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Socket programming(TCP) in VB.net without make connections
Hi Guys,
I want to communicate between 2 systems using Socket class in VB.net. Protocol type :TCP . Without making a connection how can i send data to another system? I tried using "SendTo()" method. but it throws error
"A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using a sendto call) no address was supplied" during runtime .
But In the MSDN Document they said,
"Although intended for connectionless protocols, SendTo also works with connection-oriented protocols. If you are using a connection-oriented protocol, you must first establish a remote host connection by calling the Connect method or accept an incoming connection request using the Accept method. If you do not establish or accept a remote host connection, SendTo will throw a SocketException. You can also establish a default remote host for a connectionless protocol prior to calling the SendTo method. In either of these cases, SendTo will ignore the remoteEP parameter and only send data to the connected or default remote host."
please help me
Thanks in advance
I want to communicate between 2 systems using Socket class in VB.net. Protocol type :TCP . Without making a connection how can i send data to another system? I tried using "SendTo()" method. but it throws error
"A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using a sendto call) no address was supplied" during runtime .
But In the MSDN Document they said,
"Although intended for connectionless protocols, SendTo also works with connection-oriented protocols. If you are using a connection-oriented protocol, you must first establish a remote host connection by calling the Connect method or accept an incoming connection request using the Accept method. If you do not establish or accept a remote host connection, SendTo will throw a SocketException. You can also establish a default remote host for a connectionless protocol prior to calling the SendTo method. In either of these cases, SendTo will ignore the remoteEP parameter and only send data to the connected or default remote host."
please help me
Thanks in advance
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cookre
Note that UDP does not guarantee delivery of the packet. If delivery is mandatory, the recipients must have knowledge of session content. This can be implemented by including a 'this is part 17 of 236' indicator in each transmission and providing a call-back port for recipients to request resends.
ASKER
Normally In VB or Java For TCP Socket no need to make any connections before transmission of data but in VB.net that method is not working. We have to make connection for data transmission. How to overcome this problem?
Are you trying to use the Winsock control or are you using classes in the System.Net.Sockets namespace?
ASKER
i'm using System.Net.Sockets Namespace
y u did not wan to make to connection ?
ASKER
coz my client having server, our part is to develop only client side program. they didnt tell any more details, they juz said they r using tcp for connections.
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