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SUSE:SLE-15-SP3:GA
apache2.21779
apache2-mod_http2-1.11.0.patch
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File apache2-mod_http2-1.11.0.patch of Package apache2.21779
Index: httpd-2.4.33/modules/http2/h2_from_h1.c =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_from_h1.c 2018-10-01 16:58:14.911879563 +0200 +++ httpd-2.4.33/modules/http2/h2_from_h1.c 2018-10-01 16:58:14.927879652 +0200 @@ -209,10 +209,18 @@ static h2_headers *create_response(h2_ta /* determine the protocol and whether we should use keepalives. */ ap_set_keepalive(r); - if (r->chunked) { + if (AP_STATUS_IS_HEADER_ONLY(r->status)) { + apr_table_unset(r->headers_out, "Transfer-Encoding"); apr_table_unset(r->headers_out, "Content-Length"); + r->content_type = r->content_encoding = NULL; + r->content_languages = NULL; + r->clength = r->chunked = 0; } - + else if (r->chunked) { + apr_table_mergen(r->headers_out, "Transfer-Encoding", "chunked"); + apr_table_unset(r->headers_out, "Content-Length"); + } + ctype = ap_make_content_type(r, r->content_type); if (ctype) { apr_table_setn(r->headers_out, "Content-Type", ctype); Index: httpd-2.4.33/modules/http2/h2_session.c =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_session.c 2018-10-01 16:58:14.915879585 +0200 +++ httpd-2.4.33/modules/http2/h2_session.c 2018-10-01 16:58:14.927879652 +0200 @@ -235,6 +235,7 @@ static int on_data_chunk_recv_cb(nghttp2 stream = h2_session_stream_get(session, stream_id); if (stream) { status = h2_stream_recv_DATA(stream, flags, data, len); + dispatch_event(session, H2_SESSION_EV_STREAM_CHANGE, 0, "stream data rcvd"); } else { ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03064) @@ -317,9 +318,9 @@ static int on_header_cb(nghttp2_session } /** - * nghttp2 session has received a complete frame. Most, it uses - * for processing of internal state. HEADER and DATA frames however - * we need to handle ourself. + * nghttp2 session has received a complete frame. Most are used by nghttp2 + * for processing of internal state. Some, like HEADER and DATA frames, + * we need to act on. */ static int on_frame_recv_cb(nghttp2_session *ng2s, const nghttp2_frame *frame, @@ -378,6 +379,9 @@ static int on_frame_recv_cb(nghttp2_sess "h2_stream(%ld-%d): WINDOW_UPDATE incr=%d", session->id, (int)frame->hd.stream_id, frame->window_update.window_size_increment); + if (nghttp2_session_want_write(session->ngh2)) { + dispatch_event(session, H2_SESSION_EV_FRAME_RCVD, 0, "window update"); + } break; case NGHTTP2_RST_STREAM: ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03067) @@ -404,6 +408,12 @@ static int on_frame_recv_cb(nghttp2_sess frame->goaway.error_code, NULL); } break; + case NGHTTP2_SETTINGS: + if (APLOGctrace2(session->c)) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, + H2_SSSN_MSG(session, "SETTINGS, len=%ld"), (long)frame->hd.length); + } + break; default: if (APLOGctrace2(session->c)) { char buffer[256]; @@ -415,7 +425,40 @@ static int on_frame_recv_cb(nghttp2_sess } break; } - return (APR_SUCCESS == rv)? 0 : NGHTTP2_ERR_PROTO; + + if (session->state == H2_SESSION_ST_IDLE) { + /* We received a frame, but session is in state IDLE. That means the frame + * did not really progress any of the (possibly) open streams. It was a meta + * frame, e.g. SETTINGS/WINDOW_UPDATE/unknown/etc. + * Remember: IDLE means we cannot send because either there are no streams open or + * all open streams are blocked on exhausted WINDOWs for outgoing data. + * The more frames we receive that do not change this, the less interested we + * become in serving this connection. This is expressed in increasing "idle_delays". + * Eventually, the connection will timeout and we'll close it. */ + session->idle_frames = H2MIN(session->idle_frames + 1, session->frames_received); + ap_log_cerror( APLOG_MARK, APLOG_TRACE2, 0, session->c, + H2_SSSN_MSG(session, "session has %ld idle frames"), + (long)session->idle_frames); + if (session->idle_frames > 10) { + apr_size_t busy_frames = H2MAX(session->frames_received - session->idle_frames, 1); + int idle_ratio = (int)(session->idle_frames / busy_frames); + if (idle_ratio > 100) { + session->idle_delay = apr_time_from_msec(H2MIN(1000, idle_ratio)); + } + else if (idle_ratio > 10) { + session->idle_delay = apr_time_from_msec(10); + } + else if (idle_ratio > 1) { + session->idle_delay = apr_time_from_msec(1); + } + else { + session->idle_delay = 0; + } + } + } + + if (APR_SUCCESS != rv) return NGHTTP2_ERR_PROTO; + return 0; } static int h2_session_continue_data(h2_session *session) { @@ -1603,23 +1646,57 @@ static void update_child_status(h2_sessi static void transit(h2_session *session, const char *action, h2_session_state nstate) { + apr_time_t timeout; + int ostate, loglvl; + const char *s; + if (session->state != nstate) { - int loglvl = APLOG_DEBUG; - if ((session->state == H2_SESSION_ST_BUSY && nstate == H2_SESSION_ST_WAIT) - || (session->state == H2_SESSION_ST_WAIT && nstate == H2_SESSION_ST_BUSY)){ + ostate = session->state; + session->state = nstate; + + loglvl = APLOG_DEBUG; + if ((ostate == H2_SESSION_ST_BUSY && nstate == H2_SESSION_ST_WAIT) + || (ostate == H2_SESSION_ST_WAIT && nstate == H2_SESSION_ST_BUSY)){ loglvl = APLOG_TRACE1; } ap_log_cerror(APLOG_MARK, loglvl, 0, session->c, H2_SSSN_LOG(APLOGNO(03078), session, "transit [%s] -- %s --> [%s]"), - h2_session_state_str(session->state), action, + h2_session_state_str(ostate), action, h2_session_state_str(nstate)); - session->state = nstate; + switch (session->state) { case H2_SESSION_ST_IDLE: - update_child_status(session, (session->open_streams == 0? - SERVER_BUSY_KEEPALIVE - : SERVER_BUSY_READ), "idle"); + if (!session->remote.emitted_count) { + /* on fresh connections, with async mpm, do not return + * to mpm for a second. This gives the first request a better + * chance to arrive (und connection leaving IDLE state). + * If we return to mpm right away, this connection has the + * same chance of being cleaned up by the mpm as connections + * that already served requests - not fair. */ + session->idle_sync_until = apr_time_now() + apr_time_from_sec(1); + s = "timeout"; + timeout = H2MAX(session->s->timeout, session->s->keep_alive_timeout); + update_child_status(session, SERVER_BUSY_READ, "idle"); + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, + H2_SSSN_LOG("", session, "enter idle, timeout = %d sec"), + (int)apr_time_sec(H2MAX(session->s->timeout, session->s->keep_alive_timeout))); + } + else if (session->open_streams) { + s = "timeout"; + timeout = session->s->keep_alive_timeout; + update_child_status(session, SERVER_BUSY_KEEPALIVE, "idle"); + } + else { + /* normal keepalive setup */ + s = "keepalive"; + timeout = session->s->keep_alive_timeout; + update_child_status(session, SERVER_BUSY_KEEPALIVE, "idle"); + } + session->idle_until = apr_time_now() + timeout; + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, + H2_SSSN_LOG("", session, "enter idle, %s = %d sec"), + s, (int)apr_time_sec(timeout)); break; case H2_SESSION_ST_DONE: update_child_status(session, SERVER_CLOSING, "done"); @@ -1726,8 +1803,6 @@ static void h2_session_ev_no_io(h2_sessi * This means we only wait for WINDOW_UPDATE from the * client and can block on READ. */ transit(session, "no io (flow wait)", H2_SESSION_ST_IDLE); - session->idle_until = apr_time_now() + session->s->timeout; - session->keep_sync_until = session->idle_until; /* Make sure we have flushed all previously written