SWS-225 in 1.0 branch

Author: poutsma

core/src/main/java/org/springframework/ws/soap/saaj/SaajSoapMessage.java

@@ -195,6 +195,7 @@ public Attachment addAttachment(String contentId, DataHandler dataHandler) {
         Assert.notNull(dataHandler, "dataHandler must not be null");
         AttachmentPart saajAttachment = getImplementation().addAttachmentPart(getSaajMessage(), dataHandler);
         saajAttachment.setContentId(contentId);
+        saajAttachment.setMimeHeader(TransportConstants.HEADER_CONTENT_TRANSFER_ENCODING, "binary");
         return new SaajAttachment(saajAttachment);
     }
 

core/src/main/java/org/springframework/ws/transport/TransportConstants.java

@@ -27,13 +27,15 @@ public interface TransportConstants {
     /** The "Content-Id" header. */
     String HEADER_CONTENT_ID = "Content-Id";
 
-    /** The "Content-Type" header. */
-    String HEADER_CONTENT_TYPE = "Content-Type";
-
     /** The "Content-Length" header. */
     String HEADER_CONTENT_LENGTH = "Content-Length";
 
+    /** The "Content-Transfer-Encoding" header. */
+    String HEADER_CONTENT_TRANSFER_ENCODING = "Content-Transfer-Encoding";
+
+    /** The "Content-Type" header. */
+    String HEADER_CONTENT_TYPE = "Content-Type";
+
     /** The "SOAPAction" header. */
     String HEADER_SOAP_ACTION = "SOAPAction";
-
 }