Thread: Sockets Question

Here's some code:


#include <iostream.h>
#include <conio.c>
#include <winsock.h>

#define PORT 23

int main()
{
char msg[1000];
SOCKET sck;
int sin_size;
struct sockaddr_in my_addr;
WORD version=MAKEWORD(1, 1);
WSADATA data;
int key;
int connection;
int incoming;
char inMsg[1000];

WSAStartup(version, &data);

sck = socket(AF_INET, SOCK_STREAM, 0);
my_addr.sin_family = AF_INET;
my_addr.sin_port = htons(PORT);
my_addr.sin_addr.s_addr = inet_addr("207.65.112.12");

connection = connect(sck, (struct sockaddr *) &my_addr, sizeof(my_addr));

cout << "Type a message: ";
cin.getline(msg, 1000);

cout << "\n\n";

send(sck, msg, strlen(msg), 0);

getch();

incoming = listen(sck, 2);

cout << inMsg;

cout << "\n\n";

WSACleanup();

getch();
return 0;
}


When I press a key at getch(); it just receives EL32.DLL. What is wrong?

>>
incoming = listen(sck, 2);

cout << inMsg;
<<

Umm...where do you get inMsg from? it has nothing in it!

And also, are you sure that there's a server at the other end of the connection sending you the right data? or any data at all? Sure your client is designed to recieve from it correctly?

just a thought. I haven't done C Winsock in a long while.

Well, I agree with -KEN- in saying that inMsg is not touched by any socket function, and has no reason to have any valid data in it.

Also, you might want to check the flow of the functions--did you mean to use recv() instead of listen() in that particular instance? Setting up a listening socket requires an extra struct and a call to bind(), neither of which appear in your code.

Would I also do:

incoming = bind( ... ) or just do bind by itself? And yes I have recv now.

What do I need for something like a chat. Asynchronous sockets? If so, can I have a link?