CODEWITHSUNDEEP
iosobjective-ccocoa-touchios7afnetworking-2
M to the K
M to the K

Reputation: 1586

AFNetworking 2.0 // How to read response header

I'm using the new version of AFNetworking and I can't figure out how to read the headers of the response. I'm using the AFHTTPSessionManager to perform my query, everything works well but I'm unable to find the header response field.

Here is how I proceed

self.sessionManager = [[AFHTTPSessionManager alloc] initWithBaseURL:[NSURL URLWithString:BASE_URL]];
[self.sessionManager GET:urlId parameters:nil
    success:^(NSURLSessionDataTask *task, id responseObject) {
        if ([self.delegate respondsToSelector:@selector(userIsLoadedWithInfos:)]) {
            [self.delegate userIsLoadedWithInfos: responseObject];
        }
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        if ([self.delegate respondsToSelector:@selector(userLoadingFailed)]) {
            [self.delegate userLoadingFailed];
        }
    }
];

I tried to read the response attribute of task but it return an NSURLResponse which doesn't include the headers.

Does anyone now how to read the response headers with the 2.0 version?

Upvotes: 12

Views: 11974

Answers (5)

ilan
ilan

Reputation: 4462

For swift 2.0:

if let response = operation.response {
    print(response.allHeaderFields)
}

Upvotes: 0

mikeho
mikeho

Reputation: 7000

It's interesting that the above responses indicate that the parameter id responseObject returns an NSURLResponse. I'm running a JAX-RS server on the backend and I get a different response. When executing a curl command against my server, my response is this:

$ curl -v "http://10.0.1.8:3000/items"
* About to connect() to 10.0.1.8 port 3000 (#0)
*   Trying 10.0.1.8...
* Adding handle: conn: 0x7f9f51804000
* Adding handle: send: 0
* Adding handle: recv: 0
* Curl_addHandleToPipeline: length: 1
* - Conn 0 (0x7f9f51804000) send_pipe: 1, recv_pipe: 0
* Connected to 10.0.1.8 (10.0.1.8) port 3000 (#0)
> GET /items HTTP/1.1
> User-Agent: curl/7.30.0
> Host: 10.0.1.8:3000
> Accept: */*
>
< HTTP/1.1 200 OK
< ETag: af0057e2-1c6d-4a47-b81a-a754238b60fd
< Content-Type: application/json
< Content-Length: 255
< Connection: keep-alive
<
* Connection #0 to host 10.0.1.8 left intact
[{"name":"Item1","uid":"F465AAD2-AA39-4C33-A57A-F0543C25C476"},
 {"name":"Item2","uid":"6505A82E-A473-4A7D-BC4B-BCBEFFFE8E9C"}]

My responseObject is an array of the items in the body of the server response and not an NSURLResponse. Here's how I retrieved the headers:

void (^handleSuccess)(NSURLSessionDataTask *, id) = ^(NSURLSessionDataTask *task, id responseObject) {
    // handle response headers
    NSHTTPURLResponse *response = ((NSHTTPURLResponse *)[task response]);
    NSDictionary *headers = [response allHeaderFields];

    // handle response body
    NSArray *responseItems = responseObject;
    for (NSDictionary *item in responseItems) {
        [self.activeDataController createObject:item];
    }
};

Upvotes: 4

vikingosegundo
vikingosegundo

Reputation: 52227

a slightly more robust code than Viruss mcs's:

if ([task.response isKindOfClass:[NSHTTPURLResponse class]]) {
    NSHTTPURLResponse *r = (NSHTTPURLResponse *)task.response;
    NSLog(@"%@" ,[r allHeaderFields]);
}

returns 

{
    Connection = "Keep-Alive";
    "Content-Length" = 12771;
    "Content-Type" = "application/json";
    Date = "Fri, 06 Dec 2013 10:40:48 GMT";
    "Keep-Alive" = "timeout=5";
    "Proxy-Connection" = "Keep-Alive";
    Server = "gunicorn/18.0";
}

similarly you can assure the casting is done right with [response respondsToSelector:@selector(allHeaderFields)], but you should also call that before you do the cast

if ([task.response respondsToSelector:@selector(allHeaderFields)]) {
    NSHTTPURLResponse *r = (NSHTTPURLResponse *)task.response;
    NSLog(@"%@" ,[r allHeaderFields]);
}

or no cast at all:

if ([task.response respondsToSelector:@selector(allHeaderFields)]) {
    NSLog(@"%@" ,[task.response performSelector:@selector(allHeaderFields)]);
}

Upvotes: 16

LJ Wilson
LJ Wilson

Reputation: 14427

I subclassed AFHTTPRequestOperationManager and use the:

- (AFHTTPRequestOperation *)POST:(NSString *)URLString
                      parameters:(NSDictionary *)parameters
                         success:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
                         failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure;

method for most of my web-service requests. When using that method, the response headers will be part of the operation object. Something like this:

[self POST:url parameters:newParams success:^(AFHTTPRequestOperation *operation, id responseObject) {
    // Response headers will be a dictionary
    NSDictionary *headers = operation.response.allHeaderFields;
...

Upvotes: 3

Toseef Khilji
Toseef Khilji

Reputation: 17409

Have you tried to get headers from NSURLResponse which is return,

You can try something like with NSURLResponse object,

NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse*)response;
if ([httpResponse respondsToSelector:@selector(allHeaderFields)]) {
    NSDictionary *dictionary = [httpResponse allHeaderFields];
    NSLog([dictionary description]);
}

Hope This will Help You.!

Upvotes: 13

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