objective-c - 从 NSHTTPURLResponse 获取多个 Set-Cookie header

Question

我正在尝试访问在 http 响应中发送的 Set-Cookie header :

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse*)response;
    NSDictionary *headers = [httpResponse allHeaderFields];
    NSLog([headers description]);
}

HTTP 服务器发送两个 Set-Cookie header ，如下所示:

Set-Cookie: foo=1; httponly; Path=/
Set-Cookie: bar=2; httponly; Path=/

但是，[HTTPResponse allHeaderFields]接口(interface)将多个 Set-Cookie header 组合成一个逗号分隔的字符串:

"Set-Cookie" = "foo=1; httponly; Path=/, bar=2; httponly; Path=/"

This cocoa-dev mailing list message证实了我的观察。

是否有一个接口(interface)可以单独获取每个 Set-Cookie header 或访问原始 header ？

Answer 1

iOS 和 macOS 定义了一个 NSHTTPCookie 类，它可以解析并为您提供所需的信息:

NSArray<NSHTTPCookie *> *cookies = [NSHTTPCookie cookiesWithResponseHeaderFields: [httpResponse allHeaderFields] forURL: [httpResponse url]];

有关详细信息，请参阅 documentation对于NSHTTPCookie。