工程提交

4G/tools/resource/soc_script/v2025.12.31.22/lib/httpdns.lua

@@ -0,0 +1,79 @@
+--[[
+@module httpdns
+@summary 使用Http进行域名解析
+@version 1.0
+@date    2023.07.13
+@author  wendal
+@usage
+-- 通过阿里DNS获取结果
+local ip = httpdns.ali("air32.cn")
+log.info("httpdns", "air32.cn", ip)
+
+-- 通过腾讯DNS获取结果
+local ip = httpdns.tx("air32.cn")
+log.info("httpdns", "air32.cn", ip)
+]]
+
+local httpdns = {}
+
+--[[
+通过阿里DNS获取结果
+@api httpdns.ali(domain_name, opts)
+@string 域名
+@table opts 可选参数, 与http.request的opts参数一致
+@return string ip地址
+@usage
+local ip = httpdns.ali("air32.cn")
+log.info("httpdns", "air32.cn", ip)
+-- 指定网络适配器
+local ip = httpdns.ali("air32.cn", {adapter=socket.LWIP_STA, timeout=3000})
+log.info("httpdns", "air32.cn", ip)
+]]
+function httpdns.ali(n, opts)
+    if n == nil then return end
+    if opts == nil then
+        opts = {timeout=3000}
+    elseif opts.timeout == nil then
+        opts.timeout = 3000
+    end
+    local code, _, body = http.request("GET", "http://223.5.5.5/resolve?short=1&name=" .. tostring(n), nil, nil, opts).wait()
+    if code == 200 and body and #body > 2 then
+        local jdata = json.decode(body)
+        if jdata and #jdata > 0 then
+            return jdata[1]
+        end
+    end
+end
+
+
+--[[
+通过腾讯DNS获取结果
+@api httpdns.tx(domain_name, opts)
+@string 域名
+@table opts 可选参数, 与http.request的opts参数一致
+@return string ip地址
+@usage
+local ip = httpdns.tx("air32.cn")
+log.info("httpdns", "air32.cn", ip)
+
+-- 指定网络适配器
+local ip = httpdns.tx("air32.cn", {adapter=socket.LWIP_STA, timeout=3000})
+log.info("httpdns", "air32.cn", ip)
+]]
+function httpdns.tx(n, opts)
+    if n == nil then return end
+    if opts == nil then
+        opts = {timeout=3000}
+    elseif opts.timeout == nil then
+        opts.timeout = 3000
+    end
+    local code, _, body = http.request("GET", "http://119.29.29.29/d?dn=" .. tostring(n), nil, nil, opts).wait()
+    if code == 200 and body and #body > 2 then
+        local tmp = body:split(",")
+        if tmp then return tmp[1] end
+    end
+end
+
+return httpdns
+
+