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--
-- (C) 2013-22 - ntop.org
--
local dirs = ntop.getDirs()
package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
require "lua_utils"
local json = require "dkjson"
local stats_utils = require("stats_utils")
sendHTTPContentTypeHeader('text/html')
local host_info = url2hostinfo(_GET)
local ifid = _GET["ifid"]
local what = {}
interface.select(ifid)
local pkt_distribution = {
['syn'] = 'SYN',
['synack'] = 'SYN/ACK',
['finack'] = 'FIN/ACK',
['rst'] = 'RST',
}
if(host_info["host"] ~= nil) then
local stats = interface.getHostInfo(host_info["host"],host_info["vlan"])
if stats == nil then return end
-- join sent and rcvd
local sent_stats = stats["pktStats.sent"]["tcp_flags"]
local rcvd_stats = stats["pktStats.recv"]["tcp_flags"]
for k, _ in pairs(sent_stats) do
what[k] = sent_stats[k] + rcvd_stats[k]
end
else
local stats = interface.getStats()
if stats == nil then return end
what = stats["pktSizeDistribution"]["tcp_flags"]
end
local res = {}
for key, value in pairs(what) do
if value > 0 then
res[#res + 1] = {label = pkt_distribution[key], value = value}
end
end
if table.len(res) == 0 then
res[#res + 1] = {label = "Other", value = 100}
else
res = stats_utils.collapse_stats(res, 1, 1 --[[ threshold ]])
end
print(json.encode(res))
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