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PCBUF.C
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1994-11-28
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#include <copyright.h>
#include <wattcp.h>
#include <mem.h>
int sock_rbsize( sock_type *s )
{
switch( _chk_socket( s )) {
case 1 : return( tcp_MaxBufSize );
case 2 : return( tcp_MaxBufSize );
/* case 0 : */
default: return( 0 );
}
}
int sock_rbused( sock_type *s )
{
switch( _chk_socket( s )) {
case 1 : return( s->udp.rdatalen );
case 2 : return( s->tcp.rdatalen );
/* case 0 : */
default: return( 0 );
}
}
int sock_rbleft( sock_type *s )
{
switch( _chk_socket( s )) {
case 1 : return( tcp_MaxBufSize - s->udp.rdatalen );
case 2 : return( tcp_MaxBufSize - s->tcp.rdatalen );
/* case 0 : */
default: return( 0 );
}
}
int sock_tbsize( sock_type *s )
{
switch( _chk_socket( s )) {
case 2 : return( tcp_MaxBufSize );
default: return( 0 );
}
}
int sock_tbused( sock_type *s )
{
switch( _chk_socket( s )) {
case 2 : return( s->tcp.datalen );
default: return( 0 );
}
}
int sock_tbleft( sock_type *s )
{
switch( _chk_socket( s )) {
case 2 : return( tcp_MaxBufSize - s->tcp.datalen );
default: return( 0 );
}
}
int sock_preread( sock_type *s, byte *dp, int len )
{
int count;
if ( (count = s->udp.rdatalen) < 1) /* 0 : no data, -1 : error */
return( count );
if ( count > len ) count = len;
movmem( s->udp.rdata, dp, count );
return( count );
}