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patch #9304: [Bug #48767] Implemented WinSock variation of "ser_drain(...)" functionality

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Submitted by Christopher Cooper:
* ser_win32.c (ser_drain): Implement a network drain
function.




git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1499 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Joerg Wunsch
2021-11-27 21:15:55 +00:00
parent c9a1405547
commit 4396674aa7
3 changed files with 95 additions and 0 deletions
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86
ser_win32.c
View File

@@ -628,9 +628,95 @@ static int ser_recv(union filedescriptor *fd, unsigned char * buf, size_t buflen
return 0;
}
#ifdef HAVE_LIBWS2_32
static int net_drain(union filedescriptor *fd, int display)
{
LPVOID lpMsgBuf;
struct timeval timeout;
fd_set rfds;
int nfds;
unsigned char buf;
int rc;
if (fd->ifd < 0) {
avrdude_message(MSG_INFO, "%s: ser_drain(): connection not open\n", progname);
exit(1);
}
if (display) {
avrdude_message(MSG_INFO, "drain>");
}
timeout.tv_sec = 0;
timeout.tv_usec = 250000;
while (1) {
FD_ZERO(&rfds);
FD_SET(fd->ifd, &rfds);
reselect:
nfds = select(fd->ifd + 1, &rfds, NULL, NULL, &timeout);
if (nfds == 0) {
if (display) {
avrdude_message(MSG_INFO, "<drain\n");
}
break;
}
else if (nfds == -1) {
if (WSAGetLastError() == WSAEINTR || WSAGetLastError() == WSAEINPROGRESS) {
avrdude_message(MSG_NOTICE, "%s: ser_drain(): programmer is not responding, reselecting\n", progname);
goto reselect;
} else {
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
WSAGetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR)&lpMsgBuf,
0,
NULL);
avrdude_message(MSG_INFO, "%s: ser_drain(): select(): %s\n", progname, (char *)lpMsgBuf);
LocalFree(lpMsgBuf);
exit(1);
}
}
rc = recv(fd->ifd, &buf, 1, 0);
if (rc < 0) {
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
WSAGetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR)&lpMsgBuf,
0,
NULL);
avrdude_message(MSG_INFO, "%s: ser_drain(): read error: %s\n", progname, (char *)lpMsgBuf);
LocalFree(lpMsgBuf);
exit(1);
}
if (display) {
avrdude_message(MSG_INFO, "%02x ", buf);
}
}
return 0;
}
#endif
static int ser_drain(union filedescriptor *fd, int display)
{
#ifdef HAVE_LIBWS2_32
if (serial_over_ethernet) {
return net_drain(fd, display);
}
#endif
// int rc;
unsigned char buf[10];
BOOL readres;