added hooks for request redirects

@@ -469,6 +469,9 @@ typedef void (^ASIHTTPRequestDataReceivedBlock)(ASIHTTPRequest *request, NSData
     
     //block for handling proxy authentication
     ASIHTTPRequestBlock proxyAuthenticationNeededBlock;   
+    
+    //block for handling redirections, if you want to
+    ASIHTTPRequestBlock requestRedirectedBlock;
 #endif 
 }
 
@@ -495,6 +498,7 @@ typedef void (^ASIHTTPRequestDataReceivedBlock)(ASIHTTPRequest *request, NSData
 - (void)setDataReceivedBlock:(ASIHTTPRequestDataReceivedBlock)aReceivedBlock;
 - (void)setAuthenticationNeededBlock:(ASIHTTPRequestBlock)anAuthenticationBlock;
 - (void)setProxyAuthenticationNeededBlock:(ASIHTTPRequestBlock)aProxyAuthenticationBlock;
+- (void)setRequestRedirectedBlock:(ASIHTTPRequestBlock)aRedirectBlock;
 #endif
 
 #pragma mark setup request

@@ -430,6 +430,11 @@ static NSOperationQueue *sharedQueue = nil;
     [proxyAuthenticationNeededBlock release];
     proxyAuthenticationNeededBlock = [aProxyAuthenticationBlock copy];
 }
+
+- (void)setRequestRedirectedBlock:(ASIHTTPRequestBlock)aRedirectBlock{
+    [requestRedirectedBlock release];
+    requestRedirectedBlock = [aRedirectBlock copy];
+}
 #endif
 
 #pragma mark setup request
@@ -1996,6 +2001,16 @@ static NSOperationQueue *sharedQueue = nil;
 	if ([self shouldRedirect] && [responseHeaders valueForKey:@"Location"]) {
 		if (([self responseStatusCode] > 300 && [self responseStatusCode] < 304) || [self responseStatusCode] == 307) {
             
+            if([[self delegate] respondsToSelector:@selector(requestRedirected:)]){
+                [[self delegate] performSelectorOnMainThread:@selector(requestRedirected:) withObject:self waitUntilDone:[NSThread isMainThread]];
+            }
+#if NS_BLOCKS_AVAILABLE
+            if(requestRedirectedBlock){
+                __block ASIHTTPRequest *blockCopy = self;
+                requestRedirectedBlock(blockCopy);
+            }
+#endif
+			
 			// By default, we redirect 301 and 302 response codes as GET requests
 			// According to RFC 2616 this is wrong, but this is what most browsers do, so it's probably what you're expecting to happen
 			// See also:

@@ -18,6 +18,7 @@
 - (void)requestReceivedResponseHeaders:(ASIHTTPRequest *)request;
 - (void)requestFinished:(ASIHTTPRequest *)request;
 - (void)requestFailed:(ASIHTTPRequest *)request;
+- (void)requestRedirected:(ASIHTTPRequest *)request;
 
 // When a delegate implements this method, it is expected to process all incoming data itself
 // This means that responseData / responseString / downloadDestinationPath etc are ignored