thanks for the reply Paul. but my problem was not in the wording/english. my doubt was that "what does inside the methods(othe than startAsync, complete) the objects are not thread safe means ? can you tel me a scenario when the request/response objects are accessed by more than 1 thread concurrently ?
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com