Objective c Cocoa：使用NSURLConnection访问Django站点中受保护的资源时，POST标头/参数丢失

我正在尝试使用NSURLConnection、OAuth2承载令牌和HTTPS访问Django站点上受保护的资源。我收到一个令牌，然后将其附加到GET参数、POST参数或头上。我可以访问响应GET参数的URL:s。但当我尝试使用POST访问URL时，服务器返回403，并显示一条自定义错误消息，表示没有包含令牌的header/POST参数。我尝试了几种解决方案和HTTP库。方法使用AFN网络，我试过了。由于苹果公司不喜欢修改“authorization”标题的警告，我们甚至将授权更改为接受另一个标题。我当前的代码如下：（scheme=@“https”）

_Delegate handleData解析响应，而定制响应总是缺少承载令牌所需的header或post参数。

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看起来，即使我在每次重定向时用原始请求的可变副本替换请求，头/参数仍然会被NSURLConnection剥离。但是为什么，如何，因为我每次都发送一份原始请求的副本，并且我通过记录来验证它们是否存在

您是否尝试过使用http请求程序手动生成您的请求并查看它是否有效？试着看看你是否能得到一个有效的答复。我不是百分之百的确定你是否能够成功地做到这一点，因为你的承载令牌，但这只是一个建议，可能有助于消除一些可能性更新：我设法通过摸索代码（注释掉的部分）使POST参数通过，编码改为UTF8。但我还是不断失去头球。虽然我现在可以继续了，但我仍然想知道为什么NSURLConnection一直在筛选标题。如果我发现了什么，我会尝试你的方法并报告结果。很好，是的，让我知道：）

    -(void) logOut {

    NSString *pget = @"/api/logout/";
    NSString *path = [pget stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

    NSString *absolutePath = [NSString stringWithFormat:@"%@://%@%@", scheme, host, path];

    NSURL *url = [NSURL URLWithString:absolutePath];
    NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:30.0];
    NSString *authValue = [NSString stringWithFormat:@"Bearer %@", accessToken];
    [urlRequest setValue:authValue forHTTPHeaderField:@"Authorization_Extra"];
    [urlRequest setValue:@"application/x-www-form-urlencoded; charset=utf-8" forHTTPHeaderField:@"content-type"];
    [urlRequest setHTTPMethod: @"POST"];
    /*
     NSString *post = [NSString stringWithFormat:@"access_token_extra=%@", accessToken];
     NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding];
     NSString *postLength = [NSString stringWithFormat:@"%lu", (unsigned long)[postData length]];
     [urlRequest setValue:postLength forHTTPHeaderField:@"Content-Length"];
     [urlRequest setHTTPBody:postData];
     */
    NSDictionary* headers = [urlRequest allHTTPHeaderFields];
    NSLog(@"headers: %@",headers);
    _originalRequest = urlRequest;
    NSURLConnection* connection = [[NSURLConnection alloc] initWithRequest:urlRequest delegate:self startImmediately:NO];
    [connection start];
}

#pragma mark NSURLConnection Delegate Methods

- (NSURLRequest *)connection: (NSURLConnection *)connection
             willSendRequest: (NSURLRequest *)request
            redirectResponse: (NSURLResponse *)redirectResponse;
{
    if (redirectResponse) {
        // we don't use the new request built for us, except for the URL
        NSURL *newURL = [request URL];
        NSMutableURLRequest *newRequest = [_originalRequest mutableCopy];
        [newRequest setURL: newURL];

        NSLog(@"New Request headers: %@", [newRequest allHTTPHeaderFields]);
        return newRequest;
    } else {
        return request;
    }
}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSHTTPURLResponse *)response {
    NSLog(@"Received response statuscode: %ld", (long)[response statusCode]);
    responseData = [[NSMutableData alloc] init];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
    [responseData appendData:data];
}

- (NSCachedURLResponse *)connection:(NSURLConnection *)connection
                  willCacheResponse:(NSCachedURLResponse*)cachedResponse {
    return nil;
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
    NSLog(@"connection finished:");
    [_delegate handleData:responseData];
}