[완료] 아 ~~~~ bind() error 이거 왜 이러는지 모르겠네요 ㅡㅡ;;

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
 
void error(char* msg);
 
int main(void) {
	int serv_sock;
	int clnt_sock;
	struct sockaddr_in serv_addr;
	struct sockaddr_in clnt_addr;
	int clnt_addr_size;
	char message[] = "Hello World!\n";
 
	serv_sock = socket(PF_INET, SOCK_STREAM, 0);
	if(serv_sock == -1) error("socket() error");
 
	memset(&serv_addr, 0, sizeof(serv_addr));
	serv_addr.sin_family = AF_INET;
	serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
	serv_addr.sin_port = htons(9191);
 
	if(bind(serv_sock, (struct sockaddr*)&serv_addr, sizeof(serv_addr)) == -1) error("bind() error");
	if(listen(serv_sock, 5) == -1) error("listen() error");
 
	clnt_addr_size = sizeof(clnt_addr);
	clnt_sock = accept(serv_sock, (struct sockaddr*)&clnt_addr, (socklen_t*)&clnt_addr_size);
	if(clnt_sock == -1) error("accept() error");
 
	write(clnt_sock, message, sizeof(message));
	close(clnt_sock);
	return 0;
}
 
void error(char* msg) {
	fprintf(stderr, "%s\n", msg);
	exit(1);
}