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Posted to cvs@httpd.apache.org by wr...@apache.org on 2015/07/08 19:38:26 UTC
svn commit: r1689922 - in /httpd/httpd/branches/2.4.x: ./ CHANGES STATUS
modules/filters/mod_reqtimeout.c
Author: wrowe
Date: Wed Jul 8 17:38:26 2015
New Revision: 1689922
URL: http://svn.apache.org/r1689922
Log:
mod_reqtimeout: Don't let pipelining checks and keep-alive times interfere
with the timeouts computed for subsequent requests. PR 56729.
Submitted by: covener, ylavic
Backports: 1621453, 1641376, 1689325
Reviewed by: ylavic, wrowe, covener
Modified:
httpd/httpd/branches/2.4.x/ (props changed)
httpd/httpd/branches/2.4.x/CHANGES
httpd/httpd/branches/2.4.x/STATUS
httpd/httpd/branches/2.4.x/modules/filters/mod_reqtimeout.c
Propchange: httpd/httpd/branches/2.4.x/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Wed Jul 8 17:38:26 2015
@@ -1,3 +1,3 @@
/httpd/httpd/branches/revert-ap-ldap:1150158-1150173
/httpd/httpd/branches/wombat-integration:723609-723841
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407853,1407965,1408093,1408402,1408958,1408961,1409170,1409437,1409726,1409800,1410681,1410954,1411862,1412278,1413732,1414094,1415008,1415023,1415075,1416121,1416150,1416278,1417197,1417529,1418524,1418556,1418648,1418655,1418703,1418721,1418752,1418769,1419084,1419719,1419726,1419755,1419781,1419796,1420120,1420124,1420149,1420184,1420644,1420685-1420686,1420975,1421288,1421323,1421851,1421912,1421953,1422135,1422549,1422594,1422712,1422855,1422937,1422943,1422980,1423353,1423933,1425360,1425771-1425772,1425775,1425777,1425874,1426850,1426975,1427546,1428184,1428280,1428916,1429228,1429559,1429561,1429564,1429582,1430575,1430814,1430869,1433001,1433613,1433682,1433861,1433988,1435178,1435811,1436058,1436401,1439083,1439106,1439114,1439404,1439623,1442309,1442320,1442326,1442412,1442759,1442865,1447993,1448171,1448453,1451478,1451484,1451633,1451849,1451905,1451921,1452128,1452195,1452259,1452281,1452551,1452911,1452949,1452954,1453022,1453574,1453604,1453875-1453876,1453963,145398
1,1454386,1454414-1454415,1454888,1457437,1457450,1457471,1457504,1457520-1457521,1457610,1457995,1458003-1458004,1458020,1458285,1458447,1458456,1462266,1462269,1462643,1463044-1463047,1463052,1463056,1463455,1463736,1463750,1463754,1464675,1464721,1464762,1465115-1465116,1465190,1467765,1468581,1470183,1470679,1470940,1471449,1475878,1476604,1476621,1476642,1476644-1476645,1476652,1476680,1477094,1477530,1478382,1478748,1479117,1479216,1479222,1479411,1479528,1479905,1479966,1480046,1480627,1481197,1481302,1481306,1481396-1481397,1481891,1482041,1482075,1482170,1482555,1482859,1482996,1483005,1483027,1483190,1484343,1484398,1484832,1484910,1484914,1485409,1485668,1486490,1487528,1487530,1488158,1488164,1488296,1488471,1488492,1488644,1490493,1490507,1490550,1490761,1490994,1491155,1491221,1491234,1491458,1491479,1491538,1491564,1491724,1492663,1492710,1492782,1493330,1493921,1493925,1494536,1495501,1496194,1496338,1496429,1496709,1497371,1497588,1498880,1499679,1500323,1500345,150
0362,1500423,1500437,1500483,1500519,1501294,1501369,1501399,1501913,1502665,1502772,1503680,1503866,1503990-1503991,1504276,1506714,1509872,1509983,1510084-1510085,1510098,1510588,1510707,1511093,1513492,1513508,1514039,1514064,1514214-1514215,1514255,1514267,1514617,1515050,1515162,1515403,1515411,1515420,1517025,1517045,1517175,1517366,1517386,1517388,1518265,1518269,1519475,1520368,1520445,1520760,1520908,1521909,1523235,1523239,1523281,1523387,1524101,1524158,1524192,1524368,1524388,1524770,1525276,1525280-1525281,1525931,1526168,1526189,1526647,1526666,1527008,1527220,1527291,1527294-1527295,1527509,1527925-1527926,1528143,1528718,1529014,1529277,1529449,1529559,1529988,1529991,1530793,1531340,1531370,1531505,1531672,1531961-1531962,1532746,1532816,1533065,1533224,1534321,1534754,1534890,1534892,1536310,1537535,1538490,1540051-1540052,1541181,1541270,1541368,1542338,1542379,1542533,1542562,1542615,1543020,1543147,1543149,1543174,1544381,1544774,1544784,1544812,1544820,1545286,
