upd tests

udp_test

#include "stdafx.h"
#include <winsock2.h>

int _tmain(int argc, _TCHAR* argv[])
{
    WSADATA wsaData = { 0 };
    char ip[64];
    char message[256];
    char readMessage[256];
    int port = 12121;
    SOCKET sock;
    bool received = false;
    fd_set socketSelect;
    sockaddr_in sockAddr;
    sockaddr_in remoteAddr;
    int addrlen = sizeof(remoteAddr);

    memset(message, 0, sizeof(message));
    memset(readMessage, 0, sizeof(readMessage));
    memset(&remoteAddr, 0, sizeof(remoteAddr));
    memset((char *)&sockAddr, 0, sizeof(sockAddr));

    WSAStartup(MAKEWORD(2, 2), &wsaData);

    printf("Enter IP to connect to: ");
    scanf_s("%s", ip, sizeof(ip));

    printf("Enter a message to send: ");
    fflush(stdin);
    fgets(message, sizeof(message), stdin);

    sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);

    if (sock == INVALID_SOCKET) {
        printf("Could not create socket.");

        return 0;
    }

    sockAddr.sin_family = AF_INET;
    sockAddr.sin_addr.s_addr = htonl(INADDR_ANY);
    sockAddr.sin_port = htons(12121);

    if (bind(sock, (struct sockaddr *)&sockAddr, sizeof(sockAddr)) < 0) {
        printf("Could not bind socket to the port.\n");
        scanf_s("%s", message, sizeof(message));

        return 0;
    }

    remoteAddr.sin_port = htons(12121);
    remoteAddr.sin_addr.s_addr = inet_addr(ip);
    remoteAddr.sin_family = AF_INET;

    printf("Waiting...\n");

    socketSelect.fd_array[0] = sock;
    socketSelect.fd_count = 1;

    while (true) {
        sendto(sock, message, sizeof(message), 0, (struct sockaddr *)&remoteAddr, addrlen);

        if (recvfrom(sock, readMessage, sizeof(readMessage), 0, (struct sockaddr *)&remoteAddr, &addrlen)) {
            if (received == false) {
                received = true;
                printf("Message received: %s\n", readMessage);
            }
        }
    }

	return 0;
}