Configure: ./configure --with-http_spdy_module --with-http_stub_status_module --prefix=$(pwd)/../nginx --with-cc-opt=-O0
Reproduce: 1. use nginx(spdy/2) to build static file server 2. request large static file(16MB file, 10 streams in one session) $ spdycat --no-tls -2 -m 10 http://ip:spdy_port/16M_static_file 3. input ctrl-c to abort connection before spdycat exit 4. see output of stub status module $ curl http://ip:http_port/stub_status Active connections: 2 <<< always larger than 1, one connection leak server accepts handled requests 4 4 4 Reading: 0 Writing: 2 Waiting: 1 Note: If you cannot reproduce, try one more time. gdb trace: -> ngx_http_spdy_read_handler ... do { recv() do { sc->handler(sc, p, end) } while } while ->sc->handler() -> ... -> ngx_http_spdy_send_output_queue() -> c->send_chain(c, cl, 0); <<< (maybe) not send total chains stream->request->connection->write->handler = ngx_http_request_handler stream->request->write_event_handler = ngx_http_writer >>> client aborted the connection <<< -> ngx_http_spdy_read_handler ... do { rc = recv() if (rc == 0) <<< Client closed the connection. ngx_http_spdy_finalize_connection() } while ... -> ngx_http_spdy_finalize_connection -> ev->handler (stream->request->connection->write->handler) ngx_http_request_handler -> r->write_event_handler ngx_http_writer ... if (wev->delayed || r->aio) { <<< wev->delayed was set. ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, "http writer delayed"); if (ngx_handle_write_event(wev, clcf->send_lowat) != NGX_OK) { ngx_http_close_request(r, 0); } return; } ... In which case, this stream had not been finalized, and sc->processing was not decreased. After ngx_http_spdy_finalize_connection(), nginx got one connection(spdy session) leak.
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