protocol.h

UNIX/Linux环境下使用广播方式进行数据收发的代码

#ifndef _PROTOCOL_H
#  define _PROTOCOL_H

#  define BUFFER_SIZE_NICKNAME	128
#  define BUFFER_SIZE_COMMENTS	512
#  define BUFFER_SIZE_MESSAGE	1024

#  define PIGEON_SERVICE_PORT	9001

typedef struct header
{
  unsigned long version;
  unsigned long length;
  unsigned long command;
} header_t;

typedef struct announcement
{
  char nickname[BUFFER_SIZE_NICKNAME];
  char comments[BUFFER_SIZE_COMMENTS];
} announcement_t;

#  define COMMAND_ANNOUNCEMENT	0x01
#  define COMMAND_QUERY		0x02

#  define COMMAND_SEND_MESSAGE	0x10

#endif