File

net.http: Add simple connection pooling This should speed up repeated requests to the same site by keeping their connections around and sending more requests on them. Sending multiple requests at the same time is not supported, instead a request started while another to the same authority is in progress would open a new one and the first one to complete would go back in the pool. This could be investigated in the future. Some http servers limit the number of requests per connection and this is not tested and could cause one request to fail, but hopefully it will close the connection and prevent it from being reused.

local methods = {};
local resolver_mt = { __index = methods };
local unpack = table.unpack;

-- Find the next target to connect to, and
-- pass it to cb()
function methods:next(cb)
	if #self.targets == 0 then
		cb(nil);
		return;
	end
	local next_target = table.remove(self.targets, 1);
	cb(unpack(next_target, 1, 4));
end

local function new(targets, conn_type, extra)
	return setmetatable({
		conn_type = conn_type;
		extra = extra;
		targets = targets or {};
	}, resolver_mt);
end

return {
	new = new;
};