initialize buffer array

support custom ssl ctx configuration for SSLServer (yhirose#1073)

Fix yhirose#1069 (yhirose#1070)

Split the header only if needed (yhirose#1060)

* Update split.py

* Update split.py

* Update split.py

* Update split.py

Fix "Issue 37742 in oss-fuzz: cpp-httplib:server_fuzzer: Timeout in s…

…erver_fuzzer"

Append '_Online' suffix to Unit test names that access external servers

Allow `LargeRandomData` test only on Windows

Added a test case for yhirose#996

Updated copyright year

Fix virtual call in ClientImpl::~ClientImpl() (yhirose#942)

* Fix virtual call in ClientImpl::~ClientImpl()

This fixes a warning in clang tidy:

> Call to virtual method 'ClientImpl::shutdown_ssl' during
> destruction bypasses virtual dispatch

ClientImpl::~ClientImpl() calls lock_socket_and_shutdown_and_close()
that itself calls shutdown_ssl().  However, shutdown_ssl() is virtual
and C++ does not perform virtual dispatch in destructors, which results
in the wrong overload being called.

This change adds a non-virtual shutdown_ssl_impl() function that is
called from ~SSLClient().  We also inline sock_socket_and_shutdown_and_close()
and removes the virtual call in ~ClientImpl().

* Inline and remove lock_socket_and_shutdown_and_close()

The function only has one caller.