AFNetworking 2.5.4 sending file with PATCH request - objective-c

Question

Using AFNetworking for communication between REST API and my application I ran into a strange behaviour wenn trying to upload an image with PATCH request.
I use following code:
- (void) uploadImage: (UIImage *)image {
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *parameters = #{};
AFHTTPRequestSerializer *requestSerializer = [manager requestSerializer];
NSError *e = nil;
NSMutableURLRequest *request = [requestSerializer multipartFormRequestWithMethod:#"PATCH"
URLString:requestString
parameters:parameters
constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
[formData appendPartWithFileData:UIImagePNGRepresentation(image)
name:#"image"
fileName:#"image.png"
mimeType:#"image/png"];
} error:&e];
[manager HTTPRequestOperationWithRequest:request success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog("OK");
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog("FAILED");
}];
}
Neither success not failed block of operation will be reached.
Wenn I change the request method to POST everything works fine, but the Server accepts only PATCH method for this case.
Am I doing something wrong?

Answer 1

I finally found a solution for my question:
- (void)uploadImage:(UIImage *)image
withSuccess:(SomeSuccessBlock)success
failure:(SomeFailureBlock)failure {
NSString *requestString = "Some url";
NSError *e = nil;
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
AFHTTPRequestSerializer *requestSerializer = [manager requestSerializer];
NSMutableURLRequest *request = [requestSerializer multipartFormRequestWithMethod:#"POST" URLString:requestString parameters:#{}
constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
[formData appendPartWithFileData:UIImagePNGRepresentation(image)
name:#"user[avatar]"
fileName:#"avatar.png"
mimeType:#"image/png"];
} error:&e];
if (e && failure) {
failure(e);
return;
}
[request setHTTPMethod:#"PATCH"];
[request setValue:#"PATCH" forHTTPHeaderField:#"X-HTTP-Method-Override"];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
if (success) {
success();
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
if (failure) {
failure(error);
}
}];
[operation start];
}