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util/bitcompat.lua @ 11590:5aafb832c91b

core.portmanager: Fix race condition in initialization of SNI cert map Under some circumstances when hosts and modules are loaded in some certain order, entries end up missing from the SNI map. This manifests in e.g. `curl https://localhost:5281/` giving an error about "unrecognized name". The `service` argument is `nil` when invoked from the "host-activated" event, leading it to iterating over every service. And then it would not be fetching e.g. `http_host` from the config, which explains why https would sometimes not work due to the missing name entry. Because when `service` is included, this limits the iteration to matching entries, while also returning the same value as the `name` loop variable. Because `name == service when service != nil` we can use name instead in the body of the loop.
author Kim Alvefur <zash@zash.se>
date Fri, 28 May 2021 17:09:22 +0200
parent 10241:48f7cda4174d
child 12573:0f4feaf9ca64
line wrap: on
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-- Compatibility layer for bitwise operations

-- First try the bit32 lib
-- Lua 5.3 has it with compat enabled
-- Lua 5.2 has it by default
if _G.bit32 then
	return _G.bit32;
else
	-- Lua 5.1 may have it as a standalone module that can be installed
	local ok, bitop = pcall(require, "bit32")
	if ok then
		return bitop;
	end
end

do
	-- Lua 5.3 and 5.4 would be able to use native infix operators
	local ok, bitop = pcall(require, "util.bit53")
	if ok then
		return bitop;
	end
end

do
	-- Lastly, try the LuaJIT bitop library
	local ok, bitop = pcall(require, "bit")
	if ok then
		return bitop;
	end
end

error "No bit module found. See https://prosody.im/doc/depends#bitop";