Bug #76839 [Opn->Csd]: socket_recvfrom may return an invalid 'from' address on MacOS

Edit report at https://bugs.php.net/bug.php?id=76839&edit=1 ID: 76839 Updated by: ab@php.net Reported by: michael at meyer dot io Summary: socket_recvfrom may return an invalid 'from' address on MacOS -Status: Open +Status: Closed Type: Bug Package: Sockets related Operating System: macOS 10.14 PHP Version: 7.2.9 -Assigned To: +Assigned To: ab Block user comment: N Private report: N New Comment: The PR has been merged. Thanks! Previous Comments: ------------------------------------------------------------------------ [2018-09-04 17:43:17] michael at meyer dot io Description: ------------ On MacOS 10.14 w/PHP 7.2.9, socket_recvfrom is returning invalid 'from' addresses which have trailing garbage bytes at the end. This makes it impossible to respond with socket_sendto unless you know what the correct 'from' address should be. I created a pull request for this bug on GitHub: https://github.com/php/php-src/pull/3408 Test script: --------------- <?php for ($i = 0; $i < 10; $i++) { $senderSocketPath = '/tmp/' . substr(md5(rand()), 0, rand(8, 16)) . '.sock'; $senderSocket = socket_create(AF_UNIX, SOCK_DGRAM, 0); socket_bind($senderSocket, $senderSocketPath); $receiverSocketPath = '/tmp/' . substr(md5(rand()), 0, rand(8, 16)) . '.sock'; $receiverSocket = socket_create(AF_UNIX, SOCK_DGRAM, 0); socket_bind($receiverSocket, $receiverSocketPath); // Send message from socket 1 to socket 2 socket_sendto($senderSocket, 'Ping!', 5, 0, $receiverSocketPath); // Receive & respond to message on socket 2 $from = ''; $message = ''; socket_recvfrom($receiverSocket, $message, 65535, 0, $from); echo "Received '$message'\n"; // Respond to the sender using the 'from' address from socket_recvfrom socket_sendto($receiverSocket, 'Pong!', 5, 0, $from); echo "Responded to sender with 'Pong!'\n"; socket_close($receiverSocket); unlink($receiverSocketPath); socket_close($senderSocket); unlink($senderSocketPath); } Expected result: ---------------- Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Actual result: -------------- Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' PHP Warning: socket_sendto(): unable to write to socket [2]: No such file or directory in <test script> on line 22 Warning: socket_sendto(): unable to write to socket [2]: No such file or directory in <test script> on line 22 Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' PHP Warning: socket_sendto(): unable to write to socket [2]: No such file or directory in <test script> on line 22 Warning: socket_sendto(): unable to write to socket [2]: No such file or directory in <test script> on line 22 Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' Received 'Ping!' Responded to sender with 'Pong!' ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=76839&edit=1