IPv6변환을 위해 연습 했던 소스
1.1 IPv4 클라이언트 소스
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#define BUFSIZE 1024
void error_handling(char *);
void
error_handling(char *message)
{
fputs(message, stderr);
fputc('\n', stderr);
exit(1);
}
int main (int argc, char *argv[])
{
int sock;
struct sockaddr_in serv_addr;
char message[BUFSIZE];
int len;
int add;
if (argc != 3) {
printf("usage : %s <server's IP> <port>\n", argv[0]);
exit(1);
}
sock = socket(PF_INET, SOCK_STREAM, 0);
if (sock == -1)
error_handling("socket() error");
memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = inet_addr(argv[1]);
serv_addr.sin_port = htons(atoi(argv[2]));
if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) == -1)
error_handling("accept() error");
while (1)
{
fputs("\nInput number to send(q to quit) : ", stdout);
fgets(message, BUFSIZE, stdin);
if (!strcmp(message, "q\n"))
break;
write(sock, message, strlen(message));
len = read(sock, message, BUFSIZE-1);
message[len] = 0;
printf("Added Number from Server : %s\n", message);
}
close(sock);
return 0;
}
1.2 IPv4 서버
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#define BUFSIZE 1024
void error_handling(char *);
void
error_handling(char *message)
{
fputs(message, stderr);
fputc('\n', stderr);
exit(1);
}
int main (int argc, char *argv[])
{
int serv_sock, clnt_sock;
struct sockaddr_in serv_addr, clnt_addr;
int clnt_addr_size;
char message[BUFSIZE];
int len;
int add;
if (argc != 2) {
printf("usage : %s <port>\n", argv[0]);
exit(1);
}
serv_sock = socket(PF_INET, SOCK_STREAM, 0);
if (serv_sock == -1)
error_handling("socket() error");
memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = inet_addr("10.51.12.166");
serv_addr.sin_port = htons(atoi(argv[1]));
if (bind(serv_sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) == -1)
error_handling("bind() error");
if (listen(serv_sock, 5) == -1 )
error_handling("listen() error");
printf("server started!!(%s)\n", argv[1]);
clnt_addr_size = sizeof(clnt_addr);
clnt_sock = accept(serv_sock, (struct sockaddr *)&clnt_addr,&clnt_addr_size);
if (clnt_sock == -1)
error_handling("accept() error");
printf("clnt connected!!(%s:%d)\n",
inet_ntoa(clnt_addr.sin_addr), clnt_addr.sin_port);
int buf=0;
while ((len = read(clnt_sock, message, BUFSIZE)) != 0) {
buf+=atoi(message);
sprintf(message, "%d", buf);
len = strlen(message);
write(clnt_sock, message, len);
}
printf("server terminated\n");
close(clnt_sock);
return 0;
}
2.1 IPv6 클라이언트
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#define BUFSIZE 1024
void error_handling(char *);
void
error_handling(char *message)
{
fputs(message, stderr);
fputc('\n', stderr);
exit(1);
}
int main (int argc, char *argv[])
{
int sock;
struct sockaddr_in6 serv_addr;
char message[BUFSIZE];
int len;
int add;
if (argc != 3) {
printf("usage : %s <server's IP> <port>\n", argv[0]);
exit(1);
}
sock = socket(PF_INET6, SOCK_STREAM, 0);
if (sock == -1)
error_handling("socket() error");
memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin6_family = AF_INET6;
serv_addr.sin6_addr = in6addr_any;
serv_addr.sin6_port = htons(atoi(argv[2]));
if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) == -1)
error_handling("accept() error");
while (1)
{
fputs("\nInput number to send(q to quit) : ", stdout);
fgets(message, BUFSIZE, stdin);
if (!strcmp(message, "q\n"))
break;
write(sock, message, strlen(message));
len = read(sock, message, BUFSIZE-1);
message[len] = 0;
printf("Added Number from Server : %s\n", message);
}
close(sock);
return 0;
}
2.2 IPv6서버
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#define BUFSIZE 1024
void error_handling(char *);
void
error_handling(char *message)
{
fputs(message, stderr);
fputc('\n', stderr);
exit(1);
}
int main (int argc, char *argv[])
{
int serv_sock, clnt_sock;
struct sockaddr_in6 serv_addr, clnt_addr;
int clnt_addr_size;
char message[BUFSIZE];
int len;
int add;
if (argc != 2) {
printf("usage : %s <port>\n", argv[0]);
exit(1);
}
serv_sock = socket(PF_INET6, SOCK_STREAM, 0);
if (serv_sock == -1)
error_handling("socket() error");
memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin6_family = AF_INET6;
serv_addr.sin6_flowinfo = 0;
serv_addr.sin6_addr = in6addr_any;
serv_addr.sin6_port = htons(atoi(argv[1]));
if (bind(serv_sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) == -1)
error_handling("bind() error");
if (listen(serv_sock, 5) == -1 )
error_handling("listen() error");
printf("\nserver started!!(%s)\n", argv[1]);
clnt_addr_size = sizeof(clnt_addr);
clnt_sock = accept(serv_sock, (struct sockaddr *)&clnt_addr,&clnt_addr_size);
if (clnt_sock == -1)
error_handling("accept() error");
printf("\nclnt connected!!\n"
);
int buf=0;
while ((len = read(clnt_sock, message, BUFSIZE)) != 0) {
buf+=atoi(message);
sprintf(message, "%d", buf);
len = strlen(message);
write(clnt_sock, message, len);
}
printf("\nserver terminated!!!\n");
close(clnt_sock);
return 0;
}
작성일 : 2006.07.14
작성자 : 임헌정
http://www.4ellene.net
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