diff --git a/AFNetworking.podspec b/AFNetworking.podspec
index 8c6affc..c3a8dbb 100644
--- a/AFNetworking.podspec
+++ b/AFNetworking.podspec
@@ -1,22 +1,25 @@
 Pod::Spec.new do |s|
   s.name     = 'AFNetworking'
-  s.version  = '1.1.0'
+  s.version  = '1.2.0'
   s.license  = 'MIT'
   s.summary  = 'A delightful iOS and OS X networking framework.'
   s.homepage = 'https://github.com/AFNetworking/AFNetworking'
   s.authors  = { 'Mattt Thompson' => 'm@mattt.me', 'Scott Raymond' => 'sco@gowalla.com' }
-  s.source   = { :git => 'https://github.com/AFNetworking/AFNetworking.git', :tag => '1.1.0' }
+  s.source   = { :git => 'https://github.com/AFNetworking/AFNetworking.git', :tag => '1.2.0' }
   s.source_files = 'AFNetworking'
   s.requires_arc = true
 
   s.ios.deployment_target = '5.0'
-  s.ios.frameworks = 'MobileCoreServices', 'SystemConfiguration'
+  s.ios.frameworks = 'MobileCoreServices', 'SystemConfiguration', 'Security'
 
   s.osx.deployment_target = '10.7'
-  s.osx.frameworks = 'CoreServices', 'SystemConfiguration'
+  s.osx.frameworks = 'CoreServices', 'SystemConfiguration', 'Security'
 
   s.prefix_header_contents = <<-EOS
 #import <Availability.h>
+
+#define _AFNETWORKING_PIN_SSL_CERTIFICATES_
+
 #if __IPHONE_OS_VERSION_MIN_REQUIRED
   #import <SystemConfiguration/SystemConfiguration.h>
   #import <MobileCoreServices/MobileCoreServices.h>
diff --git a/AFNetworking/AFHTTPClient.h b/AFNetworking/AFHTTPClient.h
index d1c6f73..5551f5d 100644
--- a/AFNetworking/AFHTTPClient.h
+++ b/AFNetworking/AFHTTPClient.h
@@ -21,6 +21,7 @@
 // THE SOFTWARE.
 
 #import <Foundation/Foundation.h>
+#import "AFURLConnectionOperation.h"
 
 #import <Availability.h>
 
@@ -137,6 +138,13 @@ typedef enum {
 @property (readonly, nonatomic, assign) AFNetworkReachabilityStatus networkReachabilityStatus;
 #endif
 
+/**
+ Default SSL pinning mode for each `AFHTTPRequestOperation` which will be enqueued with `enqueueHTTPRequestOperation:`.
+ */
+#ifdef _AFNETWORKING_PIN_SSL_CERTIFICATES_
+@property (nonatomic, assign) AFURLConnectionOperationSSLPinningMode defaultSSLPinningMode;
+#endif
+
 ///---------------------------------------------
 /// @name Creating and Initializing HTTP Clients
 ///---------------------------------------------
@@ -440,7 +448,7 @@ typedef enum {
 ///----------------
 
 /**
- ### Network Reachability
+ ## Network Reachability
 
  The following constants are provided by `AFHTTPClient` as possible network reachability statuses.
 
@@ -471,7 +479,7 @@ typedef enum {
  A key in the userInfo dictionary in a `AFNetworkingReachabilityDidChangeNotification` notification.
  The corresponding value is an `NSNumber` object representing the `AFNetworkReachabilityStatus` value for the current reachability status.
 
- ### Parameter Encoding
+ ## Parameter Encoding
 
  The following constants are provided by `AFHTTPClient` as possible methods for serializing parameters into query string or message body values.
 
@@ -543,12 +551,44 @@ extern NSTimeInterval const kAFUploadStream3GSuggestedDelay;
 
  @return `YES` if the file data was successfully appended, otherwise `NO`.
 
- @discussion The filename and MIME type for this data in the form will be automatically generated, using `NSURLResponse` `-suggestedFilename` and `-MIMEType`, respectively.
+ @discussion The filename and MIME type for this data in the form will be automatically generated, using the last path component of the `fileURL` and system associated MIME type for the `fileURL` extension, respectively.
  */
 - (BOOL)appendPartWithFileURL:(NSURL *)fileURL
                          name:(NSString *)name
                         error:(NSError * __autoreleasing *)error;
 
+/**
+ Appends the HTTP header `Content-Disposition: file; filename=#{filename}; name=#{name}"` and `Content-Type: #{mimeType}`, followed by the encoded file data and the multipart form boundary.
+
+ @param fileURL The URL corresponding to the file whose content will be appended to the form. This parameter must not be `nil`.
+ @param name The name to be associated with the specified data. This parameter must not be `nil`.
+ @param fileName The file name to be used in the `Content-Disposition` header. This parameter must not be `nil`.
+ @param mimeType The declared MIME type of the file data. This parameter must not be `nil`.
+ @param error If an error occurs, upon return contains an `NSError` object that describes the problem.
+
+ @return `YES` if the file data was successfully appended otherwise `NO`.
+ */
+- (BOOL)appendPartWithFileURL:(NSURL *)fileURL
+                         name:(NSString *)name
+                     fileName:(NSString *)fileName
+                     mimeType:(NSString *)mimeType
+                        error:(NSError * __autoreleasing *)error;
+
+/**
+ Appends the HTTP header `Content-Disposition: file; filename=#{filename}; name=#{name}"` and `Content-Type: #{mimeType}`, followed by the data from the input stream and the multipart form boundary.
+
+ @param inputStream The input stream to be appended to the form data
+ @param name The name to be associated with the specified input stream. This parameter must not be `nil`.
+ @param fileName The filename to be associated with the specified input stream. This parameter must not be `nil`.
+ @param length The length of the specified input stream in bytes.
+ @param mimeType The MIME type of the specified data. (For example, the MIME type for a JPEG image is image/jpeg.) For a list of valid MIME types, see http://www.iana.org/assignments/media-types/. This parameter must not be `nil`.
+ */
+- (void)appendPartWithInputStream:(NSInputStream *)inputStream
+                             name:(NSString *)name
+                         fileName:(NSString *)fileName
+                           length:(unsigned long long)length
+                         mimeType:(NSString *)mimeType;
+
 /**
  Appends the HTTP header `Content-Disposition: file; filename=#{filename}; name=#{name}"` and `Content-Type: #{mimeType}`, followed by the encoded file data and the multipart form boundary.
 
@@ -572,6 +612,7 @@ extern NSTimeInterval const kAFUploadStream3GSuggestedDelay;
 - (void)appendPartWithFormData:(NSData *)data
                           name:(NSString *)name;
 
+
 /**
  Appends HTTP headers, followed by the encoded data and the multipart form boundary.
 
diff --git a/AFNetworking/AFHTTPClient.m b/AFNetworking/AFHTTPClient.m
index c13a524..bd0cab2 100644
--- a/AFNetworking/AFHTTPClient.m
+++ b/AFNetworking/AFHTTPClient.m
@@ -81,7 +81,7 @@ static NSString * AFBase64EncodedStringFromString(NSString *string) {
 }
 
 static NSString * AFPercentEscapedQueryStringPairMemberFromStringWithEncoding(NSString *string, NSStringEncoding encoding) {
-    static NSString * const kAFCharactersToBeEscaped = @":/?&=;+!@#$()~'";
+    static NSString * const kAFCharactersToBeEscaped = @":/?&=;+!@#$()~',*";
     static NSString * const kAFCharactersToLeaveUnescaped = @"[].";
 
 	return (__bridge_transfer  NSString *)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (__bridge CFStringRef)string, (__bridge CFStringRef)kAFCharactersToLeaveUnescaped, (__bridge CFStringRef)kAFCharactersToBeEscaped, CFStringConvertNSStringEncodingToEncoding(encoding));
@@ -146,10 +146,11 @@ NSArray * AFQueryStringPairsFromKeyAndValue(NSString *key, id value) {
     NSMutableArray *mutableQueryStringComponents = [NSMutableArray array];
 
     if ([value isKindOfClass:[NSDictionary class]]) {
+        NSDictionary *dictionary = value;
         // Sort dictionary keys to ensure consistent ordering in query string, which is important when deserializing potentially ambiguous sequences, such as an array of dictionaries
         NSSortDescriptor *sortDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"description" ascending:YES selector:@selector(caseInsensitiveCompare:)];
-        [[[value allKeys] sortedArrayUsingDescriptors:[NSArray arrayWithObject:sortDescriptor]] enumerateObjectsUsingBlock:^(id nestedKey, __unused NSUInteger idx, __unused BOOL *stop) {
-            id nestedValue = [value objectForKey:nestedKey];
+        [[[dictionary allKeys] sortedArrayUsingDescriptors:[NSArray arrayWithObject:sortDescriptor]] enumerateObjectsUsingBlock:^(id nestedKey, __unused NSUInteger idx, __unused BOOL *stop) {
+            id nestedValue = [dictionary objectForKey:nestedKey];
             if (nestedValue) {
                 [mutableQueryStringComponents addObjectsFromArray:AFQueryStringPairsFromKeyAndValue((key ? [NSString stringWithFormat:@"%@[%@]", key, nestedKey] : nestedKey), nestedValue)];
             }
@@ -159,6 +160,11 @@ NSArray * AFQueryStringPairsFromKeyAndValue(NSString *key, id value) {
         [array enumerateObjectsUsingBlock:^(id nestedValue, __unused NSUInteger idx, __unused BOOL *stop) {
             [mutableQueryStringComponents addObjectsFromArray:AFQueryStringPairsFromKeyAndValue([NSString stringWithFormat:@"%@[]", key], nestedValue)];
         }];
+    } else if ([value isKindOfClass:[NSSet class]]) {
+        NSSet *set = value;
+        [set enumerateObjectsUsingBlock:^(id obj, BOOL *stop) {
+            [mutableQueryStringComponents addObjectsFromArray:AFQueryStringPairsFromKeyAndValue(key, obj)];
+        }];
     } else {
         [mutableQueryStringComponents addObject:[[AFQueryStringPair alloc] initWithField:key value:value]];
     }
@@ -234,9 +240,14 @@ NSArray * AFQueryStringPairsFromKeyAndValue(NSString *key, id value) {
 	self.defaultHeaders = [NSMutableDictionary dictionary];
 
     // Accept-Language HTTP Header; see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.4
-    NSString *preferredLanguageCodes = [[NSLocale preferredLanguages] componentsJoinedByString:@", "];
-    [self setDefaultHeader:@"Accept-Language" value:[NSString stringWithFormat:@"%@, en-us;q=0.8", preferredLanguageCodes]];
-
+    NSMutableArray *acceptLanguagesComponents = [NSMutableArray array];
+    [[NSLocale preferredLanguages] enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
+        float q = 1.0f - (idx * 0.1f);
+        [acceptLanguagesComponents addObject:[NSString stringWithFormat:@"%@;q=%0.1g", obj, q]];
+        *stop = q <= 0.5f;
+    }];
+    [self setDefaultHeader:@"Accept-Language" value:[acceptLanguagesComponents componentsJoinedByString:@", "]];
+    
 #if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
     // User-Agent Header; see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.43
     [self setDefaultHeader:@"User-Agent" value:[NSString stringWithFormat:@"%@/%@ (%@; iOS %@; Scale/%0.2f)", [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString *)kCFBundleExecutableKey] ?: [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString *)kCFBundleIdentifierKey], (__bridge id)CFBundleGetValueForInfoDictionaryKey(CFBundleGetMainBundle(), kCFBundleVersionKey) ?: [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString *)kCFBundleVersionKey], [[UIDevice currentDevice] model], [[UIDevice currentDevice] systemVersion], ([[UIScreen mainScreen] respondsToSelector:@selector(scale)] ? [[UIScreen mainScreen] scale] : 1.0f)]];
@@ -304,7 +315,8 @@ static void AFNetworkReachabilityCallback(SCNetworkReachabilityRef __unused targ
     }
 
     dispatch_async(dispatch_get_main_queue(), ^{
-        [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingReachabilityDidChangeNotification object:nil userInfo:[NSDictionary dictionaryWithObject:[NSNumber numberWithInteger:status] forKey:AFNetworkingReachabilityNotificationStatusItem]];
+        NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+        [notificationCenter postNotificationName:AFNetworkingReachabilityDidChangeNotification object:nil userInfo:[NSDictionary dictionaryWithObject:[NSNumber numberWithInteger:status] forKey:AFNetworkingReachabilityNotificationStatusItem]];
     });
 }
 
