From e9122e3317e1a9741d6e8baec9f7012f40a22947 Mon Sep 17 00:00:00 2001
From: Piotr Sikora <piotrsikora@google.com>
Date: Wed, 11 Nov 2020 21:08:56 +0000
Subject: [PATCH] Always process HTTP headers before processing HTTP body.

Signed-off-by: Piotr Sikora <piotrsikora@google.com>
---
 src/context.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/context.cc b/src/context.cc
index 33fab486..f1cdcc6f 100644
--- a/src/context.cc
+++ b/src/context.cc
@@ -622,6 +622,12 @@ FilterHeadersStatus ContextBase::convertVmCallResultToFilterHeadersStatus(uint64
       result > static_cast<uint64_t>(FilterHeadersStatus::StopAllIterationAndWatermark)) {
     return FilterHeadersStatus::StopAllIterationAndWatermark;
   }
+  if (result == static_cast<uint64_t>(FilterHeadersStatus::StopIteration)) {
+    // Always convert StopIteration (pause processing headers, but continue processing body)
+    // to StopAllIterationAndWatermark (pause all processing), since the former breaks all
+    // assumptions about HTTP processing.
+    return FilterHeadersStatus::StopAllIterationAndWatermark;
+  }
   return static_cast<FilterHeadersStatus>(result);
 }