The server's vendored version of ASIO was upgraded in SPM-4010.

However, we don't use the vendored ASIO for TLS (SSL). Instead, we have a older copied version of ASIO's SSL implementation in-tree, which we have since modified.

This means that when we upgrade the vendored ASIO, we are not upgrading the SSL portions of the code.

There is a correspondence between our in-tree SSL code and the upstream ASIO's, e.g. our mongo/util/net/ssl/stream.hpp and upstream's asio/ssl/stream.hpp.

This Jira issue is to audit whether any of our ASIO-based SSL code would benefit from being brought up to date with the newly upgraded vendored ASIO.

Note that ASIO's SSL code is excluded from third_party/asio, in order to avoid confusion.