Support for IMAP IDLE in net/imap

[Abhishiv Saxena]

[Note: parts of this message were removed to make it a legal post.]

Ok, I have been suck on it for hours. I thought net/imap.rb with ruby 1.9
supported the idle command, but not yet.

Can anyone help me in implementing that? From
here<http://www.ruby-forum.com/topic/50828>,
I though this would work:

class Net::IMAP
def idle
cmd = "IDLE"
synchronize do
tag = generate_tag
put_string(tag + " " + cmd)
put_string(CRLF)
end
end

def done
cmd = "DONE"
synchronize do
put_string(cmd)
put_string(CRLF)
end
end
end

But, when i issue imap.idle, it return true, but i have to press return
twice to get the server response. And there's no notification for new
messages.

?> imap.idle
C: RUBY0005 IDLE
=> true?>
?> S: + idling

 

[Eric Hodel]

Ok, I have been suck on it for hours. I thought net/imap.rb with
ruby 1.9
supported the idle command, but not yet.

Can anyone help me in implementing that?

I have a working IDLE method, but it's not handy. Ill post it in a bit.

 

[Eric Hodel]

Ok, I have been suck on it for hours. I thought net/imap.rb with
ruby 1.9
supported the idle command, but not yet.

Can anyone help me in implementing that?

NOTE: There's no need to post to the mailing list and the forum, they
both come to the same place.

Try this:

require 'net/imap'

class Net::IMAP

##
# Sends an IDLE command that waits for notifications of new or
expunged
# messages. Yields responses from the server during the IDLE.
#
# Use +break+ in the response handler to leave IDLE.

def idle(&response_handler)
raise LocalJumpError, "no block given" unless response_handler

response = nil

synchronize do
tag = Thread.current[:net_imap_tag] = generate_tag
put_string "#{tag} IDLE#{CRLF}"

add_response_handler response_handler

begin
response = get_tagged_response tag
rescue LocalJumpError # can't break cross-threads or something
ensure
unless response then
put_string "DONE#{CRLF}"
response = get_tagged_response tag
end

remove_response_handler response_handler
end
end

response
end

end

 

[Abhishiv Saxena]

Eric, Thanks a lot that works like a charm.

imap.idle { |resp|
puts "Mailbox now has #{resp.data} messages"
}

 

[Eric Hodel]

Eric, Thanks a lot that works like a charm.

imap.idle { |resp|
puts "Mailbox now has #{resp.data} messages"
}

Careful, you'll get both EXIST and EXPUNGE responses, so be sure to
subtract when appropriate. Also note that EXPUNGE shifts all your
recorded UIDs down by one. See RFC 3501 for all the crazy details