On Thu 5 Sep 2013, Steve Holme wrote:
> Does select() always indicate that there is data waiting to be read
> even after previous reads or is it a one-time notification?
Modifying Curl_pp_statemach() to perform a read into a temporary buffer
seems to solve the problem:
if(Curl_pp_moredata(pp))
/* We are receiving and there is data in the cache so just read it */
rc = 1;
else if(!pp->sendleft && !Curl_read(conn, sock,buf, sizeof(buf), &nread)
&& nread) {
/* We have data waiting but may not receive a FDREAD from select() */
rc = 1;
pp->cache = malloc(nread);
pp->cache_size = nread;
memcpy(pp->cache, buf, nread);
}
else
rc = Curl_socket_ready(pp->sendleft?CURL_SOCKET_BAD:sock, /* reading */
pp->sendleft?sock:CURL_SOCKET_BAD, /* writing */
interval_ms);
I don't like this, hence why the code isn't production ready (no failed
check on the malloc call) but I'm not sure how else to tackle it at the
moment.
Is there a way to test if there is data waiting without using select() /
peek at the socket buffer?
Kind Regards
Steve
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