ejabberd 18.06 http：请求错误failed_connect

Question

我正在从ejabberd 18.06中的自定义模块发送HTTP请求

我尝试了多个服务器地址，其中我的API可用于接收请求，并且CURL在同一服务器上工作。

我在连接服务器时收到错误消息。我尝试了多种选择，但未能成功。任何帮助??

Sep = "&",
Header = [],
ContentType = "application/x-www-form-urlencoded",
Post = [
    "user_id=", To, Sep,
    "message_from=", From, Sep,
    "message_type=AC", Sep
],
HTTPOptions = [],
Options = [],
{ok, _ReqId} = httpc:request(post, {Url, Header, ContentType, list_to_binary(Post)}, HTTPOptions, [ {sync, false} ]),

  

{http，{＃Ref <0.553383904.99614721.184438>，{错误，{failed_connect，[{to_address，{<<“ localhost” >>，443}}}，{inet，[inet]，{options，{socket_options ，[inet，{packet_size，0}，{packet，0}，{header，0}，{active，false}，{mode，binary}]}}}}}}}}}