Get the value of Error-Message in failure block of AFHTTPRequestOperation - ios

Question

I need to get the value of Error-Message in the failure block of my request.
Here's the error:
Error Domain=com.alamofire.error.serialization.response Code=-1011
"Request failed: bad request (400)" UserInfo=0x165151b0
{NSErrorFailingURLKey=http://203.125.112.203:8090/megumi01/api/zipData?lastSynced=1441161682,
com.alamofire.serialization.response.error.response= { URL:
http://203.125.112.203:8090/megumi01/api/zipData?lastSynced=1441161682
} { status code: 400, headers {
"Access-Control-Allow-Headers" = "x-requested-with, Authorization, Content-Type, Accept";
"Access-Control-Allow-Methods" = "POST, GET, OPTIONS, DELETE, PUT";
"Access-Control-Allow-Origin" = "*";
"Access-Control-Max-Age" = 3600;
"Cache-Control" = "no-cache, no-store, max-age=0, must-revalidate";
Connection = close;
"Content-Type" = "application/json;charset=UTF-8";
Date = "Wed, 02 Sep 2015 10:38:57 GMT";
"Error-Code" = 0808;
"Error-Message" = "No updates available";
Expires = 0;
Pragma = "no-cache";
Server = "Apache-Coyote/1.1";
"Transfer-Encoding" = Identity;
"X-Application-Context" = "application:9090";
"X-Content-Type-Options" = nosniff;
"X-Frame-Options" = DENY;
"X-XSS-Protection" = "1; mode=block"; } }, NSLocalizedDescription=Request failed: bad request (400)}
I have tried putting "error" into NSData so I could convert it to NSDictionary but it becomes nil.
May I know how could I get the value of the custom header "Error-Message"?
TYIA!

Answer 1

below code may help you. try it.
NSLog(#"status code :%ld",(long)[operation.response statusCode]);
NSLog(#"Failure Response %#, %#", error, operation.response.description);

Answer 2

After thinking straightly, I was able to get the proper way to get the custom header in failure block of AFHTTPRequestOperation.
NSDictionary *userInfo = [error userInfo];
NSHTTPURLResponse *alamofireResponse = [userInfo objectForKey:#"com.alamofire.serialization.response.error.response"];
NSDictionary *allHeaders = [alamofireResponse allHeaderFields];
NSString *customMessage = [allHeaders objectForKey:#"Error-Message"];