@@ -505,12 +517,12 @@ static void AFNetworkReachabilityReleaseCallback(const void *info) {
                                                     failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
 {
     AFHTTPRequestOperation *operation = nil;
-    NSString *className = nil;
-    NSEnumerator *enumerator = [self.registeredHTTPOperationClassNames reverseObjectEnumerator];
-    while (!operation && (className = [enumerator nextObject])) {
-        Class op_class = NSClassFromString(className);
-        if (op_class && [op_class canProcessRequest:urlRequest]) {
-            operation = [(AFHTTPRequestOperation *)[op_class alloc] initWithRequest:urlRequest];
+    
+    for (NSString *className in self.registeredHTTPOperationClassNames) {
+        Class operationClass = NSClassFromString(className);
+        if (operationClass && [operationClass canProcessRequest:urlRequest]) {
+            operation = [(AFHTTPRequestOperation *)[operationClass alloc] initWithRequest:urlRequest];
+            break;
         }
     }
 
@@ -521,6 +533,9 @@ static void AFNetworkReachabilityReleaseCallback(const void *info) {
     [operation setCompletionBlockWithSuccess:success failure:failure];
 
     operation.credential = self.defaultCredential;
+#ifdef _AFNETWORKING_PIN_SSL_CERTIFICATES_
+    operation.SSLPinningMode = self.defaultSSLPinningMode;
+#endif
 
     return operation;
 }
@@ -534,7 +549,7 @@ static void AFNetworkReachabilityReleaseCallback(const void *info) {
 - (void)cancelAllHTTPOperationsWithMethod:(NSString *)method
                                      path:(NSString *)path
 {
-    NSString *URLStringToMatched = [[[self requestWithMethod:(method ?: @"GET") path:path parameters:nil] URL] absoluteString];
+    NSString *pathToBeMatched = [[[self requestWithMethod:(method ?: @"GET") path:path parameters:nil] URL] path];
 
     for (NSOperation *operation in [self.operationQueue operations]) {
         if (![operation isKindOfClass:[AFHTTPRequestOperation class]]) {
@@ -542,9 +557,9 @@ static void AFNetworkReachabilityReleaseCallback(const void *info) {
         }
 
         BOOL hasMatchingMethod = !method || [method isEqualToString:[[(AFHTTPRequestOperation *)operation request] HTTPMethod]];
-        BOOL hasMatchingURL = [[[[(AFHTTPRequestOperation *)operation request] URL] absoluteString] isEqualToString:URLStringToMatched];
+        BOOL hasMatchingPath = [[[[(AFHTTPRequestOperation *)operation request] URL] path] isEqual:pathToBeMatched];
 
-        if (hasMatchingMethod && hasMatchingURL) {
+        if (hasMatchingMethod && hasMatchingPath) {
             [operation cancel];
         }
     }
@@ -581,9 +596,10 @@ static void AFNetworkReachabilityReleaseCallback(const void *info) {
 
     for (AFHTTPRequestOperation *operation in operations) {
         AFCompletionBlock originalCompletionBlock = [operation.completionBlock copy];
-		__weak AFHTTPRequestOperation *weakOperation = operation;
+        __weak __typeof(&*operation)weakOperation = operation;
         operation.completionBlock = ^{
-            dispatch_queue_t queue = weakOperation.successCallbackQueue ?: dispatch_get_main_queue();
+            __strong __typeof(&*weakOperation)strongOperation = weakOperation;
+            dispatch_queue_t queue = strongOperation.successCallbackQueue ?: dispatch_get_main_queue();
             dispatch_group_async(dispatchGroup, queue, ^{
                 if (originalCompletionBlock) {
                     originalCompletionBlock();
@@ -729,7 +745,12 @@ static inline NSString * AFMultipartFormFinalBoundary() {
 static inline NSString * AFContentTypeForPathExtension(NSString *extension) {
 #ifdef __UTTYPE__
     NSString *UTI = (__bridge_transfer NSString *)UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, (__bridge CFStringRef)extension, NULL);
-    return (__bridge_transfer NSString *)UTTypeCopyPreferredTagWithClass((__bridge CFStringRef)UTI, kUTTagClassMIMEType);
+    NSString *contentType = (__bridge_transfer NSString *)UTTypeCopyPreferredTagWithClass((__bridge CFStringRef)UTI, kUTTagClassMIMEType);
+    if (!contentType) {
+        return @"application/octet-stream";
+    } else {
+        return contentType;
+    }
 #else
     return @"application/octet-stream";
 #endif
@@ -755,9 +776,10 @@ NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
         maxLength:(NSUInteger)length;
 @end
 
-@interface AFMultipartBodyStream : NSInputStream <NSStreamDelegate>
-@property (nonatomic, assign) NSUInteger numberOfBytesInPacket;
+@interface AFMultipartBodyStreamProvider : NSObject
+@property (nonatomic, assign) NSUInteger bufferLength;
 @property (nonatomic, assign) NSTimeInterval delay;
+@property (nonatomic, readonly) NSInputStream *inputStream;
 @property (nonatomic, readonly) unsigned long long contentLength;
 @property (nonatomic, readonly, getter = isEmpty) BOOL empty;
 
@@ -770,7 +792,7 @@ NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
 
 @interface AFStreamingMultipartFormData ()
 @property (readwrite, nonatomic, copy) NSMutableURLRequest *request;
-@property (readwrite, nonatomic, strong) AFMultipartBodyStream *bodyStream;
+@property (readwrite, nonatomic, strong) AFMultipartBodyStreamProvider *bodyStream;
 @property (readwrite, nonatomic, assign) NSStringEncoding stringEncoding;
 @end
 
@@ -789,7 +811,7 @@ NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
 
     self.request = urlRequest;
     self.stringEncoding = encoding;
-    self.bodyStream = [[AFMultipartBodyStream alloc] initWithStringEncoding:encoding];
+    self.bodyStream = [[AFMultipartBodyStreamProvider alloc] initWithStringEncoding:encoding];
 
     return self;
 }
@@ -801,6 +823,23 @@ NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
     NSParameterAssert(fileURL);
     NSParameterAssert(name);
 
+    NSString *fileName = [fileURL lastPathComponent];
+    NSString *mimeType = AFContentTypeForPathExtension([fileURL pathExtension]);
+    
+    return [self appendPartWithFileURL:fileURL name:name fileName:fileName mimeType:mimeType error:error];
+}
+
+- (BOOL)appendPartWithFileURL:(NSURL *)fileURL
+                         name:(NSString *)name
+                     fileName:(NSString *)fileName
+                     mimeType:(NSString *)mimeType
+                        error:(NSError * __autoreleasing *)error
+{
+    NSParameterAssert(fileURL);
+    NSParameterAssert(name);
+    NSParameterAssert(fileName);
+    NSParameterAssert(mimeType);
+
     if (![fileURL isFileURL]) {
         NSDictionary *userInfo = [NSDictionary dictionaryWithObject:NSLocalizedStringFromTable(@"Expected URL to be a file URL", @"AFNetworking", nil) forKey:NSLocalizedFailureReasonErrorKey];
         if (error != NULL) {
@@ -818,8 +857,8 @@ NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
     }
 
     NSMutableDictionary *mutableHeaders = [NSMutableDictionary dictionary];
-    [mutableHeaders setValue:[NSString stringWithFormat:@"form-data; name=\"%@\"; filename=\"%@\"", name, [fileURL lastPathComponent]] forKey:@"Content-Disposition"];
-    [mutableHeaders setValue:AFContentTypeForPathExtension([fileURL pathExtension]) forKey:@"Content-Type"];
+    [mutableHeaders setValue:[NSString stringWithFormat:@"form-data; name=\"%@\"; filename=\"%@\"", name, fileName] forKey:@"Content-Disposition"];
+    [mutableHeaders setValue:mimeType forKey:@"Content-Type"];
 
     AFHTTPBodyPart *bodyPart = [[AFHTTPBodyPart alloc] init];
     bodyPart.stringEncoding = self.stringEncoding;
@@ -834,6 +873,32 @@ NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
     return YES;
 }
 
+
+- (void)appendPartWithInputStream:(NSInputStream *)inputStream
+                             name:(NSString *)name
+                         fileName:(NSString *)fileName
+                           length:(unsigned long long)length
+                         mimeType:(NSString *)mimeType
+{
+    NSParameterAssert(name);
+    NSParameterAssert(fileName);
+    NSParameterAssert(mimeType);
+
+    NSMutableDictionary *mutableHeaders = [NSMutableDictionary dictionary];
+    [mutableHeaders setValue:[NSString stringWithFormat:@"form-data; name=\"%@\"; filename=\"%@\"", name, fileName] forKey:@"Content-Disposition"];
+    [mutableHeaders setValue:mimeType forKey:@"Content-Type"];
+
+
+    AFHTTPBodyPart *bodyPart = [[AFHTTPBodyPart alloc] init];
+    bodyPart.stringEncoding = self.stringEncoding;
+    bodyPart.headers = mutableHeaders;
+    bodyPart.body = inputStream;
+
+    bodyPart.bodyContentLength = length;
+
+    [self.bodyStream appendHTTPBodyPart:bodyPart];
+}
+
 - (void)appendPartWithFileData:(NSData *)data
                           name:(NSString *)name
                       fileName:(NSString *)fileName
@@ -878,7 +943,7 @@ NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
 - (void)throttleBandwidthWithPacketSize:(NSUInteger)numberOfBytes
                                   delay:(NSTimeInterval)delay
 {
-    self.bodyStream.numberOfBytesInPacket = numberOfBytes;
+    self.bodyStream.bufferLength = numberOfBytes;
     self.bodyStream.delay = delay;
 }
 
@@ -892,7 +957,7 @@ NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
 
     [self.request setValue:[NSString stringWithFormat:@"multipart/form-data; boundary=%@", kAFMultipartFormBoundary] forHTTPHeaderField:@"Content-Type"];
     [self.request setValue:[NSString stringWithFormat:@"%llu", [self.bodyStream contentLength]] forHTTPHeaderField:@"Content-Length"];
-    [self.request setHTTPBodyStream:self.bodyStream];
+    [self.request setHTTPBodyStream:self.bodyStream.inputStream];
 
     return self.request;
 }
@@ -901,24 +966,31 @@ NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
 
 #pragma mark -
 
-@interface AFMultipartBodyStream () <NSCopying>
-@property (nonatomic, assign) NSStreamStatus streamStatus;
-@property (nonatomic, strong) NSError *streamError;
-
+@interface AFMultipartBodyStreamProvider () <NSCopying, NSStreamDelegate>
 @property (nonatomic, assign) NSStringEncoding stringEncoding;
 @property (nonatomic, strong) NSMutableArray *HTTPBodyParts;
 @property (nonatomic, strong) NSEnumerator *HTTPBodyPartEnumerator;
 @property (nonatomic, strong) AFHTTPBodyPart *currentHTTPBodyPart;
+@property (nonatomic, strong) NSInputStream *inputStream;
+@property (nonatomic, strong) NSOutputStream *outputStream;
+@property (nonatomic, strong) NSMutableData *buffer;
 @end
 
