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wattcp.zip
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PCBUF.C
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C/C++ Source or Header
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1992-02-10
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1KB
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62 lines
#include <copyright.h>
#include <wattcp.h>
int sock_rbsize( tcp_Socket *s )
{
switch( _chk_socket( s )) {
case 0 : return( 0 );
case 1 : return( tcp_MaxBufSize );
case 2 : return( tcp_MaxBufSize );
}
}
int sock_rbused( tcp_Socket *s )
{
switch( _chk_socket( s )) {
case 0 : return( 0 );
case 1 : return( s->rdatalen );
case 2 : return( s->rdatalen );
}
}
int sock_rbleft( tcp_Socket *s )
{
switch( _chk_socket( s )) {
case 0 : return( 0 );
case 1 : return( tcp_MaxBufSize - s->rdatalen );
case 2 : return( tcp_MaxBufSize - s->rdatalen );
}
}
int sock_tbsize( tcp_Socket *s )
{
switch( _chk_socket( s )) {
case 2 : return( tcp_MaxBufSize );
default: return( 0 );
}
}
int sock_tbused( tcp_Socket *s )
{
switch( _chk_socket( s )) {
case 2 : return( s->datalen );
default: return( 0 );
}
}
int sock_tbleft( tcp_Socket *s )
{
switch( _chk_socket( s )) {
case 2 : return( tcp_MaxBufSize - s->datalen );
default: return( 0 );
}
}
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 );
}