In our app, we are using threads (not main app thread) to handle the dowloading files in achive file (put on server) as screenshot:
Assuming that the network connection is open, the code snippet for downloading should be:
//Downloader.cpp
result Downloader::RequestFileInZip(int fileIndex/*, int numFileNeedToDownload*/)
{
//The 1st thread
pHttpClient1 = new HttpClient();
pHttpClient1->Construct();
result r = pHttpClient1->SendPartialGetRequest(FileOffsetInZip[fileIndex], FileOffsetInZip[fileIndex] + FileLengthInZip[fileIndex]);
//The 2nd thread
pHttpClient2 = new HttpClient();
pHttpClient2->Construct();
result r = pHttpClient2->SendPartialGetRequest(FileOffsetInZip[fileIndex + 1], FileOffsetInZip[fileIndex + 1] + FileLengthInZip[fileIndex + 1]);
return r;
}
/*..................................................*/
//HttpClient.cpp
result HttpClient::Construct()
{
return Thread::Construct(THREAD_TYPE_EVENT_DRIVEN);
}
result HttpClient::SendPartialGetRequest(int startPosition, int endPosition)
{
this->startPosition = startPosition;
this->endPosition = endPosition;
return Start();
}
void HttpClient::OnStop(void) {}
bool HttpClient::OnStart(void)
{
StartDownloading(this->startPosition, this->endPosition);
return true;
}
result HttpClient::StartDownloading(int startPosition, int endPosition)
{
//Open HTTP Session
//Open HTTP Transaction
//Add HTTP Transaction Listener
//Handle HTTP Request
//Submit HTTP
}
void HttpClient::OnTransactionReadyToRead(Tizen::Net::Http::HttpSession& httpSession, Tizen::Net::Http::HttpTransaction& httpTransaction, int availableBodyLen)
{
//Saving file from HTTP Response
}
Our problem is:
1. The app freezes:
- The 1st thread downloads file 1 in some bytes.
- The 2nd thread WOULD NOT able to construct the http session.
2. If we ONLY use one thread, the 1st for instance, all 2 files will be downloaded successfully.
Our questions are:
- How to fix the above #1 issue?
- We did search muti-thread app in Tizen as well as its sibling - Bada, but there are some samples with one main thread + another thread; Does anyone recommend us other samples pose actual multi-threads?