/**
* Receive a ContentObject message that comes back from the tutorial_Server in response to an Interest we sent.
* This message will be a chunk of the requested content, and should be received in ordered sequence.
* Depending on the CCNxName in the content object, we hand it off to either _receiveFileChunk() or
* _receiveDirectoryListingChunk() to process.
*
* @param [in] contentObject A CCNxContentObject containing a response to an CCNxInterest we sent.
* @param [in] domainPrefix A CCNxName containing the domain prefix of the content we requested.
*
* @return The number of chunks of the content left to transfer.
*/
static uint64_t
_receiveContentObject(CCNxContentObject *contentObject, const CCNxName *domainPrefix)
{
CCNxName *contentName = ccnxContentObject_GetName(contentObject);
uint64_t chunkNumber = tutorialCommon_GetChunkNumberFromName(contentName);
// Get the number of the final chunk, as specified by the sender.
uint64_t finalChunkNumberSpecifiedByServer = ccnxContentObject_GetFinalChunkNumber(contentObject);
// Get the type of the incoming message. Was it a response to a fetch' or a 'list' command?
char *command = tutorialCommon_CreateCommandStringFromName(contentName, domainPrefix);
// Process the payload.
PARCBuffer *payload = ccnxContentObject_GetPayload(contentObject);
if (strncasecmp(command, tutorialCommon_CommandList, strlen(command)) == 0) {
// This is a chunk of the directory listing.
_receiveDirectoryListingChunk(payload, chunkNumber, finalChunkNumberSpecifiedByServer);
} else if (strncasecmp(command, tutorialCommon_CommandFetch, strlen(command)) == 0) {
// This is a chunk of a file.
char *fileName = tutorialCommon_CreateFileNameFromName(contentName);
_receiveFileChunk(fileName, payload, chunkNumber, finalChunkNumberSpecifiedByServer);
parcMemory_Deallocate((void **) &fileName);
} else {
printf("tutorial_Client: Unknown command: %s\n", command);
}
parcMemory_Deallocate((void **) &command);
return (finalChunkNumberSpecifiedByServer - chunkNumber); // number of chunks left to transfer
}
LONGBOW_TEST_CASE(Global, ccnxContentObject_GetSetFinalChunkNumber)
{
CCNxName *name = ccnxName_CreateFromCString("lci:/foo/bar");
PARCBuffer *payload = parcBuffer_Allocate(100);
CCNxContentObject *contentObject = ccnxContentObject_CreateWithDataPayload(name, payload);
ccnxContentObject_SetFinalChunkNumber(contentObject, 100);
ccnxContentObject_AssertValid(contentObject);
assertTrue(ccnxContentObject_GetFinalChunkNumber(contentObject) == 100, "Expected final chunk number to be 100");
ccnxContentObject_SetFinalChunkNumber(contentObject, 20010);
ccnxContentObject_AssertValid(contentObject);
assertTrue(ccnxContentObject_GetFinalChunkNumber(contentObject) == 20010, "Expected final chunk number to be 20010");
ccnxName_Release(&name);
parcBuffer_Release(&payload);
ccnxContentObject_Release(&contentObject);
}
