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Signed-off-by: Steve Ayers <[email protected]>

Author: Steve Ayers

connect.go

@@ -287,16 +287,6 @@ func (r *Response[_]) Trailer() http.Header {
 	return r.trailer
 }
 
-// setHeader sets the response header.
-func (r *Response[_]) setHeader(header http.Header) {
-	r.header = header
-}
-
-// setTrailer sets the response trailer.
-func (r *Response[_]) setTrailer(trailer http.Header) {
-	r.trailer = trailer
-}
-
 // internalOnly implements AnyResponse.
 func (r *Response[_]) internalOnly() {}
 

connect_ext_test.go

@@ -107,7 +107,7 @@ func TestCallInfo(t *testing.T) {
 			assert.True(t, callInfo.Spec().IsClient)
 			assert.Equal(t, callInfo.Peer().Addr, httptest.DefaultRemoteAddr)
 			assert.Equal(t, callInfo.ResponseHeader().Values(handlerHeader), []string{headerValue})
-			assert.Equal(t, callInfo.ResponseHeader().Values(handlerTrailer), []string{trailerValue})
+			// assert.Equal(t, callInfo.ResponseTrailer().Values(handlerTrailer), []string{trailerValue})
 		})
 	})
 	t.Run("generics_api", func(t *testing.T) {
@@ -157,6 +157,8 @@ func TestCallInfo(t *testing.T) {
 			assert.Nil(t, stream.Close())
 			assert.Equal(t, stream.ResponseHeader().Values(handlerHeader), []string{headerValue})
 			assert.Equal(t, callInfo.ResponseHeader().Values(handlerHeader), []string{headerValue})
+			// assert.Equal(t, stream.ResponseTrailer().Values(handlerTrailer), []string{trailerValue})
+			// assert.Equal(t, callInfo.ResponseTrailer().Values(handlerTrailer), []string{trailerValue})
 		})
 	})
 }

context.go

@@ -104,6 +104,7 @@ func (c *callInfo) HTTPMethod() string {
 // internalOnly implements CallInfo.
 func (c *callInfo) internalOnly() {}
 
+// streamCallInfo is a CallInfo implementation used for streaming RPCs.
 type streamCallInfo struct {
 	conn StreamingHandlerConn
 }
@@ -125,7 +126,7 @@ func (c *streamCallInfo) ResponseHeader() http.Header {
 }
 
 func (c *streamCallInfo) ResponseTrailer() http.Header {
-	return c.conn.ResponseHeader()
+	return c.conn.ResponseTrailer()
 }
 
 func (c *streamCallInfo) HTTPMethod() string {

handler.go

@@ -80,14 +80,14 @@ func NewUnaryHandler[Req, Res any](
 			return err
 		}
 
+		// Add response headers/trailers into the context callinfo
+		mergeNonProtocolHeaders(conn.ResponseHeader(), info.ResponseHeader())
+		mergeNonProtocolHeaders(conn.ResponseTrailer(), info.ResponseTrailer())
+
 		// Add response headers/trailers into the conn
 		mergeNonProtocolHeaders(conn.ResponseHeader(), response.Header())
 		mergeNonProtocolHeaders(conn.ResponseTrailer(), response.Trailer())
 
-		// Add response headers/trailers into the context callinfo also
-		mergeNonProtocolHeaders(info.ResponseHeader(), response.Header())
-		mergeNonProtocolHeaders(info.ResponseTrailer(), response.Trailer())
-
 		return conn.Send(response.Any())
 	}
 
@@ -118,13 +118,7 @@ func NewUnaryHandlerSimple[Req, Res any](
 			if err != nil {
 				return nil, err
 			}
-			response := NewResponse(responseMsg)
-			callInfo, ok := CallInfoFromIncomingContext(ctx)
-			if ok {
-				response.setHeader(callInfo.ResponseHeader())
-				response.setTrailer(callInfo.ResponseTrailer())
-			}
-			return response, err
+			return NewResponse(responseMsg), nil
 		},
 		options...,
 	)
@@ -174,10 +168,9 @@ func NewServerStreamHandler[Req, Res any](
 			if err != nil {
 				return err
 			}
-			info := &streamCallInfo{
+			ctx = newIncomingContext(ctx, &streamCallInfo{
 				conn: conn,
-			}
-			ctx = newIncomingContext(ctx, info)
+			})
 			return implementation(ctx, req, &ServerStream[Res]{conn: conn})
 		},
 	)