Mercurial > hg > nginx
changeset 5923:2c10db908b8c
SPDY: push pending data while closing a stream as with keepalive.
This helps to avoid delays in sending the last chunk of data because
of bad interaction between Nagle's algorithm on nginx side and
delayed ACK on the client side.
Delays could also be caused by TCP_CORK/TCP_NOPUSH if SPDY was
working without SSL and sendfile() was used.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Fri, 21 Nov 2014 22:51:49 +0300 |
parents | 68f64bc17fa4 |
children | 58956c644ad0 |
files | src/http/ngx_http_spdy.c |
diffstat | 1 files changed, 51 insertions(+), 1 deletions(-) [+] |
line wrap: on
line diff
--- a/src/http/ngx_http_spdy.c Thu Nov 20 20:02:21 2014 +0300 +++ b/src/http/ngx_http_spdy.c Fri Nov 21 22:51:49 2014 +0300 @@ -3317,8 +3317,10 @@ void ngx_http_spdy_close_stream(ngx_http_spdy_stream_t *stream, ngx_int_t rc) { + int tcp_nodelay; ngx_event_t *ev; - ngx_connection_t *fc; + ngx_connection_t *c, *fc; + ngx_http_core_loc_conf_t *clcf; ngx_http_spdy_stream_t **index, *s; ngx_http_spdy_srv_conf_t *sscf; ngx_http_spdy_connection_t *sc; @@ -3344,6 +3346,54 @@ { sc->connection->error = 1; } + + } else { + c = sc->connection; + + if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) { + if (ngx_tcp_push(c->fd) == -1) { + ngx_connection_error(c, ngx_socket_errno, + ngx_tcp_push_n " failed"); + c->error = 1; + tcp_nodelay = 0; + + } else { + c->tcp_nopush = NGX_TCP_NOPUSH_UNSET; + tcp_nodelay = ngx_tcp_nodelay_and_tcp_nopush ? 1 : 0; + } + + } else { + tcp_nodelay = 1; + } + + clcf = ngx_http_get_module_loc_conf(stream->request, + ngx_http_core_module); + + if (tcp_nodelay + && clcf->tcp_nodelay + && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) + { + ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay"); + + if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY, + (const void *) &tcp_nodelay, sizeof(int)) + == -1) + { +#if (NGX_SOLARIS) + /* Solaris returns EINVAL if a socket has been shut down */ + c->log_error = NGX_ERROR_IGNORE_EINVAL; +#endif + + ngx_connection_error(c, ngx_socket_errno, + "setsockopt(TCP_NODELAY) failed"); + + c->log_error = NGX_ERROR_INFO; + c->error = 1; + + } else { + c->tcp_nodelay = NGX_TCP_NODELAY_SET; + } + } } if (sc->stream == stream) {