1545292,1545325,1545364,1545408,1545411,1546692-1546693,1546730,1546759-1546760,1546801,1546804-1546805,1546835-1546836,1547845,1550061,1550302,1550307,1551685,1551714,1551802,1552130,1552227,1553204,1553824,1554161,1554168,1554170,1554175-1554176,1554181,1554184,1554188,1554192,1554195,1554276,1554281,1554300-1554301,1554994-1554995,1555240,1555259,1555266,1555423-1555424,1555463-1555464,1555467,1555555,1555569,1556206,1556428,1556911-1556912,1556914,1556937,1557317,1557617,1558483,1559351,1559828,1560367,1560546,1560679,1560689,1560729,1560977,1560979,1561137,1561262,1561385,1561660,1561923,1562472,1563193,1563379,1563381,1563417-1563418,1563420,1564052,1564437,1564475,1564756,1564760,1565081,1565711,1568404,1569615,1570288,1570598,1571369,1572092,1572198,1572543,1572561,1572611,1572630,1572655,1572663,1572668-1572671,1572896,1572905,1572911,1572967,1573224,1573229,1573626,1574151,1575400,1576233,1576741,1578760,1578762,1580568,1583005,1583007-1583008,1583027,1583175,1583191,15840
98,1584430,1584434,1584572,1584653,1584658,1584665,1584703,1584878,1584884,1584896,1585054,1585072,1585090,1585435,1585609,1585824,1585918-1585919,1586745,1586827,1587036,1587040,1587053,1587255,1587594,1587639,1587654,1588054,1588065,1588213,1588427,1588519,1588527,1588704,1588851,1588853,1589413,1590437,1590509,1591143,1591320,1591322,1591328,1591390,1591394,1591401,1591472,1591508,1592032,1592037,1592500,1592511,1592514,1592529,1592615,1592632,1593745,1594625,1594643,1594648,1595305,1595321,1595426,1597182,1597349,1597639,1597642,1598107,1598946,1601076,1601184-1601185,1601274,1601291,1601630,1601919,1601995,1602338,1602989,1603027,1603029,1603122,1603156,1603915,1604382,1604461,1604631,1605207,1605827,1605829,1607960,1608284,1608785,1608999,1609914,1609936,1609938,1610207,1610311,1610353,1610366,1610491,1610652,1611165,1611169,1611244,1611600,1611871,1611978,1612068,1615026,1615289,1617018,1618401,1618541,1619297,1619383,1619444,1619835,1620324,1620461,1620932,1621367,1621372,16
21417,1621453,1621806,1622450,1624234,1624349,1625196,1625952,1626050,1626978,1628104,1628918-1628919,1628924,1628950,1629235,1629239,1629244,1629250,1629372,1629440-1629441,1629485,1629507-1629508,1629519,1629577,1629652,1631885,1632454,1632740,1632742,1633730-1633731,1633793,1634120,1634237,1634425,1634736,1634836,1635510,1635558,1635644-1635645,1635762,1637112,1638072-1638073,1638879,1639614,1640031,1640036,1640040,1640042,1640331,1641077,1641095,1641376,1642484,1642499,1642847,1642868,1643034,1643284,1643537,1643825,1644245,1646282,1646724,1647035,1648201,1648394,1648433,1648719,1648840,1649001,1649043,1649632,1649966,1650047,1650061,1650309-1650310,1650320,1651088,1652829,1652929,1652931,1652955,1652982,1652985,1652989,1653997,1656669,1657256,1657261,1657636,1657638,1657685,1657881,1657897,1658760,1658765,1661067,1661258,1661448,1661464,1661486,1662245-1662246,1663017,1663647,1664071,1664133,1664205,1664299,1665215,1665218,1665625,1665643,1665721,1666297,1666361,1666363,1666468
