scala - Getting headers from dispatch library (version 0.10.1) -

this technically duplicate thread:

return exact response/header?

however, code in there doesn't seem work me. see in changelogs dispatch handing has changed subtley, life of me cannot work. think problem me understanding scala , not library problem.

import dispatch._, defaults._  // import com.ning.http.client.response  object httpdownloader extends app {     val goog: req = host("google.com").secure    val res = http(goog.head ok as.response).option()    print(res)   thread.sleep(5000) } 

i'm trying headers website know can check content length, error when compile snippet is

[error] ... download.scala:14: type mismatch; [error]  found   : dispatch.as.response.type [error]  required: com.ning.http.client.response => ? [error]   val res = http(goog.head ok as.response).option() 

i try import client.response instead import com.ning.http.client.{ response => nonconflictingname }, says "object com.ning.http.client.response not value." have no idea means.

if wanted entire response object , don't care non-ok status codes returning failed future, this:

val res = http(goog.head) res oncomplete{   case success(resp) =>     val headers = resp.getheaders     ...   case failure(ex) => //handle fail } 

if wated ok status handling, this:

val res = http(goog.head ok(r => r))