Localproxy currently works only with OpenSSL 1.0+. I'm not sure if it's only boost, but localproxy is using Boost 1.76 but OpenSSL 3.0 support was added to Boost 1.79, so updating localproxy to use the latest Boost (1.81 at the moment of writing this) could be the one change one change that allows localproxy to work with OpenSSL 3.0.
Describe the issue
Localproxy currently works only with OpenSSL 1.0+. I'm not sure if it's only boost, but localproxy is using Boost 1.76 but OpenSSL 3.0 support was added to Boost 1.79, so updating localproxy to use the latest Boost (1.81 at the moment of writing this) could be the one change one change that allows localproxy to work with OpenSSL 3.0.