Bug #54896 [Asn]: Connection to localhost doesn't work in Apache SAPI but works in CLI and CGI

Edit report at http://bugs.php.net/bug.php?id=54896&edit=1 ID: 54896 Updated by: cataphract@php.net Reported by: neweracracker at gmail dot com Summary: Connection to localhost doesn't work in Apache SAPI but works in CLI and CGI Status: Assigned Type: Bug Package: Streams related Operating System: Windows 7 PHP Version: 5.3SVN-2011-05-20 (snap) Assigned To: cataphract Block user comment: N Private report: N New Comment: Works here: Script: var_dump(fsockopen("localhost", 9876)); ncat -4 -k -l 9876 -v -v 15:22:42,3106124 httpd.exe 2504 TCP Reconnect 0:0:0:0:0:0:0:1:6660 -> 0:0:0:0:0:0:0:1:9876 SUCCESS Length: 0, seqnum: 0, connid: 0 15:22:42,8106355 httpd.exe 2504 TCP Reconnect 0:0:0:0:0:0:0:1:6660 -> 0:0:0:0:0:0:0:1:9876 SUCCESS Length: 0, seqnum: 0, connid: 0 15:22:42,8210523 httpd.exe 2504 TCP Connect 127.0.0.1:6661 -> 127.0.0.1:9876 SUCCESS Length: 0, mss: 1460, sackopt: 1, tsopt: 0, wsopt: 1, rcvwin: 8192, rcvwinscale: 8, sndwinscale: 8, seqnum: 0, connid: 0 15:22:42,8216731 httpd.exe 2504 TCP Disconnect 127.0.0.1:6661 -> 127.0.0.1:9876 SUCCESS Length: 0, seqnum: 0, connid: 0 So tries IPv6, fails, then tries IPv4. Now with a process listening on IPv6: ncat -6 -k -l 9876 -v -v 15:25:44,6140323 httpd.exe 2504 TCP Accept 0:0:0:0:0:0:0:1:6672 -> 0:0:0:0:0:0:0:1:9876 SUCCESS Length: 0, mss: 1440, sackopt: 1, tsopt: 0, wsopt: 1, rcvwin: 8192, rcvwinscale: 8, sndwinscale: 8, seqnum: 0, connid: 0 15:25:44,6238583 httpd.exe 2504 TCP Disconnect 0:0:0:0:0:0:0:1:6672 -> 0:0:0:0:0:0:0:1:9876 SUCCESS Length: 0, seqnum: 0, connid: 0 Tries with IPv6 and works the first time. As expected. The only normal case when "127.0.0.1" would work but not localhost with a service listening only with IPv4 is if the packet for the initial attempt with IPv6 would get dropped instead of the OS getting a RST packet back rejecting the connection. Previous Comments: ------------------------------------------------------------------------ [2011-06-01 16:15:55] neweracracker at gmail dot com 127.0.0.1 works localhost doesn't ------------------------------------------------------------------------ [2011-06-01 16:04:34] pajoye@php.net And please try it.... that's what has been asked. Asking Gustavo to test again is good but in the end, we like to know that you don't see the problem anymore. ------------------------------------------------------------------------ [2011-06-01 16:03:59] pajoye@php.net Does your example that both 127.0.0.1 and localhost work when only IPv4 is used? ------------------------------------------------------------------------ [2011-06-01 16:02:17] neweracracker at gmail dot com I don't see this problem when apache is listening in ipv6 but I see when only ipv4 is being listened. Please try my mysql example. If this is fixed. then bug #54832 will be fixed as well since mysqlnd uses streams. ------------------------------------------------------------------------ [2011-06-01 15:56:56] pajoye@php.net @neweracracker at gmail dot com He said it cannot reproduce it. Do you still see this problem? ------------------------------------------------------------------------ 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/bug.php?id=54896 -- Edit this bug report at http://bugs.php.net/bug.php?id=54896&edit=1