Main Page   Class Hierarchy   Compound List   File List   Compound Members   File Members  

imp_exp_gen.h

Go to the documentation of this file.
00001 
00002 /*
00003  *   THIS FILE IS UNDER RCS - DO NOT MODIFY UNLESS YOU HAVE
00004  *   CHECKED IT OUT USING THE COMMAND CHECKOUT.
00005  *
00006  *    $Id: imp__exp__gen_8h-source.html 2161 2006-05-19 16:55:03Z paulf $
00007  *
00008  *    Revision history:
00009  *     $Log$
00009  *     Revision 1.1  2006/05/19 16:55:02  paulf
00009  *     first inclusion
00009  *
00010  *     Revision 1.2  2000/07/24 18:54:14  lucky
00011  *     Added MAX_ALIVE_STR definition so that import and export can
00012  *     agree on the max length.
00013  *
00014  *     Revision 1.1  2000/02/14 20:05:54  lucky
00015  *     Initial revision
00016  *
00017  *
00018  */
00019 
00020 #ifndef IMP_EXP_GEN_H
00021 #define IMP_EXP_GEN_H
00022 
00023 /* This is the include file for import_generic and export_generic, created
00024    to deal with  binary messages . Alex 10/10/96 */
00025 /*
00026 Modified to read binary messages, alex 10/10/96: 
00027 The scheme (I got it from Carl) is define some sacred characters. Sacred characters
00028 are the start-of-message and end-of-message framing characters, and an 
00029 escape character. The sender's job is to cloak unfortunate bit patterns
00030 in the data which look like sacred characters by inserting before
00031 them an 'escape' character.  Our problem here is to recognize,
00032 and use, the 'real' start- and end-of-messge characters, 
00033 and to 'decloak' any unfortunate look-alikes within the message body.
00034 */
00035 
00036 /* Modified to only accept a SocketTimeout parameter if there are no 
00037    heartbeat messages, that is the SenderHeartRate or RcvAliveInt is 
00038    set to 0, otherwise the SocketTimeout is based on the heartrate interval
00039    as prescribed in the config file by RcvAliveInt or SenderHeartRate
00040    12/16/97 Davidk
00041 */
00042 
00043 
00044 #define         MAX_ALIVE_STR   256     /* max size of the alive string */
00045 
00046 
00047 /* The sacred characters: */
00048 
00049 #define STX 2     /* Start Transmission: used to frame beginning of message */
00050 #define ETX 3     /* End Transmission: used to frame end of message */
00051 #define ESC 27    /* Escape: used to 'cloak' unfortunate binary bit patterns which look like sacred characters */
00052 
00053 /* Define States for Socket Message Receival */
00054 #      define SEARCHING_FOR_MESSAGE_START 0
00055 #      define EXPECTING_MESSAGE_START 1
00056 #      define ASSEMBLING_MESSAGE 2
00057 
00058 /* Define Buffer Size for Socket Receiving Buffer */
00059 #      define INBUFFERSIZE 100
00060 
00061 #endif

Generated on Tue May 6 09:16:03 2003 for Earthworm Libs by doxygen1.3-rc3