I am new to Mac application development and i am working on fixing the deprecation issues present in the application. I am using XCode 11.3 in Mojave MacOS 10.14 and Our application contains the following line of code
[NSURLConnection sendSynchronousRequest:request returningResonse:response error:Error]
A warning message getting displayed as sendSynchronousRequest is deprecated and it is suggesting to use [NSURLSession dataTaskWithRequest:completionHandler:] .
so i have implemented the following code
NSURLSessionConfiguration *defaultConfigObject = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *defaultSession = [NSURLSession sessionWithConfiguration: defaultConfigObject delegate: nil delegateQueue: [NSOperationQueue mainQueue]];
NSURL * url = [NSURL URLWithString:#"MyURLHere"];
NSMutableURLRequest * urlRequest = [NSMutableURLRequest requestWithURL:url];
[urlRequest setHTTPMethod:#"POST"];
[urlRequest setHTTPBody:[params dataUsingEncoding:NSUTF8StringEncoding]];
NSURLSessionDataTask * dataTask =[defaultSession dataTaskWithRequest:urlRequest
completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
NSLog(#"Response:%# %#\n", response, error);
if(error == nil)
{
NSString * text = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
}
}];
[dataTask resume];
i found that data is being returned as nil always. When i debugged the code, i found that even [NSURLSessionConfiguration defaultSessionConfiguration] is being returned as nil. Can you please suggest what needs to be done in order to fix these issues?
Related
I am attempting to upload a PNG file to a device, using NSURLDataTask and a "POST" request.
However my attempts always conclude with the device returning a 400 HTTP error code in the response.
My Upload code looks like this:
-(void)uploadMedia:(NSData*)mediaData withName:(NSString*)name andID:(NSString*)mediaID
{
NSString *urlString;
NSString *appToken [self retrieveAppToken];
NSURLSessionConfiguration *sessionConfiguration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSDictionary *dict = [NSDictionary dictionaryWithObjectsAndKeys:
appToken, #"km-device-auth",
#"application/octet-stream", #"Content-Type",
nil];
sessionConfiguration.HTTPAdditionalHeaders = dict;
NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfiguration delegate:self delegateQueue:nil];
urlString = [NSString stringWithFormat:#"https://%#:7788/Media?name=%#&id=%#",_strIP,name,mediaID];
NSLog(#"Attemptive Upload URL:%#",urlString);
NSURL *url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
request.HTTPMethod = #"POST";
request.HTTPBody = mediaData;
NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
NSLog(#"My respone:%#:%#",response,data);
}];
[postDataTask resume];
}
SOLVED
My headers also required a value for "Content-MD5" which was missing.
I am using GET method on Json. The GET method is inside a for loop, and the issue is it is not finishing the task or not getting the result. Instead the loop increments. I've placed a breakpoint inside the block where I am setting the result data to a NSDictionary but it never goes there.
Is it possible for the GET method to be directly called. I mean the code will be read line by line. And it will not skip or wait for the json to finish processing?
