解析WwwAuthenticate挑战字符串(Parse WwwAuthenticate challenge string)

 我正在使用.NET Core 2.0为客户端提供RESTful服务。 远程服务返回这样的挑战： 
 
WwwAuthenticate: Bearer realm="https://somesite/auth",service="some site",scope="some scope"
 
 哪些需要变成令牌请求，如： 
 
GET https://somesite/auth?service=some%20site&scope=some%20scope
 
 使用AuthenticationHeaderValue解析头文件以获取方案和参数很容易，但这只是让我的realm="https://somesite/auth",service="some site",scope="some scope"字符串。 我如何轻松可靠地将其解析为单个realm ， service和scope组件？ 这不是JSON，所以用NewtonSoft JsonConvert反序列化它将不起作用。 我可以将它转换成XML或JSON格式，但这看起来非常难以置信（更不用说不可靠）。 
 
 当然有更好的方法？ 

I am working on a client for a RESTful service, using .NET Core 2.0. The remote service returns challenges like this:
 
WwwAuthenticate: Bearer realm="https://somesite/auth",service="some site",scope="some scope"
 
Which need to get turned into token requests like:
 
GET https://somesite/auth?service=some%20site&scope=some%20scope
 
Parsing the header to get a scheme and parameter is easy with AuthenticationHeaderValue, but that just gets me the realm="https://somesite/auth",service="some site",scope="some scope" string. How can I easily and reliably parse this to the individual realm, service, and scope components? It's not quite JSON, so deserializing it with NewtonSoft JsonConvert won't work. I could regex it into something that looks like XML or JSON, but that seems incredibly hacky (not to mention unreliable). 
 
Surely there's a better way?

原文：https://stackoverflow.com/questions/49417057