[sr-dev] http_async

A few comments: - Add a note about the need to load TLS module first (like I just did in http_client docs) - modparam examples still have “async_http” in the docs - http_set_ssl_cert should have “tls” instead of “ssl”. SSL is bad. - The name of the statistics/counters is not complete in the doc file. Please check - I still think we need to discuss the way you have to run functions to set parameters for a coming function call. That’s new to Kamailio, a big change in how we do things. Usually that is handled by AVPs or XAVPs. We should not add new ways of doing things without discussion - it’s about architecture and will affect all users and how we train people in Kamailio. Personally I don’t like running a “function” that sets options for the next function call to a particular function… What if that function doesn’t happen, will all these values be reset for the next message processed in that process? We’re moving forward! /O