SVHTTPRequest lets you easily interact with RESTful (GET, POST, DELETE, PUT) web APIs. It is blocked-based, uses NSURLConnection, ARC, as well as NSJSONSerialization to automatically parse JSON responses.
SVHTTPRequest features:
- class methods for quickly making
GET,POST,PUT,DELETE,HEADand download requests. - completion block handler returning
response(NSObjectif JSON, otherwiseNSData),NSHTTPURLResponseandNSErrorobjects. - persistent
basePathand basic authentication signing when usingSVHTTPClient. - support for
multipart/form-dataparameters in POST and PUT requests. - talks with the network activity indicator (iOS only).
Add pod 'SVHTTPRequest' to your Podfile or pod 'SVHTTPRequest', :head if you're feeling adventurous.
If your project doesn't use ARC: you must add the -fobjc-arc compiler flag to SVHTTPRequest.m and SVHTTPClient.m in Target Settings > Build Phases > Compile Sources.
- Drag the
SVHTTPRequest/SVHTTPRequestfolder into your project. #import "SVHTTPRequest.h"(this will importSVHTTPClientas well)
(see sample Xcode project in /Demo)
The easiest way to make a request is using the SVHTTPRequest convenience methods:
[SVHTTPRequest GET:@"https://api.github.com/repos/samvermette/SVHTTPRequest"
parameters:nil
completion:^(id response, NSHTTPURLResponse *urlResponse, NSError *error) {
watchersLabel.text = [NSString stringWithFormat:@"SVHTTPRequest has %@ watchers", [response valueForKey:@"watchers"]];
}];If most of your requests are made to the same API endpoint, you should instead use SVHTTPClient so you can set parameters (basePath, cachePolicy, sendParametersAsJSON, "userAgent) that will be used for each request:
[[SVHTTPClient sharedClient] setBasePath:@"http://api.twitter.com/1/"];
[[SVHTTPClient sharedClient] GET:@"users/show.json"
parameters:[NSDictionary dictionaryWithObject:@"samvermette" forKey:@"screen_name"]
completion:^(id response, NSHTTPURLResponse *urlResponse, NSError *error) {
followersLabel.text = [NSString stringWithFormat:@"@samvermette has %@ followers", [response valueForKey:@"followers_count"]];
}];You can have mutiple SVHTTPClient instances using the sharedClientWithIdentifier: method.
If you would like to set those properties on individual requests, you'll need to alloc/init the request, set the attributes, and then call start:
SVHTTPRequest *request = [[SVHTTPRequest alloc] initWithAddress:@"http://github.com/api/v2/json/repos/show/samvermette/SVHTTPRequest"
method:SVHTTPRequestMethodGET
parameters:nil
completion:^(id response, NSHTTPURLResponse *urlResponse, NSError *error) {
watchersLabel.text = [NSString stringWithFormat:@"SVHTTPRequest has %@ watchers", [[response valueForKey:@"repository"] valueForKey:@"watchers"]];
}];
request.cachePolicy = NSURLRequestReloadIgnoringLocalCacheData;
[request start];You can tell SVHTTPRequest to save a GET response directly to disk and track the progress along the way:
[SVHTTPRequest GET:@"http://example.com/db.sqlite.zip"
parameters:nil
saveToPath:[[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:@"store.zip"]
progress:^(float progress) {
progressLabel.text = [NSString stringWithFormat:@"Downloading (%.0f%%)", progress*100];
}
completion:^(id response, NSHTTPURLResponse *urlResponse, NSError *error) {
progressLabel.text = @"Download complete";
// process file
}];Make sure you cancel requests for which the user isn't waiting on anymore:
SVHTTPRequest *request = [SVHTTPRequest GET:@"http://api.twitter.com/1/users/show.json"
parameters:[NSDictionary dictionaryWithObject:@"samvermette" forKey:@"screen_name"]
completion:^(id response, NSHTTPURLResponse *urlResponse, NSError *error) {
NSLog(@"%@", response);
}];
[request cancel];If you're using SVHTTPClient, you can do that by calling cancelRequestsWithPath: or cancelAllRequests.
By default, SVHTTPRequest will log messages to the console every time a request is made. You can disable this by adding the compiler flag -DSVHTTPREQUEST_DISABLE_LOGGING to SVHTTPRequest.m in Target Settings > Build Phases.
All SVHTTPRequest requests are made asynchronously using NSURLConnection's built-in asynchronous methods. The completion block, however, is executed on the main thread. You should dispatch it to a separate thread/queue if it's resource intensive enough that it hogs the main thread. This can be done easily using Grand Central Dispatch:
completion:^(id response, NSHTTPURLResponse *urlResponse, NSError *error) {
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{
// cpu-intensive code
});
}];SVHTTPRequest is brought to you by Sam Vermette and contributors to the project. If you have feature suggestions or bug reports, feel free to help out by sending pull requests or by creating new issues. If you're using SVHTTPRequest in your project, attribution would be nice.
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