diff --git a/External/ASI/ASICacheDelegate.h b/External/ASI/ASICacheDelegate.h
index 060cda5..5ce260b 100644
--- a/External/ASI/ASICacheDelegate.h
+++ b/External/ASI/ASICacheDelegate.h
@@ -100,4 +100,6 @@ typedef enum _ASICacheStoragePolicy {
 // Clear cached data stored for the passed storage policy
 - (void)clearCachedResponsesForStoragePolicy:(ASICacheStoragePolicy)cachePolicy;
 
+- (NSURL*) cacheUrl:(ASIHTTPRequest*) request;
+
 @end
diff --git a/External/ASI/ASIDownloadCache.m b/External/ASI/ASIDownloadCache.m
index b0c9990..a873a43 100644
--- a/External/ASI/ASIDownloadCache.m
+++ b/External/ASI/ASIDownloadCache.m
@@ -262,7 +262,8 @@ - (NSString *)pathToStoreCachedResponseDataForRequest:(ASIHTTPRequest *)request
 	if (![extension length]) {
 		extension = @"html";
 	}
-	path =  [path stringByAppendingPathComponent:[[[self class] keyForURL:[request url]] stringByAppendingPathExtension:extension]];
+    path =  [path stringByAppendingPathComponent:[[[self class] keyForURL:[self cacheUrl:request]] stringByAppendingPathExtension:extension]];
+
 	[[self accessLock] unlock];
 	return path;
 }
@@ -275,7 +276,8 @@ - (NSString *)pathToStoreCachedResponseHeadersForRequest:(ASIHTTPRequest *)reque
 		return nil;
 	}
 	NSString *path = [[self storagePath] stringByAppendingPathComponent:([request cacheStoragePolicy] == ASICacheForSessionDurationCacheStoragePolicy ? sessionCacheFolder : permanentCacheFolder)];
-	path =  [path stringByAppendingPathComponent:[[[self class] keyForURL:[request url]] stringByAppendingPathExtension:@"cachedheaders"]];
+    path =  [path stringByAppendingPathComponent:[[[self class] keyForURL:[self cacheUrl:request]] stringByAppendingPathExtension:@"cachedheaders"]];
+
 	[[self accessLock] unlock];
 	return path;
 }
@@ -303,7 +305,7 @@ - (void)removeCachedDataForURL:(NSURL *)url
 
 - (void)removeCachedDataForRequest:(ASIHTTPRequest *)request
 {
-	[self removeCachedDataForURL:[request url]];
+	[self removeCachedDataForURL:[self cacheUrl:request]];
 }
 
 - (BOOL)isCachedDataCurrentForRequest:(ASIHTTPRequest *)request
@@ -313,12 +315,12 @@ - (BOOL)isCachedDataCurrentForRequest:(ASIHTTPRequest *)request
 		[[self accessLock] unlock];
 		return NO;
 	}
-	NSDictionary *cachedHeaders = [self cachedResponseHeadersForURL:[request url]];
+	NSDictionary *cachedHeaders = [self cachedResponseHeadersForURL:[self cacheUrl:request]];
 	if (!cachedHeaders) {
 		[[self accessLock] unlock];
 		return NO;
 	}
-	NSString *dataPath = [self pathToCachedResponseDataForURL:[request url]];
+	NSString *dataPath = [self pathToCachedResponseDataForURL:[self cacheUrl:request]];
 	if (!dataPath) {
 		[[self accessLock] unlock];
 		return NO;
@@ -461,11 +463,11 @@ - (BOOL)canUseCachedDataForRequest:(ASIHTTPRequest *)request
 		return YES;
 	}
 
-	NSDictionary *headers = [self cachedResponseHeadersForURL:[request url]];
+	NSDictionary *headers = [self cachedResponseHeadersForURL:[self cacheUrl:request]];
 	if (!headers) {
 		return NO;
 	}
-	NSString *dataPath = [self pathToCachedResponseDataForURL:[request url]];
+	NSString *dataPath = [self pathToCachedResponseDataForURL:[self cacheUrl:request]];
 	if (!dataPath) {
 		return NO;
 	}
@@ -497,6 +499,19 @@ - (BOOL)canUseCachedDataForRequest:(ASIHTTPRequest *)request
 	return NO;
 }
 
+- (NSURL*) cacheUrl:(ASIHTTPRequest*) request
+{
+    NSURL * url = [request url];
+    if(![request.requestMethod isEqualToString:@"GET"] && [request.postBody length]>0)
+    {
+        NSString * postString = [ASIHTTPRequest base64forData:request.postBody];
+        
+        url = [NSURL URLWithString:[NSString stringWithFormat:@"%@?%@",[request url].absoluteString,postString]];
+    }
+    
+    return url;
+}
+
 @synthesize storagePath;
 @synthesize defaultCachePolicy;
 @synthesize accessLock;
diff --git a/External/ASI/ASIHTTPRequest.m b/External/ASI/ASIHTTPRequest.m
index a5c0a36..d86835c 100644
--- a/External/ASI/ASIHTTPRequest.m
+++ b/External/ASI/ASIHTTPRequest.m
@@ -892,11 +892,11 @@ - (void)main
 		if (![self mainRequest]) {
 			[self buildPostBody];
 		}
-		
+		/*
 		if (![[self requestMethod] isEqualToString:@"GET"]) {
 			[self setDownloadCache:nil];
 		}
-		
+		*/
 		
 		// If we're redirecting, we'll already have a CFHTTPMessageRef
 		if (request) {
@@ -3577,8 +3577,8 @@ - (void)markAsFinished
 
 - (void)useDataFromCache
 {
-	NSDictionary *headers = [[self downloadCache] cachedResponseHeadersForURL:[self url]];
-	NSString *dataPath = [[self downloadCache] pathToCachedResponseDataForURL:[self url]];
+	NSDictionary *headers = [[self downloadCache] cachedResponseHeadersForURL:[[self downloadCache] cacheUrl:self]];
+	NSString *dataPath = [[self downloadCache] pathToCachedResponseDataForURL:[[self downloadCache] cacheUrl:self]];
 
 	ASIHTTPRequest *theRequest = self;
 	if ([self mainRequest]) {
@@ -3594,7 +3594,7 @@ - (void)useDataFromCache
 		if ([theRequest downloadDestinationPath]) {
 			[theRequest setDownloadDestinationPath:dataPath];
 		} else {
-			[theRequest setRawResponseData:[NSMutableData dataWithData:[[self downloadCache] cachedResponseDataForURL:[self url]]]];
+			[theRequest setRawResponseData:[NSMutableData dataWithData:[[self downloadCache] cachedResponseDataForURL:[[self downloadCache] cacheUrl:self]]]];
 		}
 		[theRequest setContentLength:[[[self responseHeaders] objectForKey:@"Content-Length"] longLongValue]];
 		[theRequest setTotalBytesRead:[self contentLength]];