server.c

#include "socket.h"

int main(int argc, char *argv[]) {
	printf("starting server...\n");
	start_server();
	return 0;
}

int start_server(void) {
	struct sockaddr_in addr;

	printf("opening socket...\n");
	int sockfd = socket(AF_INET, SOCK_DGRAM, 0);

	/* error handling */
	if (sockfd < 0) {
		perror("[server] socket error\n");
		return -1;
	}
	printf("done!\n");

	printf("generating local socket...\n");
	/* zero out all fields in addr */
	memset(&addr, 0, sizeof(addr));
	addr.sin_family = AF_INET;
    addr.sin_addr.s_addr = htonl(INADDR_ANY);
	addr.sin_port = htons(9999);
	//inet_pton(AF_INET, "127.0.0.1", &addr.sin_addr);
	printf("done!\n");

	printf("binding address to socket...\n");
	int bind_val = bind(sockfd, (struct sockaddr *)&addr, sizeof(addr));
	if (bind_val < 0) {
		perror("[server] bind error.\n");
		return -1;
	}
	printf("done!\n");
	
	/* start listening */
	char buffer[BUF_SIZE];
	memset(buffer, 0, sizeof(buffer));
	int val = recv_text(sockfd, &addr, buffer);
	if (val < 0) {
		perror("[server] cant receive text.\n");
		return -1;
	}
	else if (val > 0) {
		printf(buffer);
	}
	return sockfd;
}