[英]Enable CORS on Azure Mobile Serivce .NET Backend
I modified a ASP.NET Web API 2 project to make use of Microsoft Azure Mobile Servies. 我修改了一个ASP.NET Web API 2项目以使用Microsoft Azure Mobile Servies。 I'm developing a Phonegap app and testing it using my Desktop Chrome Browser and a locally running Azure Mobile Service.
我正在开发一个Phonegap应用程序并使用我的桌面Chrome浏览器和本地运行的Azure移动服务对其进行测试。
Before I "converted" my project I handled CORS using this lines of code in my startup code (requires NuGet Package Microsoft.AspNet.WebApi.Cors): 在我“转换”我的项目之前,我在我的启动代码中使用这行代码处理CORS(需要NuGet包Microsoft.AspNet.WebApi.Cors):
#if DEBUG
var cors = new EnableCorsAttribute("*", "*", "*");
config.EnableCors(cors);
#if DEBUG
config.MapHttpAttributeRoutes();
...
This worked like a charm, the required headers for Chrome have been written to the response without a problem. 这就像一个魅力,Chrome的必需标题已写入响应没有问题。
Now using Azure Mobile Serives, the code looks like this: 现在使用Azure Mobile Serives,代码如下所示:
public static void Register()
{
ConfigOptions options = new ConfigOptions();
HttpConfiguration config = ServiceConfig.Initialize(new ConfigBuilder(options));
#if DEBUG
var cors = new EnableCorsAttribute("*", "*", "*");
config.EnableCors(cors);
#endif
}
Now my CORS setup does not work anymore, there are no headers present. 现在我的CORS设置不再起作用,没有标题存在。 Adding the header in web.config works, but I would prefer programmatic approach.
在web.config中添加标题有效,但我更喜欢编程方法。
<system.webServer>
<httpProtocol>
<customHeaders>
<add name="Access-Control-Allow-Origin" value="*" />
</customHeaders>
</httpProtocol>
...
Any ideas? 有任何想法吗?
The issue is that CORS uses a special hook in the ASP.NET Web API HttpConfiguration that .NET backend fires a bit too early and so it is not initialized. 问题是CORS在ASP.NET Web API HttpConfiguration中使用了一个特殊的钩子,.NET后端过早触发,因此没有初始化。
We'll fix this, but here is a workaround: 我们会解决这个问题,但这是一个解决方法:
You can find some sample code here: https://gist.github.com/HenrikFrystykNielsen/6c934be6c6c8fa9e4bc8 你可以在这里找到一些示例代码: https : //gist.github.com/HenrikFrystykNielsen/6c934be6c6c8fa9e4bc8
Hope this helps, 希望这可以帮助,
Henrik 亨里克
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