C++ winsock TCP listening - c++

Question

I have a software that decodes ADS-B messages (from planes) and sends results in hexadecimal to a port (47806).
I would like to listen to this port to show that data, so I wrote this :
WSADATA WSAData;
WSAStartup(MAKEWORD(2, 0), & WSAData);
SOCKET sock;
SOCKADDR_IN socket_in;
socket_in.sin_addr.s_addr = htonl(INADDR_ANY);
socket_in.sin_family = AF_INET;
socket_in.sin_port = htons(47806);
sock = socket(AF_INET, SOCK_STREAM, 0);
bind(sock, (SOCKADDR*)& socket_in, sizeof(socket_in));
listen(sock, 0);
int valid = 0;
while (TRUE) {
int size_socket_in = sizeof(socket_in);
valid = accept(sock, (SOCKADDR*)& socket_in, & size_socket_in);
if (valid != INVALID_SOCKET) {
std::cout << "OK";
}
}
This code should display "OK" each time a message is received, but it doesn't.
I can read data with a Telnet software, like PuTTY :
PuTTY telnet on port 47806
I don't understand why my code doesn't work.

Answer 1

Here's the right code :
WSADATA WSAData;
WSAStartup(MAKEWORD(2, 0), & WSAData);
SOCKET sock;
SOCKADDR_IN socket_in;
InetPton(AF_INET, "127.0.0.1", & socket_in.sin_addr.s_addr);
socket_in.sin_family = AF_INET;
socket_in.sin_port = htons(47806);
sock = socket(AF_INET, SOCK_STREAM, 0);
connect(sock, (SOCKADDR*)& socket_in, sizeof(socket_in));
int valid = 0;
char buffer[512] = "";
while (TRUE) {
valid = recv(sock, buffer, sizeof(buffer), 0);
if (valid != INVALID_SOCKET) {
std::cout << buffer;
}
}
My program is a client and not a server. So I have to define an IP adress with InetPton, connect to the server with connect and receive the messages with recv.
Thank you #Hasturkun and #RustyX for help and explanations.