Added convenience connector for OkHttp3

Note that the existing one needs to be kept for compatibility with OkHttp2

Author: kohsuke

pom.xml

@@ -144,6 +144,12 @@
       <version>2.7.5</version>
       <optional>true</optional>
     </dependency>
+    <dependency>
+      <groupId>com.squareup.okhttp3</groupId>
+      <artifactId>okhttp-urlconnection</artifactId>
+      <version>3.4.0</version>
+      <optional>true</optional>
+    </dependency>
     <dependency>
       <groupId>org.kohsuke</groupId>
       <artifactId>wordnet-random-name</artifactId>

src/main/java/org/kohsuke/github/extras/OkHttp3Connector.java

@@ -0,0 +1,32 @@
+package org.kohsuke.github.extras;
+
+import okhttp3.OkHttpClient;
+import okhttp3.OkUrlFactory;
+import org.kohsuke.github.HttpConnector;
+
+import java.io.IOException;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+/**
+ * {@link HttpConnector} for {@link OkHttpClient}.
+ *
+ * Unlike {@link #DEFAULT}, OkHttp does response caching.
+ * Making a conditional request against GitHubAPI and receiving a 304
+ * response does not count against the rate limit.
+ * See http://developer.github.com/v3/#conditional-requests
+ *
+ * @author Roberto Tyley
+ * @author Kohsuke Kawaguchi
+ */
+public class OkHttp3Connector implements HttpConnector {
+    private final OkUrlFactory urlFactory;
+
+    public OkHttp3Connector(OkUrlFactory urlFactory) {
+        this.urlFactory = urlFactory;
+    }
+
+    public HttpURLConnection connect(URL url) throws IOException {
+        return urlFactory.open(url);
+    }
+}