Properly parse hostname in v2 network status.

CHANGELOG.md

@@ -3,6 +3,8 @@
  * Minor changes
    - Fix a NullPointerException when parsing an invalid crypto block
      starting with "-----END " rather than "-----BEGIN ".
+   - Properly parse an authority's hostname from the "dir-source" line
+     in a v2 network status.
 
 
 # Changes in version 2.9.1 - 2019-11-09

src/main/java/org/torproject/descriptor/impl/RelayNetworkStatusImpl.java

@@ -181,6 +181,7 @@ public class RelayNetworkStatusImpl extends NetworkStatusImpl
       throw new DescriptorParseException("Illegal hostname in '" + line
           + "'.");
     }
+    this.hostname = parts[1];
     this.address = ParseHelper.parseIpv4Address(line, parts[2]);
     this.dirPort = ParseHelper.parsePort(line, parts[3]);
   }

src/test/java/org/torproject/descriptor/impl/RelayNetworkStatusImplTest.java

@@ -60,6 +60,7 @@ public class RelayNetworkStatusImplTest {
         new int[] { 0, statusBytes.length }, null);
     assertEquals(rnsi.getContactLine(),
         "1024R/8D56913D Alex de Joode <adejoode@sabotage.org>");
+    assertEquals("194.109.206.212", rnsi.getHostname());
   }
 }