Add a RKRequest attribute to control redirect handling

The default behavior is the same as before, to follow redirects. If RKRequest.followRedirect is set to NO, then a redirect (301, 302, 307) response will not be followed, and the request processing will proceed using the current request only.

Tests/Logic/Network/RKResponseTest.m

@@ -268,4 +268,31 @@
     assertThatInteger([loader.response bodyEncoding], is(equalToInteger(NSASCIIStringEncoding)));
 }
 
+- (void)testFollowRedirect {
+    RKClient* client = [RKTestFactory client];
+    RKTestResponseLoader* loader = [RKTestResponseLoader responseLoader];
+    [client get:@"/redirection" delegate:loader];
+    [loader waitForResponse];
+    assertThatInteger(loader.response.statusCode, is(equalToInteger(200)));
+
+    id body = [loader.response parsedBody:NULL];
+    assertThat([body objectForKey:@"redirected"], is(equalTo([NSNumber numberWithBool:YES])));
+}
+
+- (void)testNoFollowRedirect {
+    RKClient* client = [RKTestFactory client];
+    RKTestResponseLoader* loader = [RKTestResponseLoader responseLoader];
+    
+    RKRequest* request = [client requestWithResourcePath:@"/redirection"];
+    request.method = RKRequestMethodGET;
+    request.followRedirect = NO;
+    request.delegate = loader;
+    
+    [request send];
+    [loader waitForResponse];
+    
+    assertThatInteger(loader.response.statusCode, is(equalToInteger(302)));
+    assertThat([loader.response.allHeaderFields objectForKey:@"Location"], is(equalTo(@"/redirection/target")));
+}
+
 @end

Tests/Server/lib/restkit/network/redirection.rb

@@ -0,0 +1,13 @@
+module RestKit
+  module Network
+    class Redirection < Sinatra::Base
+      get '/redirection' do
+        [302, {"Location" => '/redirection/target'}, ""]
+      end
+    
+      get '/redirection/target' do
+        [200, {"Content-Type" => "application/json"}, {"redirected" => true}.to_json]
+      end
+    end
+  end  
+end

Tests/Server/server.rb

@@ -18,6 +18,7 @@ require 'restkit/network/authentication'
 require 'restkit/network/etags'
 require 'restkit/network/timeout'
 require 'restkit/network/oauth2'
+require 'restkit/network/redirection'
 
 class Person < Struct.new(:name, :age)
   def to_json(*args)
@@ -38,6 +39,7 @@ class RestKitTestServer < Sinatra::Base
   use RestKit::Network::ETags
   use RestKit::Network::Timeout
   use RestKit::Network::OAuth2
+  use RestKit::Network::Redirection
 
   def render_fixture(path, options = {})
     send_file File.join(settings.public_folder, path), options