Nortek Signature Series - Page 84

Integrator's Guide84
© 2017 Nortek AS
if (WSAGetLastError() == WSAETIMEDOUT) {
/* No data received within timeout period. Could either loop or
* re-open / check connection at this point.
*/
printf("Socket read timed out\n\n");
} else {
/* Local socket error. Re-connect required. */
wchar_t *s = NULL;
FormatMessageW(
FORMAT_MESSAGE_ALLOCATE_BUFFER
| FORMAT_MESSAGE_FROM_SYSTEM
| FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, WSAGetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPWSTR) &s, 0, NULL);
printf("Socket read failed %S\n\n", s);
LocalFree(s);
}
}
break;
}
#else
if ((r = read(socket_fd, &c, 1)) <= 0) {
if (r == 0) {
/* Instrument terminated socket for some reason. Re-connect required. */
printf("Server terminated socket\n\n");
} else {
if (errno == EAGAIN) {
/* No data received within timeout period. Could either loop or
* re-open / check connection at this point.
*/
printf("Socket read timed out\n\n");
} else {
/* Local socket error. Re-connect required. */
printf("Socket read failed (%d) %s\n\n", errno, strerror(errno));
}
}
break;
}
#endif
dataBuffer[length++] = c;
if (length >= sizeof(dataBuffer)) {
printf("Truncating data input...\n\n");
length = sizeof(dataBuffer) - 1;
}
/* Set last byte to 0 so that strings are zero terminated. */
dataBuffer[length] = 0;
if ('\n' == c) {
/* '\n' indicates end-of-line for ASCII data. */