problem with winsock tutorials

[flamewavetech]

this is code i downloaded of the internet and tried:

#include <winsock.h> // winsock.h always needs to be included
#include <stdio.h>


int main(int argc, char** argv) {
WORD version = MAKEWORD(1,1);
WSADATA wsaData;
int nRet;


//
// First, we start up Winsock
//
WSAStartup(version, &wsaData);


//
// Next, create the socket itself
//
SOCKET listeningSocket;

listeningSocket = socket(AF_INET, // Go over TCP/IP
SOCK_STREAM, // Socket type
IPPROTO_TCP); // Protocol
if (listeningSocket == INVALID_SOCKET) {
printf("Error at socket()");
return 0;
}


//
// Use SOCKADDR_IN to fill in address information
//
SOCKADDR_IN saServer;

saServer.sin_family = AF_INET;
saServer.sin_addr.s_addr = INADDR_ANY; // Since this is a server, any address will do
saServer.sin_port = htons(8888); // Convert int 8888 to a value for the port field


//
// Bind the socket to our local server address
//
nRet = bind(listeningSocket, (LPSOCKADDR)&saServer, sizeof(struct sockaddr));
if (nRet == SOCKET_ERROR) {
printf("Error at bind()");
return 0;
}


//
// Make the socket listen
//
nRet = listen(listeningSocket, 10); // 10 is the number of clients that can be queued
if (nRet == SOCKET_ERROR) {
printf("Error at listen()");
return 0;
}


//
// Wait for a client
//
SOCKET theClient;

theClient = accept(listeningSocket,
NULL, // Wait for a specific address to connect; here there is none
NULL);
if (theClient == INVALID_SOCKET) {
printf("Error at accept()");
return 0;
}


// Send/receive from the client, and finally:

closesocket(theClient);
closesocket(listeningSocket);


//
// Shutdown Winsock
//
WSACleanup();
}


but i get all these errors when i try it.

--------------------Configuration: system - Win32 Debug--------------------
Compiling...
source.cpp
C:\Program Files\Microsoft Visual Studio\MyProjects\system\source.cpp(85) : warning C4715: 'main' : not all control paths return a value
Linking...
source.obj : error LNK2001: unresolved external symbol _WSACleanup@0
source.obj : error LNK2001: unresolved external symbol _closesocket@4
source.obj : error LNK2001: unresolved external symbol _accept@12
source.obj : error LNK2001: unresolved external symbol _listen@8
source.obj : error LNK2001: unresolved external symbol _bind@12
source.obj : error LNK2001: unresolved external symbol _htons@4
source.obj : error LNK2001: unresolved external symbol _socket@12
source.obj : error LNK2001: unresolved external symbol _WSAStartup@8
Debug/system.exe : fatal error LNK1120: 8 unresolved externals
Error executing link.exe.

system.exe - 9 error(s), 1 warning(s)

[abdul]

You need to include the winsock library file in project. I think it is called "WSOCK32.lib" or "WS2_32.lib".

[abdul]

You need to include the winsock library file in your project. I think it is called "WSOCK32.lib" or "WS2_32.lib".

[flamewavetech]

how do i do that i went to the add components thing under the project menu but it isnt showing any .lib files.

[abdul]

GO to Project->Settings, and then in the linker option, type in the name "WSOCK32.lib" yourself.


See the attached image for details.

[flamewavetech]

THANK. thats COOL!

[flamewavetech]

ok now that i can listen and connect on ports how can i send and recieve data?

[abdul]

Originally posted by flamewavetech
ok now that i can listen and connect on ports how can i send and recieve data?

You need a tutorial to learn how to send and recieve data,etc.
The best tutorial I have ever found on the Net about Winsock programming in C++ is here:
http://www.inf.pucrs.br/~derose/file...ktutorial.html

It has a section that describes how to send and recieve data using two different types on winsock connections.