REDIS (15)手寫Java Redis客戶端(1)RESP協議分析(未完)

一直對Jedis有點興趣, 現在靜下心來抽空看看redis客戶端和消費端是怎麼連接的

1. 對Jedis的get命令抓包

發送

接收

可見是明文協議，0d 0a 是 \r\n我們找下文檔
redis 序列化協議

2. 模仿協議內容發送並接收內容

2.1 JAVA傳統BIO的寫法

public static void main(String[] args) throws Exception {
	Socket socket = new Socket("123.56.78.70", 6379);
	OutputStream out = socket.getOutputStream();
	InputStream in = socket.getInputStream();

	StringBuilder sb = new StringBuilder();
	sb.append("*3").append("\r\n");
	sb.append("$3").append("\r\n");
	sb.append("SET").append("\r\n");
	sb.append("$3").append("\r\n");
	sb.append("mua").append("\r\n");
	sb.append("$4").append("\r\n");
	sb.append("lisa").append("\r\n");
	out.write(sb.toString().getBytes());

	byte[] bytes = new byte[1024];
	in.read(bytes);

	System.out.println(sb.toString());
	System.out.println("-----------------");
	System.out.println(new String(bytes));
	socket.close();
}

結果:

*3
$3
SET
$3
mua
$4
lisa

-----------------
+OK

2.2 python的寫法

#!/usr/bin/python
# -*- coding: UTF-8 -*-
## 嘗試連接 redis
import socket #導入socket模塊

s = socket.socket()         #創建socket對象
host = socket.gethostname() #獲取本地主機名
port = 6379                 #設置端口號

s.connect(("123.56.78.80",port))


##  1.標準輸入輸出
while(True):
    key = raw_input("plz input redis key:")
    strLen = len(key)
    strLenStr = str(strLen)
    print "your input:", key
    print "your len:", strLenStr

    # s.send('*3\r\n$3\r\nSET\r\n$3\r\nmua\r\n$4\r\nlisa\r\n')
    # print 'result:\n', s.recv(1024)
    cmd = '*2\r\n' + '$3\r\n'+'GET\r\n'+'$'+ strLenStr + '\r\n'+ key + '\r\n'

    s.send(cmd)
    result = s.recv(1024)
    print 'redis value result:\n', '\033[0;32m', result,'\033[0m', 
s.close()