,1666618,1666998,1667385-1667386,1668532,1668535,1668553,1669130,1669289,1669292,1671364,1671396-1671397,1671918,1672289,1672453,1672466,1672480,1672483,1672564,1672757,1672985,1672989,1673113,1673155,1673455,1673769,1674056,1674542,1674606,1674632,1674697,1675103,1675410,1675533,1676085,1676654,1676842,1677096,1677462,1679032,1679181-1679182,1679192,1679428,1679432,1679470,1679620,1679712,1680276,1680895,1680900,1680942,1681037,1681424,1681440,1681685,1681694,1681795,1682482,1682816,1682819,1682907,1682923,1682937,1682979,1682988,1684057,1685339,1685345,1685347,1685349-1685350,1685650,1685659,1685779,1686085,1688274,1688536,1688538,1689325
Modified: httpd/httpd/branches/2.4.x/CHANGES
URL: http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?rev=1689922&r1=1689921&r2=1689922&view=diff
==============================================================================
--- httpd/httpd/branches/2.4.x/CHANGES [utf-8] (original)
+++ httpd/httpd/branches/2.4.x/CHANGES [utf-8] Wed Jul 8 17:38:26 2015
@@ -8,6 +8,10 @@ Changes with Apache 2.4.16
*) mod_alias: Revert expression parser support for Alias, ScriptAlias
and Redirect due to a regression (introduced in 2.4.13, not released).
+ *) mod_reqtimeout: Don't let pipelining checks and keep-alive times interfere
+ with the timeouts computed for subsequent requests. PR 56729.
+ [Eric Covener, Yann Ylavic]
+
Changes with Apache 2.4.15
*) mod_ext_filter, mod_charset_lite: Avoid inadvertent filtering of protocol
Modified: httpd/httpd/branches/2.4.x/STATUS
URL: http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/STATUS?rev=1689922&r1=1689921&r2=1689922&view=diff
==============================================================================
--- httpd/httpd/branches/2.4.x/STATUS (original)
+++ httpd/httpd/branches/2.4.x/STATUS Wed Jul 8 17:38:26 2015
@@ -114,16 +114,6 @@ PATCHES ACCEPTED TO BACKPORT FROM TRUNK:
2.4.x patch: trunk works (modulo CHANGES)
+1: jailletc36, ylavic, covener
- *) mod_reqtimeout: Don't let pipelining checks and keep-alive times interfere
- with the timeouts computed for subsequent requests. PR 56729.
- trunk patch: http://svn.apache.org/r1621453
- http://svn.apache.org/r1641376
- http://svn.apache.org/r1689325
- 2.4.x patch: trunk works (modulo CHANGES)
- (http://people.apache.org/~ylavic/httpd-2.4.x-reqtimeout_pre_read_request.patch
- for global review)
- +1: ylavic, wrowe, covener
-
PATCHES PROPOSED TO BACKPORT FROM TRUNK:
[ New proposals should be added at the end of the list ]
Modified: httpd/httpd/branches/2.4.x/modules/filters/mod_reqtimeout.c
URL: http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/modules/filters/mod_reqtimeout.c?rev=1689922&r1=1689921&r2=1689922&view=diff
==============================================================================
--- httpd/httpd/branches/2.4.x/modules/filters/mod_reqtimeout.c (original)
+++ httpd/httpd/branches/2.4.x/modules/filters/mod_reqtimeout.c Wed Jul 8 17:38:26 2015
@@ -177,10 +177,27 @@ static apr_status_t reqtimeout_filter(ap
apr_interval_time_t saved_sock_timeout = UNSET;
reqtimeout_con_cfg *ccfg = f->ctx;
+ if (block == APR_NONBLOCK_READ && mode == AP_MODE_SPECULATIVE) {
+ /* The source of these above us in the core is check_pipeline(), which
+ * is between requests but before this filter knows to reset timeouts
+ * during pre_read_request(). If they appear elsewhere, just don't
+ * check or extend the time since they won't block and we'll see the
+ * bytes again later
+ */
+ return ap_get_brigade(f->next, bb, mode, block, readbytes);
+ }
+
if (ccfg->in_keep_alive) {
- /* For this read, the normal keep-alive timeout must be used */
+ /* For this read[_request line()], wait for the first byte using the
+ * normal keep-alive timeout (hence don't take this expected idle time
+ * into account to setup the connection expiry below).
