erlang - Ejabberd erlang和异步任务

Question

在 ejabberd 模块中，我使用此方法：

httpc:request(post, {Url, Header

它似乎不是异步的，erlang有没有办法在一个单独的线程上启动它？？？

Answer 1

Sample method-
// module name - sample
http_request(Method,Url,Body)->
httpc:request(Method, {Url, [], "application/x-www-form-urlencoded", Body}, [], []).

你会这样打电话——

 spawn(sample, http_request, [post,”www.sample.com”,”some sample data”]). 
 %% syntax spawn(Module, Name, Args) -> pid()

http://erlang.org/doc/getting_started/conc_prog.html http://erlang.org/doc/reference_manual/processes.html

Answer 2

我用过这个：

    spawn(mod_http_offline, http_request, [Url, Post]).

    % Function that make a call
    http_request(Url, Post)->
      TypeData = "application/x-www-form-urlencoded",
      Header = [],
      HTTPOptions = [],
      Options = [],
      httpc:request(post, {Url, Header, TypeData,list_to_binary(Post)}, HTTPOptions, Options).

但是当我编译时，得到这个：

Warning: function http_request/2 is unused

并且没有调用函数