• Object Storage Service

obs
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  2. Object Storage Service
  3. Developer Guide (Node.js SDK)
  4. Object Download
  5. Rewriting Response Headers

Rewriting Response Headers

When downloading an object, you can rewrite some HTTP/HTTPS response headers. The following table lists rewritable response headers.

Parameter

Description

ResponseContentType

Rewrites Content-Type in HTTP/HTTPS responses.

ResponseContentLanguage

Rewrites Content-Language in HTTP/HTTPS responses.

ResponseExpires

Rewrites Expires in HTTP/HTTPS responses.

ResponseCacheControl

Rewrites Cache-Control in HTTP/HTTPS responses.

ResponseContentDisposition

Rewrites Content-Disposition in HTTP/HTTPS responses.

ResponseContentEncoding

Rewrites Content-Encoding in HTTP/HTTPS responses.

Sample code:
// Import the OBS library.
var ObsClient = require('./lib/obs');

// Create an instance of ObsClient.
var obsClient = new ObsClient({
    access_key_id: '*** Provide your Access Key ***',       
    secret_access_key: '*** Provide your Secret Key ***',       
    server : 'yourdomainname'
});

obsClient.getObject({
       Bucket : 'bucketname',
       Key : 'objectkey',
       ResponseContentType : 'image/jpeg'
}, (err, result) => {
       if(err){
              console.error('Error-->' + err);
       }else{
              console.log('Status-->' + result.CommonMsg.Status);
              if(result.CommonMsg.Status < 300 && result.InterfaceResult){
                  // Obtain the rewritten response headers.
                  console.log(result.InterfaceResult.ContentType);
              }
       }
});