http://blog.gmane.org/gmane.network.zeromq.devel hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://comments.gmane.org/gmane.network.zeromq.devel/19145 <pre>Hi, I am trying to use ZMQ with PHP. The instructions at http://www.zeromq.org/bindings:php state Download the latest snapshot from http://snapshot.zero.mq/ Copy libzmq.dll into your php directory (e.g. C:\wamp\bin\php\php5.3.8\) Copy the appropriate version of php_zmq.dll to your php extension directory (e.g. C:\wamp\bin\php\php5.3.8\ext) Add the following line to your php.ini: extension=php_zmq.dll Restart your web server to pickup the ini changes I tried to get the .dll from the snapshot but cannot connect to http://snapsho.zero.mq Where can I get a copy of php_zmq.dll? Joyce ________________________________ This message is for the addressee's use only. It may contain confidential information. If you receive this message in error, please delete it and notify the sender. Tripp Lite disclaims all warranties and liabilities, and assumes no responsibility for viruses which may infect an email sent to you from Tripp Lite and which damage your electronic syst</pre> Joyce Norris 2013-05-20T22:05:41 http://comments.gmane.org/gmane.network.zeromq.devel/19142 <pre>what is the preferred mechanism for having threads talk to one another? the old way was for the main program to do the bind before spawning threads who do the connect, and passing that bind socket to teh thread who needs it. does this still work? the new meme talks about creating sockets within threads but it is awkward to arrange the bind first. ----------------------- Andrew Hume 623-551-2845 (VO and best) 973-236-2014 (NJ) andrew&lt; at &gt;research.att.com _______________________________________________ zeromq-dev mailing list zeromq-dev&lt; at &gt;lists.zeromq.org http://lists.zeromq.org/mailman/listinfo/zeromq-dev </pre> Andrew Hume 2013-05-20T15:29:26 http://comments.gmane.org/gmane.network.zeromq.devel/19141 <pre>Hi all, This is the second version of my previous message. I hope this will help to understand better. I'm just developing a C# client application that requests some data to some servers. I'm using ZeroMQ Client/Server pattern to perform this solution. The servers are linked by wireless connection, so the connections are not always guaranteed. I noticed some problem using ZeroMQ when some communications expired with the timeout. In order to debug this problem, I created a simple project that call a no-connected server. http://pastebin.com/b5EnLaL4 Using a port sniffer, I noticed that a huge quantity of ports are opened and not closed, as you can see by the attached file (shooted after few requests). Only few ports refer to the server address while the others refer to localhost. Is it correct or something is wrong? My software scenario is: - Windows 7 Home Edition 64 bit - Microsoft C# Express 2012 - clrzmq version 3.0 downloaded by NuGet. - libzmq.dll compiled in C++ on my machine. U</pre> Federico Spagnolo 2013-05-20T08:47:54 http://comments.gmane.org/gmane.network.zeromq.devel/19138 <pre>Hi, I read pdf(s) and code to see if zmq could fit my current use cases I've got some problems to understand the memory management: - for "send": ok it seems that i can manage my own list of buffers and be informed with the free callback the the buffer is not used by the lib. There is the malloc for the content_t part of a msg... - for the "recv": even if i prepare a msg with a data buffer, it is freed before the reading (i see msg_close when i follow the source code) so i wonder how can I alloc all the memory at start of my app, and say to zmq lib "work with that" can you light me? with my best regards, and my apologies for my experimental english michel pacilli _______________________________________________ zeromq-dev mailing list zeromq-dev&lt; at &gt;lists.zeromq.org http://lists.zeromq.org/mailman/listinfo/zeromq-dev </pre> mitch p 2013-05-19T19:49:25 http://comments.gmane.org/gmane.network.zeromq.devel/19137 <pre>Hello All, Is it possible to enable built-in trace/debug level logging for ZeroMQ? Thanks, Erwin Karbasi AT&amp;T, Senior Software Architect _______________________________________________ zeromq-dev mailing list zeromq-dev&lt; at &gt;lists.zeromq.org http://lists.zeromq.org/mailman/listinfo/zeromq-dev </pre> Erwin Karbasi 2013-05-19T09:53:06 http://comments.gmane.org/gmane.network.zeromq.devel/19133 <pre>i thought i understood ZMQ_PAIR sockets, but apparently not. the man page mentions that they