Question

I have some code in ASIHTTP, but I want to move on AFNetworking.
I used ASIFormDataRequest for some POST requests and this code works fine:

NSURL *url = [NSURL URLWithString:@"http://someapiurl"];
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
[request setPostValue:@"123" forKey:@"phone_number"];
[request startSynchronous];
NSError *error = [request error];
if (!error) {
    NSLog(@"Response: %@", [[request responseString] objectFromJSONString]);

}

but, when I tried to do the same with AFNetworking, I got in problem with content-type (I guess).

This is AFNetworking code, and it doesn’t work:

    NSURL *url = [NSURL URLWithString:@"http://dev.url"];
    AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];

    NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:
                            @"123", @"phone_number",
                            nil];
    NSMutableURLRequest *request = [httpClient requestWithMethod:@"POST" path:@"/api/get_archive" parameters:params];
    [request setValue:@"application/x-www-form-urlencoded; charset=UTF8" forHTTPHeaderField:@"Content-Type"];

    AFHTTPRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest
*request, NSHTTPURLResponse *response, id JSON) {
                NSLog(@"Response: %@", JSON);
            } failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON){
                NSLog(@"Error: %@", error);
            }];
            [operation start];

URL is fine, this is checked.
I’m getting from server this:

{NSErrorFailingURLKey=http://dev.thisapiurl, NSLocalizedDescription=Expected content type {(
    "text/json",
    "application/json",
    "text/javascript"
)}, got text/html}

Answer 1

The problem you’re having is because you are instantiating an AFJSONRequestOperation, which by default expects a JSON-friendly response type. Are you expecting a JSON response? If not, you should use a less-specific Request class. For example, you could use HTTPRequestOperationWithRequest: .

NSURL *url = [NSURL URLWithString:@"http://dev.url"];
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];

NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:
                        @"123", @"phone_number",
                        nil];
NSMutableURLRequest *request = [httpClient requestWithMethod:@"POST" path:@"/api/get_archive" parameters:params];
[request setValue:@"application/x-www-form-urlencoded; charset=UTF8" forHTTPHeaderField:@"Content-Type"];

//Notice the different method here!
AFHTTPRequestOperation *operation = [httpClient HTTPRequestOperationWithRequest:request 
    success:^(AFHTTPRequestOperation *operation, id responseObject) {
            NSLog(@"Response: %@", responseObject);
        } 
    failure:^(AFHTTPRequestOperation *operation, NSError *error){
            NSLog(@"Error: %@", error);
        }];
//Enqueue it instead of just starting it.
[httpClient enqueueHTTPRequestOperation:operation];

If you have more specific request/response types (JSON, XML, etc), you can use those specific AFHTTPRequestOperation subclasses. Otherwise, just use the vanilla HTTP one.