Override of requestWithMethod:path:parameters:

MyHTTPClient.m

- (NSMutableURLRequest *)requestWithMethod:(NSString *)method path:(NSString *)path parameters:(NSDictionary *)parameters
{
    NSURL *url = [NSURL URLWithString:path relativeToURL:self.baseURL];
    OAConsumer *consumer = [[OAConsumer alloc] initWithKey:OAUTH_CONSUMER_KEY secret:OAUTH_CONSUMER_SECRET];
    OAHMAC_SHA1SignatureProvider *provider = [[OAHMAC_SHA1SignatureProvider alloc] init];
    OAMutableURLRequest *request = [[OAMutableURLRequest alloc] initWithURL:url consumer:consumer token:self.token realm:@"Bunch API" signatureProvider:provider];
    [request setHTTPMethod:method];
    [request setAllHTTPHeaderFields:self.defaultHeaders];

    if ([method isEqualToString:@"GET"] || [method isEqualToString:@"HEAD"]) {
        [request setHTTPShouldUsePipelining:YES];
    }

    if (parameters) {
        if ([method isEqualToString:@"GET"] || [method isEqualToString:@"HEAD"] || [method isEqualToString:@"DELETE"]) {
         url = [NSURL URLWithString:[[url absoluteString] stringByAppendingFormat:[path rangeOfString:@"?"].location == NSNotFound ? @"?%@" : @"&%@", AFQueryStringFromParametersWithEncoding(parameters, self.stringEncoding)]];
         [request setURL:url];
        } else {
            NSString *charset = (__bridge NSString *)CFStringConvertEncodingToIANACharSetName(CFStringConvertNSStringEncodingToEncoding(self.stringEncoding));
            switch (self.parameterEncoding) {
                case AFFormURLParameterEncoding:;
                    [request setValue:[NSString stringWithFormat:@"application/x-www-form-urlencoded; charset=%@", charset] forHTTPHeaderField:@"Content-Type"];
                    [request setHTTPBody:[AFQueryStringFromParametersWithEncoding(parameters, self.stringEncoding) dataUsingEncoding:self.stringEncoding]];
                    break;
                case AFJSONParameterEncoding:;
                    [request setValue:[NSString stringWithFormat:@"application/json; charset=%@", charset] forHTTPHeaderField:@"Content-Type"];
                    [request setHTTPBody:[AFJSONStringFromParameters(parameters) dataUsingEncoding:self.stringEncoding]];
                    break;
                case AFPropertyListParameterEncoding:;
                    [request setValue:[NSString stringWithFormat:@"application/x-plist; charset=%@", charset] forHTTPHeaderField:@"Content-Type"];
                    [request setHTTPBody:[AFPropertyListStringFromParameters(parameters) dataUsingEncoding:self.stringEncoding]];
                    break;
            }
        }
    }
    [request prepare];

    return request;
}