.
     Http2,
+    /// HTTPS negotiates H2/H1; plaintext uses H1 without H2C probing.
     Auto,
+    /// New explicit mode `h2`: require H2 for HTTPS and H2C for cleartext.
+    H2,
 }
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct Envelope {