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QuestionPlay Two video file in different left right speaker Pin
Shivanand Gupta27-Nov-09 18:54
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QuestionConverting different data types from a class template. Pin
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QuestionOpen-With menu items for given file extension Pin
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QuestionUploading a file using CHttpFile Pin
msn9227-Nov-09 12:17
Membermsn9227-Nov-09 12:17 
Hi
I'm uploading a file using CInternetSession, CHttpConnection and CHttpFile.
The program is working properly. However, I have some questions:


1. Does the program send data each time CHttpFile::Write() called? Or are all data sent when CHttpFile::EndRequest() called?
2. How big should the buffer size be(while reading from local file and writing to CHttpFile)?[Please see the source code below]
3. Does using Keep-alive connection(INTERNET_FLAG_KEEP_CONNECTION) help in any way?[Please see the source code below]

CInternetSession ises = NULL;
CHttpFile* httpf = NULL;
CHttpConnection *connection = NULL;

file=new CFile(L"file2upload.txt",CFile::modeRead);

connection = ises.GetHttpConnection(L"myserver.com");

http = connection->OpenRequest(CHttpConnection::HTTP_VERB_POST, L"upload.php",0,1,0,0,INTERNET_FLAG_KEEP_CONNECTION);

CString hdrs /* = My appropriate headers to send */;
httpf->AddRequestHeaders(hdrs);

PreFileData /* = prefile data */;
PostFileData /* = postfile data */;

httpf->SendRequestEx(DWORD(PreFileData.GetLength()+file->GetLength()+PostFileData.GetLength()), HSR_SYNC | HSR_INITIATE);

httpf->Write((LPSTR)(LPCSTR)PreFileData, PreFileData.GetLength());

UINT len=1024;
char buf[1024]; /*BUFFER SIZE = 1024 HOW BIG ACTUALLY SHOULD IT BE?*/
while(len>0){
	len=f->Read(&buf,1024);
	if(len>0)httpf->Write(&buf,len);
}

httpf->Write((LPSTR)(LPCSTR)PostFileData, PostFileData.GetLength());

httpf->EndRequest(HSR_SYNC);

file->Close();
httpf->Close();
connection->Close();


Thanks in advance
QuestionThread handle from thread ID [solved] Pin
PJ Arends27-Nov-09 10:40
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Questionplease help : how to draw BSpline by using mouse ??? Pin
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QuestionQuestion about double #INF and #NAN Pin
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QuestionRe: Question about double #INF and #NAN Pin
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