(Objective-C) HTTP POST JSON (application/json)

Demonstrates how to send a JSON POST using the application/json content-type.

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#import <CkoHttpRequest.h>
#import <CkoHttp.h>
#import <NSString.h>
#import <CkoHttpResponse.h>

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

CkoHttpRequest *req = [[CkoHttpRequest alloc] init];
CkoHttp *http = [[CkoHttp alloc] init];

// If any custom headers need to be included with the POST, add them
// by calling SetRequestHeader

// Note: An application should never explicitly set the Content-Length header.
// The Content-Length is automatically computed and added by Chilkat.

// Here are some examples of custom headers.  

// Perhaps your particular app needs some sort of custom-computed Authorization header...
[http SetRequestHeader: @"Authorization" headerFieldValue: @"my-custom-computed-auth-value"];

// Another custom header for some hypothetical app:
[http SetRequestHeader: @"X-Pass-Timestamp" headerFieldValue: @"my-custom-computed-timestamp-value"];

// We don't need to set the Content-Type header, becaue it is automatically set by Chilkat
// in the PostJson2 call below.

// The following "Accept" header may be set, but it really isn't necessary:
[http SetRequestHeader: @"Accept" headerFieldValue: @"application/json"];

NSString *jsonText = @"{ some JSON text ... }";

// To use SSL/TLS, simply use "https://" in the URL.

CkoHttpResponse *resp = 0;
resp = [http PostJson2: @"http://www.someserver.com/someJsonEndpoint" contentType: @"application/json" jsonText: jsonText];
if (http.LastMethodSuccess != YES) {
    NSLog(@"%@",http.LastErrorText);
}
else {
    // Display the JSON response.
    NSLog(@"%@",resp.BodyStr);

}