$ go run main.go
local router = require('router')
router.handle("/path/to", function(req, res)
-- show host
print(req.host)
res.header("X-Test-Name", "aaabbcc")
res.write('OK')
end)
router.handle("/4xx", function(req, res)
res.header("X-Test-Name", "required Authorization")
res.write_header(401)
res.write('')
end)