UDP Broadcast problem

[Mark van Heeswijk]

Hi all,

currently i'm working on a client-server application...
when doing an UDP-broadcast the packet is received ok, at the other side,
but for some reason after that
_ANOTHER_ packet is received that has source-address 255.255.255.255, which
i didn't send.

This packet generates an error when received :( :
error 10054 - connection reset by peer

below is what i use to receive, and the piece of code to set the options:
----------------------------------------------------------------------------
--------------------------------------------
recvfrom( GlobalSocket, tempBuff, sizeof(tempBuff), (int)NULL, (SOCKADDR
*)&remote_sockaddr_in,(int *) )
----------------------------------------------------------------------------
--------------------------------------------
&remote_sockaddr_length);
//ENABLE BROADCAST
BOOL fBroadcast = TRUE;
int err = setsockopt ( GlobalSocket,
SOL_SOCKET,
SO_BROADCAST,
(CHAR *) &fBroadcast,
sizeof ( BOOL )
);
----------------------------------------------------------------------------
--------------------------------------------
Is anybody familiar with this? What could be causing this?

Thanks in advance,
Mark

[Peter van Merkerk]

> currently i'm working on a client-server application...

when doing an UDP-broadcast the packet is received ok, at the other side, but for some reason after that
_ANOTHER_ packet is received that has source-address 255.255.255.255, which i didn't send.

This packet generates an error when received :( :
error 10054 - connection reset by peer

below is what i use to receive, and the piece of code to set the options: ---------------------------------------------------------------------- ------ --------------------------------------------
recvfrom( GlobalSocket, tempBuff, sizeof(tempBuff), (int)NULL, (SOCKADDR *)&remote_sockaddr_in,(int *) )
---------------------------------------------------------------------- ------ --------------------------------------------
&remote_sockaddr_length);
file://ENABLE BROADCAST
BOOL fBroadcast = TRUE;
int err = setsockopt ( GlobalSocket,
SOL_SOCKET,
SO_BROADCAST,
(CHAR *) &fBroadcast,
sizeof ( BOOL )
);
---------------------------------------------------------------------- ------ --------------------------------------------
Is anybody familiar with this? What could be causing this?

Standard C++ has no support for socket communication, hence your
question is off-topic here. For suggestions were to post read this
http://home.wanadoo.nl/efx/c++-faq/h...t.html#faq-5.9 and this
http://www.slack.net/~shiva/welcome.txt

--
Peter van Merkerk
peter.van.merkerk(at)dse.nl

[Mark van Heeswijk]

Oops, sorry...

Anyway...problem is solved now....seems that the packets where too long :s

"Peter van Merkerk" <me*****@deadspam.com> wrote in message
news:bi************@ID-133164.news.uni-berlin.de...

currently i'm working on a client-server application...
when doing an UDP-broadcast the packet is received ok, at the other

side,

but for some reason after that
_ANOTHER_ packet is received that has source-address 255.255.255.255,

which

i didn't send.

This packet generates an error when received :( :
error 10054 - connection reset by peer

below is what i use to receive, and the piece of code to set the

options:

----------------------------------------------------------------------

------

--------------------------------------------
recvfrom( GlobalSocket, tempBuff, sizeof(tempBuff), (int)NULL,

(SOCKADDR

*)&remote_sockaddr_in,(int *) )
----------------------------------------------------------------------

------

--------------------------------------------
&remote_sockaddr_length);
file://ENABLE BROADCAST
BOOL fBroadcast = TRUE;
int err = setsockopt ( GlobalSocket,
SOL_SOCKET,
SO_BROADCAST,
(CHAR *) &fBroadcast,
sizeof ( BOOL )
);
----------------------------------------------------------------------

------

--------------------------------------------
Is anybody familiar with this? What could be causing this?

Standard C++ has no support for socket communication, hence your
question is off-topic here. For suggestions were to post read this
http://home.wanadoo.nl/efx/c++-faq/h...t.html#faq-5.9 and this
http://www.slack.net/~shiva/welcome.txt

--
Peter van Merkerk
peter.van.merkerk(at)dse.nl