- Add proxy support (#193)

src/main/java/org/gitlab/api/GitlabAPI.java

@@ -7,6 +7,7 @@ import org.gitlab.api.http.Query;
 import org.gitlab.api.models.*;
 
 import java.io.*;
+import java.net.Proxy;
 import java.net.URL;
 import java.net.URLEncoder;
 import java.text.SimpleDateFormat;
@@ -35,6 +36,7 @@ public class GitlabAPI {
     private final TokenType tokenType;
     private AuthMethod authMethod;
     private boolean ignoreCertificateErrors = false;
+    private Proxy proxy;
     private int requestTimeout = 0;
     private String userAgent = GitlabAPI.class.getCanonicalName() + "/" + System.getProperty("java.version");
 
@@ -69,6 +71,11 @@ public class GitlabAPI {
         return this;
     }
 
+    public GitlabAPI proxy(Proxy proxy) {
+        this.proxy = proxy;
+        return this;
+    }
+
     public int getRequestTimeout() {
         return requestTimeout;
     }
@@ -90,6 +97,10 @@ public class GitlabAPI {
         return ignoreCertificateErrors;
     }
 
+    public Proxy getProxy() {
+        return proxy;
+    }
+
     public URL getAPIUrl(String tailAPIUrl) throws IOException {
         if (!tailAPIUrl.startsWith("/")) {
             tailAPIUrl = "/" + tailAPIUrl;

src/main/java/org/gitlab/api/http/GitlabHTTPRequestor.java

@@ -358,7 +358,7 @@ public class GitlabHTTPRequestor {
             url = new URL(urlWithAuth);
         }
 
-        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+        HttpURLConnection connection = root.getProxy() != null ? (HttpURLConnection) url.openConnection(root.getProxy()) : (HttpURLConnection) url.openConnection();
         if (apiToken != null && authMethod == AuthMethod.HEADER) {
             connection.setRequestProperty(tokenType.getTokenHeaderName(), String.format(tokenType.getTokenHeaderFormat(), apiToken));
         }