zmq 三种模型的python实现

1.Request-Reply模式：

客户端在请求后，服务端必须回响应

server：

#!/usr/bin/python
#-*-coding:utf-8-*-
import time
import zmq

context = zmq.Context()
socket = context.socket(zmq.REP)
socket.bind("tcp://*:5555")

while True:
    message = socket.recv()
    print(message)
    #time.sleep(1)
    socket.send("server response!")

client:

#!/usr/bin/python
#-*-coding:utf-8-*-

import zmq
import sys

context = zmq.Context()
socket = context.socket(zmq.REQ)
socket.connect("tcp://localhost:5555")

while(True):
    data = raw_input("input your data:")
    if data == 'q':
        sys.exit()

    socket.send(data)

    response = socket.recv();
    print(response)

2.Publish-Subscribe模式:

广播所有client，没有队列缓存，断开连接数据将永远丢失。client可以进行数据过滤。

server:

#!/usr/bin/python
#-*-coding:utf-8-*-

import zmq
context = zmq.Context()
socket = context.socket(zmq.PUB)
socket.bind("tcp://127.0.0.1:5000")
while True:
    msg = raw_input('input your data:')
    socket.send(msg)

client：

#!/usr/bin/python
#-*-coding:utf-8-*-

import time
import zmq
context = zmq.Context()
socket = context.socket(zmq.SUB)
socket.connect("tcp://127.0.0.1:5000")
# 这里设置的是过滤条件，不然无法收到消息
socket.setsockopt(zmq.SUBSCRIBE,'')
while True:
    print  socket.recv()

3.Parallel Pipeline模式：

由三部分组成，push进行数据推送，work进行数据缓存，pull进行数据竞争获取处理。区别于Publish-Subscribe存在一个数据缓存和处理负载。

当连接被断开，数据不会丢失，重连后数据继续发送到对端。

server：

#!/usr/bin/python
#-*-coding:utf-8-*-

import zmq

context = zmq.Context()

socket = context.socket(zmq.PULL)
socket.bind('tcp://*:5558')

while True:
    data = socket.recv()
    print data

work：

 1 #!/usr/bin/python
 2 #-*-coding:utf-8-*-
 3
 4 import zmq
 5
 6 context = zmq.Context()
 7
 8 recive = context.socket(zmq.PULL)
 9 recive.connect('tcp://127.0.0.1:5557')
10
11 sender = context.socket(zmq.PUSH)
12 sender.connect('tcp://127.0.0.1:5558')
13
14 while True:
15     data = recive.recv()
16     sender.send(data)

client：

#!/usr/bin/python
#-*-coding:utf-8-*-

import zmq
import time

context = zmq.Context()
socket = context.socket(zmq.PUSH)

socket.bind('tcp://*:5557')

while True:
    data = raw_input('input your data:')
    socket.send(data)

消息结构：
在每个消息buff前均会自带一个buff长度