feat: added convenience method for proxy config

Author: quintesse

README.md

@@ -24,9 +24,7 @@ A lightweight HTTP/HTTPS proxy library with pluggable interceptors and full MITM
 HttpProxy proxy = new HttpProxy();
 proxy.start(8080);
 
-HttpClient client = HttpClient.newBuilder()
-    .proxy(ProxySelector.of(new InetSocketAddress("localhost", 8080)))
-    .build();
+HttpClient client = proxy.configureClient(HttpClient.newBuilder()).build();
 
 HttpResponse<String> response = client.send(
     HttpRequest.newBuilder().uri(URI.create("http://example.com")).build(),
@@ -117,8 +115,7 @@ tmf.init(trustStore);
 SSLContext sslContext = SSLContext.getInstance("TLS");
 sslContext.init(null, tmf.getTrustManagers(), null);
 
-HttpClient client = HttpClient.newBuilder()
-    .proxy(ProxySelector.of(new InetSocketAddress("localhost", 8080)))
+HttpClient client = proxy.configureClient(HttpClient.newBuilder())
     .sslContext(sslContext)
     .build();
 ```

src/main/java/org/codejive/tproxy/HttpProxy.java

@@ -1,6 +1,8 @@
 package org.codejive.tproxy;
 
 import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.net.ProxySelector;
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
 import java.net.http.HttpRequest.BodyPublishers;
@@ -282,6 +284,20 @@ public int port() {
         return port;
     }
 
+    /**
+     * Configure an HttpClient.Builder to use this proxy.
+     *
+     * @param builder the HttpClient.Builder to configure
+     * @return the same builder instance for chaining
+     * @throws IllegalStateException if the proxy is not running
+     */
+    public HttpClient.Builder configureClient(HttpClient.Builder builder) {
+        if (!running) {
+            throw new IllegalStateException("Proxy must be running before configuring clients");
+        }
+        return builder.proxy(ProxySelector.of(new InetSocketAddress("localhost", port)));
+    }
+
     private static HttpClient buildHttpClient(SSLContext sslContext) {
         HttpClient.Builder builder =
                 HttpClient.newBuilder()