Socket Transports

Socket transport names describe connection mechanisms available to stream socket functions. Common transports include TCP, UDP, Unix sockets, TLS, and SSL compatibility aliases.

Use This Reference When

• Reading a connection string such as tcp://host:port.
• Checking available transports with stream_get_transports().
• Reviewing timeout and TLS requirements for network clients.

List Available Transports

<?php

foreach (stream_get_transports() as $transport) {
    echo $transport . PHP_EOL;
}

// Prints the transports enabled by this PHP build.

Prefer maintained client libraries for application protocols. Raw sockets require careful timeout, TLS, framing, retry, and error handling.