Here’s the code again, for your convenience. And, when I step through this,
the error in the server occurs when the client process terminates, not when
it stops its local DRb service session.
THANKS,
Ken.
-------------------- drbsvr.rb
drb server
require ‘drb’
class MySvr
def svc(stop)
puts “MySvr::svc called.”
return “Service completed.”
end
end
$stdout.sync=true;
while true
begin
puts “Starting MySvr…”
DRb.start_service(“druby://localhost:9000”, MySvr.new());
DRb.thread.join;
puts “MySvr has terminated”
rescue DRb::DRbConnError
puts “Rescued DRbConnectionClosed: #{$!}”
end
end
---------------drbclnt.rb
drb client
require ‘drb’
begin
DRb.start_service(nil,nil);
svr = DRbObject.new(nil, “druby://localhost:9000”)
10.times do
puts svr.svc(false);
end
DRb.stop_service;
rescue DRb::DRbConnError
puts “Rescued #{$!}”
end
------------Client output
Debug.rb
Emacs support available.
H:/qbbpo/src/vendornet/etc/
(rdb:1) c
Service completed.
Service completed.
Service completed.
Service completed.
Service completed.
Service completed.
Service completed.
Service completed.
Service completed.
Service completed.
Press any key to continue
------------ Server output & DRb error
(rdb:1) c
Starting MySvr…
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
e:/tools/ruby/lib/ruby/site_ruby/1.8/drb/drb.rb:104: connection closed' (DRb:: RbConnError) from e:/tools/ruby/lib/ruby/site_ruby/1.8/drb/drb.rb:596:in start’
from e:/tools/ruby/lib/ruby/site_ruby/1.8/drb/drb.rb:596:in run' from e:/tools/ruby/lib/ruby/site_ruby/1.8/drb/drb.rb:549:in initialize
from e:/tools/ruby/lib/ruby/site_ruby/1.8/drb/drb.rb:737:in `new'
from e:/tools/ruby/lib/ruby/site_ruby/1.8/drb/drb.rb:737:in
`start_serv
ce’
from H:/qbbpo/src/vendornet/etc/drbsvr.rb:17
e:/tools/ruby/lib/ruby/site_ruby/1.8/drb/drb.rb:104:
raise(DRbConnError, ’
onnection closed’) if sz.nil?
(rdb:3)
“Ken Hilton” kenosis@comcast.net wrote in message
news:iStmc.42859$I%1.2775243@attbi_s51…
Greetings,
Can anyone explain to me why this very simple little DRb client server
pair
generates a DRb::DRbConnError when the client terminates? I’ve checked
out
the books and the samples and I can’t see what I’m missing. I’m running
Ruby 1.8.1 on Win2000 and WinXP. The problem reproduces w/the pair
running
on the same machine or (with the host id modified) when each is running on
separate machines.
Instructions: Run drbsvr.rb first, then run the drbclnt.rb. The output I
get from ruby follows below.
PS. I am unable to rescue the error that was raised by DRb, which BTW
puzzles me further.
Thanks for any help you can lend.
Ken.
drb server
require ‘drb’
class MySvr
def svc
puts “MySvr::svc called.”
return “Service completed.”
end
end
$stdout.sync=true;
while true
begin
puts “Starting MySvr…”
DRb.start_service(“druby://localhost:9000”, MySvr.new());
DRb.thread.join;
DRb.stop_service;
rescue DRb::DRbConnError
puts “Rescued DRbConnectionClosed: #{$!}”
end
end
drb client
require ‘drb’
DRb.start_service(nil,nil);
svr = DRbObject.new(nil, “druby://localhost:9000”)
10.times do
puts svr.svc();
end
DRb.stop_service;
Output:(rdb:1) c
Starting MySvr…
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
MySvr::svc called.
e:/tools/ruby/lib/ruby/site_ruby/1.8/drb/drb.rb:104: connection closed' (DRb::D RbConnError) from e:/tools/ruby/lib/ruby/site_ruby/1.8/drb/drb.rb:596:in start’
···
from e:/tools/ruby/lib/ruby/site_ruby/1.8/drb/drb.rb:596:in `run'
from e:/tools/ruby/lib/ruby/site_ruby/1.8/drb/drb.rb:549:in
`initialize’
from e:/tools/ruby/lib/ruby/site_ruby/1.8/drb/drb.rb:737:in `new'
from e:/tools/ruby/lib/ruby/site_ruby/1.8/drb/drb.rb:737:in
`start_servi
ce’
from H:/qbbpo/src/vendornet/etc/drbsvr.rb:17
e:/tools/ruby/lib/ruby/site_ruby/1.8/drb/drb.rb:104:
raise(DRbConnError, ‘c
onnection closed’) if sz.nil?
(rdb:3)