+ */
ccfg->in_keep_alive = 0;
- return ap_get_brigade(f->next, bb, mode, block, readbytes);
+ rv = ap_get_brigade(f->next, bb, AP_MODE_SPECULATIVE, block, 1);
+ if (rv != APR_SUCCESS || APR_BRIGADE_EMPTY(bb)) {
+ return rv;
+ }
+ apr_brigade_cleanup(bb);
}
if (ccfg->new_timeout > 0) {
@@ -301,7 +318,12 @@ static apr_status_t reqtimeout_filter(ap
else {
/* mode != AP_MODE_GETLINE */
rv = ap_get_brigade(f->next, bb, mode, block, readbytes);
- if (ccfg->min_rate > 0 && rv == APR_SUCCESS) {
+ /* Don't extend the timeout in speculative mode, wait for
+ * the real (relevant) bytes to be asked later, within the
+ * currently alloted time.
+ */
+ if (ccfg->min_rate > 0 && rv == APR_SUCCESS
+ && mode != AP_MODE_SPECULATIVE) {
extend_timeout(ccfg, bb);
}
}
@@ -349,11 +371,32 @@ static int reqtimeout_init(conn_rec *c)
ap_set_module_config(c->conn_config, &reqtimeout_module, ccfg);
ap_add_input_filter(reqtimeout_filter_name, ccfg, NULL, c);
}
- else {
- /* subsequent request under event-like MPM */
- memset(ccfg, 0, sizeof(reqtimeout_con_cfg));
+
+ /* we are not handling the connection, we just do initialization */
+ return DECLINED;
+}
+
+static void reqtimeout_before_header(request_rec *r, conn_rec *c)
+{
+ reqtimeout_srv_cfg *cfg;
+ reqtimeout_con_cfg *ccfg =
+ ap_get_module_config(c->conn_config, &reqtimeout_module);
+
+ if (ccfg == NULL) {
+ /* not configured for this connection */
+ return;
}
+ cfg = ap_get_module_config(c->base_server->module_config,
+ &reqtimeout_module);
+ AP_DEBUG_ASSERT(cfg != NULL);
+
+ /* (Re)set the state for this new request, but ccfg->socket and
+ * ccfg->tmpbb which have the lifetime of the connection.
