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#!/usr/bin/env lua
--[[
Find out how many TCP connections we can make.
Use ulimit to increase the max number of descriptors:
ulimit -n 10000
ulimit -n
You'll probably need to be root to do this.
]]
socket = require "socket"
host = arg[1] or "google.com"
port = arg[2] or 80
connections = {}
repeat
c = assert(socket.connect(hostip or host, 80))
table.insert(connections, c)
if not hostip then
hostip = c:getpeername()
print("resolved", host, "to", hostip)
end
print("connection #", #connections, c, "fd", c:getfd())
until false
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