From d999d4ba9f5b9e82af6fd1777ef0c4daed977623 Mon Sep 17 00:00:00 2001
From: MSP-Greg <Greg.mpls@gmail.com>
Date: Mon, 7 Sep 2020 21:31:35 -0500
Subject: [PATCH] Backport #2121

Co-authored-by: wjordan <will@code.org>
---
 lib/puma/client.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/puma/client.rb b/lib/puma/client.rb
index a6107cc94f..1e31d292c4 100644
--- a/lib/puma/client.rb
+++ b/lib/puma/client.rb
@@ -153,7 +153,7 @@ def try_to_finish
 
       begin
         data = @io.read_nonblock(CHUNK_SIZE)
-      rescue Errno::EAGAIN
+      rescue IO::WaitReadable
         return false
       rescue SystemCallError, IOError, EOFError
         raise ConnectionError, "Connection error detected during read"
@@ -351,7 +351,7 @@ def read_body
 
       begin
         chunk = @io.read_nonblock(want)
-      rescue Errno::EAGAIN
+      rescue IO::WaitReadable
         return false
       rescue SystemCallError, IOError
         raise ConnectionError, "Connection error detected during read"