* @return this CurlRequest instance
     */
    public CurlRequest compression(final String compression) {
        this.compression = compression;
        return this;
    }

    /**
     * Sets the SSL socket factory for secure connections.
     *
     * @param sslSocketFactory the SSL socket factory
     * @return this CurlRequest instance
     */

        final String emptyUrl = "";
        final CurlRequest getRequest = Curl.get(emptyUrl);
        final CurlRequest postRequest = Curl.post(emptyUrl);
        final CurlRequest putRequest = Curl.put(emptyUrl);
        final CurlRequest deleteRequest = Curl.delete(emptyUrl);
        final CurlRequest headRequest = Curl.head(emptyUrl);
        final CurlRequest optionsRequest = Curl.options(emptyUrl);

        // Test RequestProcessor with different encodings
        CurlRequest.RequestProcessor processor1 = new CurlRequest.RequestProcessor("UTF-8", 1024);
        CurlRequest.RequestProcessor processor2 = new CurlRequest.RequestProcessor("ISO-8859-1", 2048);
        CurlRequest.RequestProcessor processor3 = new CurlRequest.RequestProcessor("UTF-16", 512);

        assertNotNull(processor1.getResponse());

     * @return a new CurlRequest object configured with the PUT method and the specified URL
     */
    public static CurlRequest put(final String url) {
        return new CurlRequest(Method.PUT, url);
    }

    /**
     * Creates a new CurlRequest with the DELETE method for the specified URL.
     *
     * @param url the URL to which the DELETE request will be sent

            return null;
        }
    }

    private CurlRequest callProtectedRequest(CurlHelper curlHelper, CurlRequest request) {
        try {
            java.lang.reflect.Method method = CurlHelper.class.getDeclaredMethod("request", CurlRequest.class);
            method.setAccessible(true);
            return (CurlRequest) method.invoke(curlHelper, request);
        } catch (Exception e) {

     * @return the configured CurlRequest
     */
    public CurlRequest post(final String path) {
        return request(Method.POST, path).header("Content-Type", "application/json");
    }

    /**
     * Creates a PUT request for the specified path.
     * @param path the request path
     * @return the configured CurlRequest
     */
    public CurlRequest put(final String path) {

            super.setReadTimeout(timeout);
        }
    }

    /**
     * CurlRequest subclass that overrides only open(URL) to inject a mock connection.
     * This ensures the real connect() code path is exercised (timeout, headers, onConnect, etc.).
     */
    class OpenOverrideCurlRequest extends CurlRequest {
        private final MockConnectionFactory connectionFactory;

            @Override
            public CurlRequest get(final String path) {
                return createCapturingRequest(path);
            }

            @Override
            public CurlRequest post(final String path) {
                return createCapturingRequest(path);
            }

            @Override
            public CurlRequest put(final String path) {

        final Method httpMethod = Method.valueOf(request.getMethod().toUpperCase(Locale.ROOT));
        final CurlRequest curlRequest = ComponentUtil.getCurlHelper().request(httpMethod, path);

        final String contentType = request.getHeader("Content-Type");
        if (StringUtil.isNotEmpty(contentType)) {
            curlRequest.header("Content-Type", contentType);
        }

## Directory Structure

```
curl4j/
├── src/
│   ├── main/java/org/codelibs/curl/
│   │   ├── Curl.java              # Static entry point with factory methods
│   │   ├── CurlRequest.java       # Fluent request builder
│   │   ├── CurlResponse.java      # Response wrapper (implements Closeable)
│   │   ├── CurlException.java     # Unchecked exception for HTTP errors
│   │   └── io/