NEWS

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curl 5.3.0

• Workaround for bug in libcurl < 8.8.0, do not use shared connection pool for FTP requests on these libcurl versions.

curl 5.2.3 (2024-09-20)

• Remove some CMD check verbosity per new CRAN rules
• New maintainer email address

curl 5.2.2 (2024-08-26)

• Disable a compression test for libcurl 8.7.1 which has a bug for deflate
• Change a unit test to work around firewall problems on CRANs WinBuilder

curl 5.2.1 (2024-03-01)

• In handle_setheader(), setting a header to a non-empty whitespace string will now send a blank header. Using an empty string will still remove the header altogether (this has not changed).
• Internally simplify handle_setheader() as a wrapper for handle_setopt(httpheader)
• Fix an issue where curl_fetch_stream() might not return all bytes received by the C layer if the server closed the connection mid-response.
• No longer enable CURLOPT_UNRESTRICTED_AUTH by default
• Fix code to build with -DR_NO_REMAP (add all the Rf_ prefixes)

curl 5.2.0 (2023-12-08)

• The CURL_CA_BUNDLE envvar is now also used on non-Windows.
• curl_echo() now uses a random available port to run httpuv
• Add workaround for slowness in curl_echo() on Linux
• Fix a few printf format warnings

curl 5.1.0 (2023-10-02)

• Windows: update to libcurl 8.3.0 + nghttp2 2-1.56 + openssl 3.1.2.

curl 5.0.2 (2023-08-14)

• Fix a unit test for behavioral change in libcurl 8.0.0
• Support seekfunction callback

curl 5.0.1 (2023-06-07)

• Setting verbose=TRUE now prints to R's stderr instead of the process, such that it works better with some GUIs.
• multi_download() now sets mtime for downloaded files from server
• form_file() now supports setting an alternate file name (#290)
• Fix for multi_download() when downloading 0byte files
• Use a self hosted httpbin test server

curl 5.0.0 (2023-01-12)

• New function multi_download() which supports concurrent downloads and resuming download for large files, while giving detailed progress information.
• Windows: updated libcurl to 7.84.0 + nghttp2
• Windows: default to CURLSSLOPT_NATIVE_CA when using openssl unless an ennvar with CURL_CA_BUNDLE is set.
• Use the new optiontype API for type checking if available (libcurl 7.73.0)

curl 4.3.3 (2022-10-06)

• Add support for setting ssl_ctx_function callbacks
• Normalize curlopt_postfields to curlopt_copypostfields to transfer ownership of the input data to libcurl.
• Fix strict-prototype errors

curl 4.3.2 (2021-06-23)

• Windows: update binaries to openssl 1.1.1k and libssh2 1.9.0
• Windows: fix build for experimental ucrt toolchains

curl 4.3.1 (2021-04-30)

• Make tests pass if 'httpuv' is not available (BDR)
• Some cleanup for Windows compilers

curl 4.3 (2019-12-02)

• No longer enable HTTP/2 by default on libcurl < 7.62.0 because some old libcurl versions have annoying HTTP/2 bugs which randomly cause requests to fail. Note that libcurl 7.62 and up always enable HTTP/2 when possible, this doesn't change.
• Add paragraph to intro vignette that explain ENUM options, which are a common source of bugs. Specifically explain CURLOPT_HTTP_VERSION.
• curl::has_internet() now checks that result of nslookup is actually correct. This should detect offline networks with fake internal DNS.
• curl::send_mail() now supports TLS connections, by specifying the smtps:// protocol in the smtp_server argument. The use_ssl argument actually controls whether STARTTLS is enabled; the function documentation has been updated to clarify that, and the default for use_ssl has been changed to "try" (=TRUE).
• Fix build for gcc 10 (-fno-common) requested by CRAN.

curl 4.2 (2019-09-24)

• Fix for old versions of libcurl (build was broken in 4.1 on RHEL / CentOS).
• Add hostname to timeout errors (#190)

curl 4.1 (2019-09-16)

• Fixed typechecking code for new internal macro names in libcurl 7.66
• Rewrite typechecking to work better with clang and old libcurl (#192)
• has_internet() now checks for connectivity via a proxy server if one is detected
• Windows: respect the CURL_SSL_BACKEND variable for people that want to use OpenSSL.
• Windows: respect CURL_CA_BUNDLE if (and only if) CURL_SSL_BACKEND == openssl
• curl_download now writes to a temporary file, which is renamed to the destfile upon success. This prevents corrupt files when a download fails or is interrupted.
• Automatically set forbid_reuse = TRUE in curl_echo() handles
• Update symbol table to 7.66.0

curl 4.0 (2019-07-22)

