Changing AFRestClient +baseURL to a @property

AFNetworking/AFRestClient.h

@@ -26,16 +26,15 @@
 #import "NSMutableURLRequest+AFNetworking.h"
 #import "NSString+AFNetworking.h"
 
-@protocol AFRestClient <NSObject>
-+ (NSURL *)baseURL;
-@end
-
-@interface AFRestClient : NSObject <AFRestClient> {
-@protected
+@interface AFRestClient : NSObject {
+@private
+    NSURL *_baseURL;
     NSMutableDictionary *_defaultHeaders;
     NSOperationQueue *_operationQueue;
 }
 
+- (id)initWithBaseURL:(NSURL *)url;
+
 - (NSString *)defaultValueForHeader:(NSString *)header;
 - (void)setDefaultHeader:(NSString *)header value:(NSString *)value;
 - (void)setAuthorizationHeaderWithUsername:(NSString *)username password:(NSString *)password;

AFNetworking/AFRestClient.m

@@ -28,20 +28,24 @@
 static NSStringEncoding const kAFRestClientStringEncoding = NSUTF8StringEncoding;
 
 @interface AFRestClient ()
+@property (readwrite, nonatomic, retain) NSURL *baseURL;
 @property (readwrite, nonatomic, retain) NSMutableDictionary *defaultHeaders;
 @property (readwrite, nonatomic, retain) NSOperationQueue *operationQueue;
 @end
 
 @implementation AFRestClient
+@synthesize baseURL = _baseURL;
 @synthesize defaultHeaders = _defaultHeaders;
 @synthesize operationQueue = _operationQueue;
 
-- (id)init {
+- (id)initWithBaseURL:(NSURL *)url {
     self = [super init];
     if (!self) {
         return nil;
     }
     
+    self.baseURL = url;
+    
     self.operationQueue = [[[NSOperationQueue alloc] init] autorelease];
 	[self.operationQueue setMaxConcurrentOperationCount:2];
 	
@@ -64,19 +68,12 @@ static NSStringEncoding const kAFRestClientStringEncoding = NSUTF8StringEncoding
 }
 
 - (void)dealloc {
+    [_baseURL release];
     [_defaultHeaders release];
     [_operationQueue release];
     [super dealloc];
 }
 
-+ (NSURL *)baseURL {
-    if ([self class] == [AFRestClient class]) {
-		[NSException raise:NSInternalInconsistencyException format:@"You must override %@ in a subclass", NSStringFromSelector(_cmd)];
-	}
-    
-    return nil;
-}
-
 - (NSString *)defaultValueForHeader:(NSString *)header {
 	return [self.defaultHeaders valueForKey:header];
 }
@@ -104,7 +101,7 @@ static NSStringEncoding const kAFRestClientStringEncoding = NSUTF8StringEncoding
 - (NSMutableURLRequest *)requestWithMethod:(NSString *)method path:(NSString *)path parameters:(NSDictionary *)parameters {	
 	NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
 	NSMutableDictionary *headers = [NSMutableDictionary dictionaryWithDictionary:self.defaultHeaders];
-	NSURL *url = [NSURL URLWithString:path relativeToURL:[[self class] baseURL]];
+	NSURL *url = [NSURL URLWithString:path relativeToURL:self.baseURL];
 	
     if (parameters) {
         NSMutableArray *mutableParameterComponents = [NSMutableArray array];

Example/Classes/AFGowallaAPIClient.m

@@ -34,14 +34,14 @@ NSString * const kAFGowallaBaseURLString = @"https://api.gowalla.com/";
 + (id)sharedClient {
     static dispatch_once_t oncePredicate;
     dispatch_once(&oncePredicate, ^{
-        _sharedClient = [[self alloc] init];
+        _sharedClient = [[self alloc] initWithBaseURL:[NSURL URLWithString:kAFGowallaBaseURLString]];
     });
     
     return _sharedClient;
 }
 
-- (id)init {
-    self = [super init];
+- (id)initWithBaseURL:(NSURL *)url {
+    self = [super initWithBaseURL:url];
     if (!self) {
         return nil;
     }
@@ -58,8 +58,4 @@ NSString * const kAFGowallaBaseURLString = @"https://api.gowalla.com/";
     return self;
 }
 
-+ (NSURL *)baseURL {
-    return [NSURL URLWithString:kAFGowallaBaseURLString];
-}
-
 @end