+ */
+ ccfg->timeout_at = 0;
+ ccfg->max_timeout_at = 0;
+ ccfg->in_keep_alive = (c->keepalives > 0);
ccfg->type = "header";
if (cfg->header_timeout != UNSET) {
ccfg->new_timeout = cfg->header_timeout;
@@ -367,12 +410,9 @@ static int reqtimeout_init(conn_rec *c)
ccfg->min_rate = MRT_DEFAULT_HEADER_MIN_RATE;
ccfg->rate_factor = default_header_rate_factor;
}
-
- /* we are not handling the connection, we just do initialization */
- return DECLINED;
}
-static int reqtimeout_after_headers(request_rec *r)
+static int reqtimeout_before_body(request_rec *r)
{
reqtimeout_srv_cfg *cfg;
reqtimeout_con_cfg *ccfg =
@@ -404,41 +444,6 @@ static int reqtimeout_after_headers(requ
return OK;
}
-static int reqtimeout_after_body(request_rec *r)
-{
- reqtimeout_srv_cfg *cfg;
- reqtimeout_con_cfg *ccfg =
- ap_get_module_config(r->connection->conn_config, &reqtimeout_module);
-
- if (ccfg == NULL) {
- /* not configured for this connection */
- return OK;
- }
-
- cfg = ap_get_module_config(r->connection->base_server->module_config,
- &reqtimeout_module);
- AP_DEBUG_ASSERT(cfg != NULL);
-
- ccfg->timeout_at = 0;
- ccfg->max_timeout_at = 0;
- ccfg->in_keep_alive = 1;
- ccfg->type = "header";
- if (ccfg->new_timeout != UNSET) {
- ccfg->new_timeout = cfg->header_timeout;
- ccfg->new_max_timeout = cfg->header_max_timeout;
- ccfg->min_rate = cfg->header_min_rate;
- ccfg->rate_factor = cfg->header_rate_factor;
- }
- else {
- ccfg->new_timeout = MRT_DEFAULT_HEADER_TIMEOUT;
- ccfg->new_max_timeout = MRT_DEFAULT_HEADER_MAX_TIMEOUT;
- ccfg->min_rate = MRT_DEFAULT_HEADER_MIN_RATE;
- ccfg->rate_factor = default_header_rate_factor;
- }
-
- return OK;
-}
-
static void *reqtimeout_create_srv_config(apr_pool_t *p, server_rec *s)
{
reqtimeout_srv_cfg *cfg = apr_pcalloc(p, sizeof(reqtimeout_srv_cfg));
@@ -609,10 +614,10 @@ static void reqtimeout_hooks(apr_pool_t
*/
ap_hook_process_connection(reqtimeout_init, NULL, NULL, APR_HOOK_LAST);
- ap_hook_post_read_request(reqtimeout_after_headers, NULL, NULL,
+ ap_hook_pre_read_request(reqtimeout_before_header, NULL, NULL,
+ APR_HOOK_MIDDLE);
+ ap_hook_post_read_request(reqtimeout_before_body, NULL, NULL,
APR_HOOK_MIDDLE);
- ap_hook_log_transaction(reqtimeout_after_body, NULL, NULL,
- APR_HOOK_MIDDLE);
#if MRT_DEFAULT_HEADER_MIN_RATE > 0
default_header_rate_factor = apr_time_from_sec(1) / MRT_DEFAULT_HEADER_MIN_RATE;
Re: svn commit: r1689922 - in /httpd/httpd/branches/2.4.x: ./ CHANGES STATUS modules/filters/mod_reqtimeout.c
Posted by Eric Covener <co...@gmail.com>.
> Should we do something differently here for event/async MPM? I can't
> think of a good value (min of a few different things?)
Of course this is moot when event is working correctly as the read
shouldn't block.
Re: svn commit: r1689922 - in /httpd/httpd/branches/2.4.x: ./ CHANGES STATUS modules/filters/mod_reqtimeout.c
Posted by Eric Covener <co...@gmail.com>.
> if (ccfg->in_keep_alive) {
> - /* For this read, the normal keep-alive timeout must be used */
> + /* For this read[_request line()], wait for the first byte using the
> + * normal keep-alive timeout (hence don't take this expected idle time
> + * into account to setup the connection expiry below).
> + */
> ccfg->in_keep_alive = 0;
> - return ap_get_brigade(f->next, bb, mode, block, readbytes);
> + rv = ap_get_brigade(f->next, bb, AP_MODE_SPECULATIVE, block, 1);
> + if (rv != APR_SUCCESS || APR_BRIGADE_EMPTY(bb)) {
> + return rv;
> + }
> + apr_brigade_cleanup(bb);
> }
I think this block was already wrong, but this is where svn blame led me
mod_reqtimeout thinks the first post-keepalive read (of the first byte
of the request line) will be using keepalivetimeout, so it doesn't set
its own header read timeout. But under event MPM I think this is
wrong.
1.The current APR socket timeout will not be the keepalive timeout but
"Timeout". The keepalive timeout was only ever used for the event MPM
queues.
2. we've already waited (in pollset/keepalive_q) and there is
allegedly a readable socket, so the quick fix of even explicitly
setting the keepalive timeout here is not right.
Should we do something differently here for event/async MPM? I can't
think of a good value (min of a few different things?)