C# asynchronous webrequest system.reactive

Rx：将多个 IObservable Web 请求拼凑在一起

发布于 2024-08-27 18:18:48 字数 842 浏览 7 评论 0原文

我正在使用 IObservables 和反应式扩展创建多个异步 Web 请求。

因此，这为“GET”Web 请求创建了可观察的：

            var tweetObservalue =
            from request in WebRequestExtensions.CreateWebRequest(outUrl + querystring, method)
            from response in request.GetResponseAsync()
            let responseStream = response.GetResponseStream()
            let reader = new StreamReader(responseStream)
            select reader.ReadToEnd();

我可以

tweetObservable.Subscribe(response => dosomethingwithresponse(response));

执行使用 IObservables 和 LINQ 执行多个异步 Web 请求（必须等待其他请求完成）的正确方法是什么？

例如，首先我想验证用户信息：创建 userInfoObservable，然后如果用户信息正确，我想更新统计信息，以便获得 updateStatusObservable，然后如果状态更新，我想创建 FriendshipObservable 等等。

另外还有一个额外的问题，有一种情况我想同时执行网络调用，当所有调用完成后执行另一个可观察的，直到其他调用完成为止。

谢谢。

原文

I'm creating multiple asynchronous web requests using IObservables and reactive extensions.

So this creates observable for "GET" web request:

            var tweetObservalue =
            from request in WebRequestExtensions.CreateWebRequest(outUrl + querystring, method)
            from response in request.GetResponseAsync()
            let responseStream = response.GetResponseStream()
            let reader = new StreamReader(responseStream)
            select reader.ReadToEnd();

And I can do

tweetObservable.Subscribe(response => dosomethingwithresponse(response));

What is the correct way of executing multiple asynchronous web requests with IObservables and LINQ that have to wait until other requests have been finished?

For example first I would like to verify user info: create userInfoObservable, then if user info is correct I want to update stats so I get updateStatusObservable then if status is updated I would like create friendshipObservable and so on.

Also bonus question, there is a case where I would like to execute web calls simultaneously and when all are finished execute another observable which will until other calls are finished.

Thank you.

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