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Windows sockets as viewed from a linux programmer, oh my

Posted on 2009-05-08
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Last Modified: 2012-05-06
Hi all,

So I'm a novice network programmer by any means, but still all the network programming I've ever done has been in Linux / Cocoa. So, I'm curious as to why I can't even create a socket in my new windows application. I'm sure there's something dreadfully and obviously wrong with it. Can someone tell me what it is? I am being told:

Error      5      error LNK2001: unresolved external symbol _socket@12      responder.obj      Responder

Error      6      fatal error LNK1120: 1 unresolved externals


Thanks a bunch!
#include <stdio.h>
#include <winsock.h>
#include <stdlib.h>
#include <string.h>
#include <conio.h>
 
 
int main()
{
	int MAXRECVSTRING = 255;
 
	int sock;
	struct sockaddr_in broadcastAddr;
	unsigned int broadcastPort;
	int recvStringLen;
 
	broadcastPort = 8004;
 
	sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
	if (sock < 0)
	{
		printf("\nsocket() failed");
		getch();
		exit(0);
	}
 
	// Still much more to come...
 
	return 0;
}

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Question by:ehensens
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Todd Mummert earned 2000 total points
ID: 24340890

the "unresolved external symbol" error means it's a linking error, not necessarily that there's anything wrong w/ your code.

In windows, you have to link against the winsock library, ws2_32.    Btw, you'll need to call the Windows Socket initializer, WSAStartup, before using the winsock API.

see http://msdn.microsoft.com/en-us/library/ms740506(VS.85).aspx for more info
0
 

Author Closing Comment

by:ehensens
ID: 31579663
I found the easiest way was just to

#pragma comment(lib, "ws2_32.lib")
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