diff --git a/AFNetworking/AFHTTPClient.h b/AFNetworking/AFHTTPClient.h
index e875395..398bb10 100644
--- a/AFNetworking/AFHTTPClient.h
+++ b/AFNetworking/AFHTTPClient.h
@@ -597,6 +597,7 @@ extern NSTimeInterval const kAFUploadStream3GSuggestedDelay;
 - (void)appendPartWithFormData:(NSData *)data
                           name:(NSString *)name;
 
+
 /**
  Appends HTTP headers, followed by the encoded data and the multipart form boundary.
 
@@ -606,6 +607,21 @@ extern NSTimeInterval const kAFUploadStream3GSuggestedDelay;
 - (void)appendPartWithHeaders:(NSDictionary *)headers
                          body:(NSData *)body;
 
+/**
+ 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;
+
 /**
  Throttles request bandwidth by limiting the packet size and adding a delay for each chunk read from the upload stream.
 
diff --git a/AFNetworking/AFHTTPClient.m b/AFNetworking/AFHTTPClient.m
index 0dd6874..fafe0d9 100644
--- a/AFNetworking/AFHTTPClient.m
+++ b/AFNetworking/AFHTTPClient.m
@@ -916,6 +916,31 @@ NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
     [self.bodyStream appendHTTPBodyPart:bodyPart];
 }
 
+- (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)throttleBandwidthWithPacketSize:(NSUInteger)numberOfBytes
                                   delay:(NSTimeInterval)delay
 {
@@ -1174,6 +1199,8 @@ 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;
         }
     }