C# webclient azure-functions azure-functions-core-tools

Webclient s downloadstring（url）从Azure函数运行时返回403，但在与Azure-Functions-Core-Tools的本地调试中正常工作

发布于 2025-02-07 18:38:02 字数 892 浏览 1 评论 0原文

我无法弄清楚为什么我的代码在本地上运行良好，而不是在Azure功能上运行。

段

        using (var client = new WebClient ())
        {
            log.LogInformation($"Fetching html from {url}");
            
            try
            {
               var response = client.DownloadString(url);
                baseHtmlBasePageList.Add(response);
            }
            catch(Exception ex)
            {
                log.LogError(ex.Message);
            }
        }

这是我要点击的url代码是 https://www.redfin.com/zipcode /20171 。我试图确定问题可能在哪里..

Redfin是否能够区分来自Azure与我本地机器的请求并做出不同的反应？
我需要明确设置Azure上的某些设置吗？

代码/功能本身非常简单。它的功能像上面提到的示例一样获取URL，通过调用Downloadstring（URL）方法来获取HTML，并从返回的字符串中返回前20个字符。

我确实知道，网络客户已弃用，但是我们可以肯定地说，这就是为什么我本地机器和Azure之间行为不一致的原因？

原文

I am not able to figure out why my code runs fine on my local but doesn't on azure functions.

This is the code snippet

        using (var client = new WebClient ())
        {
            log.LogInformation(quot;Fetching html from {url}");
            
            try
            {
               var response = client.DownloadString(url);
                baseHtmlBasePageList.Add(response);
            }
            catch(Exception ex)
            {
                log.LogError(ex.Message);
            }
        }

The URL I am trying to hit is https://www.redfin.com/zipcode/20171.
I am trying to determine where the issue could be.. like

Is Redfin able to differentiate between a request coming from Azure vs my local machine and respond differently?
Is it some setting on Azure that I need to set explicitly?

The code/function itself is very simple. Its a function that takes url like the example mentioned above, fetches the html by calling the DownloadString(url) method and returns the first 20 chars from the returned string.

I do understand that WebClient is deprecated but can we say for certain that that is why the behavior is not consistent between my local machine and Azure?

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