are experimental, but otherwise doesn't really say how they work. what are the semantics? ----------------------- Andrew Hume 623-551-2845 (VO and best) 973-236-2014 (NJ) andrew&lt; at &gt;research.att.com _______________________________________________ zeromq-dev mailing list zeromq-dev&lt; at &gt;lists.zeromq.org http://lists.zeromq.org/mailman/listinfo/zeromq-dev </pre> Andrew Hume 2013-05-19T05:55:14 http://comments.gmane.org/gmane.network.zeromq.devel/19132 <pre>I haven't been checking every platform, but master requires stdint.h which only hit Microsoft with MSVC 2010SP1. https://github.com/zeromq/libzmq/commit/b0b8ab27c5a3734aa2e9103a61e1a850e14d7dd3 </pre> Steven McCoy 2013-05-19T03:22:13 http://comments.gmane.org/gmane.network.zeromq.devel/19131 <pre>Hi, I appear to have a issue with PUB/SUB apparently 'dropping' the first byte. Setup:   * Basic PUB/SUB running on same machine over TCP/localhost.   * Message has first 4 bytes as subscription id, rest payload Problem:  * On dev box runs fine  * On prod box the subscriber sees no messages   * The reason is that the received message is 'missing' the first byte Logs: Machine 1 (Ubuntu 12.04 64, JZMQ/ZMQ 3.2.0) runs fine, e.g.: 01:19:10:042 DEBUG [qtp1866572071-24] Publishing: [0, 0, 0, 13, -49, 0, 0, 1, 62, -72, -90, -29, 63, 7, -108, -53, 63, -12, -122, -13, 110, -8, 5, 96, -53, 64, 89, -9, -101, -128, 35, -90, -50, -53, 0, 0, 0, 0, 0, 0, 0, 0, -53, 64, 68, 0, 0, 0, 0, 0, 0, 0] 01:19:10:042 DEBUG [SubscriptionDataHandlerThread] Received data: [0, 0, 0, 13, -49, 0, 0, 1, 62, -72, -90, -29, 63, 7, -108, -53, 63, -12, -122, -13, 110, -8, 5, 96, -53, 64, 89, -9, -101, -128, 35, -90, -50, -53, 0, 0, 0, 0, 0, 0, 0, 0, -53, 64, 68, 0, 0, 0, 0, 0, 0, 0] Machine 2 (Ubuntu 12.04 64, JZMQ/ZMQ 3.2.2) an</pre> Mark Sutheran 2013-05-18T17:56:05 http://comments.gmane.org/gmane.network.zeromq.devel/19128 <pre> Hi, all. I noticed that the swap option are disappeared in zmq3.2. So if I want to transmit files with zmq, the memory will increase too much, so, how to resolve this problem in zmq3.2? Thank you very much. Best Regards. Richard </pre> 张龙华 2013-05-17T17:31:01 http://comments.gmane.org/gmane.network.zeromq.devel/19108 <pre>storing say a million msgs in its outgoing buffer and when the client has finally caught up and consumed all msgs? I am seeing that the memory usage goes up as the client is slow or not there but even after the client comes back and consumes all msgs.. the memory stays where it was.. any comments? thanks, </pre> Nishant Mittal 2013-05-16T14:07:30 http://comments.gmane.org/gmane.network.zeromq.devel/19102 <pre>Hello zmq guys, I am writing this letter to confirm whether zmq PUB/SUB socket tcp connection have no timeout mechanism. Recently, I am coding with ZMQ3.2.2 API. In my program, there are two nodes, one is publisher, the other is subscriber, communicated with zmq tcp PUB/SUB sockets. These two nodes are running on virtual machine. When the publisher's VM is RESET(code restart), the subscriber won't received any message from the restarted publisher. However, restart the publisher program, reboot in guest os, disconnect interface for a period of time won't lead to such result, subscriber always reconnects to the new started publisher. With tcpdump, we noticed that 1) restart the publisher program or reboot the guest os, makes publisher zmq send a FIN to terminate the connection. And when publisher restarts, subscriber will reconnect to it automatically. 2) Reset the VM of publisher, no FIN is sent out and when publisher restarts, the subscribe do nothing, no communication is observed, so the subscribe </pre> 许海玲 2013-05-16T03:05:31 http://comments.gmane.org/gmane.network.zeromq.devel/19098 <pre>I have been doing some development of 0mq-based C (console) applications in cygwin, and there are two oddities that I would like to comment on. I would like to know if anybody else sees these issues: 1. Behavior of Control-C: for certain operations (I believe mostly when calling zmq_recv()), Control-C does not abort the operation. The only way to exit the application is killing the process. I am properly handling the return value of zmq_recv(). 