CODEWITHSUNDEEP
iosobjective-c
Jab
Jab

Reputation: 929

Error Domain=NSURLErrorDomain Code=-1017 "The operation couldn’t be

I just started ios development and I'm trying to exchange data with my api. When I'm doing POST requests everything is going fine but when I'm trying to do a GET request I get the following error:

Error Domain=NSURLErrorDomain Code=-1017 "The operation couldn’t be completed. (NSURLErrorDomain error -1017.)" UserInfo=0x145a2c00 {NSErrorFailingURLStringKey=http://myAPI.com/, _kCFStreamErrorCodeKey=-1, NSErrorFailingURLKey=http://myAPI.com, _kCFStreamErrorDomainKey=4, NSUnderlyingError=0x145b21d0 "The operation couldn’t be completed. (kCFErrorDomainCFNetwork error -1017.)"}

Could someone explain what's going wrong and how I can fix it?

My request:

-(void)hitApiWithURL:(NSString*)url HTTPMethod:(NSString*)HTTPMethod params:(NSDictionary*)params successBlock:(successTypeBlock)success  failureBlock:(errorTypeBlock)failure{


    NSURLSessionConfiguration *sessionConfig = [NSURLSessionConfiguration defaultSessionConfiguration];
    NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfig delegate:self delegateQueue:nil];


    [sessionConfig setHTTPAdditionalHeaders:@{@"Content-type": @"application/json"}];
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:url]];
    [request setHTTPMethod:HTTPMethod];

    // The body
    NSError *error = nil;
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:params options:0 error:&error];
    [request setHTTPBody:jsonData];


    NSURLSessionDataTask *dataTaks = [session dataTaskWithRequest:request];
    [dataTaks resume];

    NSLog(@"dataTask started");

}


- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task
didCompleteWithError:(NSError *)error {
    if (error) {
        //Gives my error
    }
    else {
        // do something:
    }
}

Upvotes: 5

Views: 19542

Answers (8)

OhadM
OhadM

Reputation: 4803

There's also a case when you use a VPN to login to your app.

When you're using a VPN, your internet traffic is routed through the VPN's servers. If you lose internet connection or if the VPN server isn't reachable (which was my use-case), the VPN might send back a response that your app isn't equipped to handle, thus resulting in the NSURLErrorCannotParseResponse (-1017) error.

In some cases, VPNs can return custom error messages or codes which your app isn't expecting and therefore can't parse correctly.

I made sure that error.code == NSURLErrorCannotParseResponse is in fact true which is 1017.

The only thing left is to check with your favorite reachable code if network is reachable:

NetworkReachabilityManager(host: "https://www.google.com")?.isReachable

If:

  1. Network is unreachable and
  2. Your using a VPN and
  3. Error code is 1017

It means that there is no internet connection

We can also use NEVPNManager to make sure we are in fact using our expected VPN.

Upvotes: 0

nicolascanto
nicolascanto

Reputation: 654

For me when send one empty header like ["":""]. Triggers this error 1017.

Solution, if you have declare:

let headers = ["":""]

the best one option is set to nil:

let headers = nil

Then you can:

sessionManager.request( "www.example.com", method: .post, parameters: parameters, encoding: encoding, headers: headers ).responseJSON { response in....

Upvotes: 0

Haseeb Iqbal
Haseeb Iqbal

Reputation: 1725

It isn't direct solution to this case but might help someone with -1017 error.

I had this issue after upgrading Alamofire from 4.8.0 to 5.2.2. Problem was with HTTPHeader.

var authorizationHeader: HTTPHeader {
    guard let session = user?.session else {
        return HTTPHeader(name: "", value: "") 
    }
    return HTTPHeader(name: "Authorization", value: "Bearer \(session)")
}

Apparently sending HTTPHeader with empty key-value i-e HTTPHeader(name: "", value: "") triggers this error. I adjusted my code to instead return nil and it solved the issue.

Upvotes: 1

AlBeebe
AlBeebe

Reputation: 8121

This error occurs when you perform a GET request with the body set (setHTTPBody)

Upvotes: 4

alok rathaur
alok rathaur

Reputation: 41

PLease check this link

Alamofire.request(method, "(URLString)" , parameters: parameters, headers: headers).responseJSON { response in }

in post method you also add 

parameters:parameters, encoding: .JSON

(if you added encoding line to GET POST then error will come "cannot parse response")

2nd please check the header as well.

["authentication_token" : "sdas3tgfghret6grfgher4y"]

then Solved this issue.

Upvotes: 0

Alex Spencer
Alex Spencer

Reputation: 852

For any other people who got error code -1017 -- I fixed it by manually setting my http headers in my http request. I think the server was having problems parsing the HTTP headers because instead of the string "Authorization" : "qii2nl32j2l3jel" my headers didn't have the quotes like this: Authorization : "1i2j12j". Good luck.

Something like this:

NSMutableDictionary* newRequestHTTPHeader = [[NSMutableDictionary alloc] init];
[newRequestHTTPHeader setValue:authValue forKey:@"\"Authorization\""];
[newRequestHTTPHeader setValue:contentLengthVal forKey:@"\"Content-Length\""];
[newRequestHTTPHeader setValue:contentMD5Val forKey:@"\"Content-MD5\""];
[newRequestHTTPHeader setValue:contentTypeVal forKey:@"\"Content-Type\""];
[newRequestHTTPHeader setValue:dateVal forKey:@"\"Date\""];
[newRequestHTTPHeader setValue:hostVal forKey:@"\"Host\""];
[newRequestHTTPHeader setValue:publicValue forKey:@"\"public-read-write\""];

//the proper request is built with the new http headers.
NSMutableURLRequest* request2 = [[NSMutableURLRequest alloc] initWithURL:request.URL];
[request2 setAllHTTPHeaderFields:newRequestHTTPHeader];
[request2 setHTTPMethod:request.HTTPMethod];

Upvotes: 0

Nirmala Maurya
Nirmala Maurya

Reputation: 91

If you forget to mention HTTPMethod, the error can also take place, I faced the Problem "NSURLErrorDomain Code=-1017", somehow i forget to add line "request.HTTPMethod = "POST".

After adding the line, my code worked perfectly.

Upvotes: 6

Vitalii Gozhenko
Vitalii Gozhenko

Reputation: 9354

You have something wrong with your JSON parameters:

kCFURLErrorCannotParseResponse = -1017

Upvotes: 5

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