-@implementation AFMultipartBodyStream
-@synthesize streamStatus = _streamStatus;
-@synthesize streamError = _streamError;
+static const NSUInteger AFMultipartBodyStreamProviderDefaultBufferLength = 4096;
+
+@implementation AFMultipartBodyStreamProvider {
+@private
+    // Workaround for stream delegates being weakly referenced, but otherwise unowned
+    __strong id _self;
+}
 @synthesize stringEncoding = _stringEncoding;
 @synthesize HTTPBodyParts = _HTTPBodyParts;
 @synthesize HTTPBodyPartEnumerator = _HTTPBodyPartEnumerator;
 @synthesize currentHTTPBodyPart = _currentHTTPBodyPart;
-@synthesize numberOfBytesInPacket = _numberOfBytesInPacket;
+@synthesize inputStream = _inputStream;
+@synthesize outputStream = _outputStream;
+@synthesize buffer = _buffer;
+@synthesize bufferLength = _numberOfBytesInPacket;
 @synthesize delay = _delay;
 
 - (id)initWithStringEncoding:(NSStringEncoding)encoding {
@@ -929,11 +1001,18 @@ NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
 
     self.stringEncoding = encoding;
     self.HTTPBodyParts = [NSMutableArray array];
-    self.numberOfBytesInPacket = NSIntegerMax;
-
+    self.bufferLength = NSIntegerMax;
+    
+    self.buffer = [[NSMutableData alloc] init];
+    self.bufferLength = AFMultipartBodyStreamProviderDefaultBufferLength;
+    
     return self;
 }
 
+- (void)dealloc {
+    _outputStream.delegate = nil;
+}
+
 - (void)setInitialAndFinalBoundaries {
     if ([self.HTTPBodyParts count] > 0) {
         for (AFHTTPBodyPart *bodyPart in self.HTTPBodyParts) {
@@ -950,80 +1029,95 @@ NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
     [self.HTTPBodyParts addObject:bodyPart];
 }
 
+- (NSInputStream *)inputStream {
+    if (_inputStream == nil) {
+        CFReadStreamRef readStream;
+        CFWriteStreamRef writeStream;
+        CFStreamCreateBoundPair(NULL, &readStream, &writeStream, self.bufferLength);
+        _inputStream = CFBridgingRelease(readStream);
+        _outputStream = CFBridgingRelease(writeStream);
+        
+        _outputStream.delegate = self;
+        if ([NSThread isMainThread]) {
+            [_outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
+        } else {
+            dispatch_sync(dispatch_get_main_queue(), ^{
+                [_outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
+            });
+        }
+        [_outputStream open];
+
+        _self = self;
+    }
+    
+    return _inputStream;
+}
+
 - (BOOL)isEmpty {
     return [self.HTTPBodyParts count] == 0;
 }
 
-#pragma mark - NSInputStream
+#pragma mark - NSStreamDelegate
 
-- (NSInteger)read:(uint8_t *)buffer
-        maxLength:(NSUInteger)length
+- (void)stream:(NSStream *)stream
+   handleEvent:(NSStreamEvent)eventCode
 {
-    if ([self streamStatus] == NSStreamStatusClosed) {
-        return 0;
+    if (eventCode & NSStreamEventHasSpaceAvailable) {
+        [self handleOutputStreamSpaceAvailable];
     }
-    NSInteger bytesRead = 0;
+}
 
-    while ((NSUInteger)bytesRead < MIN(length, self.numberOfBytesInPacket)) {
-        if (!self.currentHTTPBodyPart || ![self.currentHTTPBodyPart hasBytesAvailable]) {
-            if (!(self.currentHTTPBodyPart = [self.HTTPBodyPartEnumerator nextObject])) {
-                break;
+- (void)handleOutputStreamSpaceAvailable {
+    while ([_outputStream hasSpaceAvailable]) {
+        if ([_buffer length] > 0) {
+            NSInteger numberOfBytesWritten = [_outputStream write:[_buffer bytes] maxLength:[_buffer length]];
+            if (numberOfBytesWritten < 0) {
+                [self close];
+                return;
             }
+
+            [_buffer replaceBytesInRange:NSMakeRange(0, numberOfBytesWritten) withBytes:NULL length:0];
         } else {
-            bytesRead += [self.currentHTTPBodyPart read:&buffer[bytesRead] maxLength:(length - (NSUInteger)bytesRead)];
+            if (!self.currentHTTPBodyPart) {
+                if (!self.HTTPBodyPartEnumerator) {
+                    self.HTTPBodyPartEnumerator = [self.HTTPBodyParts objectEnumerator];
+                }
+                self.currentHTTPBodyPart = [self.HTTPBodyPartEnumerator nextObject];
+            }
+            
+            if (!self.currentHTTPBodyPart) {
+                [self close];
+                return;
+            }
+            
+            [_buffer setLength:self.bufferLength];
+            
+            NSInteger numberOfBytesRead = [self.currentHTTPBodyPart read:[_buffer mutableBytes] maxLength:[_buffer length]];
+            if (numberOfBytesRead < 0) {
+                [self close];
+                return;
+            }
+            
+            [_buffer setLength:numberOfBytesRead];
+
+            if(numberOfBytesRead == 0) {
+                self.currentHTTPBodyPart = nil;
+            }
+
             if (self.delay > 0.0f) {
                 [NSThread sleepForTimeInterval:self.delay];
             }
         }
     }
-    return bytesRead;
-}
-
-- (BOOL)getBuffer:(__unused uint8_t **)buffer
-           length:(__unused NSUInteger *)len
-{
-    return NO;
-}
-
-- (BOOL)hasBytesAvailable {
-    return [self streamStatus] == NSStreamStatusOpen;
-}
-
-#pragma mark - NSStream
-
-- (void)open {
-    if (self.streamStatus == NSStreamStatusOpen) {
-        return;
-    }
-
-    self.streamStatus = NSStreamStatusOpen;
-
-    [self setInitialAndFinalBoundaries];
-    self.HTTPBodyPartEnumerator = [self.HTTPBodyParts objectEnumerator];
 }
 
 - (void)close {
-    self.streamStatus = NSStreamStatusClosed;
+    [_outputStream close];
+    _outputStream.delegate = nil;
+    
+    _self = nil;
 }
 
-- (id)propertyForKey:(__unused NSString *)key {
-    return nil;
-}
-
-- (BOOL)setProperty:(__unused id)property
-             forKey:(__unused NSString *)key
-{
-    return NO;
-}
-
-- (void)scheduleInRunLoop:(__unused NSRunLoop *)aRunLoop
-                  forMode:(__unused NSString *)mode
-{}
-
-- (void)removeFromRunLoop:(__unused NSRunLoop *)aRunLoop
-                  forMode:(__unused NSString *)mode
-{}
-
 - (unsigned long long)contentLength {
     unsigned long long length = 0;
     for (AFHTTPBodyPart *bodyPart in self.HTTPBodyParts) {
@@ -1033,26 +1127,10 @@ NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
     return length;
 }
 
-#pragma mark - Undocumented CFReadStream Bridged Methods
-
-- (void)_scheduleInCFRunLoop:(__unused CFRunLoopRef)aRunLoop
-                     forMode:(__unused CFStringRef)aMode
-{}
-
-- (void)_unscheduleFromCFRunLoop:(__unused CFRunLoopRef)aRunLoop
-                         forMode:(__unused CFStringRef)aMode
-{}
-
-- (BOOL)_setCFClientFlags:(__unused CFOptionFlags)inFlags
-                 callback:(__unused CFReadStreamClientCallBack)inCallback
-                  context:(__unused CFStreamClientContext *)inContext {
-    return NO;
-}
-
 #pragma mark - NSCopying
 
--(id)copyWithZone:(NSZone *)zone {
-    AFMultipartBodyStream *bodyStreamCopy = [[[self class] allocWithZone:zone] initWithStringEncoding:self.stringEncoding];
+- (id)copyWithZone:(NSZone *)zone {
+    AFMultipartBodyStreamProvider *bodyStreamCopy = [[[self class] allocWithZone:zone] initWithStringEncoding:self.stringEncoding];
 
     for (AFHTTPBodyPart *bodyPart in self.HTTPBodyParts) {
         [bodyStreamCopy appendHTTPBodyPart:[bodyPart copy]];
@@ -1068,10 +1146,12 @@ NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
 #pragma mark -
 
 typedef enum {
+    AFInitialPhase               = 0,
     AFEncapsulationBoundaryPhase = 1,
     AFHeaderPhase                = 2,
     AFBodyPhase                  = 3,
     AFFinalBoundaryPhase         = 4,
+    AFCompletedPhase             = 5,
 } AFHTTPBodyPartReadPhase;
 
 @interface AFHTTPBodyPart () <NSCopying> {
@@ -1118,6 +1198,8 @@ typedef enum {
             _inputStream = [NSInputStream inputStreamWithData:self.body];
         } else if ([self.body isKindOfClass:[NSURL class]]) {
             _inputStream = [NSInputStream inputStreamWithURL:self.body];
+        } else if ([self.body isKindOfClass:[NSInputStream class]]) {
+            _inputStream = self.body;
         }
     }
 
@@ -1152,11 +1234,13 @@ typedef enum {
 }
 
 - (BOOL)hasBytesAvailable {
-    // Allows `read:maxLength:` to be called again if `AFMultipartFormFinalBoundary` doesn't fit into the avaiable buffer
+    // Allows `read:maxLength:` to be called again if `AFMultipartFormFinalBoundary` doesn't fit into the available buffer
     if (_phase == AFFinalBoundaryPhase) {
         return YES;
     }
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wcovered-switch-default"
     switch (self.inputStream.streamStatus) {
         case NSStreamStatusNotOpen:
         case NSStreamStatusOpening:
@@ -1170,6 +1254,8 @@ typedef enum {
         default:
             return NO;
     }
+#pragma clang diagnostic pop
+
 }
 
 - (NSInteger)read:(uint8_t *)buffer
@@ -1227,7 +1313,12 @@ typedef enum {
         return YES;
     }
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wcovered-switch-default"
     switch (_phase) {
+        case AFInitialPhase:
+            _phase = AFEncapsulationBoundaryPhase;
+            break;
         case AFEncapsulationBoundaryPhase:
             _phase = AFHeaderPhase;
             break;
@@ -1241,10 +1332,13 @@ typedef enum {
             _phase = AFFinalBoundaryPhase;
             break;
         case AFFinalBoundaryPhase:
-            _phase = AFEncapsulationBoundaryPhase;
+        case AFCompletedPhase:
+        default:
+            _phase = AFCompletedPhase;
             break;
     }
     _phaseReadOffset = 0;
+#pragma clang diagnostic pop
 
     return YES;
 }
diff --git a/AFNetworking/AFHTTPRequestOperation.m b/AFNetworking/AFHTTPRequestOperation.m
index d9cca8e..98aa07c 100644
--- a/AFNetworking/AFHTTPRequestOperation.m
+++ b/AFNetworking/AFHTTPRequestOperation.m
@@ -30,7 +30,6 @@
 #define AF_CAST_TO_BLOCK __bridge void *
 #endif
 
-// We do a little bit of duck typing in this file which can trigger this warning.  Turn it off for this source file.
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wstrict-selector-match"
 
@@ -108,18 +107,12 @@ static void AFSwizzleClassMethodWithClassAndSelectorUsingBlock(Class klass, SEL
 @property (readwrite, nonatomic, strong) NSURLRequest *request;
 @property (readwrite, nonatomic, strong) NSHTTPURLResponse *response;
 @property (readwrite, nonatomic, strong) NSError *HTTPError;
-@property (readwrite, nonatomic, copy) NSString *HTTPResponseString;
-@property (readwrite, nonatomic, assign) long long totalContentLength;
-@property (readwrite, nonatomic, assign) long long offsetContentLength;
 @end
 