output * so that the client will react. */ if (h2_conn_io_flush(&session->io) != APR_SUCCESS) { @@ -1738,12 +1813,7 @@ static void h2_session_ev_no_io(h2_sessi } else if (session->local.accepting) { /* When we have no streams, but accept new, switch to idle */ - apr_time_t now = apr_time_now(); transit(session, "no io (keepalive)", H2_SESSION_ST_IDLE); - session->idle_until = (session->remote.emitted_count? - session->s->keep_alive_timeout : - session->s->timeout) + now; - session->keep_sync_until = now + apr_time_from_sec(1); } else { /* We are no longer accepting new streams and there are @@ -1758,12 +1828,25 @@ static void h2_session_ev_no_io(h2_sessi } } -static void h2_session_ev_data_read(h2_session *session, int arg, const char *msg) +static void h2_session_ev_frame_rcvd(h2_session *session, int arg, const char *msg) +{ + switch (session->state) { + case H2_SESSION_ST_IDLE: + case H2_SESSION_ST_WAIT: + transit(session, "frame received", H2_SESSION_ST_BUSY); + break; + default: + /* nop */ + break; + } +} + +static void h2_session_ev_stream_change(h2_session *session, int arg, const char *msg) { switch (session->state) { case H2_SESSION_ST_IDLE: case H2_SESSION_ST_WAIT: - transit(session, "data read", H2_SESSION_ST_BUSY); + transit(session, "stream change", H2_SESSION_ST_BUSY); break; default: /* nop */ @@ -1803,16 +1886,6 @@ static void h2_session_ev_pre_close(h2_s static void ev_stream_open(h2_session *session, h2_stream *stream) { h2_iq_append(session->in_process, stream->id); - switch (session->state) { - case H2_SESSION_ST_IDLE: - if (session->open_streams == 1) { - /* enter timeout, since we have a stream again */ - session->idle_until = (session->s->timeout + apr_time_now()); - } - break; - default: - break; - } } static void ev_stream_closed(h2_session *session, h2_stream *stream) @@ -1825,11 +1898,6 @@ static void ev_stream_closed(h2_session } switch (session->state) { case H2_SESSION_ST_IDLE: - if (session->open_streams == 0) { - /* enter keepalive timeout, since we no longer have streams */ - session->idle_until = (session->s->keep_alive_timeout - + apr_time_now()); - } break; default: break; @@ -1887,6 +1955,7 @@ static void on_stream_state_enter(void * default: break; } + dispatch_event(session, H2_SESSION_EV_STREAM_CHANGE, 0, "stream state change"); } static void on_stream_event(void *ctx, h2_stream *stream, @@ -1945,8 +2014,8 @@ static void dispatch_event(h2_session *s case H2_SESSION_EV_NO_IO: h2_session_ev_no_io(session, arg, msg); break; - case H2_SESSION_EV_DATA_READ: - h2_session_ev_data_read(session, arg, msg); + case H2_SESSION_EV_FRAME_RCVD: + h2_session_ev_frame_rcvd(session, arg, msg); break; case H2_SESSION_EV_NGH2_DONE: h2_session_ev_ngh2_done(session, arg, msg); @@ -1957,6 +2026,9 @@ static void dispatch_event(h2_session *s case H2_SESSION_EV_PRE_CLOSE: h2_session_ev_pre_close(session, arg, msg); break; + case H2_SESSION_EV_STREAM_CHANGE: + h2_session_ev_stream_change(session, arg, msg); + break; default: ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, H2_SSSN_MSG(session, "unknown event %d"), ev); @@ -1990,13 +2062,15 @@ apr_status_t h2_session_process(h2_sessi apr_status_t status = APR_SUCCESS; conn_rec *c = session->c; int rv, mpm_state, trace = APLOGctrace3(c); - + apr_time_t now; + if (trace) { ap_log_cerror( APLOG_MARK, APLOG_TRACE3, status, c, H2_SSSN_MSG(session, "process start, async=%d"), async); } while (session->state != H2_SESSION_ST_DONE) { + now = apr_time_now(); session->have_read = session->have_written = 0; if (session->local.accepting @@ -2034,39 +2108,42 @@ apr_status_t h2_session_process(h2_sessi break; case H2_SESSION_ST_IDLE: - /* We trust our connection into the default timeout/keepalive - * handling of the core