ID: 32979
User updated by: mjpph at stardust dot fi
Reported By: mjpph at stardust dot fi
Status: Open
Bug Type: Network related
Operating System: Linux (Fedora Core 3)
PHP Version: 5CVS-2005-05-08 (dev)
Assigned To: wez
New Comment:
I also noticed something funny now. If I use 5 second delay on the
stream_select and watch strace directly it doesn't wait at all, it just
loops stream_select() as fast as it can. Also there's no timeout on the
FC3 straces, but there is one timeout before the successful select on
FC2 strace. One can conclude that the SMTP server responds with 5ms+
delay causing stream_select to timeout once before it gets input. It's
like the FC3 script returns from the stream_select() for some reason
with instant timeout and not actually doing the actual select at all.
Previous Comments:
------------------------------------------------------------------------
[2005-05-26 17:30:16] mjpph at stardust dot fi
Also PHP 5.1.0-dev (cli) (built: May 21 2005 21:29:39)
works fine under FC2. It seems this is PHP<>FC3 issue.
Here's strace from the working (FC2) script:
connect(3, {sa_family=AF_INET, sin_port=htons(25),
sin_addr=inet_addr("<HIDDEN>")}, 16) = -1 EINPROGRESS (Operation now in
progress)
select(4, [3], [3], [3], {60, 0}) = 1 (out [3], left {60, 0})
getsockopt(3, SOL_SOCKET, SO_ERROR, [17179869184], [4]) = 0
fcntl(3, F_SETFL, O_RDWR) = 0
select(4, [3], [], [], {0, 5000}) = 0 (Timeout)
select(4, [3], [], [], {0, 5000}) = 1 (in [3], left {0, 4000})
Here's strace from the non-working version (FC3)
connect(3, {sa_family=AF_INET, sin_port=htons(25),
sin_addr=inet_addr("<HIDDEN>")}, 16) = -1 EINPROGRESS (Operation
poll([{fd=3, events=POLLIN|POLLOUT|POLLERR|POLLHUP, revents=POLLOUT}],
1, 60000) = 1
getsockopt(3, SOL_SOCKET, SO_ERROR, "\0\0\0\0", [12884901892]) = 0
fcntl(3, F_SETFL, O_RDWR) = 0
select(4, [3], [], [], {0, 5000}) = 1 (in [3], left {0, 0})
select(4, [3], [], [], {0, 5000}) = 1 (in [3], left {0, 5000})
select(4, [3], [], [], {0, 5000}) = 1 (in [3], left {0, 5000})
select(4, [3], [], [], {0, 5000}) = 1 (in [3], left {0, 5000})
.. to the infinity.
------------------------------------------------------------------------
[2005-05-26 16:56:43] mjpph at stardust dot fi
The latter has actual ip which I intended to not show, but anyway I had
to use actual IP on the other test machine as it doesn't run it's own
SMTP. Using the actual ip instead of the 127.0.0.1 didn't have any
impact on the non-working machines though.
------------------------------------------------------------------------
[2005-05-26 16:54:38] mjpph at stardust dot fi
New info, I was able to get the reproduce code to actually work as it's
intended on a Fedora Core 2 machine with PHP 5.0.0RC3 (cgi) (built: Jun
10 2004 16:56:32). Here's strace of it:
read(3, "<?\n$c = stream_socket_client(\"tc"..., 8192) = 199
read(3, "", 4096) = 0
read(3, "", 8192) = 0
close(3) = 0
munmap(0x2a97e16000, 4096) = 0
socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP) = 3
close(3) = 0
socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3
fcntl(3, F_GETFL) = 0x2 (flags
O_RDWR|O_LARGEFILE)
fcntl(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0
connect(3, {sa_family=AF_INET, sin_port=htons(25),
sin_addr=inet_addr("83.145.20
0.2")}, 16) = -1 EINPROGRESS (Operation now in progress)
select(4, [3], [3], [3], {60, 0}) = 1 (out [3], left {60, 0})
getsockopt(3, SOL_SOCKET, SO_ERROR, [17179869184], [4]) = 0
fcntl(3, F_SETFL, O_RDWR) = 0
select(4, [3], [], [], {0, 5000}) = 0 (Timeout)
select(4, [3], [], [], {0, 5000}) = 1 (in [3], left {0, 5000})
select(4, [3], NULL, NULL, {60, 0}) = 1 (in [3], left {60, 0})
at this point the stream_select returns as intended and script ends.
The reproduce code DOESN'T work with several machines running Fedora
Core 3 by using 5.0.4 as well as with 200505260030 dated snapshot.
stream_select simply doesn't give me anything. Platform is Fedora Core
3 x86_64 under dual xeon 3.2ghz (Nocona, EM64T) with kernel
2.6.11-1.14_FC3smp on the machines that don't return stream_select() as
it should.
------------------------------------------------------------------------
[2005-05-26 16:42:54] mjpph at stardust dot fi
I used the reproduce code to connect to my own SMTP server, which by
using standard socket functions, telnet or any other method instantly
outputs the welcome message when I connect. Just add IP+Port to some
SMTP server and it'll work for the test.
Here's the strace:
read(3, "<?\n$c = stream_socket_client(\"tc"..., 8192) = 220
read(3, "", 4096) = 0
read(3, "", 8192) = 0
close(3) = 0
munmap(0x2aaaad2e0000, 4096) = 0
socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP) = 3
close(3) = 0
socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3
fcntl(3, F_GETFL) = 0x2 (flags
O_RDWR|O_LARGEFILE)
fcntl(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0
connect(3, {sa_family=AF_INET, sin_port=htons(25),
sin_addr=inet_addr("127.0.0.1")}, 16) = -1 EINPROGRESS (Operation now
in progress)
poll([{fd=3, events=POLLIN|POLLOUT|POLLERR|POLLHUP, revents=POLLOUT}],
1, 60000) = 1
getsockopt(3, SOL_SOCKET, SO_ERROR, "\0\0\0\0", [12884901892]) = 0
fcntl(3, F_SETFL, O_RDWR) = 0
select(4, [3], [], [], {0, 5000}) = 1 (in [3], left {0, 1000})
select(4, [3], [], [], {0, 5000}) = 1 (in [3], left {0, 5000})
select(4, [3], [], [], {0, 5000}) = 1 (in [3], left {0, 5000})
select(4, [3], [], [], {0, 5000}) = 1 (in [3], left {0, 5000})
select(4, [3], [], [], {0, 5000}) = 1 (in [3], left {0, 5000})
.. it continues like this until I kill the script. The stream_select()
never returns anything. If I do fgets() instead of the stream_select()
it returns the SMTP welcome instantly.
------------------------------------------------------------------------
[2005-05-26 03:05:44] [EMAIL PROTECTED]
Worked for me just the other week.
You'll need to convince me with a short self-contained test and strace
output to prove it.
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
http://bugs.php.net/32979
--
Edit this bug report at http://bugs.php.net/?id=32979&edit=1
