Fix for quarkusio#34632 to prevent race condition on adding headers i…

…f already added
bcluap · Jul 17, 2023 · 10ac0ea · 10ac0ea
1 parent d903356
commit 10ac0ea
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/.../src/main/java/org/jboss/resteasy/reactive/server/vertx/ResteasyReactiveOutputStream.java b/.../src/main/java/org/jboss/resteasy/reactive/server/vertx/ResteasyReactiveOutputStream.java
@@ -226,10 +226,12 @@ private void prepareWrite(ByteBuf buffer, boolean finished) throws IOException {
         if (!committed) {
             committed = true;
             if (finished) {
-                if (buffer == null) {
-                    context.serverResponse().setResponseHeader(HttpHeaderNames.CONTENT_LENGTH, "0");
-                } else {
-                    context.serverResponse().setResponseHeader(HttpHeaderNames.CONTENT_LENGTH, "" + buffer.readableBytes());
+                if (context.serverResponse().getResponseHeader(HttpHeaderNames.CONTENT_LENGTH.toString()) == null) {
+                    if (buffer == null) {
+                        context.serverResponse().setResponseHeader(HttpHeaderNames.CONTENT_LENGTH, "0");
+                    } else {
+                        context.serverResponse().setResponseHeader(HttpHeaderNames.CONTENT_LENGTH, "" + buffer.readableBytes());
+                    }
                 }
             } else {
                 var contentLengthSet = contentLengthSet();