![]() To allow all origins, use the wildcard "*" value. Origins: Specifies a list of allowed domains for the Access-Control-Allow-Origin header. The cors attribute enables the CORS filter. ![]() The flow of the request will look similar to the following: The cors attribute ![]() This means you will not need to implement any logic in your upstreams to handle these CORS OPTIONS requests. When the CORS attribute is set at either the Mapping or Module level, Ambassador Edge Stack will intercept the pre-flight OPTIONS request and respond with the appropriate CORS headers. read Cross-Origin Resource Sharing (CORS)Ĭross-Origin resource sharing lets users request resources (e.g., images, fonts, videos) from domains outside the original domain.ĬORS configuration can be set for all Ambassador Edge Stack mappings in the ambassador Module, or set per Mapping.If so, this is still an issue that needs to be solved on the backend by configuring your server to reply with the proper headers. Manually inspect the failing request and see if the response is missing the header. The easiest way to check is to look at the browser's dev tools and open the network tab. So my feeling is that you did the right thing by configuring your server to append the missing header, but it's possible that something went wrong with this process. The question is whether the server is responding with the correct headers. In terms of the header, setting it in the browser shouldn't make a difference. edit - disregard this, looks like the third argument specifies whether the request should be async or not. In the sample you posted, the status will never be 200. It's been a while since I've manually sent an XMLHttpRequest but I think you need to set the onload property to a function that will be called when the response is received. I would recommend using esri/request for HTTP requests if that's possible. send ( ) //console.log(http.status) if (http. open ( 'HEAD', reportPath, false ) //tRequestHeader('Access-Control-Allow-Headers', '*') ![]() Var http = new XMLHttpRequest ( ) var contentResult = "" This checks to see if the report has already been generated, and if so, returns it to the popup. I think the section that's causing all the errors is below. I wrote everything in ArcGIS-JS-API, yes. I tried adding the URL of our webserver and it didn't help.ģ. Yes, they are on the same Windows Server 2012 machine.Ģ. I'm pulling my hair out trying figure this out.ġ. Origin 'null' is therefore not allowed access." I've also tried removing these lines from the webconfig and adding " Access-Control-Allow-Origin, * " under HTTP response headers in our IIS web server manager and I get this error "The 'Access-Control-Allow-Origin' header contains multiple values 'null, *', but only one is allowed. I tried adding this to my JavaScript code and it worked in once instance, but not another.Į.corsEnabledServers.push("") I've tried adding this to our webconfig file, and it doesn't help. I get the CORS error when the server tries to return the report PDF to the popup in the map window. I have a geoprocessing tool on the ArcGIS server that generates a report from a map click. I've been dealing with this issue for a while.
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