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SSL client

InitPHP\Socket\Client\SSL opens an ssl:// stream. Functionally identical to the TLS client; the URL scheme just affects PHP's default cipher negotiation.

use InitPHP\Socket\Socket;
use InitPHP\Socket\Enum\Transport;

$client = Socket::client(Transport::SSL, 'smtp.gmail.com', 465, timeout: 10.0)
    ->option('verify_peer', false)
    ->option('verify_peer_name', false);

$client->connect();
$client->write("EHLO [127.0.0.1]\r\n");
echo $client->read(1024);
$client->disconnect();

Refer to the TLS client guide for the full option list and error-handling notes — every helper translates directly.

When to pick SSL vs TLS

Stick with Transport::TLS unless a specific server only accepts ssl://. Modern peers negotiate TLS 1.2 / 1.3 either way; the ssl:// scheme is mostly useful for compatibility with legacy endpoints.

To force a specific protocol version, pin it via crypto():

use InitPHP\Socket\Enum\CryptoMethod;

$client->crypto(CryptoMethod::TLSv1_2);