tcpkit

A tool analyze tcp packets with Lua.

How to use

./tcpkit
    -s server ip.
    -p port.
    -i device.
    -S lua script path, default is ../scripts/example.lua.
    -l local address.
    -C calculate bandwidth mode.
    -d duration, take effect when -C is set.
    -f log file.
    -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