Solved

Windows sockets as viewed from a linux programmer, oh my

Posted on 2009-05-08
2
232 Views
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;
}

Open in new window

0
Comment
Question by:ehensens
2 Comments
 
LVL 11

Accepted Solution

by:
climbgunks earned 500 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")
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
How to read network slash info 7 44
Sonicwall one way trust 2 41
Windows 7 Internet issue 14 54
Internet options/Settings 1 46
If you're not part of the solution, you're part of the problem.   Tips on how to secure IoT devices, even the dumbest ones, so they can't be used as part of a DDoS botnet.  Use PRTG Network Monitor as one of the building blocks, to detect unusual…
When it comes to security, there are always trade-offs between security and convenience/ease of administration. This article examines some of the main pros and cons of using key authentication vs password authentication for hosting an SFTP server.
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

860 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question