2. This may have nothing to do with 0mq proper, but sometimes I get the message "fatal error - cygheap base mismatch detected" when running my application. Right after that, I re-run it and it works ok. My environment is: * Windows 7 64 bit (all patches applied as of today). * Cygwin 1.7.18(0.263/5/3) (updated yesterday, with gcc 4.5.3). * 0mq 3.3.0 (cloned from github yesterday) compiled with Visual C++ 2010 Express. Thanks for any hints, -- Gonzalo Diethelm DCV Chile ----------------------------------------- De</pre> gonzalo diethelm 2013-05-15T16:26:56 http://comments.gmane.org/gmane.network.zeromq.devel/19089 <pre>Hi, I want to use zeromq for the following scenario, but can't recognize the proper pattern for this. Server listens to port 5555. When a client connects to server, thread A handles this connection and from now on, every request from client goes to thread A, and thread A sends a reply to the client. Currently, I am using normal req/rep pattern with Router/Dealer on top to handle multithreading. but every request from a client is round robined and load balanced between thread. What I need, is that when a thread answers the first request from a client, from now on, the same thread answer the rest of the requests from that client. (like having a persistent connection with client). Is this scenario possible with ZMQ? if yes, how? Thank you very much for your assistance, Jerry_______________________________________________ zeromq-dev mailing list zeromq-dev&lt; at &gt;lists.zeromq.org http://lists.zeromq.org/mailman/listinfo/zeromq-dev </pre> Hamed Afshar 2013-05-15T12:14:06 http://comments.gmane.org/gmane.network.zeromq.devel/19088 <pre>boy, i haven't been paying attention! what is teh strength of zmq_recvmsg being "deprecated"? should i worry that in fact it is going away? or is it just a poor choice of words? ----------------------- Andrew Hume 623-551-2845 (VO and best) 973-236-2014 (NJ) andrew&lt; at &gt;research.att.com _______________________________________________ zeromq-dev mailing list zeromq-dev&lt; at &gt;lists.zeromq.org http://lists.zeromq.org/mailman/listinfo/zeromq-dev </pre> Andrew Hume 2013-05-15T09:26:58 http://comments.gmane.org/gmane.network.zeromq.devel/19085 <pre>Dear Sir I am trying to use the ZeroMQ-Jzmq in my Android project. I had followed the all steps suggested in http://www.zeromq.org/build:android. I had successfully created the zmq.jar and libjzmq.so on the fedora linux os. But when I use these in my Android application I am getting following error. 05-15 12:26:15.034: I/dalvikvm(781): Could not find method org.zeromq.ZMQ.getVersionString, referenced from method com.example.zmq2test.MainActivity.onCreate 05-15 12:26:15.054: W/dalvikvm(781): VFY: unable to resolve static method 3570: Lorg/zeromq/ZMQ;.getVersionString ()Ljava/lang/String; 05-15 12:26:15.054: D/dalvikvm(781): VFY: replacing opcode 0x71 at 0x000a 05-15 12:26:15.114: D/AndroidRuntime(781): Shutting down VM 05-15 12:26:15.124: W/dalvikvm(781): threadid=1: thread exiting with uncaught exception (group=0x40a71930) 05-15 12:26:15.155: E/AndroidRuntime(781): FATAL EXCEPTION: main 05-15 12:26:15.155: E/AndroidRuntime(781): java.lang.NoClassDefFoundError: org.zeromq.ZMQ 05-15 12:26:15.155: E/Androi</pre> Ranjeet Kumar 2013-05-15T07:14:23 http://comments.gmane.org/gmane.network.zeromq.devel/19078 <pre>In our application server, we have multiple threads servicing web requests. At the end of each request, the thread emits a simple text-based string indicating the activity performed by the request, like a journal entry. We want these threads to use ZMQ publishers to send this activity message to ZMQ subscribers listening on other machines. The QoS we desire is "best effort" only, some messages could be dropped, but each message must be published to ALL subscribers available. Single Publisher per App server instance We thought about initializing a single ZMQ publisher on each app server instance and synchronizing access to it using locks. But based on the ZMQ guide, synchronizing thread access to sockets is not a good choice, so we abandoned this option, not to mention a single instance could easily become a bottleneck. Create Publisher On-Demand, Send, then Destroy In this approach, the executing thread creates a ZMQ publisher on-demand, publishes the message, then closes the publisher; all other </pre> etc1 2013-05-14T00:12:44 http://comments.gmane.org/gmane.network.zeromq.devel/19076 <pre>Hi! I have seen in the documentation that the fd field in zmq_pollitem_t should be ignored if a ZMQ socket is also present in the structure. I have thought of using this field to store additional information for the socket. I poll many sockets that all of them use the same function to be processed but the arguments differ, so I use the fd as a pointer to an structure where I