From c67124190c9caf42c9d63b889945f73ccafa3ac6 Mon Sep 17 00:00:00 2001 From: Maxim Dounin Date: Sat, 17 Mar 2018 23:04:23 +0300 Subject: Upstream: u->conf->preserve_output flag. The flag can be used to continue sending request body even after we've got a response from the backend. In particular, this is needed for gRPC proxying of bidirectional streaming RPCs, and also to send control frames in other forms of RPCs. --- src/http/ngx_http_upstream.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'src/http/ngx_http_upstream.c') diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c index bc98f81bc..680b664be 100644 --- a/src/http/ngx_http_upstream.c +++ b/src/http/ngx_http_upstream.c @@ -2031,7 +2031,9 @@ ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u, c->tcp_nopush = NGX_TCP_NOPUSH_UNSET; } - u->write_event_handler = ngx_http_upstream_dummy_handler; + if (!u->conf->preserve_output) { + u->write_event_handler = ngx_http_upstream_dummy_handler; + } if (ngx_handle_write_event(c->write, 0) != NGX_OK) { ngx_http_upstream_finalize_request(r, u, @@ -2193,7 +2195,7 @@ ngx_http_upstream_send_request_handler(ngx_http_request_t *r, #endif - if (u->header_sent) { + if (u->header_sent && !u->conf->preserve_output) { u->write_event_handler = ngx_http_upstream_dummy_handler; (void) ngx_handle_write_event(c->write, 0); -- cgit