lua中的http与https请求，luahttphttps请求

lua中的http与https请求，luahttphttps请求

OpenResty默认没有提供Http客户端，需要使用第三方提供；
此链接下载需要的资源：https://github.com/pintsized/lua-resty-http
http.lua http_headers.lua
这两个文件拷贝到openresty安装的lua的lib库。

local zhttp         = require("resty.http")

http

function http_post_client(url, body, timeout)
    local httpc = zhttp.new()

    timeout = timeout or 30000
    httpc:set_timeout(timeout)

    local res, err_ = httpc:request_uri(url, {
        method = "POST",
        body = body,
        headers = {
            ["Content-Type"] = "application/x-www-form-urlencoded",
        }
    })
   if not res then
        return nil, err_
   else
      if res.status == 200 then
                return res.body, err_
           else
                return nil, err_
           end
    end
end

---

https

function https_post_client(url, body, timeout, ssl_verify)
        local httpc = zhttp.new()

        timeout = timeout or 30000
        httpc:set_timeout(timeout)
--ssl_verify
--传参表示：用于客户端时要求服务器必须提供证书，用于服务器时服务器会发出证书请求消息要求客户端提供证书
--不传参（false）表示：表示不验证
        local res, err_ = httpc:request_uri(url, {
                ssl_verify = ssl_verify or false,
                method = "POST",
                body = body,
                headers = {
                    ["Content-Type"] = "application/x-www-form-urlencoded",
                }
        })

   if not res then
        return nil, err_
   else
      if res.status == 200 then
                return res.body, err_
           else
                return nil, err_
           end
    end

end