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server.c
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server.c
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#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <arpa/inet.h>
#include <stdlib.h>
const char *NAME = "./my_sock";
#define MAX 1024
socklen_t clnt_len;
int orig_sock, new_sock;
static struct sockaddr_in clnt_adr, serv_adr;
const int PORT = 2010;
void clean_up(int , const char*);
void start_socket()
{
if ((orig_sock = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
perror("generate error");
}
}
void start_bind()
{
memset(&serv_adr, 0, sizeof(serv_adr));
serv_adr.sin_family = AF_INET;
serv_adr.sin_addr.s_addr = htonl(INADDR_ANY);
serv_adr.sin_port = htons(PORT);
if (bind(orig_sock, (struct sockaddr *)&serv_adr,
sizeof(serv_adr)) < 0) {
perror("bind error");
clean_up(orig_sock, NAME);
}
}
void start_listen()
{
listen(orig_sock, 5);
}
void start_accept()
{
clnt_len = sizeof(clnt_adr);
if ((new_sock = accept(orig_sock, (struct sockaddr *)&clnt_adr, &clnt_len)) < 0) {
perror("accept error");
clean_up(orig_sock, NAME);
}
}
#define SIZE 1048576*8
int main(int argc, char **argv)
{
char *clnt_buf;
char recv_buf[MAX];
ssize_t ret;
clnt_buf = malloc(SIZE);
memset(clnt_buf, 'A', SIZE);
start_socket();
start_bind();
start_listen();
start_accept();
for (;;) {
read(new_sock, &recv_buf, 1);
while (recv_buf[0] == '1') {
ret = 0;
do {
ret += write(new_sock, clnt_buf, SIZE - ret);
printf("write %lu bytes\n", ret);
} while (ret != SIZE);
read(new_sock, &recv_buf, 1);
}
printf("Client ask me to close\n");
close(new_sock);
printf("Wait for another connection\n");
start_accept();
}
close(new_sock);
free(clnt_buf);
clean_up(orig_sock, NAME);
return 0;
}
void clean_up(int sd, const char *the_file)
{
close(sd);
unlink(the_file);
}