Pass an htttpbody on a GET request with NSURLRequest

5 Jul 2015

      I have the following curl command to a web api, which retrieves some info:
curl -X GET -H 'Authorization: Basic blabla' -H 'Content-Type: application/xml; charset=utf-8' -H 'Accept-Language: en' -d "<user><account_attributes><email>you@example.com</email><password>SomePassWord</password></account_attributes></user>" 'https://example.com/api/v1/endpoint

The -d and xml-string are mandatory for this GET command. I haven’t been able to translate this into an equivalent NSURLRequest that gets accepted by the server. It appears that an HTTPBody on a GET request is not honoured by NSURLRequest.

This is the code I use to make the request (on iOS):
  NSURLCredential *credential = [[WRTSServerEngine sharedServerEngine] savedCredentialsForHost:@“example.com"
                                                                                          port:0
                                                                                      protocol:@"https"
                                                                                         realm:@“SomeRealm"];

  NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:@"https://example.com/api/v1/endpoint"]];

  NSString *authStr = [NSString stringWithFormat:@"%@:%@", credential.user, credential.password];
  NSData *authData = [authStr dataUsingEncoding:NSUTF8StringEncoding];
  NSString *authValue = [NSString stringWithFormat: @"Basic %@",[authData base64EncodedStringWithOptions:0]];
  [request setValue:authValue forHTTPHeaderField:@"Authorization"];
  [request setValue:@"nl, en-us" forHTTPHeaderField:@"Accept-Language"];
  [request setValue:@"gzip" forHTTPHeaderField:@"Accept-Encoding"];

  NSString *infoAsXMLString = @"<user>";
  infoAsXMLString = [infoAsXMLString stringByAppendingString:@"<account_attributes>"];
  infoAsXMLString = [infoAsXMLString stringByAppendingFormat:@"<email>%@</email>", credential.user];
  infoAsXMLString = [infoAsXMLString stringByAppendingFormat:@"<password>%@</password>", credential.password];
  infoAsXMLString = [infoAsXMLString stringByAppendingString:@"</account_attributes>"];
  infoAsXMLString = [infoAsXMLString stringByAppendingString:@"</user>"];
  [request setHTTPBody:[infoAsXMLString dataUsingEncoding:NSUTF8StringEncoding]];

  NSURLSessionConfiguration *sessionConfig = [NSURLSessionConfiguration defaultSessionConfiguration];
  sessionConfig.allowsCellularAccess = YES;
  NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfig];
  self.task = [session dataTaskWithRequest:request
                         completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
                             NSLog(@"%@", error);
                         }];
  [self.task resume];

This results in the following error:
Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost." UserInfo=0x7ffd0b5f7a00 {NSUnderlyingError=0x7ffd0b58be50 "The operation couldn’t be completed. (kCFErrorDomainCFNetwork error -1005.)", NSErrorFailingURLStringKey=https://staging.wrts.nl/api/v1/existing_user, NSErrorFailingURLKey=https://staging.wrts.nl/api/v1/existing_user, _kCFStreamErrorDomainKey=4, _kCFStreamErrorCodeKey=-4, NSLocalizedDescription=The network connection was lost.}

If I do not set an HHTPBody on the request, I get a 500 error (which makes sense, since the server is expecting a payload in the body).

Is there any way to get the HHTPBody sent along with the GET request?

-António

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Pass an htttpbody on a GET request with NSURLRequest

Antonio Nunes