ZeroMq IRC Log

Sunday November 6, 2011

[Time] Name	Message
[00:25] Deepak_Deepak	No I havent got the answer to my quesiont
[01:09] jhawk28	deepak_deepak: use 127.0.0.1 instead
[01:09] jhawk28	of localhost
[01:11] jhawk28	or if you are on linux, use the ipc transport (between processes) or inproc (in the same process, between threads)
[01:12] iFire	is json with schema a valid cheap protocol?
[01:12] jhawk28	cheap in what way?
[01:12] jhawk28	cheaper than XML
[01:13] iFire	http://unprotocols.org/blog:9
[01:13] iFire	jhawk28: cheaper than bit mangling every protocol element
[01:13] iFire	because you need to send a million messages per core
[01:13] jhawk28	yes, JSON would be considered cheap
[01:13] iFire	tnetstring seems simple though
[01:14] iFire	jhawk28: have you read the bridge parable on that page?
[01:14] iFire	http://unprotocols.org/blog:16
[01:14] jhawk28	yes, I have
[01:14] iFire	I'm going to use llvm's bitcode for nasty
[01:14] iFire	and structs for pure data
[01:15] jhawk28	I would recommend using protocol buffers
[01:15] iFire	jhawk28: he did mention that explicitl
[01:15] iFire	y
[01:15] iFire	by name
[01:15] iFire	You'll see people trying to use Cheap everywhere ("everything is an XML message!"), or Nasty for everything ("Our wire level protocol is 100% binary!"). Or, some intermediate solution that is neither Cheap, nor Nasty ("we use protobufs for everything!"). The results will be mediocre. Don't be afraid of going to extremes, when you're writing software that has to be extremely good.
[01:16] iFire	I'm going to use json schema until it's bad enough
[01:16] jhawk28	up to you, Ive had good success with protocol buffers
[01:17] iFire	jhawk28: I don't think protocol buffer is extreme enough ;P
[01:17] iFire	http://llvm.org/docs/BitCodeFormat.html
[01:18] iFire	jhawk28: the other problem is there's no lua protobuf
[01:18] iFire	that's really good
[01:18] iFire	because protobuf requires a schema
[01:18] iFire	and you can't stick it in the message
[01:19] iFire	in a standard way
[01:21] iFire	jhawk28: what are you up to?
[01:22] jhawk28	just watching a tv show
[01:22] iFire	with zmq
[01:22] jhawk28	using as a transport
[01:22] jhawk28	built a couple devices
[01:23] jhawk28	wrote a router
[01:23] jhawk28	started a pure Java impl of zeromq based on the zmtp
[01:23] iFire	jhawk28: are you aware of the vtx? https://github.com/pieterh/vtx
[01:24] iFire	it's a tunnelling of zmq to any protocol
[01:24] iFire	underlying protocol
[01:25] jhawk28	havent really seen it
[01:25] iFire	I want zmq to be under udp
[01:25] iFire	and not just PG<
[01:25] iFire	PGM
[01:26] jhawk28	I think they did some stuff under the SP protocol
[01:30] jhawk28	which may be that project
[01:56] Seta00	ugh, I'm having a hard time trying to find what's wrong with my application
[01:56] Seta00	no errors, netstat shows the connection has been established, PUBlisher sends messages and I don't receive them on the SUBscriber
[01:56] Seta00	:(
[02:05] jhawk28	sounds like you are not subscribing
[02:06] Seta00	I am
[02:10] jhawk28	do you have any sample code?
[02:13] Seta00	it's a bunch of code, I'll paste the relevant parts
[02:23] Seta00	ah, the problem is the actual data :)
[02:23] Seta00	or maybe not: zmq error 11: Resource temporarily unavailable
[02:24] jhawk28	to make sure its not the data, subscribe to all the data
[02:24] Seta00	it's not the data, it was actually failing on zmq_send
[02:24] Seta00	with that error
[02:25] JAVAZMQ	anywon?
[02:25] JAVAZMQ	wow
[02:25] JAVAZMQ	many
[02:26] jhawk28	hello
[02:26] jhawk28	Seta00: what binding are you using?
[02:26] Seta00	none
[02:26] Seta00	ZMQ 2.1.10
[02:26] JAVAZMQ	does anybody know that ZMQ PUB/SUB does not work with JAVA? I've tried to run example on the manual(weather pub/sub) but does not recieve any message.
[02:27] jhawk28	it does, I use it all the time