 @implementation AFHTTPRequestOperation
 @synthesize HTTPError = _HTTPError;
-@synthesize HTTPResponseString = _HTTPResponseString;
 @synthesize successCallbackQueue = _successCallbackQueue;
 @synthesize failureCallbackQueue = _failureCallbackQueue;
-@synthesize totalContentLength = _totalContentLength;
-@synthesize offsetContentLength = _offsetContentLength;
 @dynamic request;
 @dynamic response;
 
@@ -169,23 +162,19 @@ static void AFSwizzleClassMethodWithClassAndSelectorUsingBlock(Class klass, SEL
     }
 }
 
-- (NSString *)responseString {
+- (NSStringEncoding)responseStringEncoding {
     // When no explicit charset parameter is provided by the sender, media subtypes of the "text" type are defined to have a default charset value of "ISO-8859-1" when received via HTTP. Data in character sets other than "ISO-8859-1" or its subsets MUST be labeled with an appropriate charset value.
     // See http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.4.1
-    if (!self.HTTPResponseString && self.response && !self.response.textEncodingName && self.responseData) {
+    if (self.response && !self.response.textEncodingName && self.responseData) {
         NSString *type = nil;
         AFGetMediaTypeAndSubtypeWithString([[self.response allHeaderFields] valueForKey:@"Content-Type"], &type, nil);
 
         if ([type isEqualToString:@"text"]) {
-            self.HTTPResponseString = [[NSString alloc] initWithData:self.responseData encoding:NSISOLatin1StringEncoding];
+            return NSISOLatin1StringEncoding;
         }
     }
 
-    if (self.HTTPResponseString) {
-        return self.HTTPResponseString;
-    } else {
-        return [super responseString];
-    }
+    return [super responseStringEncoding];
 }
 
 - (void)pause {
@@ -324,46 +313,6 @@ static void AFSwizzleClassMethodWithClassAndSelectorUsingBlock(Class klass, SEL
     return [[self acceptableContentTypes] intersectsSet:AFContentTypesFromHTTPHeader([request valueForHTTPHeaderField:@"Accept"])];
 }
 
-#pragma mark - NSURLConnectionDelegate
-
-- (void)connection:(__unused NSURLConnection *)connection
-didReceiveResponse:(NSURLResponse *)response
-{
-    self.response = (NSHTTPURLResponse *)response;
-
-    // Set Content-Range header if status code of response is 206 (Partial Content)
-    // See http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.7
-    long long totalContentLength = self.response.expectedContentLength;
-    long long fileOffset = 0;
-    NSUInteger statusCode = ([self.response isKindOfClass:[NSHTTPURLResponse class]]) ? (NSUInteger)[self.response statusCode] : 200;
-    if (statusCode == 206) {
-        NSString *contentRange = [self.response.allHeaderFields valueForKey:@"Content-Range"];
-        if ([contentRange hasPrefix:@"bytes"]) {
-            NSArray *byteRanges = [contentRange componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@" -/"]];
-            if ([byteRanges count] == 4) {
-                fileOffset = [[byteRanges objectAtIndex:1] longLongValue];
-                totalContentLength = [[byteRanges objectAtIndex:2] longLongValue] ?: -1; // if this is "*", it's converted to 0, but -1 is default.
-            }
-        }
-    } else {
-        if ([self.outputStream propertyForKey:NSStreamFileCurrentOffsetKey]) {
-            [self.outputStream setProperty:[NSNumber numberWithInteger:0] forKey:NSStreamFileCurrentOffsetKey];
-        } else {
-            if ([[self.outputStream propertyForKey:NSStreamDataWrittenToMemoryStreamKey] length] > 0) {
-                self.outputStream = [NSOutputStream outputStreamToMemory];
-
-                NSRunLoop *runLoop = [NSRunLoop currentRunLoop];
-                for (NSString *runLoopMode in self.runLoopModes) {
-                    [self.outputStream scheduleInRunLoop:runLoop forMode:runLoopMode];
-                }
-            }
-        }
-    }
-
-    self.offsetContentLength = MAX(fileOffset, 0);
-    self.totalContentLength = totalContentLength;
-    
-    [self.outputStream open];
-}
-
 @end
+
+#pragma clang diagnostic pop
diff --git a/AFNetworking/AFImageRequestOperation.m b/AFNetworking/AFImageRequestOperation.m
index e39c9d6..0a0390f 100644
--- a/AFNetworking/AFImageRequestOperation.m
+++ b/AFNetworking/AFImageRequestOperation.m
@@ -22,11 +22,12 @@
 
 #import "AFImageRequestOperation.h"
 
-static dispatch_queue_t af_image_request_operation_processing_queue;
 static dispatch_queue_t image_request_operation_processing_queue() {
-    if (af_image_request_operation_processing_queue == NULL) {
-        af_image_request_operation_processing_queue = dispatch_queue_create("com.alamofire.networking.image-request.processing", 0);
-    }
+    static dispatch_queue_t af_image_request_operation_processing_queue;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        af_image_request_operation_processing_queue = dispatch_queue_create("com.alamofire.networking.image-request.processing", DISPATCH_QUEUE_CONCURRENT);
+    });
 
     return af_image_request_operation_processing_queue;
 }
diff --git a/AFNetworking/AFJSONRequestOperation.m b/AFNetworking/AFJSONRequestOperation.m
index bb893b5..008aacc 100644
--- a/AFNetworking/AFJSONRequestOperation.m
+++ b/AFNetworking/AFJSONRequestOperation.m
@@ -22,11 +22,12 @@
 
 #import "AFJSONRequestOperation.h"
 
-static dispatch_queue_t af_json_request_operation_processing_queue;
 static dispatch_queue_t json_request_operation_processing_queue() {
-    if (af_json_request_operation_processing_queue == NULL) {
-        af_json_request_operation_processing_queue = dispatch_queue_create("com.alamofire.networking.json-request.processing", 0);
-    }
+    static dispatch_queue_t af_json_request_operation_processing_queue;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        af_json_request_operation_processing_queue = dispatch_queue_create("com.alamofire.networking.json-request.processing", DISPATCH_QUEUE_CONCURRENT);
+    });
 
     return af_json_request_operation_processing_queue;
 }
@@ -34,12 +35,14 @@ static dispatch_queue_t json_request_operation_processing_queue() {
 @interface AFJSONRequestOperation ()
 @property (readwrite, nonatomic, strong) id responseJSON;
 @property (readwrite, nonatomic, strong) NSError *JSONError;
+@property (readwrite, nonatomic, strong) NSRecursiveLock *lock;
 @end
 
 @implementation AFJSONRequestOperation
 @synthesize responseJSON = _responseJSON;
 @synthesize JSONReadingOptions = _JSONReadingOptions;
 @synthesize JSONError = _JSONError;
+@dynamic lock;
 
 + (instancetype)JSONRequestOperationWithRequest:(NSURLRequest *)urlRequest
 										success:(void (^)(NSURLRequest *request, NSHTTPURLResponse *response, id JSON))success
@@ -61,6 +64,7 @@ static dispatch_queue_t json_request_operation_processing_queue() {
 
 
 - (id)responseJSON {
+    [self.lock lock];
     if (!_responseJSON && [self.responseData length] > 0 && [self isFinished] && !self.JSONError) {
         NSError *error = nil;
 
@@ -77,6 +81,7 @@ static dispatch_queue_t json_request_operation_processing_queue() {
 
         self.JSONError = error;
     }
+    [self.lock unlock];
 
     return _responseJSON;
 }
diff --git a/AFNetworking/AFNetworkActivityIndicatorManager.m b/AFNetworking/AFNetworkActivityIndicatorManager.m
index 5b9ec82..b7e4256 100644
--- a/AFNetworking/AFNetworkActivityIndicatorManager.m
+++ b/AFNetworking/AFNetworkActivityIndicatorManager.m
@@ -62,8 +62,8 @@ static NSTimeInterval const kAFNetworkActivityIndicatorInvisibilityDelay = 0.17;
         return nil;
     }
 
-    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(incrementActivityCount) name:AFNetworkingOperationDidStartNotification object:nil];
-    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(decrementActivityCount) name:AFNetworkingOperationDidFinishNotification object:nil];
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(networkingOperationDidStart:) name:AFNetworkingOperationDidStartNotification object:nil];
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(networkingOperationDidFinish:) name:AFNetworkingOperationDidFinishNotification object:nil];
 
     return self;
 }
@@ -126,6 +126,20 @@ static NSTimeInterval const kAFNetworkActivityIndicatorInvisibilityDelay = 0.17;
     [self updateNetworkActivityIndicatorVisibilityDelayed];
 }
 
+- (void)networkingOperationDidStart:(NSNotification *)notification {
+    AFURLConnectionOperation *connectionOperation = [notification object];
+    if (connectionOperation.request.URL) {
+        [self incrementActivityCount];
+    }
+}
+
+- (void)networkingOperationDidFinish:(NSNotification *)notification {
+    AFURLConnectionOperation *connectionOperation = [notification object];
+    if (connectionOperation.request.URL) {
+        [self decrementActivityCount];
+    }
+}
+
 @end
 
 #endif
diff --git a/AFNetworking/AFPropertyListRequestOperation.m b/AFNetworking/AFPropertyListRequestOperation.m
index 38229ce..4d6123b 100644
--- a/AFNetworking/AFPropertyListRequestOperation.m
+++ b/AFNetworking/AFPropertyListRequestOperation.m
@@ -22,11 +22,12 @@
 
 #import "AFPropertyListRequestOperation.h"
 
-static dispatch_queue_t af_property_list_request_operation_processing_queue;
 static dispatch_queue_t property_list_request_operation_processing_queue() {
-    if (af_property_list_request_operation_processing_queue == NULL) {
-        af_property_list_request_operation_processing_queue = dispatch_queue_create("com.alamofire.networking.property-list-request.processing", 0);
-    }
+    static dispatch_queue_t af_property_list_request_operation_processing_queue;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        af_property_list_request_operation_processing_queue = dispatch_queue_create("com.alamofire.networking.property-list-request.processing", DISPATCH_QUEUE_CONCURRENT);
+    });
 
     return af_property_list_request_operation_processing_queue;
 }
diff --git a/AFNetworking/AFURLConnectionOperation.h b/AFNetworking/AFURLConnectionOperation.h
index c580840..42c74d4 100644
--- a/AFNetworking/AFURLConnectionOperation.h
+++ b/AFNetworking/AFURLConnectionOperation.h
@@ -59,6 +59,14 @@
  The built-in `completionBlock` provided by `NSOperation` allows for custom behavior to be executed after the request finishes. It is a common pattern for class constructors in subclasses to take callback block parameters, and execute them conditionally in the body of its `completionBlock`. Make sure to handle cancelled operations appropriately when setting a `completionBlock` (i.e. returning early before parsing response data). See the implementation of any of the `AFHTTPRequestOperation` subclasses for an example of this.
 
  Subclasses are strongly discouraged from overriding `setCompletionBlock:`, as `AFURLConnectionOperation`'s implementation includes a workaround to mitigate retain cycles, and what Apple rather ominously refers to as ["The Deallocation Problem"](http://developer.apple.com/library/ios/#technotes/tn2109/).
+ 
+ ## SSL Pinning
+ 
+ Relying on the CA trust model to validate SSL certificates exposes your app to security vulnerabilities, such as man-in-the-middle attacks. For applications that connect to known servers, SSL certificate pinning provides an increased level of security, by checking server certificate validity against those specified in the app bundle.
+ 
+ SSL with certificate pinning is strongly recommended for any application that transmits sensitive information to an external webservice.
+
+ When `_AFNETWORKING_PIN_SSL_CERTIFICATES_` is defined and the Security framework is linked, connections will be validated on all matching certificates with a `.cer` extension in the bundle root.
 
