# SoapFault exception: [HTTP] Error Fetching http headers in /var/www/app/src/Integrations/SoapClient.php:25

- **ID:** `php/soap-wsdl-http-error`
- **Domain:** php
- **Category:** network_error
- **Verification:** ai_generated
- **Fix Rate:** 78%

## Root Cause

The SOAP client failed to receive HTTP response headers from the remote server, often due to network timeout, proxy misconfiguration, or the server closing the connection prematurely.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| PHP 8.0 | active | — | — |
| PHP 8.1 | active | — | — |
| PHP 8.2 | active | — | — |
| libxml2 2.9 | active | — | — |
| libxml2 2.10 | active | — | — |

## Workarounds

1. **Increase the SOAP client timeout by setting 'connection_timeout' and 'default_socket_timeout' in the stream context: `$context = stream_context_create(['http' => ['timeout' => 30]]); $client = new SoapClient($wsdl, ['stream_context' => $context]);`** (80% success)
   ```
   Increase the SOAP client timeout by setting 'connection_timeout' and 'default_socket_timeout' in the stream context: `$context = stream_context_create(['http' => ['timeout' => 30]]); $client = new SoapClient($wsdl, ['stream_context' => $context]);`
   ```
2. **Configure a proxy in the SOAP client options if behind a corporate firewall: `$client = new SoapClient($wsdl, ['proxy_host' => 'proxy.example.com', 'proxy_port' => 8080]);`** (85% success)
   ```
   Configure a proxy in the SOAP client options if behind a corporate firewall: `$client = new SoapClient($wsdl, ['proxy_host' => 'proxy.example.com', 'proxy_port' => 8080]);`
   ```
3. **Use `file_get_contents()` with a stream context to test basic connectivity to the SOAP endpoint before initializing the client; log the response headers for debugging.** (70% success)
   ```
   Use `file_get_contents()` with a stream context to test basic connectivity to the SOAP endpoint before initializing the client; log the response headers for debugging.
   ```

## Dead Ends

- **** — The SOAP client uses its own timeout settings (default_socket_timeout) which are independent of max_execution_time. (85% fail)
- **** — The error occurs during the actual SOAP call, not during WSDL loading. (75% fail)
- **** — The extension is functional; the issue is external network connectivity. (90% fail)