xrootd/xrootd: v5.6.0

XRootD 5.6.0 is a feature release which includes the following changes: New Features [CMake] Modernization of build system, now requires CMake 3.16 [Client] Add xrdfs cache subcommand to allow for cache evictions [Misc] Add support for building with musl libc (issue #1645) [Python] Modernization of build system, better support for creating binary wheels, properly propagating CXXFLAGS (issues #1768, #1807, #1833, #1844, #2001, #2002) [Python] Better handling of unicode strings in the API (issue #2011) [Server] Add gsi option to display DN when it differs from entity name [Server] Allow generic prepare plug-in to handle large responses (issue #2023) [Server] Allow specfication of minimum and maximum creation mode (issue #649) [Server] Make maxfd be configurable (default is 256k) (issue #2010) [Server] Include token information in the monitoring stream (phase 1). [Xcache] Implement a file evict function [Xcache,XrdCl] Increase default number of parallel event loops to 10 (#2047) [XrdCl] xrdcp: number of parallel copy jobs increased from 4 to 128 [XrdHttp] Allow XRootD to return trailers indicating failure (#1912) [XrdHttp] Denote Accept-Ranges in HEAD response (issue #1889) [XrdHttp] Report cache object age for caching proxy mode (#1919) [XrdPss] Allow origin to be a directory of a locally mounted file system [XrdSciTokens] Implement ability to have the token username as a separate claim (#1978) [XrdSecgsi] Use SHA-256 for signatures, and message digest algorithm (issues #1992, #2030) [XrdSecztn] Allow option '-tokenlib none' to disable token validation (issue #1895) [XrdSecztn] Allow to point to a token file using CGI '?xrd.ztn=tokenfile' (#1926) Major bug fixes [XrdHttp] Fix SEGV in case request has object for opaque data but no content (#2007) [XrdSecgsi] Fix memory leaks in GSI authentication (issue #2021) Minor bug fixes [Server] Use correct value for testing vector size [XrdCl] Fix off by one error in failure recovery check in parallel operation (issue #2040) [XrdCl] Fix potential stream timeout when a new request is sent to an idle stream (issue #2042) [XrdCl] Do not enforce TLS when --notlsok option is used in combination with root:// URL. This allows falling back to e.g. Kerberos authentication on a server with ZTN plugin enabled if the client has no certificates, hence not able to use TLS (issue #2020) [XrdEc] Fix compilation issues and underlinking on macOS [XrdHttp] Fix error returned when a client provides too many range requests (issue #2003) [XrdHttp] Fix regression where performance markers were missing during an HTTP TPC transfer (#2017) [XrdHttp] Return 404 instead of 500 error code on GET request on non-existent file (issue #2018) [XrdHttp] Return 405 instead of 500 error code on deletion of non-empty directory (issue #1896) [XrdHttp] Update HTTP header handling for chunked encoding and status trailer (#2009) [XrdTls] Make sure TLS context is marked invalid if not properly constructed (issue #2020) [XrdTls] Fix build failure with latest glibc (#2012) Miscellaneous [Apps] Make xrdcrc32c consistent with xrdadler32 (issue #2045) [CMake] Build option ENABLE_CRYPTO has been removed. OpenSSL is always required with XRootD 5 (issue #1827) [CMake] New test.cmake script added to automate configure/build/test cycle [CMake] Fix build with link-time optimizations on 32bit systems (issue #2032) [docs] Update READMEs, contribution, installation, and testing documentation [Misc] Fix warnings from Clang compiler (#1997) [Misc] Add sandboxing settings to systemd service files (initially commented out) (issue #2033) [Server] Also check for IPv6 ULA's to determine if an address is private [Tests] New script xrd-docker added to automate running of dockerized tests (#1974) [XProtocol] Add fallthrough statement for ENOTEMPTY errno code mapping [XRootD] Update code to no longer rely on using namespace std; (needed to support C++17) [XrdCeph] Submodule merged back into main repository (#2008) [XrdCeph] Minor build system updates and integration with main repository [XrdCrypto] Switch to a fixed set of DH parameters compatible with older OpenSSL (issue #2014) Full Changelog: https://github.com/xrootd/xrootd/compare/v5.5.5...v5.6.