BinaryRequestSerializer.m

#import "BinaryRequestSerializer.h"

@implementation BinaryRequestSerializer

+ (instancetype)serializer
{
    BinaryRequestSerializer *serializer = [[self alloc] init];
    return serializer;
}

#pragma mark - SM_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) {
        if (![mutableRequest valueForHTTPHeaderField:@"Content-Type"]) {
            [mutableRequest setValue:@"application/octet-stream" forHTTPHeaderField:@"Content-Type"];
        }

        [mutableRequest setHTTPBody: parameters];
    }

    return mutableRequest;
}

#pragma mark - NSSecureCoding

- (instancetype)initWithCoder:(NSCoder *)decoder {
    self = [super initWithCoder:decoder];
    if (!self) {
        return nil;
    }

    return self;
}

@end