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ga0/netgraph · source

Snapshot 0 · 2026-11-04T12:47:23Z · Go · MIT

GitHub description at capture

A cross platform http sniffer with a web UI

README at capture

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# Netgraph

Netgraph is a packet sniffer tool that captures all HTTP requests/responses, and display them in web page.


![Screenshot](https://raw.githubusercontent.com/ga0/netgraph/master/screenshot.png)

You can run Netgraph in your linux server without desktop environment installed, and monitor http requests/responses in your laptop's browser.

## Compile, Install, Run

      1. go get github.com/ga0/netgraph
      2. run $GOPATH/bin/netgraph -i INTERFACE -p PORT
      3. open the netgraph web page in your browser (for example: http://localhost:9000, 9000 is the PORT set in step 2)

      Windows user need to install winpcap library first.

## Options

      -bpf string
            Set berkeley packet filter (default "tcp port 80")
      -i string
            Listen on interface, auto select one if no interface is provided
      -input-pcap string
            Open a pcap file
      -o string
            Write HTTP requests/responses to file, set value "stdout" to print to console
      -output-pcap string
            Write captured packet to a pcap file
      -output-request-only
    	      Write only HTTP request to file, drop response. Only used when option "-o" is present. (default true)
      -p int
            Web server port. If the port is set to '0', the server will not run.  (default 9000)
      -s	Save HTTP event in server
      -v	Show verbose message (default true)


Example: print captured requests to stdout:

      $ ./netgraph -i en0 -o=stdout
      2018/07/26 10:33:24 open live on device "en0", bpf "tcp port 80"
      [2018-07-26 10:33:34.873] #0 Request 192.168.1.50:60448->93.184.216.34:80
      GET / HTTP/1.1
      Host: www.example.com
      Connection: keep-alive
      Pragma: no-cache
      Cache-Control: no-cache
      Upgrade-Insecure-Requests: 1
      User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36
      Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
      Accept-Encoding: gzip, deflate
      Accept-Language: zh-CN,zh;q=0.9,en;q=0.8,zh-TW;q=0.7

      content(0)

## License

[MIT](https://opensource.org/licenses/MIT)