  ## NSCoding & NSCopying Conformance
 
@@ -75,7 +83,21 @@
  - A copy of an operation will not include the `outputStream` of the original.
  - Operation copies do not include `completionBlock`. `completionBlock` often strongly captures a reference to `self`, which would otherwise have the unintuitive side-effect of pointing to the _original_ operation when copied.
  */
-@interface AFURLConnectionOperation : NSOperation <NSURLConnectionDelegate, NSCoding, NSCopying>
+
+#ifdef _AFNETWORKING_PIN_SSL_CERTIFICATES_
+typedef enum {
+    AFSSLPinningModeNone,
+    AFSSLPinningModePublicKey,
+    AFSSLPinningModeCertificate,
+} AFURLConnectionOperationSSLPinningMode;
+#endif
+
+@interface AFURLConnectionOperation : NSOperation <NSURLConnectionDelegate,
+#if (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_5_0) || \
+    (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED >= __MAC_10_8)
+NSURLConnectionDataDelegate, 
+#endif
+NSCoding, NSCopying>
 
 ///-------------------------------
 /// @name Accessing Run Loop Modes
@@ -131,7 +153,6 @@
  */
 @property (readonly, nonatomic, assign) NSStringEncoding responseStringEncoding;
 
-
 ///-------------------------------
 /// @name Managing URL Credentials
 ///-------------------------------
@@ -150,6 +171,15 @@
  */
 @property (nonatomic, strong) NSURLCredential *credential;
 
+/**
+ The pinning mode which will be used for SSL connections. `AFSSLPinningModePublicKey` by default.
+ 
+ @discussion To enable SSL Pinning, `#define _AFNETWORKING_PIN_SSL_CERTIFICATES_` in `Prefix.pch`. Also, make sure that the Security framework is linked with the binary. See the "SSL Pinning" section in the `AFURLConnectionOperation`" header for more information.
+ */
+#ifdef _AFNETWORKING_PIN_SSL_CERTIFICATES_
+@property (nonatomic, assign) AFURLConnectionOperationSSLPinningMode SSLPinningMode;
+#endif
+
 ///------------------------
 /// @name Accessing Streams
 ///------------------------
@@ -290,6 +320,25 @@
 ///----------------
 
 /**
+ ## SSL Pinning Options
+
+ The following constants are provided by `AFURLConnectionOperation` as possible SSL Pinning options.
+
+ enum {
+ AFSSLPinningModeNone,
+ AFSSLPinningModePublicKey,
+ AFSSLPinningModeCertificate,
+ }
+ 
+ `AFSSLPinningModeNone`
+ Do not pin SSL connections
+
+ `AFSSLPinningModePublicKey`
+ Pin SSL connections to certificate public key (SPKI).
+
+ `AFSSLPinningModeCertificate`
+ Pin SSL connections to exact certificate. This may cause problems when your certificate expires and needs re-issuance.
+
  ## User info dictionary keys
 
  These keys may exist in the user info dictionary, in addition to those defined for NSError.
diff --git a/AFNetworking/AFURLConnectionOperation.m b/AFNetworking/AFURLConnectionOperation.m
index 99e1693..ca9780c 100644
--- a/AFNetworking/AFURLConnectionOperation.m
+++ b/AFNetworking/AFURLConnectionOperation.m
@@ -145,6 +145,9 @@ static inline BOOL AFStateTransitionIsValid(AFOperationState fromState, AFOperat
 @dynamic inputStream;
 @synthesize outputStream = _outputStream;
 @synthesize credential = _credential;
+#ifdef _AFNETWORKING_PIN_SSL_CERTIFICATES_
+@synthesize SSLPinningMode = _SSLPinningMode;
+#endif
 @synthesize shouldUseCredentialStorage = _shouldUseCredentialStorage;
 @synthesize userInfo = _userInfo;
 @synthesize backgroundTaskIdentifier = _backgroundTaskIdentifier;
@@ -167,7 +170,6 @@ static inline BOOL AFStateTransitionIsValid(AFOperationState fromState, AFOperat
 + (NSThread *)networkRequestThread {
     static NSThread *_networkRequestThread = nil;
     static dispatch_once_t oncePredicate;
-
     dispatch_once(&oncePredicate, ^{
         _networkRequestThread = [[NSThread alloc] initWithTarget:self selector:@selector(networkRequestThreadEntryPoint:) object:nil];
         [_networkRequestThread start];
@@ -176,24 +178,61 @@ static inline BOOL AFStateTransitionIsValid(AFOperationState fromState, AFOperat
     return _networkRequestThread;
 }
 
+#ifdef _AFNETWORKING_PIN_SSL_CERTIFICATES_
 + (NSArray *)pinnedCertificates {
     static NSArray *_pinnedCertificates = nil;
     static dispatch_once_t onceToken;
-
     dispatch_once(&onceToken, ^{
         NSBundle *bundle = [NSBundle bundleForClass:[self class]];
         NSArray *paths = [bundle pathsForResourcesOfType:@"cer" inDirectory:@"."];
-        NSMutableArray *certificates = [NSMutableArray array];
+
+        NSMutableArray *certificates = [NSMutableArray arrayWithCapacity:[paths count]];
         for (NSString *path in paths) {
             NSData *certificateData = [NSData dataWithContentsOfFile:path];
             [certificates addObject:certificateData];
         }
+        
         _pinnedCertificates = [[NSArray alloc] initWithArray:certificates];
     });
 
     return _pinnedCertificates;
 }
 
++ (NSArray *)pinnedPublicKeys {
+    static NSArray *_pinnedPublicKeys = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        NSArray *pinnedCertificates = [self pinnedCertificates];
+        NSMutableArray *publicKeys = [NSMutableArray arrayWithCapacity:[pinnedCertificates count]];
+        
+        for (NSData *data in pinnedCertificates) {
+            SecCertificateRef allowedCertificate = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)data);
+            NSCParameterAssert(allowedCertificate);
+
+            SecCertificateRef allowedCertificates[] = {allowedCertificate};
+            CFArrayRef certificates = CFArrayCreate(NULL, (const void **)allowedCertificates, 1, NULL);
+            
+            SecPolicyRef policy = SecPolicyCreateBasicX509();
+            SecTrustRef allowedTrust = NULL;
+            OSStatus status = SecTrustCreateWithCertificates(certificates, policy, &allowedTrust);
+            NSAssert(status == noErr, @"SecTrustCreateWithCertificates error: %ld", (long int)status);
+            
+            SecKeyRef allowedPublicKey = SecTrustCopyPublicKey(allowedTrust);
+            [publicKeys addObject:(__bridge_transfer id)allowedPublicKey];
+
+            CFRelease(allowedTrust);
+            CFRelease(policy);
+            CFRelease(certificates);
+            CFRelease(allowedCertificate);
+        }
+
+        _pinnedPublicKeys = [[NSArray alloc] initWithArray:publicKeys];
+    });
+    
+    return _pinnedPublicKeys;
+}
+#endif
+
 - (id)initWithRequest:(NSURLRequest *)urlRequest {
     self = [super init];
     if (!self) {
@@ -344,19 +383,6 @@ static inline BOOL AFStateTransitionIsValid(AFOperationState fromState, AFOperat
     [self didChangeValueForKey:oldStateKey];
     [self didChangeValueForKey:newStateKey];
     [self.lock unlock];
-
-    dispatch_async(dispatch_get_main_queue(), ^{
-        switch (state) {
-            case AFOperationExecutingState:
-                [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingOperationDidStartNotification object:self];
-                break;
-            case AFOperationFinishedState:
-                [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingOperationDidFinishNotification object:self];
-                break;
-            default:
-                break;
-        }
-    });
 }
 
 - (NSString *)responseString {
@@ -371,7 +397,7 @@ static inline BOOL AFStateTransitionIsValid(AFOperationState fromState, AFOperat
 
 - (NSStringEncoding)responseStringEncoding {
     [self.lock lock];
-    if (!_responseStringEncoding) {
+    if (!_responseStringEncoding && self.response) {
         NSStringEncoding stringEncoding = NSUTF8StringEncoding;
         if (self.response.textEncodingName) {
             CFStringEncoding IANAEncoding = CFStringConvertIANACharSetNameToEncoding((__bridge CFStringRef)self.response.textEncodingName);
@@ -398,7 +424,8 @@ static inline BOOL AFStateTransitionIsValid(AFOperationState fromState, AFOperat
         [self.connection performSelector:@selector(cancel) onThread:[[self class] networkRequestThread] withObject:nil waitUntilDone:NO modes:[self.runLoopModes allObjects]];
 
         dispatch_async(dispatch_get_main_queue(), ^{
-            [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingOperationDidFinishNotification object:self];
+            NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+            [notificationCenter postNotificationName:AFNetworkingOperationDidFinishNotification object:self];
         });
     }
 
@@ -453,24 +480,34 @@ static inline BOOL AFStateTransitionIsValid(AFOperationState fromState, AFOperat
 
 - (void)operationDidStart {
     [self.lock lock];
-    if ([self isCancelled]) {
-        [self finish];
-    } else {
+    if (! [self isCancelled]) {
         self.connection = [[NSURLConnection alloc] initWithRequest:self.request delegate:self startImmediately:NO];
-
+        
         NSRunLoop *runLoop = [NSRunLoop currentRunLoop];
         for (NSString *runLoopMode in self.runLoopModes) {
             [self.connection scheduleInRunLoop:runLoop forMode:runLoopMode];
             [self.outputStream scheduleInRunLoop:runLoop forMode:runLoopMode];
         }
-
+        
         [self.connection start];
     }
     [self.lock unlock];
+    
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingOperationDidStartNotification object:self];
+    });
+    
+    if ([self isCancelled]) {
+        [self finish];
+    }
 }
 
 - (void)finish {
     self.state = AFOperationFinishedState;
+    
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingOperationDidFinishNotification object:self];
+    });
 }
 
 - (void)cancel {
@@ -517,12 +554,57 @@ willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challe
             NSURLCredential *credential = [NSURLCredential credentialForTrust:serverTrust];
             [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];
         } else {
-            [[challenge sender] cancelAuthenticationChallenge:challenge];
+            switch (self.SSLPinningMode) {
+                case AFSSLPinningModePublicKey: {
+                    id publicKey = (__bridge_transfer id)SecTrustCopyPublicKey(serverTrust);
+
+                    if ([[self.class pinnedPublicKeys] containsObject:publicKey]) {
+                        NSURLCredential *credential = [NSURLCredential credentialForTrust:serverTrust];
+                        [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];
+                    } else {
+                        [[challenge sender] cancelAuthenticationChallenge:challenge];
+                    }
+
+                    break;
+                }
+                case AFSSLPinningModeCertificate: {
+                    SecCertificateRef serverCertificate = SecTrustGetCertificateAtIndex(serverTrust, 0);
+                    NSData *serverCertificateData = (__bridge_transfer NSData *)SecCertificateCopyData(serverCertificate);
+
+                    if ([[[self class] pinnedCertificates] containsObject:serverCertificateData]) {
+                        NSURLCredential *credential = [NSURLCredential credentialForTrust:serverTrust];
+                        [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];
+                    } else {
+                        [[challenge sender] cancelAuthenticationChallenge:challenge];
+                    }
+                    
+                    break;
+                }
+                case AFSSLPinningModeNone: {
+#ifdef _AFNETWORKING_ALLOW_INVALID_SSL_CERTIFICATES_
+                    NSURLCredential *credential = [NSURLCredential credentialForTrust:serverTrust];
+                    [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];
+#else
+                    SecTrustResultType result = 0;
+                    OSStatus status = SecTrustEvaluate(serverTrust, &result);
+                    NSAssert(status == noErr, @"SecTrustEvaluate error: %ld", (long int)status);
+                    
+                    if (result == kSecTrustResultUnspecified || result == kSecTrustResultProceed) {
+                        NSURLCredential *credential = [NSURLCredential credentialForTrust:serverTrust];
+                        [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];
+                    } else {
+                        [[challenge sender] cancelAuthenticationChallenge:challenge];
+                    }
+#endif
+                    break;
+                }
+            }
         }
     }
 }
 #endif
 
