1 files changed, 9 insertions, 1 deletions
diff --git a/lib/webrick/server.rb b/lib/webrick/server.rb
index 52a09f5186..2d678273e5 100644
--- a/lib/webrick/server.rb
+++ b/lib/webrick/server.rb
@@ -295,7 +295,15 @@ module WEBrick
           end
           if sock.respond_to?(:sync_close=) && @config[:SSLStartImmediately]
             WEBrick::Utils.timeout(@config[:RequestTimeout]) do
-              sock.accept # OpenSSL::SSL::SSLSocket#accept
+
+              # we must call OpenSSL::SSL::SSLSocket#accept_nonblock until
+              # it stop returning wait_* symbols:
+              case ret = sock.accept_nonblock(exception: false)
+              when :wait_readable, :wait_writable
+                sock.to_io.__send__(ret)
+              else
+                break
+              end while true
             end
           end
           call_callback(:AcceptCallback, sock)