A Question About Winsock

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I've just recently started playing around with winsock. I have however ran into a bit of a snag. How would one using the code below keep the client running while it accepts multiple transmissions from the server. I've tried to fix this myself however I am uncertain on how to do so.

C++

int client(string ip)
{
	// Initialise Winsock
	WSADATA WsaDat;
	WSAStartup(MAKEWORD(2,2),&WsaDat);
	
	SOCKET Socket=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
	struct hostent *host;

	// Socket stuff
	SOCKADDR_IN SockAddr;
	SockAddr.sin_port=htons(8888);
	SockAddr.sin_family=AF_INET;
	SockAddr.sin_addr.s_addr= inet_addr(ip.c_str());

	if(connect(Socket,(SOCKADDR*)(&SockAddr),sizeof(SockAddr))!=0)
	{
		std::cout<<"Failed to establish connection with server\r\n";
		WSACleanup();
		system("PAUSE");
		return 0;
	}

	// Display message from server
	char *data = new char[1001];
	memset(data,0,1000);

	int inDataLength=recv(Socket,data,1000,0);
	cout << data << endl;

	shutdown(Socket,SD_SEND);
	closesocket(Socket);
	WSACleanup();
	system("PAUSE");
	return 0;
}

Posted 15-Dec-15 21:15pm

Member 10657083

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CPallini · Answer 1 · 2015-12-15T21:45:00

Solution 1

Multithreading: usually blocking I/O calls are handled in separate threads.

Posted 15-Dec-15 21:45pm

CPallini

Richard MacCutchan · Answer 2 · 2015-12-15T21:57:00

Solution 2

Create a loop that continues to sit on a recv call. Terminate the loop only when you receive a quit call from the server. However, your code is not very logical. The usual sequence would be:

connect
LOOP:
    send a message to the server
    receive a response
    if not "quit" THEN GOTO LOOP

close socket
terminate

Posted 15-Dec-15 21:57pm

Richard MacCutchan

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Member 10657083 16-Dec-15 5:28am

Ok but how would that look in with this snipet. How would you keep the client in this situation running and ready to receive data from the server.

int inDataLength=recv(Socket,data,1000,0);
cout << data << endl;

Richard MacCutchan 16-Dec-15 5:47am

It would look just the same, the recv call is the second statement inside the loop pseudo code above.

Member 10657083 16-Dec-15 9:14am

The Answer was right in front of me thank you.

Full code for future reference should someone need it.
http://pastebin.com/r7Up00A3

Richard MacCutchan 16-Dec-15 9:15am

Yes, amazing what you can find with a little Googling.

A Question About Winsock

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A Question About Winsock

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