Objective-C

HTTP HEAD Request

See more HTTP Examples

Sends an HTTP HEAD request and gets the response.

Note: The response to an HTTP HEAD request is always just the response header. The reponse body is always 0 length (thus the reason it's called a "HEAD" request..)

Objective-C

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

BOOL success = NO;

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

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

// If the URL uses "https://", then the connection will be TLS.
// Otherwise it will be TCP.

// A failure is when we don't get any response.  It could be a timeout, an inability to connect, etc.
// For example, a "404 Not Found" response is still a response, and thus deemed success in terms of the API..

CkoHttpResponse *resp = [[CkoHttpResponse alloc] init];
success = [http HttpNoBody: @"HEAD" url: @"https://example-code.com/" response: resp];
if (success == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

// Examine the response.
NSLog(@"%@%d",@"Status Code = ",[resp.StatusCode intValue]);
NSLog(@"%@%@",@"Status Line = ",resp.StatusLine);
NSLog(@"%@%@",@"Status Text = ",resp.StatusText);
NSLog(@"%@",@"Full Response Header:");
NSLog(@"%@",resp.Header);
NSLog(@"%@",@"----");
int numHeaderFields = [resp.NumHeaderFields intValue];
NSLog(@"%@%d",@"Num Header Fields: ",numHeaderFields);
int i;
for (i = 0; i <= numHeaderFields - 1; i++) {
    NSLog(@"%@%@%@",[resp GetHeaderName: [NSNumber numberWithInt: i]],@": ",[resp GetHeaderValue: [NSNumber numberWithInt: i]]);
}