[02:32] jhawk28	Seta00: https://zeromq.jira.com/browse/LIBZMQ-269?page=com.atlassian.streams.streams-jira-plugin:activity-stream-issue-tab
[02:33] jhawk28	JAVAZMQ: do you get any error?
[02:33] JAVAZMQ	oh. I found the reason that I couldn't recv. any SUB messages. the recv. socket should "subscribe"! sorry for my novice question.
[02:33] jhawk28	happened to me a couple of times
[02:33] JAVAZMQ	thx jhawk28!
[02:34] Seta00	jhawk28: yeah I'm building from master now to test :)
[02:45] Seta00	can 3.0 talk to 2.1?
[02:48] Rotham	hey
[02:49] Rotham	having a hard time finding documentation on zmq Poller
[02:49] jhawk28	Seta00: no, 3.0 is not backwards compatible
[02:50] Seta00	a-ha, I was also linking against the wrong binary
[02:50] jhawk28	Rotham: there are some examples in the guide
[02:50] jhawk28	what do you need to know?
[02:50] Rotham	ah k cool
[02:50] Rotham	ill check that out
[02:51] Rotham	hm
[02:52] Rotham	just trying to understand what it does..
[02:52] jhawk28	it allows you to non busy poll multiple sockets
[02:53] jhawk28	like the Selector in Java
[02:53] jhawk28	or kpoll epoll
[02:55] jhawk28	http://api.zeromq.org/2-1:zmq-poll
[02:59] jhawk28	http://zguide.zeromq.org/page:all#Handling-Multiple-Sockets
[03:11] Rotham	thank you
[03:11] Rotham	that helps alot
[03:11] jhawk28	np
[03:35] dde	Has anyone tried to work with em-zeromq (0.2.1) and ffi-rzmq (0.9.0)? I'm getting a '/usr/local/rvm/gems/ruby-1.9.2-p180/gems/ffi-rzmq-0.9.0/lib/ffi-rzmq/socket.rb:387:in `getsockopt': wrong number of arguments (1 for 2) (ArgumentError)'
[09:34] No-Brainiac	hey guys, I have a question about C++Headerfiles. When I write zmq C++ Code I have to declare the variables, e.g. zmq::socket_t socket (context, ZMQ_REP); in the header. But i dont know how I correctly do this. Can anyone give me an example ? The Compiler always says thinks like "socket_t name no Type"
[09:50] No-Brainiac	can anyone help me with the declaration in c++ headerfiles ?
[09:58] Deepak_Deepak	thanks jHawk28.. But can you please answer why * is used then? what does it mean.. to bind to tcp://*:5000 as compared to tcp://localhost:5000 I would like to undestand it
[10:05] No-Brainiac	when u bind * instead of localhost the server gets the messages from all ips that send the message to port 5000 an when u tipe localhost u only get it from the localhost (but it can be that u have to write 127.0.0.1 instead of localhost )
[10:11] Deepak_Deepak	so why cant i open a :5000 for a pub socet and :5000 for s sub socet
[10:11] Deepak_Deepak	socket
[10:14] sustrik	No-Brainiac: you are missing zmq namespace
[10:14] sustrik	zmq::socket_t
[12:21] Deepak2	hello
[13:06] CIA-79	libzmq: 03Chuck Remes 07master * r93529d8 10/ (8 files in 5 dirs): Add zmq_getmsgopt to the API ...
[13:09] CIA-79	libzmq: 03Martin Sustrik 07master * r11e3198 10/ AUTHORS : Chuck Remeas added to the AUTHORS file ...
[16:27] nerus	hi
[16:28] nerus	I have an up and running paranoid pirate pattern up ( php client, python broker and a c++ backend)
[16:28] nerus	used the snippets from http://zguide.zeromq.org/page:all#Robust-Reliable-Queuing-Paranoid-Pirate-Pattern to get it up
[16:29] nerus	just wanted to know if there is a way by which I could record the broker to log which of the backend worker a particular request was sent
[16:29] nerus	assuming each request has a id/hash or some type of unique identifier
[16:29] nerus	?
[18:48] iFire	sustrik: ?
[19:22] CIA-79	pyzmq: 03Zbigniew JÄdrzejewski-Szmek 07master * ra51fa5d 10/ zmq/core/message.pyx : Fix AttributeError caused by missing threading._Event ...
[19:42] tarcieri	w00t
[19:42] technoweenie	tarcieri: are you doing a ruby interface to zmq?
[19:43] tarcieri	technoweenie: nah, I'm using ffi-rzmq
[19:43] technoweenie	oh right on
[19:43] tarcieri	what I'm doing is more like distributed Erlang... it's asynchronous DRb
[19:43] technoweenie	oh nice.

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Sunday November 6, 2011