Overview

This document provides an overview of APIs and SDK code samples related to CORS preflight requests.

SDK API References

For parameters and method description of all APIs in the SDK, please see SDK API Reference.

Configuring a Preflight Request for Cross-origin Access

Description

This API is used to get the cross-origin access configuration for a preflight request.

Sample code

Objective-C

QCloudOptionsObjectRequest* request = [[QCloudOptionsObjectRequest alloc] init];
// Bucket name in the format: `BucketName-APPID`
request.bucket =@"examplebucket-1250000000";
// Set the origin domain, request method, and host for the CORS pre-flight request.
request.origin = @"http://cloud.tencent.com";
request.accessControlRequestMethod = @"GET";
request.accessControlRequestHeaders = @"host";
// Object key, i.e. the full path of a COS object. If the object is in a directory, the path should be "video/xxx/movie.mp4"
request.object = @"exampleobject";
[request setFinishBlock:^(id outputObject, NSError* error) {
   // outputObject contains information such as the ETag or custom headers in the response.
   NSDictionary* info = (NSDictionary *) outputObject;

}];
[[QCloudCOSXMLService defaultCOSXML] OptionsObject:request];

Note：

For the complete sample, go to GitHub.

Swift

let optionsObject = QCloudOptionsObjectRequest.init();
// Object key, i.e. the full path of a COS object. If the object is in a directory, the path should be "video/xxx/movie.mp4"
optionsObject.object = "exampleobject";
// Set the origin domain, request method, and headers for the CORS pre-flight request.
optionsObject.origin = "http://www.qcloud.com";
optionsObject.accessControlRequestMethod = "GET";
optionsObject.accessControlRequestHeaders = "origin";
// Bucket name in the format of BucketName-Appid, which can be viewed in the COS console at https://console.cloud.tencent.com/cos5/bucket
optionsObject.bucket = "examplebucket-1250000000";
optionsObject.finishBlock = {(result,error) in
   if let result = result {
       // You can get the header information returned by the server from `result`
   }
}
QCloudCOSXMLService.defaultCOSXML().optionsObject(optionsObject);

Note：

For the complete sample, go to GitHub.