+
 - (BOOL)connection:(NSURLConnection *)connection
 canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace
 {
@@ -631,18 +713,18 @@ didReceiveResponse:(NSURLResponse *)response
 - (void)connection:(NSURLConnection __unused *)connection
     didReceiveData:(NSData *)data
 {
-    self.totalBytesRead += [data length];
-
     if ([self.outputStream hasSpaceAvailable]) {
         const uint8_t *dataBuffer = (uint8_t *) [data bytes];
         [self.outputStream write:&dataBuffer[0] maxLength:[data length]];
     }
-
-    if (self.downloadProgress) {
-        dispatch_async(dispatch_get_main_queue(), ^{
+    
+    dispatch_async(dispatch_get_main_queue(), ^{
+        self.totalBytesRead += [data length];
+        
+        if (self.downloadProgress) {
             self.downloadProgress([data length], self.totalBytesRead, self.response.expectedContentLength);
-        });
-    }
+        }
+    });
 }
 
 - (void)connectionDidFinishLoading:(NSURLConnection __unused *)connection {
diff --git a/AFNetworking/AFXMLRequestOperation.m b/AFNetworking/AFXMLRequestOperation.m
index 7e6b352..30a76b9 100644
--- a/AFNetworking/AFXMLRequestOperation.m
+++ b/AFNetworking/AFXMLRequestOperation.m
@@ -24,11 +24,12 @@
 
 #include <Availability.h>
 
-static dispatch_queue_t af_xml_request_operation_processing_queue;
 static dispatch_queue_t xml_request_operation_processing_queue() {
-    if (af_xml_request_operation_processing_queue == NULL) {
-        af_xml_request_operation_processing_queue = dispatch_queue_create("com.alamofire.networking.xml-request.processing", 0);
-    }
+    static dispatch_queue_t af_xml_request_operation_processing_queue;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        af_xml_request_operation_processing_queue = dispatch_queue_create("com.alamofire.networking.xml-request.processing", DISPATCH_QUEUE_CONCURRENT);
+    });
 
     return af_xml_request_operation_processing_queue;
 }
diff --git a/AFNetworking/UIImageView+AFNetworking.m b/AFNetworking/UIImageView+AFNetworking.m
index 2e8b9c1..f340997 100644
--- a/AFNetworking/UIImageView+AFNetworking.m
+++ b/AFNetworking/UIImageView+AFNetworking.m
@@ -87,7 +87,6 @@ static char kAFImageRequestOperationObjectKey;
        placeholderImage:(UIImage *)placeholderImage
 {
     NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
-    [request setHTTPShouldHandleCookies:NO];
     [request addValue:@"image/*" forHTTPHeaderField:@"Accept"];
 
     [self setImageWithURLRequest:request placeholderImage:placeholderImage success:nil failure:nil];
@@ -102,21 +101,22 @@ static char kAFImageRequestOperationObjectKey;
 
     UIImage *cachedImage = [[[self class] af_sharedImageCache] cachedImageForRequest:urlRequest];
     if (cachedImage) {
-        self.image = cachedImage;
-        self.af_imageRequestOperation = nil;
-
         if (success) {
             success(nil, nil, cachedImage);
+        } else {
+            self.image = cachedImage;
         }
+
+        self.af_imageRequestOperation = nil;
     } else {
         self.image = placeholderImage;
 
         AFImageRequestOperation *requestOperation = [[AFImageRequestOperation alloc] initWithRequest:urlRequest];
         [requestOperation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
-            if ([[urlRequest URL] isEqual:[[self.af_imageRequestOperation request] URL]]) {
+            if ([urlRequest isEqual:[self.af_imageRequestOperation request]]) {
                 if (success) {
                     success(operation.request, operation.response, responseObject);
-                } else {
+                } else if (responseObject) {
                     self.image = responseObject;
                 }
 
@@ -127,7 +127,7 @@ static char kAFImageRequestOperationObjectKey;
 
             [[[self class] af_sharedImageCache] cacheImage:responseObject forRequest:urlRequest];
         } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
-            if ([[urlRequest URL] isEqual:[[self.af_imageRequestOperation request] URL]]) {
+            if ([urlRequest isEqual:[self.af_imageRequestOperation request]]) {
                 if (failure) {
                     failure(operation.request, operation.response, error);
                 }
diff --git a/CHANGES b/CHANGES
index 70f5a33..0767b58 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,67 +1,195 @@
+= 1.2.0 (2013-03-24)
+
+ * Add `SSLPinningMode` property to `AFHTTPClient` (Oliver Letterer, Kevin
+Harwood, Adam Becevello, Dustin Barker, Mattt Thompson)
+
+ * Add single quote ("'"), comma (","), and asterix ("*") to escaped URL
+encoding characters (Eric Florenzano, Marc Nijdam, Garrett Murray)
+
+ * Add `credential` property to `AFURLConnectionOperation` (Mattt Thompson)
+
+ * Add `-setDefaultCredential:` to `AFHTTPClient`
+
+ * Add `shouldUseCredentialStorage` property to `AFURLConnectionOperation`
+(Mattt Thompson)
+
+ * Add support for repeated key value pairs in `AFHTTPClient` URL query string
+(Nick Dawson)
+
+ * Add `AFMultipartFormData -
+appendPartWithFileURL:name:fileName:mimeType:error` (Daniel Rodríguez Troitiño)
+
+ * Add `AFMultipartFormData -
+appendPartWithInputStream:name:fileName:mimeType:` (@joein3d)
+
+ * Change SSL pinning to be runtime property on `AFURLConnectionOperation`
+rather than defined by macro (Oliver Letterer)
+
+ * Change `AFMultipartBodyStream` to `AFMultipartBodyStreamProvider`, vending
+one side of a bound CFStream pair rather than subclassing `NSInputStream` (Mike
+Ash)
+
+ * Change default `Accept-Language` header in `AFHTTPClient` (@therigu, Mattt
+Thompson)
+
+ * Change `AFHTTPClient` operation cancellation to be based on request URL path
+rather than absolute URL string (Mattt Thompson)
+
+ * Change request operation subclass processing queues to use
+`DISPATCH_QUEUE_CONCURRENT` (Mattt Thompson)
+
+ * Change `UIImageView+AFNetworking` to resolve asymmetry in cached image case
+between success block provided and not provided (@Eveets, Mattt Thompson)
+
+ * Change `UIImageView+AFNetworking` to compare `NSURLRequest` instead of
+`NSURL` to determine if previous request was equivalent (Cédric Luthi)
+
+ * Change `UIImageView+AFNetworking` to only set image if non-`nil` (Sean
+Kovacs)
+
+ * Change indentation settings to four spaces at the project level (Cédric
+Luthi)
+
+ * Change `AFNetworkActivityIndicatorManager` to only update if requests have a
+non-`nil` URL (Cédric Luthi)
+
+ * Change `UIImageView+AFNetworking` to not do `setHTTPShouldHandleCookies`
+(Konstantinos Vaggelakos)
+
+ * Fix request stream exhaustion error on authentication challenges (Alex
+Burgel)
+
+ * Fix implementation to use `NSURL` methods instead of `CFURL` functions where
+applicable (Cédric Luthi)
+
+ * Fix race condition in `UIImageView+AFNetworking` (Peyman)
+
+ * Fix `responseJSON`, `responseString`, and `responseStringEncoding` to be
+threadsafe (Jon Parise, Mattt Thompson)
+
+ * Fix `AFContentTypeForPathExtension` to ensure non-`NULL` content return
+value (Zach Waugh)
+
+ * Fix documentation for `appendPartWithFileURL:name:error:`
+ (Daniel Rodríguez Troitiño)
+
+ * Fix request operation subclass processing queues to initialize with
+`dispatch_once` (Sasmito Adibowo)
+
+ * Fix posting of `AFNetworkingOperationDidStartNotification` and
+`AFNetworkingOperationDidFinishNotification` to avoid crashes when logging in
+response to notifications (Blake Watters)
+
+ * Fix ordering of registered operation consultation in `AFHTTPClient` (Joel
+Parsons)
+
+ * Fix warning: multiple methods named 'postNotificationName:object:' found
+[-Wstrict-selector-match] (Oliver Jones)
+
+ * Fix warning: multiple methods named 'objectForKey:' found
+[-Wstrict-selector-match] (Oliver Jones)
+
+ * Fix warning: weak receiver may be unpredictably set to nil
+[-Wreceiver-is-weak] (Oliver Jones)
+
+ * Fix missing #pragma clang diagnostic pop (Steven Fisher)
+
 = 1.1.0 (2012-12-27)
 
- * Add optional SSL certificate pinning with `#define _AFNETWORKING_PIN_SSL_CERTIFICATES_` (Dustin Barker)
+ * Add optional SSL certificate pinning with `#define
+_AFNETWORKING_PIN_SSL_CERTIFICATES_` (Dustin Barker)
 
- * Add `responseStringEncoding` property to `AFURLConnectionOperation` (Mattt Thompson)
+ * Add `responseStringEncoding` property to `AFURLConnectionOperation` (Mattt
+Thompson)
 
- * Add `userInfo` property to `AFURLConnectionOperation` (Mattt Thompson, Steven Fisher)
+ * Add `userInfo` property to `AFURLConnectionOperation` (Mattt Thompson,
+Steven Fisher)
 
- * Change behavior to cause a failure when an operation is cancelled (Daniel Tull)
+ * Change behavior to cause a failure when an operation is cancelled (Daniel
+Tull)
 
  * Change return type of class constructors to `instancetype` (@guykogus)
 
- * Change notifications to always being posted on an asynchronously-dispatched block run on the main queue (Evadne Wu, Mattt Thompson)
+ * Change notifications to always being posted on an asynchronously-dispatched
+block run on the main queue (Evadne Wu, Mattt Thompson)
 
- * Change from NSLocalizedString to NSLocalizedStringFromTable with AFNetworking.strings table for localized strings (Cédric Luthi)
+ * Change from NSLocalizedString to NSLocalizedStringFromTable with
+AFNetworking.strings table for localized strings (Cédric Luthi)
 
- * Change `-appendPartWithHeaders:body:` to add assertion handler for existence of body data parameter (Jonathan Beilin)
+ * Change `-appendPartWithHeaders:body:` to add assertion handler for existence
+of body data parameter (Jonathan Beilin)
 
- * Change `AFHTTPRequestOperation -responseString` to follow guidelines from RFC 2616 regarding the use of string encoding when none is specified in the response (Jorge Bernal)
+ * Change `AFHTTPRequestOperation -responseString` to follow guidelines from
+RFC 2616 regarding the use of string encoding when none is specified in the
+response (Jorge Bernal)
 
- * Change AFHTTPClient parameter serialization dictionary keys with `caseInsensitiveCompare:` to ensure 
- deterministic ordering of query string parameters, which may otherwise 
- cause ambiguous representations of nested parameters (James Coleman, 
+ * Change AFHTTPClient parameter serialization dictionary keys with
+`caseInsensitiveCompare:` to ensure
+ deterministic ordering of query string parameters, which may otherwise
+ cause ambiguous representations of nested parameters (James Coleman,
  Mattt Thompson)
 
- * Fix -Wstrict-selector-match warnings raised by Xcode 4.6DP3 (Jesse Collis, Cédric Luthi)
+ * Fix -Wstrict-selector-match warnings raised by Xcode 4.6DP3 (Jesse Collis,
+Cédric Luthi)
 
