Check canAuthenticate before beginning to authenticate (#71)

sjamesr · Jan 12, 2018 · c34b4f8 · c34b4f8
1 parent f0f7df3
commit c34b4f8
Showing 1 changed file with 3 additions and 4 deletions.
diff --git a/src/main/java/au/com/southsky/jfreesane/SaneSession.java b/src/main/java/au/com/southsky/jfreesane/SaneSession.java
@@ -346,10 +346,6 @@ void authorize(String resource) throws IOException {
           "Authorization failed - no password provider present "
               + "(you must call setPasswordProvider)");
     }
-    // RPC code FOR SANE_NET_AUTHORIZE
-    outputStream.write(SaneRpcCode.SANE_NET_AUTHORIZE);
-    outputStream.write(resource);
-    outputStream.flush();
 
     if (!passwordProvider.canAuthenticate(resource)) {
       // the password provider has indicated that there's no way it can provide
@@ -361,6 +357,9 @@ void authorize(String resource) throws IOException {
               + "]");
     }
 
+    // RPC code FOR SANE_NET_AUTHORIZE
+    outputStream.write(SaneRpcCode.SANE_NET_AUTHORIZE);
+    outputStream.write(resource);
     outputStream.write(passwordProvider.getUsername(resource));
     writePassword(resource, passwordProvider.getPassword(resource));
     outputStream.flush();