34 lines
795 B
C
34 lines
795 B
C
#ifndef PROTOCOL_H
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#define PROTOCOL_H
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#include <limits.h>
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#include <stdint.h>
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#include <string.h>
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#include <time.h>
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#define VERSION 1
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#define MAX_CONTENT_SIZE (PIPE_BUF - sizeof(struct MessageHeader))
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#define MESSAGE_SIZE sizeof(struct Message)
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typedef struct MessageHeader {
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// The protocol's version
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unsigned int version;
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// The sender is a user
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unsigned int sender;
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// The receiver is either a user or a group
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unsigned int receiver;
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// The message was sent at this timestamp
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time_t timestamp;
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} message_header;
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typedef struct Message {
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// The message's header
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message_header header;
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// The buffer holding the message
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char content[MAX_CONTENT_SIZE];
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} message;
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int new_message(message *m, unsigned int sender, unsigned int receiver, char *content);
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#endif // !PROTOCOL_H
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