PHP Opc Ua
opcua-client-ext-transport-https · v4.4.x
Docs · Getting started

Installation

Install the package with Composer. Requires opcua-client v4.4 (the version that introduced the transport seam) and ext-curl.

bash terminal 
composer require php-opcua/opcua-client-ext-transport-https

Requirements

  • PHP ≥ 8.2
  • ext-curl — default HTTP backend
  • ext-openssl — inherited from opcua-client for cert / crypto
  • php-opcua/opcua-client ≥ 4.4 — adds createProbe() and isSecureChannelExternal() on ClientTransportInterface, plus the openSecureChannelExternal() branch that skips OPN when the transport provides TLS

Verify

php verify.php 
<?php
require __DIR__ . '/vendor/autoload.php';

use PhpOpcua\Client\ExtTransportHttps\HttpsTransport;
use PhpOpcua\Client\ExtTransportHttps\Encoding\BinaryHttpsEncoding;
use PhpOpcua\Client\ExtTransportHttps\Http\CurlHttpClient;

$transport = new HttpsTransport(
    httpClient: new CurlHttpClient(),
    encoding: new BinaryHttpsEncoding(),
    endpointUrl: 'opc.https://server.example:443/UA/',
);
echo $transport->isConnected() ? 'OK' : 'fail';

Running the integration suite

The integration tests target the opcua-https-binary service from the uanetstandard-test-suite v1.5.0+ docker-compose stack:

bash terminal 
git clone https://github.com/php-opcua/uanetstandard-test-suite.git
cd uanetstandard-test-suite
docker compose up -d opcua-https-binary

The service listens on https://localhost:4852/UA/TestServer with a pre-generated RSA 2048 certificate (CN HttpsBinaryServer, SAN localhost + 127.0.0.1).

HTTPS auth note

UA-.NETStandard filters Anonymous out of HTTPS endpoint policies when mTLS is off, so the integration test connects with Username / Password (admin / admin123 from the suite's seeded users). The channel itself remains SecurityPolicy::None — TLS handles confidentiality. Anonymous over HTTPS requires the server to be configured with mTLS and the client to present a cert via CurlHttpClient(clientCertPath: ..., clientKeyPath: ...).

Next

Last updated · 2026-06-04
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