Bug fixes and improvements

• Fix incorrect handling of Expect: 100-continue
• Peformance improvement by removing tolower function call

Bug fixes

• Windows: simplify conditional compilation and fix call to CreateFileMappingW
• Fix Incorrect usage of urls ending without '/' in static file server (Windows only) #1848
• Header parser incorrectly accepts NUL and CR within header values #1908
• Fix problem with Abstract Namespace Unix Domain
• Fix SIGINT problem in Docker image

New features and Bug fixes

• Changed CPPHTTPLIB_KEEPALIVE_MAX_COUNT to 100
• Add Dockerfile for static file server
• Breaking Change!: get_header_ methods on Request and Response now take…
• Add sleep in handle_EINTR
• Fix #1645
• Fix #1788
• Added set_ipv6_v6only method (#1905)

v0.16.3

• Fixed set_connection_timeout() unexpected results (#1878)
• Fix KeepAliveTest.SSLClientReconnectionPost (#1895)

Some new features

• threadsafe CLOEXEC on platforms that support it
• BoringSSL compatibility fixes (#1892)

v0.16.1

• detail::is_socket_alive() is not work for https connection #1481
• avoid memory leaks if linked with static openssl libs (#1857)
• Allow hex for ipv6 literal addr in redirect (#1859)
• Fix build on Windows with no WINAPI_PARTITION_APP support (#1865)
• test: fix GetRangeWithMaxLongLength on 32 bit machines (#1867)
• Fix build when targeting Windows 7 as platform. (#1869)
• Require a minimum of TLS 1.2 (#1889)

Bug fixes

v0.15.3...v0.16.0

Bug fix

• Breaking change in handling requests with Range in v0.15.1 and v0.15.2 #1772

Bug fix

• Severe directory traversal vulnerability (dotdotslash) #1768

Bug fix

• Malicious requests for many overlapping byte ranges of large files risk OOM #1766