• Stricter type checking for handle options based on <curl/typecheck-gcc.h> macros
• curl_symbols is now a function instead of a static table to allow easy filtering
• curl_fetch_memory now over-allocates also on unix to avoid many realloc calls
• Re-enable cookie unit test which should be fixed in curl 7.64.0
• Fix encoding of paths for downloading and uploading files (@jennybc, #183)
• Fix LTO declaration warning for R_get_proxy_for_url
• Better support for setting slist (string vector) options such as mail_rcpt
• New send_mail() function to send emails with the libcurl smtp client
• Add function curl_upload() to upload file to FTP or SCP server
• Windows: upgrade to libcurl 7.64.1
• Update symbol data to curl 7.64.1

curl 3.3 (2019-01-10)

• The 'data' callback from multi_add() gains a 'final' parameter
• The 'data' callback from multi_add() can be given a file path to stream to files
• New internal efficient file_writer type used when 'data' callback is a file path
• Progress / Xfer callback functions are now explicitly protected (#157)
• Tweak some unit tests to give less false positives
• curl_echo() has been changed to return better structured output
• Added curl_fetch_echo() as a wrapper for curl_echo()
• Response for curl_fetch_memory() gains a 'type' field with the content-type
• Fix a unit test for OpenSSL 1.1.1
• Better default progress function if no progresfun or xferinfofun is set
• Skip unit tests if no internet is available
• Fix rchk and valgrind warnings from CRAN
• Updated symbol table up with curl 7.64.0
• Use native routine registration and visibility

curl 3.2 (2018-03-28)

• Windows: Update libcurl to 7.59.0
• Update curl_symbols dataset to 7.59.0
• Fix an IDN unit test (malmö.se has messed up their SSL cert)
• Add unit test for multi_fdset
• Add backport of trimws for R 3.1

curl 3.1 (2017-12-12)

• Fix potential memory bug in curl() when doubling the buffer is insufficient.
• Windows: update to libcurl 7.56.1, restore support for libssh2.
• Added unit test for curl_echo() to post large multipart data.
• Fix IDN unit test error "string has forbidden bi-directional properties"

curl 3.0 (2017-10-06)

• MAJOR CHANGE ON WINDOWS: On Windows 7 / 2008-R2 and up we switch from OpenSSL to native Windows SSL (secure channel). Therefore curl now uses certificates from the windows certificate manager. This enables users on corporate/government networks to connect through enterprise proxies and such. On Windows Vista/2008 and older (including CRAN) we still use OpenSSL to guarantee TLS 1.1/1.2 support. Other changes:
• Windows: updated libcurl to v7.56.0 with dual SSL and native IDN/SSPI
• multi_add() and curl_fetch_multi() gain an optional 'data' callback parameter
• New function multi_fdset() returns the file descriptors of a multi pool
• Add CURLOPT_PROXYAUTH = CURLAUTH_ANY to default handle settings

curl 2.8.1 (2017-07-21)

• Windows: switch back to OpenSSL instead of SecureChannel because Windows 2008 (CRAN) does not support TLS 1.1 and TLS 1.2 which is required for many servers now.

curl 2.8

• Windows: EXPERIMENTAL: on R 3.5+ curl now uses SecureChannel instead of OpenSSL for https.
• Windows: updated libcurl to v7.54.1 with native windows IDN. Dropped nghttp2 and rtmp support.
• Windows: nslookup() now uses IdnToAscii() for non-ascii domains
• Add IDN unit tests on supported platforms
• Error messages from libcurl include more detail when available (via CURLOPT_ERRORBUFFER)
• Set a default CURLOPT_READFUNCTION because libcurls default can cause R to freeze
• Fix a bug for empty forms and/or empty form-fields (+ added unit tests for this)
• The 'multi_run()' function gains a parameter 'poll' to return immediately when a request completes.
• Disable 'Expect: 100-continue' for POST requests (deprecated in libcurl)
• Fix two rchk PROTECT warnings (thanks to Tomas Kalibera)

curl 2.7 (2017-06-26)

• New function parse_headers_list() to parse response headers into named list
• nslookup() gains a parameter 'multi' to return multiple matches
• Automatically set 'POSTFIELDSIZE_LARGE' when setting 'POSTFIELDS' or 'COPYPOSTFIELDS' to raw vector
• Do not crash when passing invalid objects as handles
• Workaround for empty forms, i.e. calling handle_setform() with no arguments

curl 2.6 (2017-04-27)

• nslookup() gains a parameter ipv4_only = TRUE (fixes unit test on Mavericks)

curl 2.5 (2017-04-14)

• Add curl_echo() function for easy testing
• Add support for curlopt_xferinfofunction, used in curl_echo()
• Automatically set curlopt_noprogress = 0 when setting one of the progress functions
• Automatically use XFERINFOFUNCTION vs PROGRESSFUNCTION depending on libcurl version
• Default User-Agent is now: options("HTTPUserAgent")
• Requests will now abort if progress/xferinfo callback raises an error
• Open a connection with mode 'f' to skip stop_for_status() during open()

curl 2.4 (2017-03-24)

• Windows: update libcurl to 7.53.1 with libssl 1.0.2k
• New form_data() function to POST form with string/raw values with custom conten-type
• Fix busy waiting for curl_fetch_stream()
• Tweaks for open(con, blocking = FALSE)
• Switch memcpy() to memmove() to please valgrind
• Assert that curl() connection is only opened in read mode

curl 2.3 (2016-11-24)

