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hbe02 · May 25th, 2006, 4:15 PM

alright what i want to do is listen to a socket for something to be recieved from the client side. in that time, i want to keep couting "there"
and when i recieve something, it trigerrs a network event.
this is what my main looks like:
com->sd returns the socket descriptor integer.

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char*buffer = new char[50];

WSANETWORKEVENTS NetworkEvents;
HANDLE NetworkEvent;
::WSAEventSelect(com->sd, NetworkEvent,  FD_ACCEPT );

if ((WSAWaitForMultipleEvents(1, &NetworkEvent, FALSE,WSA_INFINITE, FALSE))== WSA_WAIT_FAILED)
		cout<<"error1"<<endl;
if (WSAEnumNetworkEvents(com->sd ,NetworkEvent, &NetworkEvents) == SOCKET_ERROR)
         cout<<"error2"<<endl;
while(true)
 {
     if (NetworkEvents.lNetworkEvents & FD_ACCEPT)
      {
           if (NetworkEvents.lNetworkEvents & FD_ACCEPT &&  NetworkEvents.iErrorCode [FD_ACCEPT_BIT] == 0)
           {
				 cout<<"here";
				 break;      	
           }
           else
           {
                  cout<<"\rthere";
				  com->Recieve(host,buffer);
           }
    }
}

and this is the com->Recieve(host,buffer) function

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bool Mysocket::Recieve(sockaddr_in & client, char * & buffer)
{
	int clen = sizeof (sockaddr_in);
	cout<<"Listening on Socket "<<sd<<"...."<<endl;
		listen(sd,1);   //listen to created socket for connection (1 connection max)
	
		if(accept(sd,0,0) != -1) //accept connection on socket
		{
			return false;	
		}
		else
		{
			char* temp = new char[25000];
		
			int size = 	recvfrom(sd,temp,strlen(temp),0,(struct sockaddr *) &client,&clen);	//get recieved input and put in temp
			
			for (int i = 0 ; i <size ; i++)
			{
				buffer[i] = temp[i];
			}
			buffer[i] = NULL;
			
			
			delete temp;
			return true;
		
		}
		
}

this is the first time i use WSAevents, i cant seem to find a good resource to learn more, i have a feeling the structure is all wrong and all over the place.

Appreciate the help guys.

hbe02 · May 25th, 2006, 4:23 PM

This is what i was trying to do before i dove into WSAnetwork events

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	while(true)
	{
             if(com->Recieve(host,buffer))
		{
		           //read buffer and do something	
		}
		else
			cout<<"\rthere";
      }

so i practically want to keep printing "there" until forever . but when i recieve a buffer over the socket form the client. then i read it and do some other operation.

nnxion · May 25th, 2006, 4:29 PM

I don't know the answer to your question, I have not worked with Wsanetworkevents yet. But why are you trying to print out \r ?

hbe02 · May 25th, 2006, 4:35 PM

i have a lot of code to be executed instead of cout.. i just couted to make my question breif and straight to the point.
to answer you anyways.. if i used

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cout<<"there"<<endl;

This is what i will get:

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there
there
there
there
there
there
there
there
.. and forever

but if i use \r before "there" it will just overwrite it instead of priniting after it. so you will only have one ouputed line instead of a kazillion .
i usually use that when im debugging in an infinite loop as such. or to make a counter that keeps incrementing and views on one line only.

The Dark · May 25th, 2006, 7:32 PM

I haven't use the WSA Network Events before, but a quick google showed a few examples. It looks like you need to create the handle with WSACreateEvent before you can call WSAEventSelect.
Then you need to move your WSAWaitForMultipleEvents and WSAEnumNetworkEvents calls to inside the loop, as at the moment your loop isn't waiting for any more data before looping around.
This page has a good description of what to do.