- * Fix NSJSONSerialization crash with Unicode character escapes in JSON response (Mathijs Kadijk)
+ * Fix NSJSONSerialization crash with Unicode character escapes in JSON
+response (Mathijs Kadijk)
 
- * Fix issue with early return in -startMonitoringNetworkReachability if network reachability object could not be created (i.e. invalid hostnames) (Basil Shkara)
+ * Fix issue with early return in -startMonitoringNetworkReachability if
+network reachability object could not be created (i.e. invalid hostnames)
+(Basil Shkara)
 
- * Fix retain cycles in AFImageRequestOperation.m and AFHTTPClient.m caused by strong references within blocks (Nick Forge)
+ * Fix retain cycles in AFImageRequestOperation.m and AFHTTPClient.m caused by
+strong references within blocks (Nick Forge)
 
- * Fix issue caused by Rails behavior of returning a single space in head :ok responses, which is interpreted as invalid (Sebastian Ludwig)
+ * Fix issue caused by Rails behavior of returning a single space in head :ok
+responses, which is interpreted as invalid (Sebastian Ludwig)
 
- * Fix issue in streaming multipart upload, where final encapsulation boundary would not be appended if it was larger than the available buffer, causing a potential timeout (Tomohisa Takaoka, David Kasper)
+ * Fix issue in streaming multipart upload, where final encapsulation boundary
+would not be appended if it was larger than the available buffer, causing a
+potential timeout (Tomohisa Takaoka, David Kasper)
 
  * Fix memory leak of network reachability callback block (Mattt Thompson)
 
- * Fix `-initWithCoder:` for `AFURLConnectionOperation` and `AFHTTPClient` to cast scalar types (Mattt Thompson)
+ * Fix `-initWithCoder:` for `AFURLConnectionOperation` and `AFHTTPClient` to
+cast scalar types (Mattt Thompson)
 
- * Fix bug in `-enqueueBatchOfHTTPRequestOperations:...` to by using `addOperations:waitUntilFinished:` instead of adding each operation individually. (Mattt Thompson)
+ * Fix bug in `-enqueueBatchOfHTTPRequestOperations:...` to by using
+`addOperations:waitUntilFinished:` instead of adding each operation
+individually. (Mattt Thompson)
 
- * Change `#warning` messages of checks for `CoreServices` and `MobileCoreServices` to message according to the build target platform (Mattt Thompson)
+ * Change `#warning` messages of checks for `CoreServices` and
+`MobileCoreServices` to message according to the build target platform (Mattt
+Thompson)
 
- * Change `AFQueryStringFromParametersWithEncoding` to create keys string representations using the description method as specified in documentation (Cédric Luthi)
+ * Change `AFQueryStringFromParametersWithEncoding` to create keys string
+representations using the description method as specified in documentation
+(Cédric Luthi)
 
  * Fix __unused keywords for better Xcode indexing (Christian Rasmussen)
 
  * Fix warning: unused parameter 'x' [-Werror,-Wunused-parameter] (Oliver Jones)
- 
- * Fix warning: property is assumed atomic by default [-Werror,-Wimplicit-atomic-properties] (Oliver Jones)
- 
- * Fix warning: weak receiver may be unpredictably null in ARC mode [-Werror,-Wreceiver-is-weak] (Oliver Jones)
- 
- * Fix warning: multiple methods named 'selector' found [-Werror,-Wstrict-selector-match] (Oliver Jones)
- 
+
+ * Fix warning: property is assumed atomic by default
+[-Werror,-Wimplicit-atomic-properties] (Oliver Jones)
+
+ * Fix warning: weak receiver may be unpredictably null in ARC mode
+[-Werror,-Wreceiver-is-weak] (Oliver Jones)
+
+ * Fix warning: multiple methods named 'selector' found
+[-Werror,-Wstrict-selector-match] (Oliver Jones)
+
  * Fix warning: 'macro' is not defined, evaluates to 0 (Oliver Jones)
- 
- * Fix warning: atomic by default property 'X' has a user (Oliver Jones)defined getter (property should be marked 'atomic' if this is intended) [-Werror, -Wcustom-atomic-properties] (Oliver Jones)
- 
- * Fix warning: 'response' was marked unused but was used [-Werror,-Wused-but-marked-unused] (Oliver Jones)
- 
- * Fix warning: enumeration value 'AFFinalBoundaryPhase' not explicitly handled in switch [-Werror,-Wswitch-enum] (Oliver Jones)
+
+ * Fix warning: atomic by default property 'X' has a user (Oliver Jones)defined
+getter (property should be marked 'atomic' if this is intended) [-Werror,
+-Wcustom-atomic-properties] (Oliver Jones)
+
+ * Fix warning: 'response' was marked unused but was used
+[-Werror,-Wused-but-marked-unused] (Oliver Jones)
+
+ * Fix warning: enumeration value 'AFFinalBoundaryPhase' not explicitly handled
+in switch [-Werror,-Wswitch-enum] (Oliver Jones)
 
 = 1.0.1 / 2012-11-01
 
@@ -72,7 +200,7 @@ was not correctly calculated (Stan Chang Khin Boon)
 placeholderImage:success:failure`:, it is now the responsibility of the
 block to set the image of the image view (Mattt Thompson)
 
- * Add `JSONReadingOptions` property to `AFJSONRequestOperation` (Jeremy 
+ * Add `JSONReadingOptions` property to `AFJSONRequestOperation` (Jeremy
  Foo, Mattt Thompson)
 
  * Using __weak self / __strong self pattern to break retain cycles in
@@ -80,10 +208,10 @@ block to set the image of the image view (Mattt Thompson)
 
  * Fix parameter encoding to leave period (`.`) unescaped (Diego Torres)
 
- * Fixing last file component in multipart form part creation (Sylver 
- Bruneau) 
- 
- * Remove executable permission on AFHTTPClient source files (Andrew 
+ * Fixing last file component in multipart form part creation (Sylver
+ Bruneau)
+
+ * Remove executable permission on AFHTTPClient source files (Andrew
  Sardone)
 
  * Fix warning (error with -Werror) on implicit 64 to 32 conversion (Dan
@@ -96,144 +224,144 @@ block to set the image of the image view (Mattt Thompson)
 = 1.0 / 2012-10-15
 
  * AFNetworking now requires iOS 5 / Mac OSX 10.7 or higher (Mattt Thompson)
- 
+
  * AFNetworking now uses Automatic Reference Counting (ARC) (Mattt Thompson)
 
- * AFNetworking raises compiler warnings for missing features when 
-SystemConfiguration or  CoreServices / MobileCoreServices frameworks are not 
-included in the project and imported in the precompiled headers (Mattt 
+ * AFNetworking raises compiler warnings for missing features when
+SystemConfiguration or  CoreServices / MobileCoreServices frameworks are not
+included in the project and imported in the precompiled headers (Mattt
 Thompson)
 
- * AFNetworking now raises compiler error when not compiled with ARC (Steven 
+ * AFNetworking now raises compiler error when not compiled with ARC (Steven
 Fisher)
 
- * Add `NSCoding` and `NSCopying` protocol conformance to 
+ * Add `NSCoding` and `NSCopying` protocol conformance to
 `AFURLConnectionOperation` and `AFHTTPClient` (Mattt Thompson)
 
- * Add substantial improvements HTTP multipart streaming support, having 
-files streamed directly from disk and read sequentially from a custom input 
+ * Add substantial improvements HTTP multipart streaming support, having
+files streamed directly from disk and read sequentially from a custom input
 stream (Max Lansing, Stan Chang Khin Boon, Mattt Thompson)
- 
- * Add `AFMultipartFormData -throttleBandwidthWithPacketSize:delay:` as 
+
+ * Add `AFMultipartFormData -throttleBandwidthWithPacketSize:delay:` as
 workaround to issues when uploading over 3G (Mattt Thompson)
 
- * Add request and response to `userInfo` of errors returned from failing 
+ * Add request and response to `userInfo` of errors returned from failing
 `AFHTTPRequestOperation` (Mattt Thompson)
 
- * Add `userInfo` dictionary with current status in reachability changes 
+ * Add `userInfo` dictionary with current status in reachability changes
 (Mattt Thompson)
 
- * Add `Accept` header for image requests in `UIImageView` category (Bratley 
+ * Add `Accept` header for image requests in `UIImageView` category (Bratley
 Lower)
 
- * Add explicit declaration of `NSURLConnection` delegate methods so that 
+ * Add explicit declaration of `NSURLConnection` delegate methods so that
 they can be overridden in subclasses (Mattt Thompson, Evan Grim)
 
- * Add parameter validation to match conditions specified in documentation 
+ * Add parameter validation to match conditions specified in documentation
 (Jason Brennan, Mattt Thompson)
 
- * Add import to `UIKit` to avoid build errors from `UIDevice` references in 
+ * Add import to `UIKit` to avoid build errors from `UIDevice` references in
 `User-Agent` default header (Blake Watters)
 
  * Remove `AFJSONUtilities` in favor of `NSJSONSerialization` (Mattt Thompson)
 
- * Remove `extern` declaration of `AFURLEncodedStringFromStringWithEncoding` 
-function (`CFURLCreateStringByAddingPercentEscapes` should be used instead) 
+ * Remove `extern` declaration of `AFURLEncodedStringFromStringWithEncoding`
+function (`CFURLCreateStringByAddingPercentEscapes` should be used instead)
 (Mattt Thompson)
 
- * Remove `setHTTPShouldHandleCookies:NO` from `AFHTTPClient` (@phamsonha, 
+ * Remove `setHTTPShouldHandleCookies:NO` from `AFHTTPClient` (@phamsonha,
 Mattt Thompson)
- 
- * Remove `dispatch_retain` / `dispatch_release` with ARC in iOS 6 (Benoit 
+
+ * Remove `dispatch_retain` / `dispatch_release` with ARC in iOS 6 (Benoit
 Bourdon)
- 
+
  * Fix threading issue with `AFNetworkActivityIndicatorManager` (Eric Patey)
 
- * Fix issue where `AFNetworkActivityIndicatorManager` count could become 
+ * Fix issue where `AFNetworkActivityIndicatorManager` count could become
 negative (@ap4y)
 
- * Fix properties to explicitly set options to suppress warnings (Wen-Hao 
+ * Fix properties to explicitly set options to suppress warnings (Wen-Hao
 Lue, Mattt Thompson)
 
- * Fix compiler warning caused by mismatched types in upload / download 
+ * Fix compiler warning caused by mismatched types in upload / download
 progress blocks (Gareth du Plooy, tomas.a)
- 
- * Fix weak / strong variable relationships in `completionBlock` (Peter 
+
+ * Fix weak / strong variable relationships in `completionBlock` (Peter
 Steinberger)
 
- * Fix string formatting syntax warnings caused by type mismatch (David 
+ * Fix string formatting syntax warnings caused by type mismatch (David
 Keegan, Steven Fisher, George Cox)
 
- * Fix minor potential security vulnerability by explicitly using string 
+ * Fix minor potential security vulnerability by explicitly using string
 format in NSError localizedDescription value in userInfo (Steven Fisher)
 
- * Fix `AFURLConnectionOperation -pause` by adding state checks to prevent 
+ * Fix `AFURLConnectionOperation -pause` by adding state checks to prevent
 likely memory issues when resuming (Mattt Thompson)
- 
- * Fix warning caused by miscast of type when 
+
+ * Fix warning caused by miscast of type when
 `CLANG_WARN_IMPLICIT_SIGN_CONVERSION` is set (Steven Fisher)
 
  * Fix incomplete implementation warning in example code (Steven Fisher)
 
  * Fix warning caused by using `==` comparator on floats (Steven Fisher)
 
