Index: wagon-providers/wagon-http-lightweight/src/main/java/org/apache/maven/wagon/providers/http/LightweightHttpWagon.java
===================================================================
--- wagon-providers/wagon-http-lightweight/src/main/java/org/apache/maven/wagon/providers/http/LightweightHttpWagon.java	(revision 919138)
+++ wagon-providers/wagon-http-lightweight/src/main/java/org/apache/maven/wagon/providers/http/LightweightHttpWagon.java	(working copy)
@@ -24,6 +24,7 @@
 import java.net.HttpURLConnection;
 import java.net.MalformedURLException;
 import java.net.PasswordAuthentication;
+import java.net.ProtocolException;
 import java.net.URL;
 import java.net.URLConnection;
 import java.util.List;
@@ -60,6 +61,8 @@
 
     private HttpURLConnection putConnection;
 
+    public static final int maxRedirects = 20;
+
     /**
      * Whether to use any proxy cache or not.
      *
@@ -74,22 +77,34 @@
         try
         {
             URL url = resolveResourceURL( resource );
-            URLConnection urlConnection = url.openConnection();
-            urlConnection.setRequestProperty( "Accept-Encoding", "gzip" );
-            if ( !useCache )
-            {
-                urlConnection.setRequestProperty( "Pragma", "no-cache" );
+            int redirectct = 0;
+            for (; redirectct < maxRedirects; ++redirectct) {
+                URLConnection urlConnection = url.openConnection();
+                urlConnection.setRequestProperty( "Accept-Encoding", "gzip" );
+                if ( !useCache )
+                {
+                    urlConnection.setRequestProperty( "Pragma", "no-cache" );
+                }
+                InputStream is = urlConnection.getInputStream();
+                // handle redirects that the connection refuses to handle,
+                // like http->https or vice versa
+                int status = ((HttpURLConnection) urlConnection).getResponseCode();
+                if (status >= 300 && status < 400 && status != 305) {
+                    url = new URL( url, urlConnection.getHeaderField( "Location" ));
+                    is.close();
+                    continue;
+                }
+                String contentEncoding = urlConnection.getHeaderField( "Content-Encoding" );
+                boolean isGZipped = contentEncoding == null ? false : "gzip".equalsIgnoreCase(contentEncoding);
+                if (isGZipped)
+                {
+                    is = new GZIPInputStream( is );
+                }
+                inputData.setInputStream( is );
+                resource.setLastModified( urlConnection.getLastModified() );
+                resource.setContentLength( urlConnection.getContentLength() );
+                break;
             }
-            InputStream is = urlConnection.getInputStream();
-            String contentEncoding = urlConnection.getHeaderField( "Content-Encoding" );
-            boolean isGZipped = contentEncoding == null ? false : "gzip".equalsIgnoreCase(contentEncoding);
-            if (isGZipped)
-            {
-                is = new GZIPInputStream( is );
-            }
-            inputData.setInputStream( is );
-            resource.setLastModified( urlConnection.getLastModified() );
-            resource.setContentLength( urlConnection.getContentLength() );
         }
         catch ( MalformedURLException e )
         {