Uncaught Swoole\Error: Socket#41 has already been bound to another coroutine#7, reading of the same socket in coroutine#5

[volodymyr-hordiienko]

Sometimes get this error message, could you help with understanding what can cause this issue? Thanks

PHP Fatal error: Uncaught Swoole\Error: Socket#41 has already been bound to another coroutine#7, reading of the same socket in coroutine#5 at the same time is not allowed in /opt/www/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php:162
Stack trace:
#0 /opt/www/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php(162): fgets()
#1 /opt/www/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(469): Swift_Transport_StreamBuffer->readLine()
#2 /opt/www/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(342): Swift_Transport_AbstractSmtpTransport->getFullResponse()
#3 /opt/www/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/EsmtpTransport.php(305): Swift_Transport_AbstractSmtpTransport->executeCommand()
#4 /opt/www/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(392): Swift_Transport_EsmtpTransport->executeCommand()
#5 /opt/www/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(499): Swift_Transport_AbstractSmtpTransport->doDataCommand()
#6 /opt/www/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(518): Swift_Transport_AbstractSmtpTransport->doMailTransaction()
#7 /opt/www/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(206): Swift_Transport_AbstractSmtpTransport->sendTo()
#8 /opt/www/vendor/hyperf-ext/mail/src/Transport/SmtpTransport.php(99): Swift_Transport_AbstractSmtpTransport->send()
#9 /opt/www/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mailer.php(71): HyperfExt\Mail\Transport\SmtpTransport->send()
#10 /opt/www/vendor/hyperf-ext/mail/src/Mailer.php(269): Swift_Mailer->send()
#11 /opt/www/vendor/hyperf-ext/mail/src/Mailer.php(183): HyperfExt\Mail\Mailer->sendSwiftMessage()
#12 /opt/www/vendor/hyperf-ext/mail/src/Mailable.php(385): HyperfExt\Mail\Mailer->sendNow()
#13 /opt/www/vendor/hyperf-ext/mail/src/QueuedMailableJob.php(32): HyperfExt\Mail\Mailable->send()
#14 /opt/www/vendor/hyperf/async-queue/src/Driver/Driver.php(130): HyperfExt\Mail\QueuedMailableJob->handle()
#15 /opt/www/vendor/hyperf/utils/src/Coroutine/Concurrent.php(80): Hyperf\AsyncQueue\Driver\Driver->Hyperf\AsyncQueue\Driver{closure}()
#16 /opt/www/vendor/hyperf/utils/src/Functions.php(274): Hyperf\Utils\Coroutine\Concurrent->Hyperf\Utils\Coroutine{closure}()
#17 /opt/www/vendor/hyperf/utils/src/Coroutine.php(62): call()
#18 {main}
thrown in /opt/www/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php on line 162

[jenawant]

确实遇到了这个问题，PHP8+Hyperf3.0，请求支援

[buexplain]

这个邮件发送包没有池化底层的socket对象，所以不能被多个协程同时使用。
解决方法是：每次发送邮件都构造一个新的HyperfExt\Mail\Contracts\MailerInterface对象。
具体是代码：

mail/src/MailManager.php

Line 78 in 2c1a54c

public function get(string $name): MailerInterface

改为如下即可：

public function get(string $name): MailerInterface
{
     return $this->resolve($name);
}