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chat.h

/*
    CHAT:  A chat client/server using the SDL example network library
    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    slouken@libsdl.org
*/

/* $Id: chat.h,v 1.2 2001/12/14 13:06:00 slouken Exp $ */

/* Convert four letters into a number */
#define MAKE_NUM(A, B, C, D)  (((A+B)<<8)|(C+D))

/* Defines for the chat client */
#define CHAT_SCROLLBACK 512         /* Save 512 lines in scrollback */
#define CHAT_PROMPT     "> "
#define CHAT_PACKETSIZE 256         /* Maximum length of a message */

/* Defines shared between the server and client */
#define CHAT_PORT MAKE_NUM('C','H','A','T')

/* The protocol between the chat client and server */
#define CHAT_HELLO      0     /* 0+Port+len+name */
#define CHAT_HELLO_PORT       1
#define CHAT_HELLO_NLEN       CHAT_HELLO_PORT+2
#define CHAT_HELLO_NAME       CHAT_HELLO_NLEN+1
#define CHAT_ADD  1     /* 1+N+IP+Port+len+name */
#define CHAT_ADD_SLOT         1
#define CHAT_ADD_HOST         CHAT_ADD_SLOT+1
#define CHAT_ADD_PORT         CHAT_ADD_HOST+4
#define CHAT_ADD_NLEN         CHAT_ADD_PORT+2
#define CHAT_ADD_NAME         CHAT_ADD_NLEN+1
#define CHAT_DEL  2     /* 2+N */
#define CHAT_DEL_SLOT         1
#define CHAT_DEL_LEN          CHAT_DEL_SLOT+1
#define CHAT_BYE  255   /* 255 */
#define CHAT_BYE_LEN          1

/* The maximum number of people who can talk at once */
#define CHAT_MAXPEOPLE  10

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