- * Fix iOS 4 bug where file URLs return `NSURLResponse` rather than 
+ * Fix iOS 4 bug where file URLs return `NSURLResponse` rather than
 `NSHTTPURLResponse` objects (Leo Lobato)
 
- * Fix calculation of finished operations in batch operation progress 
+ * Fix calculation of finished operations in batch operation progress
 callback (Mattt Thompson)
 
- * Fix documentation typos (Steven Fisher, Matthias Wessendorf, 
+ * Fix documentation typos (Steven Fisher, Matthias Wessendorf,
 jorge@miv.uk.com)
 
- * Fix `hasAcceptableStatusCode` to return true after a network failure (Tony 
+ * Fix `hasAcceptableStatusCode` to return true after a network failure (Tony
 Million)
 
- * Fix warning about missing prototype for private static method (Stephan 
+ * Fix warning about missing prototype for private static method (Stephan
 Diederich)
 
- * Fix issue where `nil` content type resulted in unacceptable content type 
+ * Fix issue where `nil` content type resulted in unacceptable content type
 (Mattt Thompson)
 
  * Fix bug related to setup and scheduling of output stream (Stephen Tramer)
 
- * Fix AFContentTypesFromHTTPHeader to correctly handle comma-delimited 
+ * Fix AFContentTypesFromHTTPHeader to correctly handle comma-delimited
 content types (Peyman, Mattt Thompson, @jsm174)
 
- * Fix crash caused by `_networkReachability` not being set to `NULL` after 
+ * Fix crash caused by `_networkReachability` not being set to `NULL` after
 releasing (Blake Watters)
 
- * Fix Podspec to correctly import required headers and use ARC (Eloy Durán, 
+ * Fix Podspec to correctly import required headers and use ARC (Eloy Durán,
 Blake Watters)
 
- * Fix query string parameter escaping to leave square brackets unescaped 
+ * Fix query string parameter escaping to leave square brackets unescaped
 (Mattt Thompson)
 
  * Fix query string parameter encoding of `NSNull` values (Daniel Rinser)
 
- * Fix error caused by referencing `__IPHONE_OS_VERSION_MIN_REQUIRED` without 
+ * Fix error caused by referencing `__IPHONE_OS_VERSION_MIN_REQUIRED` without
 importing `Availability.h` (Blake Watters)
 
- * Update example to use App.net API, as Twitter shut off its unauthorized 
+ * Update example to use App.net API, as Twitter shut off its unauthorized
 access to the public timeline (Mattt Thompson)
 
- * Update `AFURLConnectionOperation` to replace `NSAutoReleasePool` with 
+ * Update `AFURLConnectionOperation` to replace `NSAutoReleasePool` with
 `@autoreleasepool` (Mattt Thompson)
 
- * Update `AFHTTPClient` operation queue to specify 
-`NSOperationQueueDefaultMaxConcurrentOperationCount` rather than 
+ * Update `AFHTTPClient` operation queue to specify
+`NSOperationQueueDefaultMaxConcurrentOperationCount` rather than
 previously-defined constant (Mattt Thompson)
 
- * Update `AFHTTPClient -initWithBaseURL` to automatically append trailing 
-slash, so as to fix common issue where default path is not respected without 
+ * Update `AFHTTPClient -initWithBaseURL` to automatically append trailing
+slash, so as to fix common issue where default path is not respected without
 trailing slash (Steven Fisher)
- 
- * Update default `AFHTTPClient` `User-Agent` header strings (Mattt Thompson, 
+
+ * Update default `AFHTTPClient` `User-Agent` header strings (Mattt Thompson,
 Steven Fisher)
- 
+
  * Update icons for iOS example application (Mattt Thompson)
 
- * Update `numberOfCompletedOperations` variable in progress block to be 
+ * Update `numberOfCompletedOperations` variable in progress block to be
 renamed to `numberOfFinishedOperations` (Mattt Thompson)
 
 
diff --git a/Example/AFNetworking Mac Example.xcodeproj/project.pbxproj b/Example/AFNetworking Mac Example.xcodeproj/project.pbxproj
index 59617d1..52132e4 100644
--- a/Example/AFNetworking Mac Example.xcodeproj/project.pbxproj	
+++ b/Example/AFNetworking Mac Example.xcodeproj/project.pbxproj	
@@ -21,6 +21,7 @@
 		F82EB080159A172000B10B56 /* AFPropertyListRequestOperation.m in Sources */ = {isa = PBXBuildFile; fileRef = F82EB077159A172000B10B56 /* AFPropertyListRequestOperation.m */; };
 		F82EB081159A172000B10B56 /* AFURLConnectionOperation.m in Sources */ = {isa = PBXBuildFile; fileRef = F82EB079159A172000B10B56 /* AFURLConnectionOperation.m */; };
 		F82EB082159A172000B10B56 /* AFXMLRequestOperation.m in Sources */ = {isa = PBXBuildFile; fileRef = F82EB07B159A172000B10B56 /* AFXMLRequestOperation.m */; };
+		F88812F216C533E9003C8B8C /* Security.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = F88812F116C533E9003C8B8C /* Security.framework */; };
 		F8A847CF161F55A500940F39 /* CoreServices.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = F8A847CE161F55A500940F39 /* CoreServices.framework */; };
 		F8A847D2161F55AC00940F39 /* SystemConfiguration.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = F8A847D1161F55AC00940F39 /* SystemConfiguration.framework */; };
 /* End PBXBuildFile section */
@@ -57,6 +58,7 @@
 		F82EB07A159A172000B10B56 /* AFXMLRequestOperation.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = AFXMLRequestOperation.h; path = ../AFNetworking/AFXMLRequestOperation.h; sourceTree = "<group>"; };
 		F82EB07B159A172000B10B56 /* AFXMLRequestOperation.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = AFXMLRequestOperation.m; path = ../AFNetworking/AFXMLRequestOperation.m; sourceTree = "<group>"; };
 		F877018B159A1CE700B45C0D /* AFNetworking Example.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.xml; path = "AFNetworking Example.entitlements"; sourceTree = "<group>"; };
+		F88812F116C533E9003C8B8C /* Security.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Security.framework; path = System/Library/Frameworks/Security.framework; sourceTree = SDKROOT; };
 		F8A847CE161F55A500940F39 /* CoreServices.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = CoreServices.framework; path = System/Library/Frameworks/CoreServices.framework; sourceTree = SDKROOT; };
 		F8A847D1161F55AC00940F39 /* SystemConfiguration.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = SystemConfiguration.framework; path = System/Library/Frameworks/SystemConfiguration.framework; sourceTree = SDKROOT; };
 /* End PBXFileReference section */
@@ -66,6 +68,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				F88812F216C533E9003C8B8C /* Security.framework in Frameworks */,
 				F8A847D2161F55AC00940F39 /* SystemConfiguration.framework in Frameworks */,
 				F8A847CF161F55A500940F39 /* CoreServices.framework in Frameworks */,
 				F8129C001591061B009BFE23 /* Cocoa.framework in Frameworks */,
@@ -78,6 +81,7 @@
 		F8129BF01591061B009BFE23 = {
 			isa = PBXGroup;
 			children = (
+				F88812F116C533E9003C8B8C /* Security.framework */,
 				F8A847D1161F55AC00940F39 /* SystemConfiguration.framework */,
 				F8A847CE161F55A500940F39 /* CoreServices.framework */,
 				F877018B159A1CE700B45C0D /* AFNetworking Example.entitlements */,
@@ -86,7 +90,10 @@
 				F8129BFE1591061B009BFE23 /* Frameworks */,
 				F8129BFC1591061B009BFE23 /* Products */,
 			);
+			indentWidth = 4;
 			sourceTree = "<group>";
+			tabWidth = 4;
+			usesTabs = 0;
 		};
 		F8129BFC1591061B009BFE23 /* Products */ = {
 			isa = PBXGroup;
@@ -206,7 +213,7 @@
 		F8129BF21591061B009BFE23 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0450;
+				LastUpgradeCheck = 0460;
 			};
 			buildConfigurationList = F8129BF51591061B009BFE23 /* Build configuration list for PBXProject "AFNetworking Mac Example" */;
 			compatibilityVersion = "Xcode 3.2";
@@ -265,6 +272,10 @@
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = NO;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_DYNAMIC_NO_PIC = NO;
@@ -292,6 +303,10 @@
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				GCC_C_LANGUAGE_STANDARD = gnu99;
diff --git a/Example/AFNetworking iOS Example.xcodeproj/project.pbxproj b/Example/AFNetworking iOS Example.xcodeproj/project.pbxproj
index 16afe14..d89b181 100644
--- a/Example/AFNetworking iOS Example.xcodeproj/project.pbxproj	
+++ b/Example/AFNetworking iOS Example.xcodeproj/project.pbxproj	
@@ -9,6 +9,7 @@
 /* Begin PBXBuildFile section */
 		F8129C7415910C37009BFE23 /* AppDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = F8129C7215910C37009BFE23 /* AppDelegate.m */; };
 		F818101615E6A0C600EF93C2 /* MobileCoreServices.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 50ABD6EC159FC2CE001BE42C /* MobileCoreServices.framework */; };
+		F88812F016C533D6003C8B8C /* Security.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = F8E469E013957DF100DB05C8 /* Security.framework */; };
 		F8A847C1161F51A300940F39 /* Default-568h@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = F8A847C0161F51A300940F39 /* Default-568h@2x.png */; };
 		F8A847C3161F523E00940F39 /* Default.png in Resources */ = {isa = PBXBuildFile; fileRef = F8A847C2161F523E00940F39 /* Default.png */; };
 		F8A847C5161F524200940F39 /* Default@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = F8A847C4161F524200940F39 /* Default@2x.png */; };
@@ -95,6 +96,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				F88812F016C533D6003C8B8C /* Security.framework in Frameworks */,
 				F8E469651395739D00DB05C8 /* UIKit.framework in Frameworks */,
 				F8E469671395739D00DB05C8 /* Foundation.framework in Frameworks */,
 				F8E469691395739D00DB05C8 /* CoreGraphics.framework in Frameworks */,
@@ -152,7 +154,10 @@
 				F8E469631395739D00DB05C8 /* Frameworks */,
 				F8E469611395739C00DB05C8 /* Products */,
 			);
+			indentWidth = 4;
 			sourceTree = "<group>";
+			tabWidth = 4;
+			usesTabs = 0;
 		};
 		F8E469611395739C00DB05C8 /* Products */ = {
 			isa = PBXGroup;
diff --git a/Example/Classes/Models/User.h b/Example/Classes/Models/User.h
index 99d973b..20cd5de 100644
--- a/Example/Classes/Models/User.h
+++ b/Example/Classes/Models/User.h
@@ -26,9 +26,9 @@ extern NSString * const kUserProfileImageDidLoadNotification;
 
 @interface User : NSObject
 
-@property (readonly) NSUInteger userID;
-@property (readonly) NSString *username;
-@property (unsafe_unretained, readonly) NSURL *avatarImageURL;
+@property (readonly, nonatomic) NSUInteger userID;
+@property (readonly, nonatomic) NSString *username;
+@property (readonly, nonatomic, unsafe_unretained) NSURL *avatarImageURL;
 
 - (id)initWithAttributes:(NSDictionary *)attributes;
 
diff --git a/Example/Prefix.pch b/Example/Prefix.pch
index 18b984d..df78b3c 100644
--- a/Example/Prefix.pch
+++ b/Example/Prefix.pch
@@ -1,5 +1,7 @@
 #import <Availability.h>
 
+#define _AFNETWORKING_PIN_SSL_CERTIFICATES_
+
 #if __IPHONE_OS_VERSION_MIN_REQUIRED
   #ifndef __IPHONE_3_0
     #warning "This project uses features only available in iPhone SDK 3.0 and later."