1대1 채팅 프로그램 만들기!!

목차

1. 문제정의

2. 문제분석

3. Design

4. 결과화면

5. 결론 및 소감

6. Source

7. PPT 예제

본문내용

ad(0,send_p.msg, MAXLINE))>0){
send(client_fd, &send_p, sizeof(struct packet), 0);
fprintf(fp,"[%d]send : ", send_p.seq);
fprintf(fp,"%s",send_p.msg);
fclose(fp);
}
else
break;
}
else
break;
}
printf("\nExit program\n");
close (client_fd);
close (server_fd);
return 0;
}
void handler(int sig){
FILE* fp = fopen("client.txt","a+");
char *signame = strsignal(sig);
fprintf(fp, "End Signal : %s\n",signame);
fclose(fp);
printf("Exit program !");
putchar('\n');
exit(0);
}
void sigctrld(){
FILE* fp = fopen("client.txt","a+");
fprintf(fp, "End Signal : CTRL + D\n");
fclose(fp);
printf("Exit program !");
putchar('\n');
exit(0);
}
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define svaddr "220.67.124.162" // 접속할 서버의 주소
#define portnum 11110
#define MAXLINE 1024
void handler(int sig);
void sigctrld();
struct packet{
int seq;
char msg[MAXLINE];
};
int main()
{
char buf[MAXLINE];
char recv_ack[MAXLINE];
int server_fd, len, n;
struct packet recv_p,send_p;
struct sockaddr_in server_addr;
/* 소켓을 생성한다 */
if((server_fd = socket(PF_INET, SOCK_STREAM, 0)) < 0)
{
perror("socket failed\n");
exit(1);
}
/* 접속할 서버의 주소를 설정한다 */
memset(&server_addr, 0, sizeof(struct sockaddr));
server_addr.sin_family = PF_INET;
server_addr.sin_addr.s_addr = inet_addr(svaddr);
server_addr.sin_port = htons(portnum);
/* 서버에 연결한다 */
if(connect(server_fd, (struct sockaddr *) &server_addr, sizeof(server_addr)) <0)
{
perror("connect failed\n");
exit(1);
}
printf("access OK!!\n");
recv(server_fd, &buf, sizeof(buf), 0);
len = strlen(buf);
buf[len] = 0;
printf("%s\n", buf);
while(1)
{
FILE *fp;
fp = fopen("client.txt", "a+");
/* 인터럽트신호와 QUIT 신호 발생시 handler 로 처리하겠다 */
if(signal(SIGINT, handler) == SIG_ERR){
fprintf(stderr, "cannot set handler for SIGINT\n");
exit(1);
}
if(signal(SIGQUIT, handler)== SIG_ERR){
fprintf(stderr, "cannot set handler for SIGINT\n");
exit(1);
}
/* 서버로 메시지를 전송한다 */
bzero(&send_p.msg, MAXLINE);
send_p.seq = send_p.seq + 1;
write(1,"send : ", 7);
if((n = read(0, send_p.msg, MAXLINE))>0 ){
send(server_fd, &send_p, sizeof(struct packet), 0);
fprintf(fp,"[%d]send : ", send_p.seq);
fprintf(fp,"%s",send_p.msg);
/* 서버로부터 메시지를 수신 받는다 */
bzero(&recv_p.msg, MAXLINE);
if((n = recv(server_fd, &recv_p, sizeof(struct packet),0))>0){
write(1,"receive : ", 10);
write(1, recv_p.msg, MAXLINE);
fprintf(fp,"[%d]receive : ", recv_p.seq);
fprintf(fp,"%s",recv_p.msg);
fclose(fp);
}
else
sigctrld();
}
else
sigctrld();
}
printf("\nExit program\n");
close(server_fd);
return 0;
}
void handler(int sig){
FILE* fp = fopen("client.txt","a+");
char *signame = strsignal(sig);
fprintf(fp, "End Signal : %s\n",signame);
fclose(fp);
printf("Exit program !");
putchar('\n');
exit(0);
}
void sigctrld(){
FILE* fp = fopen("client.txt","a+");
fprintf(fp, "End Signal : CTRL + D\n");
fclose(fp);
printf("Exit program !");
putchar('\n');
exit(0);
}
client.c
Server.c
Client.c

키워드

유닉스,   Server,   Client