May 25th, 2006, 4:15 PM	#1
hbe02 Hobbyist Programmer Join Date: Mar 2006 Location: Lebanon Posts: 148 Rep Power: 3	Wsanetworkevents alright what i want to do is listen to a socket for something to be recieved from the client side. in that time, i want to keep couting "there" and when i recieve something, it trigerrs a network event. this is what my main looks like: com->sd returns the socket descriptor integer. (Toggle Plain Text) charbuffer = new char[50]; WSANETWORKEVENTS NetworkEvents; HANDLE NetworkEvent; ::WSAEventSelect(com->sd, NetworkEvent, FD_ACCEPT ); if ((WSAWaitForMultipleEvents(1, &NetworkEvent, FALSE,WSA_INFINITE, FALSE))== WSA_WAIT_FAILED) cout<<"error1"<<endl; if (WSAEnumNetworkEvents(com->sd ,NetworkEvent, &NetworkEvents) == SOCKET_ERROR) cout<<"error2"<<endl; while(true) { if (NetworkEvents.lNetworkEvents & FD_ACCEPT) { if (NetworkEvents.lNetworkEvents & FD_ACCEPT && NetworkEvents.iErrorCode [FD_ACCEPT_BIT] == 0) { cout<<"here"; break; } else { cout<<"\rthere"; com->Recieve(host,buffer); } } } charbuffer = new char[50]; WSANETWORKEVENTS NetworkEvents; HANDLE NetworkEvent; ::WSAEventSelect(com->sd, NetworkEvent, FD_ACCEPT ); if ((WSAWaitForMultipleEvents(1, &NetworkEvent, FALSE,WSA_INFINITE, FALSE))== WSA_WAIT_FAILED) cout<<"error1"<<endl; if (WSAEnumNetworkEvents(com->sd ,NetworkEvent, &NetworkEvents) == SOCKET_ERROR) cout<<"error2"<<endl; while(true) { if (NetworkEvents.lNetworkEvents & FD_ACCEPT) { if (NetworkEvents.lNetworkEvents & FD_ACCEPT && NetworkEvents.iErrorCode [FD_ACCEPT_BIT] == 0) { cout<<"here"; break; } else { cout<<"\rthere"; com->Recieve(host,buffer); } } } and this is the com->Recieve(host,buffer) function (Toggle Plain Text) bool Mysocket::Recieve(sockaddr_in & client, char * & buffer) { int clen = sizeof (sockaddr_in); cout<<"Listening on Socket "<<sd<<"...."<<endl; listen(sd,1); //listen to created socket for connection (1 connection max) if(accept(sd,0,0) != -1) //accept connection on socket { return false; } else { char* temp = new char[25000]; int size = recvfrom(sd,temp,strlen(temp),0,(struct sockaddr ) &client,&clen); //get recieved input and put in temp for (int i = 0 ; i <size ; i++) { buffer[i] = temp[i]; } buffer[i] = NULL; delete temp; return true; } } bool Mysocket::Recieve(sockaddr_in & client, char & buffer) { int clen = sizeof (sockaddr_in); cout<<"Listening on Socket "<<sd<<"...."<<endl; listen(sd,1); //listen to created socket for connection (1 connection max) if(accept(sd,0,0) != -1) //accept connection on socket { return false; } else { char* temp = new char[25000]; int size = recvfrom(sd,temp,strlen(temp),0,(struct sockaddr *) &client,&clen); //get recieved input and put in temp for (int i = 0 ; i <size ; i++) { buffer[i] = temp[i]; } buffer[i] = NULL; delete temp; return true; } } this is the first time i use WSAevents, i cant seem to find a good resource to learn more, i have a feeling the structure is all wrong and all over the place. Appreciate the help guys.

May 25th, 2006, 4:23 PM	#2
hbe02 Hobbyist Programmer Join Date: Mar 2006 Location: Lebanon Posts: 148 Rep Power: 3	This is what i was trying to do before i dove into WSAnetwork events (Toggle Plain Text) while(true) { if(com->Recieve(host,buffer)) { //read buffer and do something } else cout<<"\rthere"; } while(true) { if(com->Recieve(host,buffer)) { //read buffer and do something } else cout<<"\rthere"; } so i practically want to keep printing "there" until forever . but when i recieve a buffer over the socket form the client. then i read it and do some other operation.

May 25th, 2006, 4:29 PM	#3
nnxion Programming Guru Join Date: Jun 2005 Location: elemental plane Posts: 1,429 Rep Power: 5	I don't know the answer to your question, I have not worked with Wsanetworkevents yet. But why are you trying to print out \r ? __________________ "Employ your time in improving yourself by other men's writings, so that you shall gain easily what others have labored hard for." -- Socrates

May 25th, 2006, 4:35 PM	#4
hbe02 Hobbyist Programmer Join Date: Mar 2006 Location: Lebanon Posts: 148 Rep Power: 3	i have a lot of code to be executed instead of cout.. i just couted to make my question breif and straight to the point. to answer you anyways.. if i used (Toggle Plain Text) cout<<"there"<<endl; cout<<"there"<<endl; This is what i will get: (Toggle Plain Text) there there there there there there there there .. and forever there there there there there there there there .. and forever but if i use \r before "there" it will just overwrite it instead of priniting after it. so you will only have one ouputed line instead of a kazillion . i usually use that when im debugging in an infinite loop as such. or to make a counter that keeps incrementing and views on one line only.

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May 25th, 2006, 7:32 PM	#5
The Dark Expert Programmer Join Date: Jun 2005 Posts: 824 Rep Power: 4	I haven't use the WSA Network Events before, but a quick google showed a few examples. It looks like you need to create the handle with WSACreateEvent before you can call WSAEventSelect. Then you need to move your WSAWaitForMultipleEvents and WSAEnumNetworkEvents calls to inside the loop, as at the moment your loop isn't waiting for any more data before looping around. This page has a good description of what to do.

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