常用网络测试工具使用方法

• iperf3

            服务端： iperf3 -s -i 1 -p 1234

            客户端（TCP）： iperf3 -c 192.0.8.11 -i 1 -p 1234 -t 60

            客户端（UDP）：iperf3 -u -c 10.10.2.20 -p 1234 -i 1 -t 10 -b 100M

• nuttcp

          服务端：nuttcp -S

          客户端（TCP）： nuttcp  -T30 -p5001 -w4m -i1  [server IP address]

          客户端（UDP）：nuttcp  -T30 -u -p5001 -w4m -R100M -i1  [server IP address]

• nc

           服务端：nc -ul -p 70

           客户端：nc -u IP 70

• 抓包tcpdump

           tcpdump -i eth0  port 80

           tcpdump -i eth0 -enn -v

           tcpdump -i eth0 icmp -w xxx.cap

• python快速启动http服务

           ipv4：python -m SimpleHTTPServer 80

           ipv6：python -c "import socket,SocketServer,CGIHTTPServer;SocketServer.TCPServer.address_family=socket.AF_INET6;CGIHTTPServer.test()" 80

• 使用脚本起https服务

import BaseHTTPServer
import SimpleHTTPServer
import os
import socket
import ssl
#import SocketServer
#import CGIHTTPServer

script_home = os.path.dirname(os.path.abspath(__file__))
#SocketServer.TCPServer.address_family = socket.AF_INET6
ip = "2008:5be8::12" 
port = 443

def main():
    print ("simple https server, address:%s:%d, document root:%s" % (ip, port, script_home))

    httpd = BaseHTTPServer.HTTPServer(('2008:5be8::12', port), SimpleHTTPServer.SimpleHTTPRequestHandler)
    httpd.socket = ssl.wrap_socket(httpd.socket, certfile='./server.pem', server_side=True)
    httpd.serve_forever()

if __name__ == '__main__':
    os.chdir(script_home)
    main()

• 使用nginx起https服务

（1）在/etc/nginx目录下新建ssl目录，将文件server.crt，server.key拷贝至/etc/nginx/ssl目录下；

（2）将/etc/nginx/nginx.conf文件新增ssl相关配置项，如下所示：

server {
        listen       443 ssl http2 default_server;
        listen       [::]:443 ssl http2 default_server;
        server_name  _;
        root         /usr/share/nginx/html;

        ssl_certificate "/etc/nginx/ssl/server.crt";
        ssl_certificate_key "/etc/nginx/ssl/server.key";
        ssl_session_cache shared:SSL:1m;
        ssl_session_timeout  10m;
        ssl_ciphers HIGH:!aNULL:!MD5;
        ssl_prefer_server_ciphers on;

        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        location / {
        }

        error_page 404 /404.html;
            location = /40x.html {
        }

        error_page 500 502 503 504 /50x.html;
            location = /50x.html {
        }
    }

（3）启动nginx服务，执行：

        systemctl start nginx

（4）在浏览器中访问https://【nginx服务器IP】:443

• fio测试磁盘读写速率

      读： fio -filename=/dev/sdb -direct=1 -iodepth 1 -thread -rw=read  -ioengine=psync -bs=4k -size=10G -numjobs=10 -runtime=300 -group_reporting -name=mytest

      写：fio -filename=/dev/sdb -direct=1 -iodepth 1 -thread -rw=write  -ioengine=psync -bs=4k -size=10G -numjobs=10 -runtime=300 -group_reporting -name=mytest

     随机读写：fio -filename=/dev/vdb -direct=1 -ioengine=libaio -iodepth=32 -bs=8k -rw=randrw -numjobs=1 -runtime=300 -name=test1 -group_reporting -name=mytest

• 发送UDP协议包脚本

（1）client端

import socket

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
addr = ("1.1.1.6", 2345)

send_msg = "q"
s.sendto(send_msg.encode("utf-8"), addr)
response, addr = s.recvfrom(1024)
print(response.decode())
print("Receive from %s:%s" % addr)
s.close()

（2）server端

import socket

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.bind(("2.2.2.2", 2345))
print("UDP bound on port 2345...")

while True:
    data, addr = s.recvfrom(1024)
    print("Receive from %s:%s" % addr)
    if data == "q":
        s.sendto("Good bye!\n", addr)
        break