AbstractFilePart.visitDispositionHeader should honor defined charset, close AsyncHttpClient#738

Author: Stephane Landelle

api/src/main/java/org/asynchttpclient/multipart/AbstractFilePart.java

@@ -69,7 +69,7 @@ protected void visitDispositionHeader(PartVisitor visitor) throws IOException {
         if (fileName != null) {
             visitor.withBytes(FILE_NAME_BYTES);
             visitor.withByte(QUOTE_BYTE);
-            visitor.withBytes(fileName.getBytes(US_ASCII));
+            visitor.withBytes(fileName.getBytes(getCharset() != null ? getCharset() : US_ASCII));
             visitor.withByte(QUOTE_BYTE);
         }
     }