pyzmq


Python 3.6 ZeroMQ (PyZMQ) asyncio pub sub Hello World

最后都变了- 提交于 2020-01-23 03:09:06
问题 I've just started with ZeroMQ and I'm trying to get a Hello World to work with PyZMQ and asyncio in Python 3.6. I'm trying to de-couple the functionality of a module with the pub/sub code, hence the following class setup: Edit 1 : Minimized example Edit 2 : Included solution, see answer down for how. import asyncio import zmq.asyncio from zmq.asyncio import Context # manages message flow between publishers and subscribers class HelloWorldMessage: def __init__(self, url='127.0.0.1', port='5555

Does PyZMQ handle creating threads for each new client connection?

只谈情不闲聊 提交于 2020-01-14 13:24:45
问题 I'm using PyZMQ to create a request/reply server, and I'm trying to figure out if the act of creating a thread for each new client connection is handled by PyZMQ automatically. Ultimately, I'm trying to figure out if a request from one client that takes a long time to reply to will block requests from all other clients. Normally, I would call accept on a Python socket instance, block until a new connection is made, and handle any new connections in separate threads. However, PyZMQ sockets do

Does PyZMQ handle creating threads for each new client connection?

前提是你 提交于 2020-01-14 13:24:11
问题 I'm using PyZMQ to create a request/reply server, and I'm trying to figure out if the act of creating a thread for each new client connection is handled by PyZMQ automatically. Ultimately, I'm trying to figure out if a request from one client that takes a long time to reply to will block requests from all other clients. Normally, I would call accept on a Python socket instance, block until a new connection is made, and handle any new connections in separate threads. However, PyZMQ sockets do

Does PyZMQ handle creating threads for each new client connection?

风流意气都作罢 提交于 2020-01-14 13:24:07
问题 I'm using PyZMQ to create a request/reply server, and I'm trying to figure out if the act of creating a thread for each new client connection is handled by PyZMQ automatically. Ultimately, I'm trying to figure out if a request from one client that takes a long time to reply to will block requests from all other clients. Normally, I would call accept on a Python socket instance, block until a new connection is made, and handle any new connections in separate threads. However, PyZMQ sockets do

How to monitor whether a ZeroMQ server exists?

霸气de小男生 提交于 2020-01-14 03:29:10
问题 I want to check the existence ( state ) of a server before I send a ZeroMQ request, but I have no idea how to do it. 回答1: Q : I want to check the existence ( state ) of a server before I send a ZeroMQ request The solution is to setup and use the services of a zmq_socket_monitor() // Read one event off the monitor socket; return value and address // by reference, if not null, and event number by value. Returns -1 // in case of error. static int get_monitor_event ( void *monitor, int *value,

Pulling requests from multiple clients with ZMQ

ぐ巨炮叔叔 提交于 2020-01-13 18:07:05
问题 I have a couple of workers waiting to do some jobs. I see that in the PULL/PUSH pattern I need to give the workers the ip address (using the tcp protocol) of the client, so it can listen to requests from there. However, in my case I want to have a lot of clients as well, coming from different IPs with requests... So basically I dont really have a static IP to bind the worker to PULL from. Am I using the wrong pattern or is there a way to do it correctly? 回答1: You should consider using the

PyZMQ PUSH socket does not block on send()

∥☆過路亽.° 提交于 2020-01-13 06:51:10
问题 The ZMQ_PUSH section in ZMQ socket documentation say that calling send() on PUSH socket, which has no downstream nodes should block until at least one node becomes available. However, running the following code does not seem to block on send() . Also, the process does not exit until I run a matching PULL socket and receive the messages: import zmq import time zmq_context = zmq.Context() print '> Creating a PUSH socket' sender = zmq_context.socket(zmq.PUSH) print '> Connecting' sender.connect(

How to have limited ZMQ (ZeroMQ - PyZMQ) queue buffer size in python?

断了今生、忘了曾经 提交于 2020-01-01 19:00:08
问题 I use pyzmq library with pub/sub in python . I have some rapid ZMQ publisher by .connect() method script and a slower ZMQ subscriber by .bind() method script. Then after few minutes my subscriber gets old published data from publishers ( due ZMQ buffer ). My Question: Is there an approach to manage ZMQ queue buffer size? (set a limited buffer) Note : I don't want to use ZMQ PUSH/PULL. Note : I've read this post, but this approach clear buffer only: clear ZMQ buffer Note : I tried with high

Can ZMQ publish message to specific client by pub-sub socket?

六眼飞鱼酱① 提交于 2019-12-25 04:43:12
问题 I am using pub/Sub Socket and currently the server subscribe byte[0] (all topics) while client subscribe byte[16] - a specific header as topic However, I cannot stop client to subscribe byte[0] which can receive all other messages. My application is a like a app game which has one single server using ZMQ as connection and many clients have a ZMQ sockets to talk with server. What pattern or socket I should use in this case? Thanks 回答1: " ... cannot stop client to subscribe byte[0] which can

Can ZMQ publish message to specific client by pub-sub socket?

Deadly 提交于 2019-12-25 04:43:04
问题 I am using pub/Sub Socket and currently the server subscribe byte[0] (all topics) while client subscribe byte[16] - a specific header as topic However, I cannot stop client to subscribe byte[0] which can receive all other messages. My application is a like a app game which has one single server using ZMQ as connection and many clients have a ZMQ sockets to talk with server. What pattern or socket I should use in this case? Thanks 回答1: " ... cannot stop client to subscribe byte[0] which can

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