Changes in 7.66.0 - September 11 2019

Changes:

• CURLINFO_RETRY_AFTER: parse the Retry-After header value
• HTTP3: initial (experimental still not working) support
• curl: --sasl-authzid added to support CURLOPT_SASL_AUTHZID from the tool
• curl: support parallel transfers with -Z
• curl_multi_poll: a sister to curl_multi_wait() that waits more
• sasl: Implement SASL authorisation identity via CURLOPT_SASL_AUTHZID

Bugfixes:

• CVE-2019-5481: FTP-KRB double-free
• CVE-2019-5482: TFTP small blocksize heap buffer overflow
• CI: remove duplicate configure flag for LGTM.com
• CMake: remove needless newlines at end of gss variables
• CMake: use platform dependent name for dlopen() library
• CURLINFO docs: mention that in redirects times are added
• CURLOPT_ALTSVC.3: use a "" filename to not load from a file
• CURLOPT_ALTSVC_CTRL.3: remove CURLALTSVC_ALTUSED
• CURLOPT_HEADERFUNCTION.3: clarify
• CURLOPT_HTTP_VERSION: seting this to 3 forces HTTP/3 use directly
• CURLOPT_READFUNCTION.3: provide inline example
• CURLOPT_SSL_VERIFYHOST: treat the value 1 as 2
• Curl_addr2string: take an addrlen argument too
• Curl_fillreadbuffer: avoid double-free trailer buf on error
• HTTP: use chunked Transfer-Encoding for HTTP_POST if size unknown
• alt-svc: add protocol version selection masking
• alt-svc: fix removal of expired cache entry
• alt-svc: make it use h3-22 with ngtcp2 as well
• alt-svc: more liberal ALPN name parsing
• alt-svc: send Alt-Used: in redirected requests
• alt-svc: with quiche, use the quiche h3 alpn string
• appveyor: pass on -k to make
• asyn-thread: create a socketpair to wait on
• build-openssl: fix build with Visual Studio 2019
• cleanup: move functions out of url.c and make them static
• cleanup: remove the 'numsocks' argument used in many places
• configure: avoid undefined check_for_ca_bundle
• curl.h: add CURL_HTTP_VERSION_3 to the version enum
• curl.h: fix outdated comment
• curl: cap the maximum allowed values for retry time arguments
• curl: handle a libcurl build without netrc support
• curl: make use of CURLINFO_RETRY_AFTER when retrying
• curl: remove outdated comment
• curl: use .curlrc (with a dot) on Windows
• curl: use CURLINFO_PROTOCOL to check for HTTP(s)
• curl_global_init_mem.3: mention it was added in 7.12.0
• curl_version: bump string buffer size to 250
• curl_version_info.3: mentioned ALTSVC and HTTP3
• curl_version_info: offer quic (and h3) library info
• curl_version_info: provide nghttp2 details
• defines: avoid underscore-prefixed defines
• docs/ALTSVC: remove what works and the experimental explanation
• docs/EXPERIMENTAL: explain what it means and what is experimental now
• docs/MANUAL.md: converted to markdown from plain text
• docs/examples/curlx: fix errors
• docs: s/curl_debug/curl_dbg_debug in comments and docs
• easy: resize receive buffer on easy handle reset
• examples: Avoid reserved names in hiperfifo examples
• examples: add http3.c, altsvc.c and http3-present.c
• getenv: support up to 4K environment variable contents on windows
• http09: disable HTTP/0.9 by default in both tool and library
• http2: when marked for closure and wanted to close == OK
• http2_recv: trigger another read when the last data is returned
• http: fix use of credentials from URL when using HTTP proxy
• http_negotiate: improve handling of gss_init_sec_context() failures
• md4: Use our own MD4 when no crypto libraries are available
• multi: call detach_connection before Curl_disconnect
• netrc: make the code try ".netrc" on Windows
• nss: use TLSv1.3 as default if supported
• openssl: build warning free with boringssl
• openssl: use SSL_CTX_set_<min|max>_proto_version() when available
• plan9: add support for running on Plan 9
• progress: reset download/uploaded counter between transfers
• readwrite_data: repair setting the TIMER_STARTTRANSFER stamp
• scp: fix directory name length used in memcpy
• smb: init *msg to NULL in smb_send_and_recv()
• smtp: check for and bail out on too short EHLO response
• source: remove names from source comments
• spnego_sspi: add typecast to fix build warning
• src/makefile: fix uncompressed hugehelp.c generation
• ssh-libssh: do not specify O_APPEND when not in append mode
• ssh: move code into vssh for SSH backends
• sspi: fix memory leaks
• tests: Replace outdated test case numbering documentation
• tftp: return error when packet is too small for options
• timediff: make it 64 bit (if possible) even with 32 bit time_t
• travis: reduce number of torture tests in 'coverage'
• url: make use of new HTTP version if alt-svc has one
• urlapi: verify the IPv6 numerical address
• urldata: avoid 'generic', use dedicated pointers
• vauth: Use CURLE_AUTH_ERROR for auth function errors

Further