Bug fixes

• Fix #2157 Ranges that are not in the form 0-n do not work.
• Fix #1777 Windows req/res very slow compared to Linux
• Add CPPHTTPLIB_HEADER_MAX_COUNT

Bug fixes and new features

• Windows ::isdigit compilation error #2135
• Specify version in meson.build #2139
• Detect if afunix.h exists #2145
• Feature request: let the Request& know which route matched #2101
• Feature/multipart headers #2152

Bug fixes

• Add AF_UNIX support on windows #2115
• Support zstd also via pkg-config #2121
• Fix #2113
• Fix "Unbounded Memory Allocation in Chunked/No-Length Requests"

Bug fixes and a new feature

• server_certificate_verifier extended to reuse built-in verifier #2064
• Assertion failed when destroying httplib::Client
  #2068
• Spaces incorrectly allowed in header field names #2096
• build(meson): copy MountTest.MultibytesPathName files #2098
• Remove SSLInit #2102
• Add zstd support #2088
• Question the behavior of method read_content_without_length #2109
• Crash when calling std::exit while server running or client requests in flight #2097

Bug fix and new feature

• Global timeout feature (same as "--max-time" curl option) #2034
• Fix check for URI length to prevent incorrect HTTP 414 errors

Bug fix

• Potential memory corruption in stream_line_reader #2028

v0.18.6

• Resolve #2033

Bug fixes and new feature

• Port/Address re-use #2011
• Invalid Content-Length values should be rejected #2014
• Feature request: ability to check if the connection is still alive #2017

Bug fixes

• Changed to use non-blocking socket in is_ssl_peer_could_be_closed (258992a)
• Treat out-of-range last_pos as the end of the content #2009
• fix:set_file_content with range request return 416. #2010
• Fix HTTP Response Splitting Vulnerability (9c36aae)

Bug fixes

• Regression: Client keep-alive subsequent requests very slow #1997
• 304 Not Modified response stalls until timeout #1998