Stopping data transfer with QTcpSocket

[sryyy]

hi is it possible to stop the data transfer?

i tried with QTcpSocket::close() and QTcpSocket::abort()

but when i capture the transfer with wireshark the operating system sends the data furthermore

i dont know how to stop it

[lycis]

I am not a specialist on this topic but I would assume that you can not interrupt the ongoing sending of data and that the socket will abort or close as soon as the current operation has finished.

[leon.anavi]

Have you tried using "abort":http://qt-project.org/doc/qt-4.8/qabstractsocket.html#abort ? According to Qt documentation it should fit your needs:

bq. Aborts the current connection and resets the socket. Unlike disconnectFromHost(), this function immediately closes the socket, discarding any pending data in the write buffer.

[sryyy]

yes i used abort but windows sends the data furthermore

[leon.anavi]

[quote author="sryyy" date="1334920309"]yes i used abort but windows sends the data furthermore[/quote]

Hm... could please "check this example app":http://qt-project.org/doc/qt-5.0/network-fortuneclient.html? It uses abort and might be useful to debug your issue.

[sryyy]

this example sends only a little string

in my project i send a 9 mb file

like in the example i use QTcpSocket::abort() but

windows 7 sends the data till its complete transfered :/

[sryyy]

ok i solved this problem with a win api funciton setsockopt() :/

i inherited the QTcpSocket and set an option to the socket

@
#ifdef WIN32
#include <Winsock2.h>
#endif

#include "qmytcpsocket.h"

void QMyTcpSocket::abort()
{
#ifdef WIN32
SOCKET s = this->socketDescriptor();
BOOL bOptVal = FALSE;
int bOptLen = sizeof (BOOL);
setsockopt(s, SOL_SOCKET, SO_DONTLINGER, (char *) &bOptVal, bOptLen);
#endif
TcpSocket::abort();
}

@

is it possible to set the SO_DONTLINGER option with qt?