bitechen/tcpkit

A tool analyzes tcp packets with Lua

tcpkit

A tool analyze tcp packets with Lua.

How to use

./tcpkit is a tool to capature the tcp packets, and analyze the packets with lua
	-s server ip
	-p port
	-i device
	-r offline file
	-w write the raw packets to file
	-S lua script path, default is ../scripts/example.lua
	-l local address
	-d interval to print stats, unit is second 
	-B operating system capture buffer size, in units of KiB (1024 bytes). 
	-f log file
	-t only tcp
	-u only udp
	-v version
	-h help

install

$ cd tcpkit/src
$ make

calculate port bandwidth

$ ./tcpkit -p 11211 -C -d 10

calculate server bandwidth every 10 seconds.

Common Error

[2016-05-13 16:15:49] [ERROR] You should use -l to assign local ip.

Just use -l option to set your local ip, for example sudo ./tcpkit -p 80 -l 192.168.4.1.

[2016-05-13 16:18:46] [ERROR] may be you should assign device use -i and swith to root.

Just use -i option to set network device, for example sudo ./tcpkit -p 80 -l 192.168.4.1 -i bond0.

See how to aquire device? use ifconfig.

how to acquire device

use ifconfig

capture packet

sudo ./tcpkit -S ../scripts/example.lua -p 5555 -s 192.168.1.2

Monitor redis or memcached latency

sudo ./tcpkit -S ../scripts/redis_mc_monitor.lua -p 6379 -s 192.168.1.2

monitor dns lanteny

sudo ./tcpkit -S ../scripts/dns_monitor.lua -p 53

Monitor Kafka

sudo ./tcpkit -S ../scripts/kafka_monitor.lua -p 6379 -s 192.168.1.2