Retrofit "java.net.ProtocolException: Unexpected status line", Anyone?

Question

My Android app crashed with the following stack trace, but when I try it from a desktop rest client it works well. Does anyone know what the problem might be?

04-23 16:00:50.449  27917-27983/com.iproperty.android.apps.irealtor D/Ireal_IrealtorClient﹕ ---> HTTP GET http://beta2.irealtor.api.iproperty.com.my/Listing?pageSize=10000&orderby=1&order=-1
04-23 16:00:50.449  27917-27983/com.iproperty.android.apps.irealtor D/Ireal_IrealtorClient﹕ If-Modified-Since: 1398235278243
04-23 16:00:50.449  27917-27983/com.iproperty.android.apps.irealtor D/Ireal_IrealtorClient﹕ User-Agent: Android/0.0.20
04-23 16:00:50.449  27917-27983/com.iproperty.android.apps.irealtor D/Ireal_IrealtorClient﹕ Accept: application/json
04-23 16:00:50.449  27917-27983/com.iproperty.android.apps.irealtor D/Ireal_IrealtorClient﹕ Authorization: WFdSeW8vOTJ1Z3BoQlBJMk53VGpaekZRY2pCd1pYSlVXUT090
04-23 16:00:50.449  27917-27983/com.iproperty.android.apps.irealtor D/Ireal_IrealtorClient﹕ ---> END HTTP (0-byte body)
04-23 16:00:50.549  27917-27983/com.iproperty.android.apps.irealtor D/Ireal_IrealtorClient﹕ ---- ERROR http://beta2.irealtor.api.iproperty.com.my/Listing?pageSize=10000&orderby=1&order=-1
04-23 16:00:50.549  27917-27983/com.iproperty.android.apps.irealtor D/Ireal_IrealtorClient﹕ java.net.ProtocolException: Unexpected status line: {"Data":[],"CustomStatusCode":200,"Status":"success"}HTTP/1.1 200 OK
            at com.squareup.okhttp.internal.http.StatusLine.<init>(StatusLine.java:38)
            at com.squareup.okhttp.internal.http.HttpConnection.readResponse(HttpConnection.java:150)
            at com.squareup.okhttp.internal.http.HttpTransport.readResponseHeaders(HttpTransport.java:99)
            at com.squareup.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:595)
            at com.squareup.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:381)
            at com.squareup.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:328)
            at com.squareup.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:493)
            at retrofit.client.UrlConnectionClient.readResponse(UrlConnectionClient.java:71)
            at retrofit.client.UrlConnectionClient.execute(UrlConnectionClient.java:38)
            at retrofit.RestAdapter$RestHandler.invokeRequest(RestAdapter.java:358)
            at retrofit.RestAdapter$RestHandler.invoke(RestAdapter.java:284)
            at $Proxy0.syncProperties(Native Method)
            at com.iproperty.android.apps.irealtor.sync.SyncHelper.performSync(SyncHelper.java:210)
            at com.iproperty.android.apps.irealtor.sync.SyncAdapter.onPerformSync(SyncAdapter.java:82)
            at android.content.AbstractThreadedSyncAdapter$SyncThread.run(AbstractThreadedSyncAdapter.java:259)
04-23 16:00:50.549  27917-27983/com.iproperty.android.apps.irealtor D/Ireal_IrealtorClient﹕ ---- END ERROR


/**Sample code by using BasicHttpClient*/
BasicHttpClient httpClientTest = new BasicHttpClient();
httpClientTest.addHeader("If-Modified-Since", "1398312582192");
httpClientTest.addHeader("Authorization", "WFdSeW8vOTJ1Z3BoQlBJMk53VGpaekZRY2pCd1pYSlVXUT090");
httpClientTest.addHeader("User-Agent", "Android/0.0.20");
httpClientTest.addHeader("Accept", "application/json");

HttpResponse responseTest = httpClientTest.get("http://beta2.irealtor.api.iproperty.com.my/Listing?pageSize=100&orderby=1&order=-1",null);
final int statusTest = responseTest.getStatus(); // here i get 204, because i make server return 204 then there is nothing.
String body responseTest.getAsString() // here i get empty which is correct.

Answer 1

You can fix this by setting the header value @Headers("Connection:close") on your retrofit method.
This worked for me.