Here's what I've done:
- (void)downloadJsonFeed
{
for(int i = 1;i < self.numberOfEpisodes;i++)
{
NSString *endPoint = [[[[baseJsonUrl stringByAppendingString:getEpisodes]stringByAppendingString:self.title]stringByAppendingString:#"&episodeNumber="]stringByAppendingString:[NSString stringWithFormat:#"%i",i]];
NSLog(#"End point %#",endPoint);
[JsonDownload getJson:token andEndpointString:endPoint WithHandler:^(__weak id result)
{
NSArray *episodeArray =result;
//will do some task here
}];
}
}
- (void)getJson:(NSString *)authData andEndpointString:(NSString *)urlString WithHandler:(void(^)(__weak id result))handler
{
NSURLSessionConfiguration *defaultConfigObject = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *defaultSession = [NSURLSession sessionWithConfiguration: defaultConfigObject delegate: nil delegateQueue: [NSOperationQueue mainQueue]];
NSURL * url = [NSURL URLWithString:urlString];
NSMutableURLRequest * urlRequest = [NSMutableURLRequest requestWithURL:url];
//NSString *auth = [NSString stringWithFormat:#"Bearer {%#}", authData];
[urlRequest setValue:#"application/json" forHTTPHeaderField:#"Content-type"];
[urlRequest setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[urlRequest setValue:authData forHTTPHeaderField:#"Cookie"];
[urlRequest setHTTPMethod:#"GET"];
NSURLSessionDataTask * dataTask =[defaultSession dataTaskWithRequest:urlRequest
completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if(error == nil)
{
id returnedObject = [NSJSONSerialization JSONObjectWithData: data options: NSJSONReadingMutableLeaves error:nil];
handler(returnedObject);
}
else{
NSLog(#"error %#",error);
}
}];
[dataTask resume];
}
I've placed a break point in this line NSArray *episodeArray =result; and it never goes there. But when I put the break point on [JsonDownload getJson:token andEndpointString:endPoint WithHandler:^(__weak id result) line it is responding
And on the commented line //will do some task here I need to a task there before getting another json again. But I can't cause it never go inside the code block
Fixed the issue by replacing white space characters in my endPoint by %20
I am using NSMutableURLRequest is working correct when I am using
- (void)postAsynchronousOnQueue:(NSOperationQueue*)queue completionHandler:(void (^)(NSURLResponse*, NSData*, NSError*))completionHandler {
NSURLRequest* request = [self createPostRequest];
[NSURLConnection sendAsynchronousRequest:request queue:queue completionHandler:completionHandler];
}
-(NSURLRequest*)createPostRequest {
NSMutableURLRequest* request = [[HttpRequest requestWithRelativePath:#"/photo"] toNSMutableURLRequest];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:[self encodeParamsForUpload]];
return request;
}
But the issue is when my app is in background mode it won't work.
Here is my HttpRequest class method:
+(id)requestWithRelativePath:(NSString*)docpath {
return [[HttpRequest alloc] initWithRelativePath:docpath server:server username:email password:password];
}
-(id)initWithRelativePath:(NSString*)docpath server:(NSString*)server username:(NSString*)username password:(NSString*)password {
if (self = [super init]) {
docpath = [docpath stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];
_request = [self createRequestWithDocPath:docpath server:server username:username password:password];
}
return self;
}
- (NSMutableURLRequest*)createRequestWithDocPath:(NSString*)docpath server:(NSString*)server username:(NSString*)username password:(NSString*)password {
NSURL* url = [NSURL URLWithString:[NSString stringWithFormat:#"https://%#%#", server, docpath]];
NSMutableURLRequest* request = [[NSMutableURLRequest alloc] initWithURL:url];
[request setTimeoutInterval:120.0];
if ((username != nil) && (password != nil)){
NSString *authStr = [NSString stringWithFormat:#"%#:%#", username, password];
NSData *authData = [authStr dataUsingEncoding:NSUTF8StringEncoding];
NSString *authValue = [NSString stringWithFormat:#"Basic %#", [self base64Encoding:authData]];
[request setValue:authValue forHTTPHeaderField:#"Authorization"];
}
return request;
}
From, stack overflow I found NSURLSession to work API calls in background. So I used NSURLSession. Here is my updated code which I did:
- (void)postAsynchronousOnQueue:(NSOperationQueue*)queue completionHandler:(void (^)(NSURLResponse*, NSData*, NSError*))completionHandler {
NSURLRequest* request = [self createPostRequest];
[NSURLConnection sendAsynchronousRequest:request queue:queue completionHandler:completionHandler];
}
-(NSURLRequest*)createPostRequest {
NSURLSessionConfiguration *defaultConfigObject = [NSURLSessionConfiguration ephemeralSessionConfiguration];
NSURLSession *defaultSession = [NSURLSession sessionWithConfiguration: defaultConfigObject delegate: nil delegateQueue: [NSOperationQueue mainQueue]];
NSMutableURLRequest* request = [[HttpRequest requestWithRelativePath:#"/photo"] toNSMutableURLRequest];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:[self encodeParamsForUpload]];
//Create task
NSURLSessionDataTask *dataTask = [defaultSession dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
//Handle your response here
[[NSURLSession sharedSession]invalidateAndCancel];
}];
[dataTask resume];
return request;
}
But, when I am using NSURLSession the request is sending two times I already put the breakpoints in NSMutableURLRequestline but it call only once.
