deal with createInputRaw() casting issue (#3514)

core/src/processing/core/PApplet.java

@@ -6664,18 +6664,21 @@ public class PApplet implements PConstants {
       try {
         URL url = new URL(filename);
         URLConnection conn = url.openConnection();
-        HttpURLConnection httpConn = (HttpURLConnection) conn;
-        // Will not handle a protocol change (see below)
-        httpConn.setInstanceFollowRedirects(true);
-        int response = httpConn.getResponseCode();
-        // Normally will not follow HTTPS redirects from HTTP due to security concerns
-        // http://stackoverflow.com/questions/1884230/java-doesnt-follow-redirect-in-urlconnection/1884427
-        if (response >= 300 && response < 400) {
-          String newLocation = httpConn.getHeaderField("Location");
-          return createInputRaw(newLocation);
+        if (conn instanceof HttpURLConnection) {
+          HttpURLConnection httpConn = (HttpURLConnection) conn;
+          // Will not handle a protocol change (see below)
+          httpConn.setInstanceFollowRedirects(true);
+          int response = httpConn.getResponseCode();
+          // Normally will not follow HTTPS redirects from HTTP due to security concerns
+          // http://stackoverflow.com/questions/1884230/java-doesnt-follow-redirect-in-urlconnection/1884427
+          if (response >= 300 && response < 400) {
+            String newLocation = httpConn.getHeaderField("Location");
+            return createInputRaw(newLocation);
+          }
+          return conn.getInputStream();
+        } else if (conn instanceof JarURLConnection) {
+          return url.openStream();
         }
-        return conn.getInputStream();
-
       } catch (MalformedURLException mfue) {
         // not a url, that's fine
 

core/todo.txt

@@ -4,6 +4,8 @@ X tweak implementation of PVector.heading()
 X   https://github.com/processing/processing/issues/3511
 X make PFont.size protected again
 X   https://github.com/processing/processing/issues/3519
+X fix problem with JAR loading inside createInputRaw()
+o   https://github.com/processing/processing/pull/3514
 
 
 opengl

todo.txt

@@ -5,6 +5,9 @@ X Add message that says it's safe to ignore the tools.jar warning
 X add new lower console/errors icons
 _ don't show display warning when display 1 doesn't exist
 
+_ can't install processing-java into /usr/bin with El Capitan
+_   https://github.com/processing/processing/issues/3497
+
 fixed earlier
 X font fixes for Georgia in the examples
 X contribs listed multiple times
@@ -21,7 +24,7 @@ X   https://github.com/processing/processing/issues/3481
 X   https://github.com/processing/processing/pull/3489
 X include mode imports when rewriting .properties file
 X   https://github.com/processing/processing/pull/3499
-_   https://github.com/processing/processing/issues/3492
+X   https://github.com/processing/processing/issues/3492
 
 
 beta