48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* net_send.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jhalford <jack@crans.org> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2017/10/07 18:03:19 by jhalford #+# #+# */
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/* Updated: 2017/10/07 18:03:31 by jhalford ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "libft.h"
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int net_send(int sock, char *msg, int size)
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{
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int ack;
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if (write(sock, msg, size) < 0)
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return (-1);
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if (read(sock, (char*)&ack, sizeof(ack)) < 0)
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return (-1);
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if (ntohs(ack) != ACK)
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return (1);
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return (0);
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}
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int net_send_large(int sock, char *msg, int size)
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{
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int i;
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int num_blks;
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int num_last_blk;
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num_blks = htons(size / NET_MAXSIZE + 1);
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num_last_blk = htons(size % NET_MAXSIZE);
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if (net_send(sock, (char*)&num_blks, sizeof(num_blks)))
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return (1);
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if (net_send(sock, (char*)&num_last_blk, sizeof(num_blks)))
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return (1);
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num_blks = ntohs(num_blks);
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num_last_blk = ntohs(num_last_blk);
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i = -1;
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while (++i < num_blks - 1)
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net_send(sock, msg + i * NET_MAXSIZE, NET_MAXSIZE);
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if (num_last_blk)
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net_send(sock, msg + i * NET_MAXSIZE, num_last_blk);
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return (0);
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}
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