Overview

This document provides an overview of APIs and SDK sample codes related to preflight requests for cross-origin access.

SDK API Reference

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

Configuring a Preflight Request for Cross-origin Access

Feature 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";

// Specify the domain the request that simuplates CORS comes from, request method and host
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 "dir1/object1"
request.object = @"exampleobject";

[request setFinishBlock:^(id outputObject, NSError* error) {
    // outputObject returns information such as the Etag or custom headers
    NSDictionary* info = (NSDictionary *) outputObject;

}];

[[QCloudCOSXMLService defaultCOSXML] OptionsObject:request];

Note：

For more samples, please visit 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 "dir1/object1"
optionsObject.object = "exampleobject";

// Specify the domain the request that simuplates CORS comes from, request method and header
optionsObject.origin = "http://www.qcloud.com";
optionsObject.accessControlRequestMethod = "GET";
optionsObject.accessControlRequestHeaders = "origin";

// Bucket name in the format: `BucketName-APPID`
optionsObject.bucket = "examplebucket-1250000000";

optionsObject.finishBlock = {(result,error) in

  if let result = result {
       // “result" contains headers returned by the server
    }
}
QCloudCOSXMLService.defaultCOSXML().optionsObject(optionsObject);

Note：

For more samples, please visit GitHub.