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-rw-r--r--manual/cowboy_req.md4
1 files changed, 4 insertions, 0 deletions
diff --git a/manual/cowboy_req.md b/manual/cowboy_req.md
index 7b3b199..00bfd64 100644
--- a/manual/cowboy_req.md
+++ b/manual/cowboy_req.md
@@ -23,6 +23,10 @@ All functions which perform an action should only be called once.
This includes reading the request body or replying. Cowboy will
generally throw an error on the second call.
+It is highly discouraged to pass the Req object to another process.
+Doing so and calling `cowboy_req` functions from it leads to
+undefined behavior.
+
Types
-----