filters/mpm iff: - * - keep_sync_until is not set - * - we have an async mpm - * - we have no open streams to process - * - we are not sitting on a Upgrade: request - * - we already have seen at least one request - */ - if (!session->keep_sync_until && async && !session->open_streams - && !session->r && session->remote.emitted_count) { + if (session->idle_until && (apr_time_now() + session->idle_delay) > session->idle_until) { + ap_log_cerror( APLOG_MARK, APLOG_TRACE1, status, c, + H2_SSSN_MSG(session, "idle, timeout reached, closing")); + if (session->idle_delay) { + apr_table_setn(session->c->notes, "short-lingering-close", "1"); + } + dispatch_event(session, H2_SESSION_EV_CONN_TIMEOUT, 0, "timeout"); + goto out; + } + + if (session->idle_delay) { + /* we are less interested in spending time on this connection */ + ap_log_cerror( APLOG_MARK, APLOG_TRACE2, status, c, + H2_SSSN_MSG(session, "session is idle (%ld ms), idle wait %ld sec left"), + (long)apr_time_as_msec(session->idle_delay), + (long)apr_time_sec(session->idle_until - now)); + apr_sleep(session->idle_delay); + session->idle_delay = 0; + } + + h2_conn_io_flush(&session->io); + if (async && !session->r && (now > session->idle_sync_until)) { if (trace) { ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, c, H2_SSSN_MSG(session, "nonblock read, %d streams open"), session->open_streams); } - h2_conn_io_flush(&session->io); status = h2_session_read(session, 0); if (status == APR_SUCCESS) { session->have_read = 1; - dispatch_event(session, H2_SESSION_EV_DATA_READ, 0, NULL); } - else if (APR_STATUS_IS_EAGAIN(status) - || APR_STATUS_IS_TIMEUP(status)) { - if (apr_time_now() > session->idle_until) { - dispatch_event(session, - H2_SESSION_EV_CONN_TIMEOUT, 0, NULL); - } - else { - status = APR_EAGAIN; - goto out; - } + else if (APR_STATUS_IS_EAGAIN(status) || APR_STATUS_IS_TIMEUP(status)) { + status = APR_EAGAIN; + goto out; } else { ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, c, @@ -2078,7 +2155,6 @@ apr_status_t h2_session_process(h2_sessi } else { /* make certain, we send everything before we idle */ - h2_conn_io_flush(&session->io); if (trace) { ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, c, H2_SSSN_MSG(session, @@ -2090,7 +2166,6 @@ apr_status_t h2_session_process(h2_sessi */ status = h2_mplx_idle(session->mplx); if (status == APR_EAGAIN) { - dispatch_event(session, H2_SESSION_EV_DATA_READ, 0, NULL); break; } else if (status != APR_SUCCESS) { @@ -2101,33 +2176,11 @@ apr_status_t h2_session_process(h2_sessi status = h2_session_read(session, 1); if (status == APR_SUCCESS) { session->have_read = 1; - dispatch_event(session, H2_SESSION_EV_DATA_READ, 0, NULL); } else if (status == APR_EAGAIN) { /* nothing to read */ } else if (APR_STATUS_IS_TIMEUP(status)) { - apr_time_t now = apr_time_now(); - if (now > session->keep_sync_until) { - /* if we are on an async mpm, now is the time that - * we may dare to pass control to it. */ - session->keep_sync_until = 0; - } - if (now > session->idle_until) { - if (trace) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, c, - H2_SSSN_MSG(session, - "keepalive timeout")); - } - dispatch_event(session, - H2_SESSION_EV_CONN_TIMEOUT, 0, "timeout"); - } - else if (trace) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, c, - H2_SSSN_MSG(session, - "keepalive, %f sec left"), - (session->idle_until - now) / 1000000.0f); - } /* continue reading handling */ } else if (APR_STATUS_IS_ECONNABORTED(status) @@ -2145,6 +2198,18 @@ apr_status_t h2_session_process(h2_sessi dispatch_event(session, H2_SESSION_EV_CONN_ERROR, 0, "error"); } } + if (nghttp2_session_want_write(session->ngh2)) { + ap_update_child_status(session->c->sbh, SERVER_BUSY_WRITE, NULL); + status = h2_session_send(session); + if (status == APR_SUCCESS) { + status = h2_conn_io_flush(&session->io); + } + if (status != APR_SUCCESS) { + dispatch_event(session, H2_SESSION_EV_CONN_ERROR, + H2_ERR_INTERNAL_ERROR, "writing"); + break; + } + } break; case H2_SESSION_ST_BUSY: @@ -2154,7 +2219,6 @@ apr_status_t h2_session_process(h2_sessi status = h2_session_read(session, 0); if (status == APR_SUCCESS) { session->have_read = 1; - dispatch_event(session, H2_SESSION_EV_DATA_READ, 0, NULL); } else if (status == APR_EAGAIN) { /* nothing to read */ @@ -2218,7 +2282,7 @@ apr_status_t h2_session_process(h2_sessi session->iowait); if (status == APR_SUCCESS) { session->wait_us = 0; - dispatch_event(session, H2_SESSION_EV_DATA_READ, 0, NULL); + dispatch_event(session, H2_SESSION_EV_STREAM_CHANGE, 0, NULL); } else if (APR_STATUS_IS_TIMEUP(status)) { /* go back to checking all inputs again */ Index: httpd-2.4.33/modules/http2/h2_session.h =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_session.h 2018-02-10 16:46:12.000000000 +0100 +++ httpd-2.4.33/modules/http2/h2_session.h 2018-10-01 16:58:14.927879652 +0200 @@ -66,10 +66,11 @@ typedef enum { H2_SESSION_EV_PROTO_ERROR, /* protocol error */ H2_SESSION_EV_CONN_TIMEOUT, /* connection timeout */ H2_SESSION_EV_NO_IO, /* nothing has been read or written */ - H2_SESSION_EV_DATA_READ, /* connection data has been read */ + H2_SESSION_EV_FRAME_RCVD, /* a frame has been received */ H2_SESSION_EV_NGH2_DONE, /* nghttp2 wants neither read nor write anything */ H2_SESSION_EV_MPM_STOPPING, /* the process is stopping */ H2_SESSION_EV_PRE_CLOSE, /* connection will close after this */ + H2_SESSION_EV_STREAM_CHANGE, /* a stream (state/input/output) changed */ } h2_session_event_t; typedef struct h2_session { @@ -118,7 +119,9 @@ typedef struct h2_session { apr_size_t max_stream_mem; /* max buffer memory for a single stream */ apr_time_t idle_until; /* Time we shut down due to sheer boredom */ - apr_time_t keep_sync_until; /* Time we sync wait until passing to async mpm */ + apr_time_t idle_sync_until; /* Time we sync wait until keepalive handling kicks in */ + apr_size_t idle_frames; /* number of rcvd frames that kept session in idle state */ + apr_interval_time_t idle_delay; /* Time we delay processing rcvd frames in idle state */ apr_bucket_brigade *bbtmp; /* brigade for keeping temporary data */ struct apr_thread_cond_t *iowait; /* our cond when trywaiting for data */ Index: httpd-2.4.33/modules/http2/h2_version.h =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_version.h 2018-10-01 16:58:14.915879585 +0200 +++ httpd-2.4.33/modules/http2/h2_version.h 2018-10-01 16:58:14.927879652 +0200 @@ -27,7 +27,7 @@ * @macro * Version number of the http2 module as c string */ -#define MOD_HTTP2_VERSION "1.10.20" +#define MOD_HTTP2_VERSION "1.11.0" /** * @macro @@ -35,7 +35,7 @@ * release. This is a 24 bit number with 8 bits for major number, 8 bits * for minor and 8 bits for patch. Version 1.2.3 becomes 0x010203. */ -#define MOD_HTTP2_VERSION_NUM 0x010a14 +#define MOD_HTTP2_VERSION_NUM 0x010b00 #endif /* mod_h2_h2_version_h */ Index: httpd-2.4.33/include/httpd.h =================================================================== --- httpd-2.4.33.orig/include/httpd.h 2018-10-01 16:58:14.847879205 +0200 +++ httpd-2.4.33/include/httpd.h 2018-10-01 16:59:19.076238358 +0200 @@ -568,6 +568,10 @@ AP_DECLARE(const char *) ap_get_server_b ((x) == HTTP_INTERNAL_SERVER_ERROR) || \ ((x) == HTTP_SERVICE_UNAVAILABLE) || \ ((x) == HTTP_NOT_IMPLEMENTED)) + +/** does the status imply header only response (i.e. never w/ a body)? */ +#define AP_STATUS_IS_HEADER_ONLY(x) ((x) == HTTP_NO_CONTENT || \ + (x) == HTTP_NOT_MODIFIED) /** @} */ /**
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