80 lines
2.0 KiB
Lua
80 lines
2.0 KiB
Lua
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--[[
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@module httpdns
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@summary 使用Http进行域名解析
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@version 1.0
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@date 2023.07.13
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@author wendal
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@usage
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-- 通过阿里DNS获取结果
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local ip = httpdns.ali("air32.cn")
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log.info("httpdns", "air32.cn", ip)
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-- 通过腾讯DNS获取结果
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local ip = httpdns.tx("air32.cn")
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log.info("httpdns", "air32.cn", ip)
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]]
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local httpdns = {}
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--[[
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通过阿里DNS获取结果
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@api httpdns.ali(domain_name, opts)
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@string 域名
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@table opts 可选参数, 与http.request的opts参数一致
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@return string ip地址
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@usage
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local ip = httpdns.ali("air32.cn")
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log.info("httpdns", "air32.cn", ip)
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-- 指定网络适配器
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local ip = httpdns.ali("air32.cn", {adapter=socket.LWIP_STA, timeout=3000})
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log.info("httpdns", "air32.cn", ip)
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]]
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function httpdns.ali(n, opts)
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if n == nil then return end
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if opts == nil then
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opts = {timeout=3000}
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elseif opts.timeout == nil then
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opts.timeout = 3000
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end
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local code, _, body = http.request("GET", "http://223.5.5.5/resolve?short=1&name=" .. tostring(n), nil, nil, opts).wait()
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if code == 200 and body and #body > 2 then
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local jdata = json.decode(body)
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if jdata and #jdata > 0 then
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return jdata[1]
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end
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end
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end
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--[[
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通过腾讯DNS获取结果
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@api httpdns.tx(domain_name, opts)
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@string 域名
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@table opts 可选参数, 与http.request的opts参数一致
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@return string ip地址
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@usage
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local ip = httpdns.tx("air32.cn")
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log.info("httpdns", "air32.cn", ip)
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-- 指定网络适配器
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local ip = httpdns.tx("air32.cn", {adapter=socket.LWIP_STA, timeout=3000})
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log.info("httpdns", "air32.cn", ip)
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]]
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function httpdns.tx(n, opts)
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if n == nil then return end
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if opts == nil then
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opts = {timeout=3000}
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elseif opts.timeout == nil then
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opts.timeout = 3000
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end
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local code, _, body = http.request("GET", "http://119.29.29.29/d?dn=" .. tostring(n), nil, nil, opts).wait()
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if code == 200 and body and #body > 2 then
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local tmp = body:split(",")
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if tmp then return tmp[1] end
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end
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end
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return httpdns
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