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client.c
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client.c
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#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdlib.h>
const char *NAME = "./my_sock";
#define MSG "Hello world!"
#define MAX 1024
const int PORT = 2010;
int orig_sock;
//int main()
int socket_init(void)
{
struct sockaddr_in serv_adr;
struct hostent *host;
host = gethostbyname("localhost");
if ((orig_sock = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
perror("generate error");
return 1;
}
memset(&serv_adr, 0, sizeof(serv_adr));
serv_adr.sin_family = AF_INET;
memcpy(&serv_adr.sin_addr, host->h_addr, host->h_length);
serv_adr.sin_port = htons(PORT);
if (connect(orig_sock, (struct sockaddr*)&serv_adr,
sizeof(serv_adr)) < 0) {
perror("connect error");
return 2;
}
return 0;
}
#define SIZE 1048576*8
int main()
{
// char buf[MAX];
char *buf;
ssize_t ret = 0;
FILE *fp = fopen("a.bin", "wb");;
buf = malloc(SIZE);
socket_init();
buf[0] = '1';
printf("Sending a request\n");
write(orig_sock, &buf[0], 1);
printf("Waiting for server...\n");
do {
ret += read(orig_sock, buf+ret, SIZE - ret);
} while (ret != SIZE);
printf("read total: %lu bytes\n", ret);
fwrite(buf, SIZE, 1, fp);
buf[0] = '0';
printf("Sending end request, bye~\n");
write(orig_sock, &buf[0], 1);
printf("\n");
close(orig_sock);
free(buf);
fclose(fp);
return 0;
}