[Walrus] Incorrect response for ranged GET

[Gilles Gaillard]

1. As per RFC-2616 14.35.1 when a byte range is submitted in a GET the "last-byte-pos value gives the byte-offset of the last byte in the range". Eucalyptus instead returns one byte less than expected. It seems to me that the issue is in FileSystemStorageManager#sendObject when initializing the ChunkedDataFile (or the compressed one).

2. Still as per the same reference, the server SHOULD return a response with a status of 206 (Partial Content) instead of 200 (OK).

[Gilles Gaillard (gillouxgaillard)]

Also per the same RFC, specifying an incomplete range like:
  Range: bytes=567889-
should be accepted.

Currently it returns a 500 'Internal error' which is reflected in logs by:
14:59:12 [WalrusRESTBinding:New I/O server worker #1-4] ERROR java.lang.ArrayIndexOutOfBoundsException: 1
java.lang.ArrayIndexOutOfBoundsException: 1
 at com.eucalyptus.ws.handlers.WalrusRESTBinding.parseExtendedHeaders(WalrusRESTBinding.java:730)
 at com.eucalyptus.ws.handlers.WalrusRESTBinding.getOperation(WalrusRESTBinding.java:580)
 at com.eucalyptus.ws.handlers.WalrusRESTBinding.bind(WalrusRESTBinding.java:285)
 at com.eucalyptus.ws.handlers.WalrusRESTBinding.incomingMessage(WalrusRESTBinding.java:180)
 at com.eucalyptus.ws.handlers.WalrusRESTBinding.handleUpstream(WalrusRESTBinding.java:158)

[Neil Soman (neilsoman)]

Thanks for your report! Fixed in revno 1259. Please reopen if this doesn't fix your problem. Thanks.

[Andy Grimm (agrimm)]

This issue is now being tracked upstream at http://eucalyptus.atlassian.net/browse/EUCA-2754

Please watch that issue for further updates.