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Network connectivity problems can prevent successful API requests.

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Symptoms

  • Error messages like “connection timeout,” “failed to connect,” or “network error”
  • Long delays before errors appear

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Solutions

  1. Check Internet Connection: Ensure your server has a stable internet connection
  2. Verify API Endpoint: Make sure the API endpoint URL is correct 
// In your configuration file (config/llm.php)
return [
    'apiUrl' => 'https://api.openai.com/v1', // Correct URL
];
// @doctest id="9cb3"
  1. Proxy Settings: If you’re behind a proxy, configure it properly
// Using custom HTTP client with proxy settings
use Cognesy\Http\Config\HttpClientConfig;
use Cognesy\Http\Creation\HttpClientBuilder;
use Cognesy\Polyglot\Inference\Inference;
use Cognesy\Polyglot\Inference\InferenceRuntime;
use GuzzleHttp\Client;

$config = new HttpClientConfig(
    requestTimeout: 30,
    connectTimeout: 10,
    driver: 'guzzle',
);

$httpClient = (new HttpClientBuilder())
    ->withConfig($config)
    ->withClientInstance('guzzle', new Client([
        'proxy' => 'http://proxy.example.com:8080',
    ]))
    ->create();
$inference = Inference::fromRuntime(InferenceRuntime::using(
    preset: 'openai',
    httpClient: $httpClient,
));
// @doctest id="4f08"
  1. Firewall Rules: Check if your firewall is blocking outgoing connections to API endpoints
  2. DNS Resolution: Ensure your DNS is resolving the API domains correctly