Hi Christian,
I have a problem with the latest releases of libmicrohttpd
Previously I was using version 0.9.7 and I have recently upgraded to 0.9.20 and I have also checked this in 0.9.24
I use a ContentReader Callback to chunk my video data
response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
1024,
&crc, responseptr, &crcf);
Sometime, in the callback I throw away a frame of data, so I return zero from the callback, like this.
static ssize_t
crc (void *cls, uint64_t pos, char *buf, size_t max)
{.
.
.
if (NothingToDo)
{
return 0; // MHD should call me back later
}
else
{
//do stuff
.
.
.
return no_of_bytes_processed;
}
}
If I return zero from the callback I expect MHD to call me back some short time later.
This has always worked for me in the past but now, when I return zero, from the callback, version 0.9.20 does not call me back until after a delay of around 6 seconds by which time the client has timed out. Version 0.9.24 is worse and actually crashes the program with the following error:-
Fatal error in GNU libmicrohttpd connection.c:395: API violation
Aborted
Is it no longer allowed to return zero from a ContentReaderCallback?
Best regards
David