diff --git a/src/mono/wasm/runtime/http.ts b/src/mono/wasm/runtime/http.ts
index 7404cefcb304ea..22d93a1a8af068 100644
--- a/src/mono/wasm/runtime/http.ts
+++ b/src/mono/wasm/runtime/http.ts
@@ -104,38 +104,37 @@ export async function http_wasm_get_streamed_response_bytes(res: ResponseExtensi
     // the bufferPtr is pinned by the caller
     const view = new Span(bufferPtr, bufferLength, MemoryViewType.Byte);
     return wrap_as_cancelable_promise(async () => {
-        if (!res.__chunk && res.body) {
+        if (!res.body) {
+            return 0;
+        }
+
+        if (!res.__reader) {
             res.__reader = res.body.getReader();
+        }
+
+        if (!res.__chunk) {
             res.__chunk = await res.__reader.read();
             res.__source_offset = 0;
         }
 
-        let target_offset = 0;
-        let bytes_read = 0;
-        // loop until end of browser stream or end of C# buffer
-        while (res.__reader && res.__chunk && !res.__chunk.done) {
-            const remaining_source = res.__chunk.value.byteLength - res.__source_offset;
-            if (remaining_source === 0) {
-                res.__chunk = await res.__reader.read();
-                res.__source_offset = 0;
-                continue;// are we done yet
-            }
-
-            const remaining_target = view.byteLength - target_offset;
-            const bytes_copied = Math.min(remaining_source, remaining_target);
-            const source_view = res.__chunk.value.subarray(res.__source_offset, res.__source_offset + bytes_copied);
-
-            // copy available bytes
-            view.set(source_view, target_offset);
-            target_offset += bytes_copied;
-            bytes_read += bytes_copied;
-            res.__source_offset += bytes_copied;
-
-            if (target_offset == view.byteLength) {
-                return bytes_read;
-            }
+        if (res.__chunk.done) {
+            return 0;
         }
-        return bytes_read;
+
+        const remaining_source = res.__chunk.value.byteLength - res.__source_offset;
+
+        if (remaining_source === 0) {
+            res.__chunk = await res.__reader.read();
+            res.__source_offset = 0;
+            return 0;
+        }
+
+        const bytes_copied = Math.min(remaining_source, view.byteLength);
+        const source_view = res.__chunk.value.subarray(res.__source_offset, bytes_copied);
+        view.set(source_view, 0);
+        res.__source_offset += bytes_copied;
+
+        return bytes_copied;
     });
 }