C++, Ifstream opens local file but not file on HTTP Server

Posted by fammi on Stack Overflow See other posts from Stack Overflow or by fammi
Published on 2011-01-12T11:31:10Z Indexed on 2011/01/16 8:53 UTC
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Hi,

I am using ifstream to open a file and then read from it. My program works fine when i give location of the local file on my system. for eg /root/Desktop/abc.xxx works fine

But once the location is on the http server the file fails to open. for eg http://192.168.0.10/abc.xxx fails to open.

Is there any alternate for ifstream when using a URL address?

thanks.

part of the code where having problem:

bool readTillEof = (endIndex == -1) ? true : false;

            // Open the file in binary mode and seek to the end to determine file size
            ifstream file ( fileName.c_str ( ), ios::in|ios::ate|ios::binary );

            if ( file.is_open ( ) )
            {
                long size = (long) file.tellg ( );
                long numBytesRead;
                if ( readTillEof )
                {
                    numBytesRead = size - startIndex;
                }
                else
                {
                    numBytesRead = endIndex - startIndex + 1;
                }

                // Allocate a new buffer ptr to read in the file data
                BufferSptr buf (new Buffer ( numBytesRead ) );
                mpStreamingClientEngine->SetResponseBuffer ( nextRequest,
                                                             buf );

                // Seek to the start index of the byte range
                // and read the data
                file.seekg ( startIndex, ios::beg );
                file.read ( (char *)buf->GetData(), numBytesRead );

                // Pass on the data to the SCE
                // and signal completion of request
                mpStreamingClientEngine->HandleDataReceived( nextRequest,
                                                             numBytesRead);
                mpStreamingClientEngine->MarkRequestCompleted( nextRequest );

                // Close the file
                file.close ( );

            }
            else
            {
                // Report error to the Streaming Client Engine
                // as unable to open file
                AHS_ERROR ( ConnectionManager,
                            " Error while opening file \"%s\"\n",
                            fileName.c_str ( ) );
                mpStreamingClientEngine->HandleRequestFailed( nextRequest,
                                                              CONNECTION_FAILED );
            }
        }

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