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(Objective-C) Get Response Header for Method that does not Return HttpResponse ObjectDemonstrates how to get the response header and individual response header fields for a method that does not return an HTTP response object. (If a method returns an HHTTP response object, then the response header information should be obtained from the response object.)
#import <CkoHttp.h> #import <NSString.h> #import <CkoMime.h> // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkoHttp *http = [[CkoHttp alloc] init]; NSString *strHtml = [http QuickGetStr: @"https://www.duckduckgo.com/"]; if (http.LastMethodSuccess == NO) { NSLog(@"%@",http.LastErrorText); return; } NSLog(@"%@",http.LastResponseHeader); // Here's a sample HTTP response header: // Server: nginx // Date: Wed, 30 Sep 2020 13:13:02 GMT // Content-Type: text/html; charset=UTF-8 // Transfer-Encoding: chunked // Connection: keep-alive // Vary: Accept-Encoding // ETag: W/"5f7371f4-1683" // Strict-Transport-Security: max-age=31536000 // X-Frame-Options: SAMEORIGIN // Content-Security-Policy: default-src https: blob: data: 'unsafe-inline' 'unsafe-eval'; frame-ancestors 'self' // X-XSS-Protection: 1;mode=block // X-Content-Type-Options: nosniff // Referrer-Policy: origin // Expect-CT: max-age=0 // Expires: Wed, 30 Sep 2020 13:13:01 GMT // Cache-Control: no-cache // Content-Encoding: gzip // We can load it into a Chilkat MIME object to get header field values: CkoMime *mime = [[CkoMime alloc] init]; BOOL success = [mime LoadMime: http.LastResponseHeader]; if (success == NO) { NSLog(@"%@",mime.LastErrorText); return; } // Get MIME header field values using Chilkat MIME... NSLog(@"%@",@"----"); NSLog(@"%@%@",@"ETag: ",[mime GetHeaderField: @"ETag"]); |
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