[CMIS-771] deleteTree via compressed (gzipped) JSON fails with: Unexpected token END OF FILE at position 0.

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: OpenCMIS 0.10.0
• Fix Version/s: OpenCMIS 0.11.0
• Component/s: opencmis-client
• Labels: patch

Environment

(Apache) Web server configured to compress (gzip) responses for (Android) clients

• Assignee: Florian Müller
• Reporter: Achim Derigs
• Created: 25/Mar/14 22:19
• Updated: 27/Mar/14 08:51
• Resolved: 27/Mar/14 08:51

Description

Since HTTP's Content-Length header returns the compressed size, it is an error to use getContentLength() to size buffers for the uncompressed data. Instead, read bytes from the response until InputStream.read() returns -1. See: http://android-developers.blogspot.de/2011/09/androids-http-clients.html

If the Web Server decides to compress the response of the deleteTree request you will get a Content-Length of 20 for a compressed (gzipped) empty body. This makes no sense but is valid.

org.apache.chemistry.opencmis.commons.exceptions.CmisConnectionException: Parsing exception!
at org.apache.chemistry.opencmis.client.bindings.spi.browser.AbstractBrowserBindingService.parse(AbstractBrowserBindingService.java:325)
at org.apache.chemistry.opencmis.client.bindings.spi.browser.AbstractBrowserBindingService.parseObject(AbstractBrowserBindingService.java:289)
at org.apache.chemistry.opencmis.client.bindings.spi.browser.ObjectServiceImpl.deleteTree(ObjectServiceImpl.java:506)
at org.alfresco.mobile.android.api.services.impl.AbstractDocumentFolderServiceImpl.delete(AbstractDocumentFolderServiceImpl.java:684)
at org.alfresco.mobile.android.api.services.impl.AbstractDocumentFolderServiceImpl.deleteNode(AbstractDocumentFolderServiceImpl.java:646)
... 2 more
Caused by: Unexpected token END OF FILE at position 0.
at org.apache.chemistry.opencmis.commons.impl.json.parser.JSONParser.parse(JSONParser.java:273)
at org.apache.chemistry.opencmis.client.bindings.spi.browser.AbstractBrowserBindingService.parse(AbstractBrowserBindingService.java:323)
... 6 more