• All interruptable handles now use a global pool to share connections. Fixes #79.
• Enable interruptable interface by default, even in non-interactive mode.
• Update libcurl on Windows to 7.51.0
• Unit tests now try serveral httpbin mirrors in case one goes down
• Support open(con, blocking = FALSE) and isIncomplete() for curl() connections
• Switch curl_fetch_stream to non-blocking implementation

curl 2.2 (2016-10-21)

• Fixed bug in multi that did not actually enable or disable multiplexing.
• Switch unit tests to HTTP/2 server to get HTTP/2 testing coverage
• Fix big endian build on GLIBC systems (tnx Aurelien Jarno and Andreas Tille)

curl 2.1 (2016-09-22)

• If libcurl >= 7.47 and was built --with-nghttp2, automatically enable HTTP/2 on HTTPS connections (matches behavior of 'curl' cmd util)
• Upgrade to libcurl 7.50.3 (--with-nghttp2) on Windows (Adds HTTP/2 support)
• Fix a unit test that would fail on fast servers

curl 2.0 (2016-09-17)

• New multi interface for concurrent async requests!
• Updated vignette with simple multi examples
• Export handle_data() to get handle state

curl 1.2 (2016-08-13)

• Fix for getaddrinfo GNU extension on some unix platforms

curl 1.1 (2016-07-26)

• Fix ASAN warning in curl.c (reference after free)

curl 1.0 (2016-07-24)

• Fix for FreeBSD
• Simplify handle refCount system
• Better handle locking to prevent using/modifying open handles
• Make unit tests always close connection to prevent 'unused connection' warnings
• Add support for interruptions in curl_download()

curl 0.9.7 (2016-04-10)

• The non-blocking download method is now only used in interactive mode
• Use options(curl_interrupt = TRUE) to force nonblocking in non-interactive mode
• Updated libcurl on windows to 7.47.1. This should fix IPv6 problems.
• Update the curl_symbols table to 7.48

curl 0.9.6 (2016-02-17)

• Use non-blocking code in curl_fetch_memory to support user interruptions.
• Configure script no longer assumes bash so it works on OpenBSD.
• Fix for Snow Leopard CRAN build server.
• Added has_internet() function.

curl 0.9.5 (2016-01-23)

• Added nslookup() as cross-platform alternative to nsl()

curl 0.9.4 (2015-11-20)

• Move the creation of the option table to ./R/options.R
• The curl_options() function gains an argument to filter by name
• Properly invoke winhttp.def file in Makevars.win (required for new toolchain)

curl 0.9.3 (2015-08-25)

• Refactor configure script to use pkg-config
• Use the preprocessor to extract CURLOPT symbols during install
• Don't use setInternet2() in R > 3.2.2

curl 0.9.2 (2015-08-08)

• Optimization for windows to make realloc in curl_fetch_memory faster
• Updated the curl_symbols table to 7.43
• Updated the static libraries on Windows: * libcurl 7.43.0 * openssl 1.0.2d * libssh2 1.6.0 * libiconv 1.14-5 * libidn 1.31-1
• New functions for Windows: ie_proxy_info and ie_get_proxy_for_url

curl 0.9.1 (2015-07-04)

• Convert url argument to utf8 strings in escape/unescape
• Endian fix for BSD systems
• Add support for setting curlopt_xxx_large options

curl 0.9 (2015-06-19)

• Fix for very old versions of libcurl (RHEL 5)
• Do not convert paths to UTF-8 (only URLs)
• Improve error message for unknown options

curl 0.8 (2015-06-06)

• Fix for curl() character reader to invert byte-order on big endian architectures.

curl 0.7 (2015-05-22)

• Rename the C function 'fetch' to 'fetchdata' because of Solaris conflict.
• Move warning about missing CA bundle on Windows to onAttach.

curl 0.6 (2015-05-19)

• Validation of SSL certificates is now enabled by default if a bundle is available.
• Major rewrite to support configurable and reusable handles
• Added new_handle, handle_setopt, handle_setheaders, handle_setform, handle_reset, etc.
• Added curl_fetch interfaces for httr
• Add ie_proxy_settings to get system proxy configuration on windows

curl 0.5 (2015-02-01)

• Check for CURLM_CALL_MULTI_PERFORM to support very old versions of libcurl

curl 0.4 (2015-01-08)

• Fixed a memory bug that could cause R to crash
• Add curl_escape, curl_unescape
• Add curl_version and curl_options

curl 0.3 (2014-12-01)

• Add curl_download function
• More efficient use of realloc
• Fix for older versions of libcurl (e.g. Snow Leopard)
• Add support for user interrupts while downloading (ESC or CTRL+C)
• Fixed bug that caused GC to corrupt connection object
• Refactoring and cleanup

curl 0.2 (2014-11-20)

• add support for recycling connections

curl 0.1

• initial release