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/* TINYTC6.C - Tiny-TCP source fragment 
	Part 6 of the TCP layer. 
 
 * Copyright (C) 1986, IMAGEN Corporation 
 * "This code may be duplicated in whole or in part provided that [1] there 
 * is no commercial gain involved in the duplication, and [2] that this 
 * copyright notice is preserved on all copies. Any other duplication 
 * requires written notice of the author." 
 
|===================================================================| 
|  The author of this code hereby licenses all duplication and/or   | 
|  modification of this code, in whole or in part, consistent with  | 
|  the terms of the GNU Library General Public License.             | 
|              - Geoffrey H. Cooper 10/29/97                        | 
|===================================================================| 
 
|===================================================================| 
|  My changes can be considered public domain.  Geof's statement    | 
|  will cover everything.                                           | 
|              - Rick Rodman 09/02/97                               | 
|===================================================================| 
 
	941012	rr	split into fragments 
*/ 
 
#include "tinytcp.h" 
 
#include  
 
#ifdef PC 
#include  
#endif 
 
/* ----- globals from tinytcp.c ------------------------------------- */ 
 
extern	IP_Address	local_IP_address;	/* local IP address */ 
 
extern	int		tcp_id;			/* TCP ID, gets incremented */ 
 
extern	struct tcp_Socket *	tcp_allsocs;	/* socket linklist */ 
 
 
/* ----- tcp close -------------------------------------------------- */ 
 
/* Send a FIN on a particular port -- only works if it is open */ 
 
Void tcp_Close( s ) struct tcp_Socket *s; { 
	if( s -> state == TS_ESTAB || s -> state == TS_RSYN ) { 
		s -> flags = TCPF_ACK | TCPF_FIN; 
		s -> state = TS_SFIN; 
		s -> unhappy = True; 
	} 
} 
 
/* ----- Abort a tcp connection ------------------------------------- */ 
 
Void tcp_Abort( s ) struct tcp_Socket *s; { 
 
	if( s -> state != TS_LISTEN && s -> state != TS_CLOSED ) { 
		s -> flags = TCPF_RST | TCPF_ACK; 
		tcp_Send( s ); 
	} 
 
	s -> unhappy = 0; 
	s -> dataSize = 0; 
	s -> state = TS_CLOSED; 
 
	if( s -> dataHandler != 0 )		/* cast to Procref removed */ 
		( s -> dataHandler )(( void * ) s, ( Byte * ) 0, -1 ); 
	else	printf( "got abort, no handler\n" ); 
 
	tcp_Unthread( s ); 
} 
 
/* end of tinytc6.c */