#include <cstdio>

int main()
{
    printf("hello from PROJ1!\n");
    return 0;
}

#define MESSAGES_PORT 8101

struct sockaddr_in RxDataAddr;
int messagesSocket;

int messagesSocketCreation(void)
{
	int status;
	int dontblock;

	/* Build socket address */
	bzero((char *)& RxDataAddr, sizeof(RxDataAddr));
	RxDataAddr.sin_len = sizeof(RxDataAddr);
	RxDataAddr.sin_family = AF_INET;
	RxDataAddr.sin_addr.s_addr = INADDR_ANY;
	/* UDP port number to match for the received packets */
	RxDataAddr.sin_port = htons(MESSAGES_PORT);

	/* Create socket */
	if ((messagesSocket = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
	{
		printf(" cannot open messages recv socket\n");
		return (NULL);
	}
	else
	{
		printf("RX socket created %d \n", messagesSocket);
	}

	/* Bind socket to local address */
	if (bind(messagesSocket, (struct sockaddr *) &RxDataAddr, sizeof(RxDataAddr)) != 0)
	{
		//perror("messages bind error\n");
		printf("RX socket bind error\n");
		status = ERROR;
	}
	else
	{
		printf("RX socket binded \n");
	}

	// make the rcvFrom non block 
	dontblock = 1;
	status = ioctl(messagesSocket, FIONBIO, (char*)dontblock);
	if (status == ERROR)
	{
		printf("messages IOCTL ERROR ");
		printf("messages IOCTL errno = %d\n", errnoGet());
	}

	return 0;
}