Please, help me to solve the issue.
Your createPostRequest is creating a request and submitting it via NSURLSession. But it also returns the NSURLRequest and postAsynchronousOnQueue proceeds to submit it again, this time through the deprecated NSURLConnection.
Remove the NSURLConnection code and just rely upon NSURLSession to issue the request.
For example:
- (void)postAsynchronousOnQueue:(NSOperationQueue*)queue completionHandler:(void (^)(NSData *, NSURLResponse*, NSError*))completionHandler {
NSURLSession *defaultSession = [NSURLSession sharedSession];
NSMutableURLRequest* request = [[HttpRequest requestWithRelativePath:#"/photo"] toNSMutableURLRequest];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:[self encodeParamsForUpload]];
NSURLSessionDataTask *dataTask = [defaultSession dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
//Handle your response here
[queue addOperationWithBlock:^{
completionHandler(data, response, error);
}];
}];
[dataTask resume];
}
I have this method to get the contents of an URL on TV:
-(void)placeGetRequestForDeveloperID:(NSString *)developerID andRunOnCompletion:(void (^)(NSData *data, NSURLResponse *response, NSError *error))ourBlock {
NSString *urlString = [NSString stringWithFormat:#"https://itunes.apple.com/lookup?id=%#&entity=software", developerID];
NSURL *url = [NSURL URLWithString:urlString];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:config];
[session dataTaskWithRequest:request completionHandler:ourBlock];
}
The completion block is never called.
NSURLSession is allowed on tvOS. Is there something I have to set on the project, like entitlements or something on the Info.plist to make this work? Is this code OK?
Thanks!
By default, when you create the task, it's suspended. You have to start the task by calling resume.
[[session dataTaskWithRequest:request completionHandler:ourBlock] resume]
You have to resume the task to start the API call.
You can try the API call as like below too.
NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:config];
NSURLSessionDataTask *apiCall = [session dataTaskWithRequest:urlRequest completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
}];
[apiCall resume];
I want to post a request to server. It is working fine if I am using NSURLSessionDataTask. But underneath I need to use AFNetworking as my whole application is using it. But when I am trying to hit the same service in AFHTTPSessionManager with POST method, It is giving me request time out.
Below are both the codes.
NSError *error;
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:nil delegateQueue:nil];
NSURL *url = [NSURL URLWithString:#"BASE URL"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:60.0];
[request addValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[request addValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setHTTPMethod:#"POST"];
NSString *postString = #"1";
NSData *data = [postString dataUsingEncoding:NSUTF8StringEncoding];
[request setHTTPBody:data];
NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
}];
[postDataTask resume];
AFNetworking kit version :-
AFHTTPSessionManager *client = [[AFHTTPSessionManager alloc] initWithBaseURL:[NSURL URLWithString:#"BASE URL"]];
NSDictionary *request = #{#"Content-Type":#"application/json",
#"Accept":#"application/json",
};
NSString *postString = #"1";
NSData *data = [postString dataUsingEncoding:NSUTF8StringEncoding];
[client POST:#"" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
[formData appendPartWithHeaders:request body:data];
} success:^(NSURLSessionDataTask *task, id responseObject) {
NSLog(#"%#",responseObject);
} failure:^(NSURLSessionDataTask *task, NSError *error) {
NSLog(#"%#",error);
}];
Please help me in implementing it in right way.
I solved this problem by creating my own request and give its configuration to AFURLSessionManager and then holding my own NSURLSessionUploadTask object.
Thanks