Retrofit error java.io.IOException: Received authentication challenge is null

Question

I try to send on post a id application this work with HttpPost but when I try to do this with Retrofit I have the exception:

java.io.IOException: Received authentication challenge is null

Here is the method to post application id:

  @POST("/acces_token")
  @Headers({ "Content-type: application/json" })
  Response identifierApplication(@Header("X-FTVEN-ID") String header);

I searched on google but I didn't find this error with retrofit.

Thank's for your response

Answer 1

Try adding also:

@Headers({ "WWW-Authenticate: None"})

As per this question: IOException: "Received authentication challenge is null" (Apache Harmony/Android)