Centos下安装zmq库及pyzmq

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Centos下安装zmq库及pyzmq

1. ZeroMQ简介

ZMQ（ØMQ、ZeroMQ, 0MQ）看起来像是一套嵌入式的网络链接库，但工作起来更像是一个并发式的框架。它提供的套接字可以在多种协议中传输消息，如线程间、进程间、TCP、广播等。你可以使用套接字构建多对多的连接模式，如扇出、发布-订阅、任务分发、请求-应答等。ZMQ的快速足以胜任集群应用产品。它的异步I/O机制让你能够构建多核应用程序，完成异步消息处理任务。ZMQ有着多语言支持，并能在几乎所有的操作系统上运行。ZMQ是iMatix公司的产品，以LGPL开源协议发布。

2. 下载源代码

a. zeromq-3.2.5.tar.gz from http://zeromq.org/intro:get-the-software

b. pyzmq-2.2.0.tar.gz from https://pypi.python.org/pypi/pyzmq/2.2.0

本文实验环境为centos6.3

3. install zeromq-3.2.5

编译源代码需要以下工具，确保linux系统中已经安装：

      uuid-devel、libuuid-devel、gcc、gcc-c++、libtool、make、python、tar

a. 解压

$tar -zxvf zeromq-3.2.5.tar.gz

$cd zeromq-3.2.5

b.  编译

$./autogen.sh 

$./configure # default install to /usr/local/lib

$sudo make -j 4

$sudo make check 

$sudo make install

$sudo ldconfig

编译成功后，默认会在/usr/local/lib产生一个名为libzmq.a的静态文件，在

我们编译自己的代码时，需要以静态库的方式引用该库。例如我们的代码文件

名为wuserver.c，其中用到了zmq，那么编译时用命令：

gcc -o wuserver wuserver.c -lzmq

更多关于zmq的例子可以参考：http://git.oschina.net/junglefire/zguide-cn/blob/master/chapter1.md

3. install pyzmq-2.2.0

a. 解压

$tar -zxvf pyzmq-2.2.0.tar.gz

$cd pyzmq-2.2.0

a. sudo yum install python-devel.i386 (32位包)

# this can sovle problem：Python headers needed to compile C extensions,

# please install development version of Python

# ubuntu下命令为：sudo apt-get install python-dev

b. sudo python setup.py configure --zmq=/usr/local #set the zmq install path

c. sudo python setup.py install

4.附上一个简单例子的代码：

服务器端：zmqserver.py

import zmqimport timeimport sysport = "5556"if len(sys.argv) > 1: port = sys.argv[1] int(port)context = zmq.Context()socket = context.socket(zmq.REP)socket.bind("tcp://*:%s" % port)while True: # Wait for next request from client message = socket.recv() print "Received request: ", message time.sleep (1) socket.send("World from %s" % port)

客户端：zmqclient.py

import zmqimport sysport = "5556"if len(sys.argv) > 1: port = sys.argv[1] int(port)if len(sys.argv) > 2: port1 = sys.argv[2] int(port1)context = zmq.Context()print "Connecting to server..."socket = context.socket(zmq.REQ)socket.connect ("tcp://localhost:%s" % port)if len(sys.argv) > 2: socket.connect ("tcp://localhost:%s" % port1)# Do 10 requests, waiting each time for a responsefor request in range (1,10): print "Sending request ", request,"..." socket.send ("Hello") # Get the reply. message = socket.recv() print "Received reply ", request, "[", message, "]"

运行示例：

打开一个shell，执行命令运行服务器端代码： $python zmqserver.py

打开另外一个shell并执行命令运行客户端代码：$python zmqclient.py

输出为：

服务器端输出为：

Received request:  Hello
Received request:  Hello
Received request:  Hello
Received request:  Hello
Received request:  Hello
Received request:  Hello
Received request:  Hello
Received request:  Hello
Received request:  Hello

客户端输出为：

Connecting to server...
Sending request  1 ...
Received reply  1 [ World from 5556 ]
Sending request  2 ...
Received reply  2 [ World from 5556 ]
Sending request  3 ...
Received reply  3 [ World from 5556 ]
Sending request  4 ...
Received reply  4 [ World from 5556 ]
Sending request  5 ...
Received reply  5 [ World from 5556 ]
Sending request  6 ...
Received reply  6 [ World from 5556 ]
Sending request  7 ...
Received reply  7 [ World from 5556 ]
Sending request  8 ...
Received reply  8 [ World from 5556 ]
Sending request  9 ...
Received reply  9 [ World from 5556 ]

zmq支持多个服务器，所以还可以这样运行以上例子。

shell1: $python zmqserver.py 5546  #sever1

shell2: $python zmqserver.py 5556  #server2

shell3: $python zmqclient.pyt 5546 5556 #send msg to server1 and server2

output;

server1: 

Received request:  Hello
Received request:  Hello
Received request:  Hello
Received request:  Hello
Received request:  Hello

server2: 

Received request:  Hello
Received request:  Hello
Received request:  Hello
Received request:  Hello

client:

Connecting to server...
Sending request  1 ...
Received reply  1 [ World from 5546 ]
Sending request  2 ...
Received reply  2 [ World from 5556 ]
Sending request  3 ...
Received reply  3 [ World from 5546 ]
Sending request  4 ...
Received reply  4 [ World from 5556 ]
Sending request  5 ...
Received reply  5 [ World from 5546 ]
Sending request  6 ...
Received reply  6 [ World from 5556 ]
Sending request  7 ...
Received reply  7 [ World from 5546 ]
Sending request  8 ...
Received reply  8 [ World from 5556 ]
Sending request  9 ...
Received reply  9 [ World from 5546 ]