NewLC - Sending file problem - Comments

Re: Sending file problem

Kerdany — Mon, 25 Jul 2005 13:41:40 +0200

thanks msa2

Problem solved .... ur a life saver

if u 've any comments on code please let me know ......

Re: Sending file problem

msa2 — Wed, 20 Jul 2005 22:58:51 +0200

You are doing things rather complex way, so it's hard to follow and there can be many errors. However, the most obvious potential bug is your SendNextPacket

Code:

/Start Send operation
TPtrC8 arr =iDataToSend->Mid( iStartIndex , sendLength ) ;

iSocket.Send(arr,KSIWriteOnly,iStatus,iLength);

Your "arr" can be destroyed (be out of scope), before the socket server has accessed it. You need to move it into member variable. Also, I have no clue what KSIWriteOnly is supposed to do with TCP.

This is common error. People don't realize that the 'arr' is passed as a pointer to the descriptor which in local stack (in C syntax, the equivalent would be. Send(&arr, KSIWriteOnly, &iStatus, &iLength)).

Oh, and...

Code:

iBytesSent += sendLength ;
iStartIndex = iBytesSent - 1;

...should most likely be

Code:

iBytesSent += sendLength ;
iStartIndex = iBytesSent;

Re: Sending file problem

Kerdany — Wed, 20 Jul 2005 20:19:00 +0200

thanks yucca for your reply ....

but i didn't really get your idea ..... data is sent in a binary form so where the problem can be raised ....

Re: Sending file problem

pai — Wed, 20 Jul 2005 17:17:11 +0200

same question!!

Re: Sending file problem

yucca — Wed, 20 Jul 2005 15:17:38 +0200

maybe the data has line ending or some other character that messes up the communication. To get rid of the problematic characters, you could try encoding the data using base64 for example.

yucca

Sending file problem

Kerdany — Wed, 20 Jul 2005 14:45:04 +0200