Revert "refactor"

This reverts commit 6753406.

Author: longbai

QiniuSDK/Http/QNHttpManager.m

@@ -162,12 +162,12 @@ - (void)  sendRequest:(NSMutableURLRequest *)request
     withCompleteBlock:(QNCompleteBlock)completeBlock
     withProgressBlock:(QNInternalProgressBlock)progressBlock
       withCancelBlock:(QNCancelBlock)cancelBlock{
+    NSString *u = request.URL.absoluteString;
     NSURL *url = request.URL;
     NSString *domain =url.host;
     NSArray * ips = nil;
     NSDate *startTime = [NSDate date];
     if (_converter != nil) {
-        NSString *u = request.URL.absoluteString;
         url = [[NSURL alloc] initWithString:_converter(u)];
         request.URL = url;
         domain = url.host;

QiniuSDK/Http/QNSessionManager.m

@@ -145,12 +145,14 @@ - (void)  sendRequest:(NSMutableURLRequest *)request
     withProgressBlock:(QNInternalProgressBlock)progressBlock
       withCancelBlock:(QNCancelBlock)cancelBlock{
 	__block NSDate *startTime = [NSDate date];
+    
 	NSString *domain = request.URL.host;
+	
+	NSString *u = request.URL.absoluteString;
 	NSURL *url = request.URL;
     NSArray *ips = nil;
 	if (_converter != nil) {
-        NSString *u = request.URL.absoluteString;
-        url = [[NSURL alloc] initWithString:_converter(u)];
+		url = [[NSURL alloc] initWithString:_converter(u)];
         request.URL = url;
         domain = url.host;
 	} else if (_noProxy && _dns != nil && [url.scheme isEqualToString:@"http"]){