store this arguments. Is there any other option to do this polling scheme? Best regards, Juan </pre> Juan López Rubio 2013-05-13T16:05:10 http://comments.gmane.org/gmane.network.zeromq.devel/19071 <pre>While I'm complaining about stuff missing from the current API, let me mention this: It would be nice to be able to get at some information about what peers are currently connected to a socket, and how close each peer is to hitting its high water mark (i.e., how many queued messages). It would also be nice to get connect/disconnect and muted/unmuted notifications somehow. These could be reported via zmq_poll() (either as ZMQ_POLLERR or a new ZMQ_POLLPEERSTATUS or something like that), or if you want to get really fancy, report them back to the app via a special inproc PUB/SUB socket. I like the latter, but it's more like a high-level API while the rest of libzmq is currently more like a low-level socket API. A higher-level library could always build the latter on top of the former. By the way, my complaining is a form of flattery. I wouldn't bother complaining about something I didn't really want to use. ZMQ is pretty cool and has a lot of promise, it just has a little more maturing to do. </pre> Randall Nortman 2013-05-14T12:54:00 http://comments.gmane.org/gmane.network.zeromq.devel/19068 <pre>Hello, list. I've wrote fairly simple program to check if 0mq socket is usable with external eventloop http://pastebin.com/St0DJ4jX We have main thread runs epoll for socketpair handle and for a 0mq socket. Another thread ('buzzer') writes something via 0mq and via socketpair. I would expect that epoll fires once for socketpait and once for 0mq socket, while in reality I can see that 0mq shows some activity three times == $ ./zmq_epoll hello from buzzer fd=16, j=0 zmq events: EPOLLIN sent something via 0mq fd=16, j=0 zmq events: EPOLLIN 0mq:zmq sent something via socketpair fd=13, j=0 socketpair events: EPOLLIN socket_pair:something fd=16, j=0 zmq events: EPOLLIN timeout timeout timeout timeout timeout timeout == May be I am doing something wrong? The assumption that two 'extra' events caused by connect and close seems wrong (at least not all 'extra' events are always caused by connect/close things). My concern is such spurious events are harmful from performance point of view. Explanation (or l</pre> Ilja Golshtein 2013-05-14T12:11:12 http://comments.gmane.org/gmane.network.zeromq.devel/19067 <pre>Hi All, Inspired by latest talking on securing zeromq I set down and developed DTLS over NetMQ. The API is very similar to the CurveZMQ, it's not yet merge to the main repository. You can find the source code at https://github.com/somdoron/netmq/tree/Security/src/NetMQ/Security. I covered most of the TLS 1.2 features, the main features from DTLS is supporting unordered messages and only using block ciphers. Because the similarity between NetMQ and clrzmq it can easily be merged into clrzmq as well. Also developing this library in another language with openssl cryptography shouldn't be hard (I'm using .net native cryptography library). It's still in early stage and need more testing. You can read more about the library in my blog: http://somdoron.com/2013/05/securing-netmq/. Doron _______________________________________________ zeromq-dev mailing list zeromq-dev&lt; at &gt;lists.zeromq.org http://lists.zeromq.org/mailman/listinfo/zeromq-dev </pre> Doron Somech 2013-05-14T11:57:23 http://comments.gmane.org/gmane.network.zeromq.devel/19061 <pre>Hi, I have build libzmq 3.2.3 for debian 7, and install libpgm 5.1 The application fail in a SIGFPE exception, does the libpgm is too old for ZMQ ? Thanks Program received signal SIGFPE, Arithmetic exception. [Switching to Thread 0x7ffff7fec720 (LWP 32202)] 0x00007ffff6efaef8 in ?? () from /usr/lib/libpgm-5.1.so.0 (gdb) bt #0 0x00007ffff6efaef8 in ?? () from /usr/lib/libpgm-5.1.so.0 #1 0x00007ffff6f1776a in pgm_init () from /usr/lib/libpgm-5.1.so.0 #2 0x00007ffff7bc8ba9 in zmq_ctx_new () from /usr/lib/x86_64-linux-gnu/libzmq.so.3 #3 0x00007ffff7bc8ea9 in zmq_init () from /usr/lib/x86_64-linux-gnu/libzmq.so.3 #4 0x000000000041b855 in mqinit () #5 0x000000000043136b in Server_init () #6 0x00000000004124df in final_setup () #7 0x0000000000412d4f in taskmain () #8 0x000000000041d16d in ?? () #9 0x00007ffff717f020 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 #10 0x0000000000000000 in ?? () </pre> William Martin 2013-05-14T08:37:17 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.network.zeromq.devel