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TMXR: Added loopback support for datagram configured lines to pass full packets in loopback mode.

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This commit is contained in:
Mark Pizzolato 2013-11-29 23:41:28 -08:00
parent 54b92b878e
commit 0f01e08a13
1 changed files with 29 additions and 3 deletions
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32
sim_tmxr.c
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@ -561,14 +561,20 @@ tmxr_linemsgf (lp, "\nDisconnected from the %s simulator\n\n", sim_name);/* repo
return;
}
static int32 loop_write (TMLN *lp, char *buf, int32 length)
static int32 loop_write_ex (TMLN *lp, char *buf, int32 length, t_bool prefix_datagram)
{
int32 written = 0;
int32 loopfree = lp->lpbsz - lp->lpbcnt;
if (lp->datagram && prefix_datagram) {
if ((size_t)loopfree < (size_t)(length + sizeof(length)))
return written;
loop_write_ex (lp, (char *)&length, sizeof(length), FALSE);
}
while (length) {
int32 chunksize;
int32 loopfree = lp->lpbsz - lp->lpbcnt;
loopfree = lp->lpbsz - lp->lpbcnt;
if (loopfree == 0)
break;
if (loopfree < length)
@ -589,7 +595,12 @@ lp->lpbcnt += written;
return written;
}
static int32 loop_read (TMLN *lp, char *buf, int32 bufsize)
static int32 loop_write (TMLN *lp, char *buf, int32 length)
{
return loop_write_ex (lp, buf, length, TRUE);
}
static int32 loop_read_ex (TMLN *lp, char *buf, int32 bufsize)
{
int32 bytesread = 0;
@ -617,6 +628,21 @@ lp->lpbcnt -= bytesread;
return bytesread;
}
static int32 loop_read (TMLN *lp, char *buf, int32 bufsize)
{
if (lp->datagram) {
int32 pktsize;
if (lp->lpbcnt < sizeof(pktsize))
return 0;
if ((sizeof(pktsize) != loop_read_ex (lp, (char *)&pktsize, sizeof(pktsize))) ||
(pktsize > bufsize))
return -1;
bufsize = pktsize;
}
return loop_read_ex (lp, buf, bufsize);
}
/* Read from a line.
Up to "length" characters are read into the character buffer associated with