Added automatic redirection for 30x headers (on by default)

@@ -215,6 +215,9 @@ extern NSString* const NetworkRequestErrorDomain;
 	// Use HTTP 1.0 rather than 1.1 (defaults to false)
 	BOOL useHTTPVersionOne;
 	
+	// When YES, requests will automatically redirect when they get a HTTP 30x header (defaults to YES)
+	BOOL shouldRedirect;
+
 }
 
 #pragma mark init / dealloc
@@ -397,5 +400,5 @@ extern NSString* const NetworkRequestErrorDomain;
 @property (assign) BOOL didCreateTemporaryPostDataFile;
 @property (assign) BOOL useHTTPVersionOne;
 @property (assign, readonly) unsigned long long partialDownloadSize;
-
+@property (assign) BOOL shouldRedirect;
 @end

@@ -88,6 +88,7 @@ static NSError *ASIUnableToCreateRequestError;
 	self = [super init];
 	[self setRequestMethod:@"GET"];
 
+	[self setShouldRedirect:YES];
 	[self setShowAccurateProgress:YES];
 	[self setShouldResetProgressIndicators:YES];
 	[self setAllowCompressedResponse:YES];
@@ -305,12 +306,13 @@ static NSError *ASIUnableToCreateRequestError;
 	}
 	
     // Create a new HTTP request.
-	request = CFHTTPMessageCreateRequest(kCFAllocatorDefault, (CFStringRef)requestMethod, (CFURLRef)url, self.useHTTPVersionOne ? kCFHTTPVersion1_0 : kCFHTTPVersion1_1);
+	request = CFHTTPMessageCreateRequest(kCFAllocatorDefault, (CFStringRef)requestMethod, (CFURLRef)url, [self useHTTPVersionOne] ? kCFHTTPVersion1_0 : kCFHTTPVersion1_1);
     if (!request) {
 		[self failWithError:ASIUnableToCreateRequestError];
 		return;
     }
 	
+	
 	// If we've already talked to this server and have valid credentials, let's apply them to the request
 	if (useSessionPersistance && sessionCredentials && sessionAuthentication) {
 		if (!CFHTTPMessageApplyCredentialDictionary(request, sessionAuthentication, (CFMutableDictionaryRef)sessionCredentials, NULL)) {
@@ -429,6 +431,9 @@ static NSError *ASIUnableToCreateRequestError;
         return;
     }
 	
+	// Tell CFNetwork to automatically redirect for 30x status codes
+	CFReadStreamSetProperty(readStream, kCFStreamPropertyHTTPShouldAutoredirect, [self shouldRedirect] ? kCFBooleanTrue : kCFBooleanFalse);
+    
     // Set the client
 	CFStreamClientContext ctxt = {0, self, NULL, NULL, NULL};
     if (!CFReadStreamSetClient(readStream, kNetworkEvents, ReadStreamClientCallBack, &ctxt)) {
@@ -1634,4 +1639,5 @@ static NSError *ASIUnableToCreateRequestError;
 @synthesize fileDownloadOutputStream;
 @synthesize authenticationRetryCount;
 @synthesize updatedProgress;
+@synthesize shouldRedirect;
 @end

@@ -126,10 +126,39 @@
 	GHAssertTrue(success,@"Wrong HTTP version used");	
 }
 
+- (void)testAutomaticRedirection
+{
+	ASIHTTPRequest *request;
+	BOOL success;
+	int i;
+	for (i=301; i<308; i++) {
+		NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"http://allseeing-i.com/ASIHTTPRequest/tests/redirect/%hi",i]];
+		request = [ASIHTTPRequest requestWithURL:url];
+		[request setShouldRedirect:NO];
+		[request start];
+		NSLog([request responseString]);
+		if (i == 304) { // 304s will not contain a body, as per rfc2616. Will test 304 handling in a future test when we have etag support
+			continue;
+		}
+		success = [[request responseString] isEqualToString:[NSString stringWithFormat:@"Non-redirected content with %hi status code",i]];
+		GHAssertTrue(success,[NSString stringWithFormat:@"Got the wrong content when not redirecting after a %hi",i]);
+	
+		request = [ASIHTTPRequest requestWithURL:url];
+		[request start];
+		NSLog([request responseString]);
+		success = [[request responseString] isEqualToString:[NSString stringWithFormat:@"Redirected content after a %hi status code",i]];
+		GHAssertTrue(success,[NSString stringWithFormat:@"Got the wrong content when redirecting after a %hi",i]);
+	
+		success = ([request responseStatusCode] == 200);
+		GHAssertTrue(success,[NSString stringWithFormat:@"Got the wrong status code (expected %hi)",i]);
+
+	}
+}
+
 - (void)testUploadContentLength
 {
 	//This url will return the contents of the Content-Length request header
-	NSURL *url = [[[NSURL alloc] initWithString:@"http://allseeing-i.com/ASIHTTPRequest/tests/content-length"] autorelease];
+	NSURL *url = [NSURL URLWithString:@"http://allseeing-i.com/ASIHTTPRequest/tests/content-length"];
 	ASIHTTPRequest *request = [[[ASIHTTPRequest alloc] initWithURL:url] autorelease];
 	[request setPostBody:[NSMutableData dataWithLength:1024*32]];
 	[request start];