SSI bug with mutil include?

[Tyler Kovacs]

> I encountered a problem while ssi delegaties back end memcached servers.
> Anybody might had experienced such problem can help me?

I can confirm that the same behavior happens to me.  Unfortunately, I have not
found a solution to the issue.   

dr-dr xp <drdr.xp at ...> writes:

> 
> hi nginx:  please give me some help or hint:  I encountered a problem while
ssi delegaties back end memcached servers. (ssi dispatches each include to a
location with memcache_pass , which takes use of upstream.)
>    ssi file looks like:    <!--# include virtual="/key?db_1" -->     <!--#
include virtual="/key?db_2" -->    <!--# include virtual="/key?db_3"
-->....After request for the url point to the ssi file, there is half of the
chances I cant get any response. Request is blocked for 60 seconds(the epoll
time-out)  ends with nothing. Sometimes I got the right response. the more
include directives there are, the more chances requests are blocked. But if I
add 'wait="yes"' attribute to each include, there will be no problem.I straced
nginx, found that nginx closes the incorrect FD. 43 epoll_wait(8,
> {{EPOLLOUT, {u32=166951744, u64=13826368082478857024}}, {EPOLLOUT,
> {u32=166951824, u64=13826368082478857104}}, {EPOLLOUT, {u32=166951664,
> u64=13826368082478856944}}, {EPOLLOUT, {u32=166951584,
> u64=13826368082478856864}}, {EPOLLOUT, {u32=166951504,
> u64=13826368082478856784}}, {EPOLLOUT, {u32=166951424,
> u64=13826368082478856704}}, {EPOLLOUT, {u32=166951344,
> u64=13826368082478856624}}, {EPOLLOUT, {u32=166951264,
> u64=13826368082478856544}}, {EPOLLOUT, {u32=166951184,
> u64=13826368580695062800}}}, 512, 60000) = 9 44 gettimeofday({1217429875,
344754}, NULL) = 0 45 getsockopt(16, SOL_SOCKET, SO_ERROR, [0], [4]) = 0 46
writev(16, [{"get db_8\r\n", 10}], 1)   = 10 47 getsockopt(15, SOL_SOCKET,
SO_ERROR, [0], [4]) = 0 48 writev(15, [{"get db_7\r\n", 10}], 1)   = 10 49
getsockopt(14, SOL_SOCKET, SO_ERROR, [0], [4]) = 0 50 writev(14, [{"get
db_6\r\n", 10}], 1)   = 10 51 getsockopt(13, SOL_SOCKET, SO_ERROR, [0], [4]) =
0 52 writev(13, [{"get db_5\r\n", 10}], 1)   = 10 53 getsockopt(12, SOL_SOCKET,
SO_ERROR, [0], [4]) = 0 54 writev(12, [{"get db_4\r\n", 10}], 1)   = 10 55
getsockopt(11, SOL_SOCKET, SO_ERROR, [0], [4]) = 0 56 writev(11, [{"get
db_3\r\n", 10}], 1)   = 10 57 getsockopt(10, SOL_SOCKET, SO_ERROR, [0], [4]) =
0 58 writev(10, [{"get db_2\r\n", 10}], 1)   = 10 59 getsockopt(9, SOL_SOCKET,
SO_ERROR, [0], [4]) = 0 60 writev(9, [{"get db_1\r\n", 10}], 1)    = 10 61
recv(6, 0xbfe125db, 1, MSG_PEEK)        = -1 EAGAIN (Resource temporarily
unavailable) 62  63 epoll_wait(8,
> {{EPOLLIN|EPOLLOUT, {u32=166951344, u64=13826368082478856624}},
> {EPOLLIN|EPOLLOUT, {u32=166951424, u64=13826368082478856704}},
> {EPOLLIN|EPOLLOUT, {u32=166951504, u64=13826368082478856784}},
> {EPOLLIN|EPOLLOUT, {u32=166951584, u64=13826368082478856864}},
> {EPOLLIN|EPOLLOUT, {u32=166951664, u64=13826368082478856944}},
> {EPOLLIN|EPOLLOUT, {u32=166951824, u64=13826368082478857104}},
> {EPOLLIN|EPOLLOUT, {u32=166951744, u64=13826368082478857024}}}, 512,
> 59997) = 7 64 gettimeofday({1217429875, 346743}, NULL) = 0 65 recv(10, "VALUE
db_2 0 1\r\n2\r\nEND\r\n", 100, 0) = 24 66 setsockopt(6, SOL_TCP, TCP_NODELAY,
[1], 4) = 0 67 close(9)                                = 0 68 recv(11, "VALUE
db_3 0 1\r\n3\r\nEND\r\n", 100, 0) = 24 69 writev(6,
> [{"HTTP/1.1 200 OK\r\nServer: nginx/0"..., 165}, {"5\r\n", 3},
> {"Var=[", 5}, {"\r\n", 2}, {"1\r\n", 3}, {",", 1}, {"\r\n", 2},
> {"1\r\n", 3}, {"2", 1}, {"\r\n", 2}], 10) = 187 70
close(10)                               = 0 71 recv(12, "VALUE db_4 0
1\r\n4\r\nEND\r\n", 100, 0) = 24 72 writev(6, [{"1\r\n", 3}, {",", 1}, {"\r\n",
2}, {"1\r\n", 3}, {"3", 1}, {"\r\n", 2}], 6) = 12 73
close(11)                               = 0 74 recv(13, "VALUE db_5 0
1\r\n5\r\nEND\r\n", 100, 0) = 24 75 writev(6, [{"1\r\n", 3}, {",", 1}, {"\r\n",
2}, {"1\r\n", 3}, {"4", 1}, {"\r\n", 2}], 6) = 12 76
close(12)                               = 0 77 recv(14, "VALUE db_6 0
1\r\n6\r\nEND\r\n", 100, 0) = 24 78 writev(6, [{"1\r\n", 3}, {",", 1}, {"\r\n",
2}, {"1\r\n", 3}, {"5", 1}, {"\r\n", 2}], 6) = 12 79
close(13)                               = 0 80 recv(15, "VALUE db_7 0
1\r\n7\r\nEND\r\n", 100, 0) = 24 81 writev(6, [{"1\r\n", 3}, {",", 1}, {"\r\n",
2}, {"1\r\n", 3}, {"6", 1}, {"\r\n", 2}], 6) = 12 82
close(14)                               = 0 83 recv(16, "VALUE db_8 0
1\r\n8\r\nEND\r\n", 100, 0) = 24 84 writev(6, [{"1\r\n", 3}, {",", 1}, {"\r\n",
2}, {"1\r\n", 3}, {"7", 1}, {"\r\n", 2}], 6) = 12 85
close(15)                               = 0 86 epoll_wait(8, Anybody might had
experienced such problem can help me? I'll be very appreciated.Is it a known
bug?I am trying to solve this problem, looking for something help through
source-codes.-- 要了几天饱饭就不记得西北风啥味了
>