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서버 실행환경
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학과 서버 사용
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OS
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SunOS 5.10
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GCC
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3.4.6
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Java
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1.5.0_16
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클라이언트 실행환경 |
Desktop | 조립식 |
CPU | Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz 3.40GHz |
Memory | 8.00 GB |
OS | Windows 7 Professional K 64bit
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Java | 1.8.0_05 |
MySQL | Ver 14.14 Distrib 5.6.19, for Win64 |
Web Server | Apache Tomcat 7.0.51 |
서버 프로그램
#include <stdio.h>
#include <sys/types.h> // socket, bind, accept, open
#include <sys/socket.h> // socket, bind, listen, accept
#include <unistd.h> // read, write
#include <sys/stat.h> // open
#include <fcntl.h> // open
#include <errno.h>
#include <string.h>
#define PORT 5500
#define MAXBUF 1024
int main() {
int server_sockfd;
int client_sockfd;
int des_fd; // file num
struct sockaddr_in serveraddr, clientaddr;
int client_len, read_len, file_read_len; // length
char buf[MAXBUF];
int check_bind;
client_len = sizeof(clientaddr);
/* socket() */
server_sockfd = socket(AF_INET, SOCK_STREAM, 0);
if(server_sockfd == -1) {
perror("socket error : ");
exit(0);
}
/* bind() */
bzero(&serveraddr, sizeof(serveraddr));
serveraddr.sin_family = AF_INET;
serveraddr.sin_addr.s_addr = htonl(INADDR_ANY);
serveraddr.sin_port = htons(PORT);
if(bind(server_sockfd, (struct sockaddr *)&serveraddr, sizeof(serveraddr)) > 0) {
perror("bind error : ");
exit(0);
}
/* listen */
if(listen(server_sockfd, 5) != 0) {
perror("listen error : ");
}
while(1) {
char file_name[MAXBUF]; // local val
memset(buf, 0x00, MAXBUF);
/* accept() */
client_sockfd = accept(server_sockfd, (struct sockaddr *)&clientaddr, &client_len);
printf("New Client Connect : %s\n", inet_ntoa(clientaddr.sin_addr));
/* file name */
read_len = read(client_sockfd, buf, MAXBUF);
if(read_len > 0) {
strcpy(file_name, buf);
printf("%s > %s\n", inet_ntoa(clientaddr.sin_addr), file_name);
} else {
close(client_sockfd);
break;
}
/* create file */
FILE_OPEN:
des_fd = open(file_name, O_WRONLY | O_CREAT | O_EXCL, 0700);
if(!des_fd) {
perror("file open error : ");
break;
}
if(errno == EEXIST) {
close(des_fd);
size_t len = strlen(file_name);
file_name[len++] = '_';
file_name[len++] = 'n';
file_name[len] = '\0';
goto FILE_OPEN;
}
/* file save */
while(1) {
memset(buf, 0x00, MAXBUF);
file_read_len = read(client_sockfd, buf, MAXBUF);
write(des_fd, buf, file_read_len);
if(file_read_len == EOF | file_read_len == 0) {
printf("finish file\n");
break;
}
}
close(client_sockfd);
close(des_fd);
}
close(server_sockfd);
return 0;
}
클라이언트 프로그램
#include <WinSock2.h>
#include <stdio.h>
#include <sys/types.h>
#include <io.h>
#include <sys/stat.h>
#include <fcntl.h>
#define PORT 5500
#define IP "127.0.0.1"
#define MAXBUF 1024
int main() {
WSADATA WSAData;
SOCKADDR_IN addr;
SOCKET s;
int sourse_fd;
char buf[MAXBUF];
int file_name_len, read_len;
if(WSAStartup(MAKEWORD(2,2), &WSAData) != 0) {
return 1;
}
/* socket() */
s = socket(AF_INET, SOCK_STREAM, 0);
if(s == INVALID_SOCKET) {
return 1;
}
addr.sin_family = AF_INET;
addr.sin_addr.S_un.S_addr = inet_addr(IP);
addr.sin_port = htons(PORT);
if(connect(s, (struct sockaddr *)&addr, sizeof(addr)) == SOCKET_ERROR) {
perror("connect : ");
printf("fail to connect.\n");
closesocket(s);
return 1;
}
memset(buf, 0x00, MAXBUF);
printf("전송할 파일명 : ");
scanf("%s", buf);
printf(" > %s\n", buf);
file_name_len = strlen(buf);
send(s, buf, file_name_len, 0);
sourse_fd = _open(buf, _O_RDONLY);
if(!sourse_fd) {
perror("Error : ");
return 1;
}
while(1) {
memset(buf, 0x00, MAXBUF);
read_len = _read(sourse_fd, buf, MAXBUF);
send(s, buf, read_len, 0);
if(read_len == 0) {
break;
}
}
return 0;
}
