Simplified sendfile_max_chunk handling.
Previously, it was checked that sendfile_max_chunk was enabled and
almost whole sendfile_max_chunk was sent (see e67ef50c3176), to avoid
delaying connections where sendfile_max_chunk wasn't reached (for example,
when sending responses smaller than sendfile_max_chunk). Now we instead
check if there are unsent data, and the connection is still ready for writing.
Additionally we also check c->write->delayed to ignore connections already
delayed by limit_rate.
This approach is believed to be more robust, and correctly handles
not only sendfile_max_chunk, but also internal limits of c->send_chain(),
such as sendfile() maximum supported length (ticket #1870).
diff --git a/src/http/ngx_http_write_filter_module.c b/src/http/ngx_http_write_filter_module.c
index bd37704..932f26d 100644
--- a/src/http/ngx_http_write_filter_module.c
+++ b/src/http/ngx_http_write_filter_module.c
@@ -321,16 +321,12 @@
delay = (ngx_msec_t) ((nsent - sent) * 1000 / r->limit_rate);
if (delay > 0) {
- limit = 0;
c->write->delayed = 1;
ngx_add_timer(c->write, delay);
}
}
- if (limit
- && c->write->ready
- && c->sent - sent >= limit - (off_t) (2 * ngx_pagesize))
- {
+ if (chain && c->write->ready && !c->write->delayed) {
ngx_post_event(c->write, &ngx_posted_next_events);
}
