when testing servers, don't propagate exceptions but do note them

desktop/.factorypath

@@ -1,6 +1,9 @@
 <factorypath>
     <factorypathentry kind="VARJAR" id="M2_REPO/net/monarchpass/libpiecannon/0.0.1-SNAPSHOT/libpiecannon-0.0.1-SNAPSHOT.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/com/github/mwiede/jsch/0.1.60/jsch-0.1.60.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/com/google/code/gson/gson/2.8.6/gson-2.8.6.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/org/jodd/jodd-http/6.0.3/jodd-http-6.0.3.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/org/jodd/jodd-util/6.0.0/jodd-util-6.0.0.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/com/google/guava/guava/30.0-jre/guava-30.0-jre.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/com/google/guava/failureaccess/1.0.1/failureaccess-1.0.1.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/com/google/guava/listenablefuture/9999.0-empty-to-avoid-conflict-with-guava/listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar" enabled="true" runInBatchMode="false"/>
@@ -9,6 +12,5 @@
     <factorypathentry kind="VARJAR" id="M2_REPO/com/google/errorprone/error_prone_annotations/2.3.4/error_prone_annotations-2.3.4.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/com/google/j2objc/j2objc-annotations/1.3/j2objc-annotations-1.3.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/net/kothar/xdg-java/0.1.1/xdg-java-0.1.1.jar" enabled="true" runInBatchMode="false"/>
-    <factorypathentry kind="VARJAR" id="M2_REPO/com/google/code/gson/gson/2.8.6/gson-2.8.6.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/org/projectlombok/lombok/1.18.16/lombok-1.18.16.jar" enabled="true" runInBatchMode="false"/>
 </factorypath>

desktop/src/main/java/net/monarchpass/piecannon/App.java

@@ -51,8 +51,16 @@ public class App {
     public static void testServers (final List<Server> servers) {
         log.log(Level.INFO, "Testing all defined servers");
         for (final Server server : servers) {
+            Object result;
+            try {
+                result = PieCannon.testServer(server);
+            }
+            catch (final Exception exception) {
+                result = exception;
+            }
+            
             log.log(Level.INFO, "{0} {1}: {2}", new Object[] {
-                server.getClass().getSimpleName(), server.getLabel(), PieCannon.testServer(server)
+                server.getClass().getSimpleName(), server.getLabel(), result
             });
         }
     }

lib/src/main/java/net/monarchpass/piecannon/PieCannon.java

@@ -10,16 +10,12 @@ import java.io.IOException;
 
 import java.util.List;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.Random;
 
 import com.google.common.base.Charsets;
 import com.google.common.io.CharSource;
 import com.google.common.io.ByteStreams;
 
-import java.util.stream.Collectors;
-
-import com.google.gson.JsonArray;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;

lib/src/main/java/net/monarchpass/piecannon/impl/WebDavServer.java

@@ -6,6 +6,7 @@ import java.net.URI;
 import com.google.common.io.ByteSource;
 
 import jodd.http.HttpRequest;
+import jodd.http.HttpResponse;
 import lombok.Data;
 import net.monarchpass.piecannon.Server;
 
@@ -28,7 +29,11 @@ public class WebDavServer implements Server {
                 request.basicAuthentication(username, password);
             }
             
-            request.send();
+            final HttpResponse response = request.send();
+            if (response.statusCode() >= 400) {
+                throw new RuntimeException(response.statusCode() + ": " + response.statusPhrase());
+            }
+            
             return target;        
         } catch (final IOException exception) {
             throw new RuntimeException(exception);