Add support for sending 'raw' requests on iOS too

src/ios/BinaryRequestSerializer.m

@@ -0,0 +1,49 @@
+#import "BinaryRequestSerializer.h"
+
+@implementation BinaryRequestSerializer
+
++ (instancetype)serializer
+{
+    BinaryRequestSerializer *serializer = [[self alloc] init];
+    return serializer;
+}
+
+#pragma mark - AFURLRequestSerialization
+
+- (NSURLRequest *)requestBySerializingRequest:(NSURLRequest *)request
+                               withParameters:(id)parameters
+                                        error:(NSError *__autoreleasing *)error
+{
+    NSParameterAssert(request);
+
+    if ([self.HTTPMethodsEncodingParametersInURI containsObject:[[request HTTPMethod] uppercaseString]]) {
+        return [super requestBySerializingRequest:request withParameters:parameters error:error];
+    }
+
+    NSMutableURLRequest *mutableRequest = [request mutableCopy];
+
+    [self.HTTPRequestHeaders enumerateKeysAndObjectsUsingBlock:^(id field, id value, BOOL * __unused stop) {
+        if (![request valueForHTTPHeaderField:field]) {
+            [mutableRequest setValue:value forHTTPHeaderField:field];
+        }
+    }];
+
+    if (parameters) {
+        [mutableRequest setHTTPBody: parameters];
+    }
+
+    return mutableRequest;
+}
+
+#pragma mark - NSSecureCoding
+
+- (instancetype)initWithCoder:(NSCoder *)decoder {
+    self = [super initWithCoder:decoder];
+    if (!self) {
+        return nil;
+    }
+
+    return self;
+}
+
+@end