Twitter Streaming Endpoint not working with SLRequest object - api

Question

I am trying to pull data from the Twitter Streaming API using the SLRequest class.
When I use the endpoint and parameters documented in the code below the program "hangs"
and no JSON data is printed. I am using an endpoint based on an example from the twitter dev
website https://dev.twitter.com/docs/streaming-apis/parameters#with I am requesting
tweets at a certain location.
When I use this code to query my timeline using the REST API (the code and request is included but
commented out) the program does not hang and I get a valid response.
Is there something else in the code that I need to implement to access the data using the streaming API? What additional modifications or changes need to be made?
ACAccountStore * accountStore = [[ACAccountStore alloc] init];
ACAccountType * twitterAccountType =
[accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];
// Ask the user permission to access his account
[accountStore requestAccessToAccountsWithType:twitterAccountType options:nil completion:^(BOOL granted, NSError *error) {
if (granted == NO) {
NSLog(#"-- error: %#", [error localizedDescription]);
}
if (granted == YES){
/***************** Create request using REST API*********************
***************** This URL is functional and returns valid data *****
NSURL * url = [NSURL URLWithString:#"https://userstream.twitter.com/1.1/user.json"];
SLRequest * request = [SLRequest requestForServiceType:SLServiceTypeTwitter requestMethod:SLRequestMethodGET URL:url parameters:#{#"screen_name": #"your_twitter_id"}];
***************************************************************/
// Create request using Streaming API Endpoint
NSURL * url = [NSURL URLWithString:#"https://stream.twitter.com/1.1/statuses/filter.json"];
NSMutableDictionary *params = [[NSMutableDictionary alloc] init];
[params setObject:#"track" forKey:#"twitter&"];
[params setObject:#"locations" forKey:#"-122.75,36.8,-121.75,37.8"];
SLRequest * request = [SLRequest requestForServiceType:SLServiceTypeTwitter requestMethod:SLRequestMethodPOST URL:url parameters:params];
NSArray * twitterAccounts = [accountStore accountsWithAccountType:twitterAccountType];
if ([twitterAccounts count] == 0) {
(NSLog(#"-- no accounts available"));
} else if ([twitterAccounts count] >0){
[request setAccount:[twitterAccounts lastObject]];
NSLog([request.account description]);
NSLog(#"Twitter handler of user is %#", request.account.username);
// Execute the request
[request performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) {
NSError * jsonError = nil;
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingAllowFragments error:&jsonError];
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
// NSLog(#"-- json Data is %#", json);
NSLog([json description]);
}];
}];
}
}
}];

Answer 1

SLRequest doesn't play well with the streaming API.
Here is how to do with STTwitter:
self.twitter = [STTwitterAPI twitterAPIOSWithAccount:account];
[_twitter verifyCredentialsWithSuccessBlock:^(NSString *username) {
NSLog(#"-- access granted for %#", username);
[_twitter postStatusesFilterUserIDs:nil
keywordsToTrack:#[#"twitter"]
locationBoundingBoxes:#[#"-122.75,36.8,-121.75,37.8"]
delimited:nil
stallWarnings:nil
progressBlock:^(id response) {
NSLog(#"-- %#", response);
} stallWarningBlock:^(NSString *code, NSString *message, NSUInteger percentFull) {
NSLog(#"-- stall warning");
} errorBlock:^(NSError *error) {
NSLog(#"-- %#", [error localizedDescription]);
}];
} errorBlock:^(NSError *error) {
NSLog(#"-- %#", [error localizedDescription]);
}];
Internally, STTwitter builds a NSURLConnection instance with the request from -[SLRequest preparedURLRequest]. You can replicate this trick in your code if you wish.