StarKnowData
diff --git a/‎src/main/java/org/kohsuke/github/GitHub.java
Copy file name to clipboardExpand all lines: src/main/java/org/kohsuke/github/GitHub.java
+29-1Lines changed: 29 additions & 1 deletion b/‎src/main/java/org/kohsuke/github/GitHub.java
Copy file name to clipboardExpand all lines: src/main/java/org/kohsuke/github/GitHub.java
+29-1Lines changed: 29 additions & 1 deletion
diff --git a/‎src/test/java/org/kohsuke/github/GitHubTest.java
Copy file name to clipboardExpand all lines: src/test/java/org/kohsuke/github/GitHubTest.java
+6-1Lines changed: 6 additions & 1 deletion b/‎src/test/java/org/kohsuke/github/GitHubTest.java
Copy file name to clipboardExpand all lines: src/test/java/org/kohsuke/github/GitHubTest.java
+6-1Lines changed: 6 additions & 1 deletion
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.Reader;
+import java.net.HttpURLConnection;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.text.ParseException;
@@ -482,7 +483,34 @@ void check(String apiUrl) throws IOException {
      * Otherwise this method throws {@link IOException} to indicate the problem.
      */
     public void checkApiUrlValidity() throws IOException {
-        retrieve().to("/", GHApiInfo.class).check(apiUrl);
+        try {
+            retrieve().to("/", GHApiInfo.class).check(apiUrl);
+        } catch (IOException ioe) {
+            if (isPrivateModeEnabled()) {
+                throw new IOException("GitHub Enterprise server (" + apiUrl + ") with private mode enabled");
+            }
+            throw ioe;
+        }
+    }
+
+    /**
+     * Ensures if a GitHub Enterprise server is configured in private mode.
+     *
+     * @return {@code true} if private mode is enabled. If it tries to use this method with GitHub, returns {@code
+     * false}.
+     */
+    private boolean isPrivateModeEnabled() {
+        try {
+            HttpURLConnection connect = getConnector().connect(getApiURL("/"));
+            if (connect.getResponseCode() == HttpURLConnection.HTTP_UNAUTHORIZED
+                    && connect.getHeaderField("Server") != null
+                    && connect.getHeaderField("Server").equals("GitHub.com")) {
+                return true;
+            }
+            return false;
+        } catch (IOException e) {
+            return false;
+        }
     }
 
     /**
 
@@ -124,6 +124,11 @@ public void testGitHubEnterpriseDoesNotHaveRateLimit() throws IOException {
     @Test
     public void testGitHubIsApiUrlValid() throws IOException {
         GitHub github = GitHub.connectAnonymously();
-        github.checkApiUrlValidity();
+        //GitHub github = GitHub.connectToEnterpriseAnonymously("https://github.mycompany.com/api/v3/");
+        try {
+            github.checkApiUrlValidity();
+        } catch (IOException ioe) {
+            assertTrue(ioe.getMessage().contains("private mode enabled"));
+        }
     }
 }
Original file line number	Diff line number	Diff line change
`@@ -124,6 +124,11 @@ public void testGitHubEnterpriseDoesNotHaveRateLimit() throws IOException {`
`124`	`124`	`@Test`
`125`	`125`	`public void testGitHubIsApiUrlValid() throws IOException {`
`126`	`126`	`GitHub github = GitHub.connectAnonymously();`
`127`		`- github.checkApiUrlValidity();`
	`127`	`+ //GitHub github = GitHub.connectToEnterpriseAnonymously("https://github.mycompany.com/api/v3/");`
	`128`	`+ try {`
	`129`	`+ github.checkApiUrlValidity();`
	`130`	`+ } catch (IOException ioe) {`
	`131`	`+ assertTrue(ioe.getMessage().contains("private mode enabled"));`
	`132`	`+ }`
`128`	`133`	`}`
`129`	`134`	`}`