* lib/drb/drb.rb (error_print): Add verbose failure messages and

	  avoid infamous DRb::DRbConnError. [Feature #12101]



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53962 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 15 insertions, 7 deletions

diff --git a/lib/drb/drb.rb b/lib/drb/drb.rb
index 8011660156..d04ab3564d 100644
--- a/lib/drb/drb.rb
+++ b/lib/drb/drb.rb
@@ -1632,6 +1632,17 @@ module DRb
       include InvokeMethod18Mixin
     end
 
+    def error_print(exception)
+      exception.backtrace.inject(true) do |first, x|
+        if first
+          $stderr.puts "#{x}: #{exception} (#{exception.class})" 
+        else
+          $stderr.puts "\tfrom #{x}"
+        end
+        false
+      end
+    end
+
     # The main loop performed by a DRbServer's internal thread.
     #
     # Accepts a connection from a client, and starts up its own
@@ -1655,13 +1666,10 @@ module DRb
             succ = false
             invoke_method = InvokeMethod.new(self, client)
             succ, result = invoke_method.perform
-            if !succ && verbose
-              p result
-              result.backtrace.each do |x|
-                puts x
-              end
-            end
-            client.send_reply(succ, result) rescue nil
+            error_print(result) if !succ && verbose
+            client.send_reply(succ, result)
+          rescue Exception => e
+            error_print(e) if verbose
           ensure
             client.close unless succ
             if Thread.current['DRb']['stop_service']