Do not raise an exception on a closed DRb socket

This rescues some exceptions that could happen with a closed or
shutdown DRb socket. This can prevent the server from
exiting if an client socket is closed directly after it is
accepted.

Fixes [Bug #8039]

1 files changed, 15 insertions, 0 deletions

diff --git a/test/drb/test_drb.rb b/test/drb/test_drb.rb
index 4e8f5cb0ec..b4399573aa 100644
--- a/test/drb/test_drb.rb
+++ b/test/drb/test_drb.rb
@@ -327,4 +327,19 @@ class TestBug4409 < Test::Unit::TestCase
   end
 end
 
+class TestDRbTCP < Test::Unit::TestCase
+  def test_immediate_close
+    server = DRb::DRbServer.new('druby://:0')
+    host, port, = DRb::DRbTCPSocket.send(:parse_uri, server.uri)
+    socket = TCPSocket.open host, port
+    socket.shutdown
+    socket.close
+    client = DRb::DRbTCPSocket.new(server.uri, socket)
+    assert client
+    client.close
+    server.stop_service
+    server.thread.join
+  end
+end
+
 end