1 #include <netinet/in.h>
12 #include "../utils/utils.h"
14 int main(int argc, char **argv)
17 ssize_t ret, len, offset, bytes_to_write;
18 struct sockaddr_in psin;
20 char buffer[CHUNK_SIZE];
23 fprintf(stderr, "Usage: %s <peer_ip> <peer_port> <file_name>\n", argv[0]);
27 printf("Opening AF_INET socket\n");
29 /* first open the file descriptor */
30 file_fd = open(argv[3], O_CREAT|O_WRONLY|O_TRUNC, 0644);
32 printf("Cannot open file for write\n");
35 printf("Opened file for write %s[%d]\n", argv[3], file_fd);
37 sock = socket(AF_INET, SOCK_DGRAM, 0);
38 printf("Socket returned: %d\n", sock);
41 printf("Cannot create AF_INET socket: %s(%d)\n",
42 strerror(errno), errno);
45 printf("Successfully created AF_INET socket: %d\n", sock);
47 host = gethostbyname(argv[1]);
48 psin.sin_family = AF_INET;
49 psin.sin_port = htons(atoi(argv[2]));
50 psin.sin_addr = *((struct in_addr *)host->h_addr);
52 if (bind(sock, (struct sockaddr *)&psin,
53 sizeof(struct sockaddr_in)) == -1) {
54 printf("Cannot bind to server: %s(%d)\n", strerror(errno), errno);
58 printf("Bound to: %s:%s\n", argv[1], argv[2]);
61 ret = read(sock, buffer, CHUNK_SIZE);
63 printf("Error while receiving file %s: %s(%d)\n", argv[0],
64 strerror(errno), errno);
66 } else if (ret == 0) {
72 len = write(file_fd, buffer+offset, bytes_to_write);
74 printf("Error while receiving file %s: %s(%d)\n", argv[0],
75 strerror(errno), errno);
78 bytes_to_write -= len;
80 } while (bytes_to_write);
83 printf("Successfully read file %s\n", argv[3]);