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Update EsmtpTransport.php for TLS error when in SMTP mode #2

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sebheitzmann
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I thinks that this condition is false. We should not call startTLS if we are not in TLS.
see symfony/symfony#36005

That's my first PR on symfony, so please say me if it's not the right way to do.

I thinks that this condition is false. We should not call startTLS if we are not in TLS.
see symfony/symfony#36005
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symfony-bot bot commented Mar 25, 2020

Thanks for your pull request! We love contributions.

However, this repository is what we call a "subtree split": a read-only copy of one directory of the main Symfony repository. It is used by Composer to allow developers to depend on specific Symfony components.

If you want to contribute, you should instead open a pull request on the main repository:

https://github.com/symfony/symfony

Thank you for your contribution!

PS: if you haven't already, please add tests, and beware that bug fixes should be submitted on the lowest maintained branch where they apply; only features should be submitted against the master branch.

@symfony-bot symfony-bot bot closed this Mar 25, 2020
symfony-splitter pushed a commit that referenced this pull request Jan 29, 2024
…om socket (xdanik)

This PR was merged into the 5.4 branch.

Discussion
----------

[Mailer] Throw `TransportException` when unable to read from socket

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? |no
| Issues        | None
| License       | MIT

We are seeing error `fgets(): SSL: Connection reset by peer` multiple times a day from connection to Office 365 SMTP server (smtp.office365.com:587).
It's certainly related to some kind of timeout as we are sending emails from long running queue dispatcher and error shows up only occasionally and never with the first message. We are not seeing this issue with any other SMTP server, but we have not tested much past smtp.mandrillapp.com and local MailHog.

We have tried adjusting the `$pingThreshold` and `$restartThreshold` options, but without much success (well `$restartThreshold = 1` resolves the issue, but it also forces the transport to close connection after each message).

Stack trace:
```
#0 /var/www/vendor/symfony/mailer/Transport/Smtp/Stream/AbstractStream.php(77): fgets(Resource(stream))
#1 /var/www/vendor/symfony/mailer/Transport/Smtp/SmtpTransport.php(315): Symfony\Component\Mailer\Transport\Smtp\Stream\AbstractStream->readLine()
#2 /var/www/vendor/symfony/mailer/Transport/Smtp/SmtpTransport.php(181): Symfony\Component\Mailer\Transport\Smtp\SmtpTransport->getFullResponse()
#3 /var/www/vendor/symfony/mailer/Transport/Smtp/SmtpTransport.php(140): Symfony\Component\Mailer\Transport\Smtp\SmtpTransport->executeCommand("RSET
", Array(1))
#4 /var/www/vendor/symfony/mailer/Mailer.php(45): Symfony\Component\Mailer\Transport\Smtp\SmtpTransport->send(Object(Symfony\Component\Mime\Email), Null)
#5 (our queue dispatcher): Symfony\Component\Mailer\Mailer->send(Object(Symfony\Component\Mime\Email))
```

App is running on PHP 8.0.28 on Debian Linux x64, Mailer v5.4.22.

I would gladly written some tests for this, but I don't know how to simulate calls to low-level stream functions like fgets.

Commits
-------

44d5b574b6 [Mailer] Throw TransportException when unable to read from socket
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