curl – 标题中带有“Referer”的HTTPotion.get

$curl -s -X GET https://secure.us.playstation.com/playstation/psn/profile/public/userData?onlinEID=eagon1337 --referer https://secure.us.playstation.com/logged-in/trophies/public-trophies/ | python -mjson.tool
{
    "avatarUrl": "//static-resource.np.community.playstation.net/avatar_m/3RD/UP40731301009_65ED8105B0C68DC79ABC_m.png","curLevel": "3","handle": "eagon1337","isPlusUser": "1","progress": "15","@R_316_10586@lLevel": "","trophies": {
        "bronze": "44","gold": "0","plaTinum": "0","silver": "1"
    }
}

发送以下请求标头：

> GET /playstation/psn/profile/public/userData?onlinEID=eagon1337 http/1.1
> User-Agent: curl/7.30.0
> Host: secure.us.playstation.com
> Accept: */*
> Referer: https://secure.us.playstation.com/logged-in/trophies/public-trophies/

我想出了以下Elixir代码：

defmodule PS4 do
    def HelloWorld do

        name = "eagon1337"
        url = "https://secure.us.playstation.com/playstation/psn/profile/public/userData?onlinEID=" <> name
        headers = [{"Accept","*/*"},{"Host","secure.us.playstation.com"},{"Referer","https://secure.us.playstation.com/logged-in/trophies/public-trophies/"},{"User-Agent","curl/7.30.0"}]

        IO.puts "GetTing " <> url

        response = httpotion.get url,headers: headers

        IO.puts response.body

    end
end

结果如何

iex(1)> PS4.HelloWorld
GetTing https://secure.us.playstation.com/playstation/psn/profile/public/userData?onlinEID=eagon1337
** (httpotion.httpError) req_timedout
    (httpotion) lib/httpotion.ex:209: httpotion.handle_response/1
          (ps4) lib/ps4.ex:14: PS4.HelloWorld/0

针对http://httpbin.org/get运行整个请求会产生一个非常流畅的标题(另外删除“host”-header)：

iex(1)> PS4.HelloWorld
GetTing httpbin.org/get
{
  "args": {},"headers": {
    "Accept": "*/*","Content-Length": "0","Host": "httpbin.org","Referer": "https://secure.us.playstation.com/logged-in/trophies/public-trophies/","User-Agent": "curl/7.30.0"
  },"origin": "92.77.68.151","url": "http://httpbin.org/get"
}

:ok

显然,请求的URL需要特定的Referer.但是为什么它与curl一起工作,而不是通过我的Elixir方法？我错过了什么？