From 2cb690419314a287e3d83ee339aad4b7f0718293 Mon Sep 17 00:00:00 2001
From: Jameson Nash <vtjnash@gmail.com>
Date: Thu, 29 Jul 2021 12:05:08 -0400
Subject: [PATCH] add stream shutdown and support half-duplex operation
 (JuliaLang/julia#40783)

Fixes one of the issues mentioned in JuliaLang/julia#24526
---
 src/process_messages.jl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/process_messages.jl b/src/process_messages.jl
index 8d5dac5af571e9..732b972858dc97 100644
--- a/src/process_messages.jl
+++ b/src/process_messages.jl
@@ -230,8 +230,8 @@ function message_handler_loop(r_stream::IO, w_stream::IO, incoming::Bool)
             deregister_worker(wpid)
         end
 
-        isopen(r_stream) && close(r_stream)
-        isopen(w_stream) && close(w_stream)
+        close(r_stream)
+        close(w_stream)
 
         if (myid() == 1) && (wpid > 1)
             if oldstate != W_TERMINATING