Why 10049 error occurs in udp communication even though ip and port are entered correctly - tcp

Question

DWORD WINAPI socketRead(void *lpVoid)
{
while (true)
{
// UDP socket
WSADATA data_s;
WORD version = MAKEWORD(2, 2);
// socket start
int wsok = WSAStartup(version, &data_s);
if (wsok != 0)
{
cout << "Can't start Winsock!" << wsok;
return 0;
}
else
{
cout << "start Winsock!\n";
}
// socket bind
SOCKET in = socket(AF_INET, SOCK_DGRAM, 0);
SOCKADDR_IN serverHint = {};
memset(&serverHint, 0, sizeof(serverHint));
serverHint.sin_family = AF_INET; // IPv4
serverHint.sin_addr.S_un.S_addr = inet_addr("192.168.0.69");
serverHint.sin_port = htons(1480);
if (bind(in, (sockaddr *)&serverHint, sizeof(serverHint)) != SOCKET_ERROR)
{
cout << "bind socket!\n";
}
else
{
cout << "can't bind socket!" << WSAGetLastError() << endl;
// socket clean
int wsokE = WSACleanup();
if (wsokE != 0)
{
cout << "Can't cleanup Winsock!" << wsokE;
}
else
{
cout << "cleanup Winsock!\n";
}
// return 0;
}
}
this is my code. I want to do UDP socket communication using winsocket.
It is trying to do udp communication with another computer.
However, I keep getting error 10049 even though I wrote down the ip address and port number correctly.
The 1480 port I wrote down in the code is what I set arbitrarily. Do I need to do other processing on the computer?
When I use the same ip and port in the incoming and outgoing confirmation program called Ezterm, the values ​​come normally.
In conclusion, we want to receive data from "192.168.0.69".