(Objective-C) HTTP Verb - How to use any Verb (GET, PUT, POST, DELETE, PROPFIND, etc.)

The HttpVerb property may be set to anything. Typically, it is set to the common/standard HTTP verbs such as GET, POST, PUT, DELETE, etc. It can be set to anything, including custom verbs that only have meaning to your particular server-side application.

This example demonstrates how to compose an HTTP request using the PROPFIND verb, which is something one might use with a WebDAV request.

This example composes the following HTTP request:

   PROPFIND  /container/ HTTP/1.1
   Host: www.foo.bar
   Depth: 1
   Content-Type: text/xml; charset="utf-8"
   Content-Length: xxxx

   <?xml version="1.0" encoding="utf-8" ?>
   <D:propfind xmlns:D="DAV:">
     <D:allprop/>
   </D:propfind>

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#import <CkoHttpRequest.h>
#import <CkoXml.h>
#import <NSString.h>

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

// The ContentType, HttpVerb, and Path properties should
// always be explicitly set.
req.HttpVerb = @"PROPFIND";
req.Path = @"/container/";
req.ContentType = @"text/xml";
req.Charset = @"utf-8";
req.SendCharset = YES;

[req AddHeader: @"Depth" value: @"1"];

CkoXml *xml = [[CkoXml alloc] init];
xml.Tag = @"propfind";
[xml AddAttribute: @"xmlns:D" value: @"DAV:"];
[xml NewChild2: @"allprop" content: @""];

[req LoadBodyFromString: [xml GetXml] charset: @"utf-8"];

// View the request that would be sent if SynchronousRequest was called:
NSString *requestMime = [req GenerateRequestText];
NSLog(@"%@",requestMime);

// A few important comments about the HTTP request that is generated:
// 
// 1) The Content-Length header is automatically generated based on the actual length of the MIME message
//    that follows the intial (topmost) MIME header.
// 2) The HOST header will automatically get filled in with the actual domain when SynchronousRequest
//    is called