Dear all,I'm very glad to finally announce the new release of GNU libmicrohttpd library version 0.9.74.
This release brings a lot of fixes and improvements, and important new features. The most significant addition is the new experimental implementation of WebSockets contributed by David Gausmann. This implementation is not fully tested yet so currently it is disabled by default. Other changes include a lot of improvements and clarifications in doxy comments in microhttpd.h header file, improved compliance with the RFC HTTP specifications, the new implementation of reply header forming, the new implementation of request chunked encoding parsing, new automatic error replies, internal optimisations, and many important fixes, including fixes for long-standing bugs.
More detailed list of notable changes: API changes: + Added new function MHD_get_reason_phrase_len_for(). + Added MHD_CONNECTION_INFO_HTTP_STATUS type of information queried by MHD_get_connection_info(). + Added new response flag MHD_RF_SEND_KEEP_ALIVE_HEADER to force sending of "keep-alive" header even if not required by RFC. + Added new response creation function MHD_create_response_from_buffer_with_free_callback_cls() with custom cleanup callback. + Added new response flag MHD_RF_HTTP_1_0_COMPATIBLE_STRICT with the same functionality as existing MHD_RF_HTTP_VERSION_1_0_ONLY flag. The old flag will be deprecated. + Added new response flag MHD_RF_HTTP_1_0_SERVER with the same functionality as existing MHD_RF_HTTP_VERSION_1_0_RESPONSE flag. The old flag will be deprecated. New features: + Added experimental WebSockets extension with separate header. Disabled by default as it is not fully tested yet. + Added '--enable-sanitizers[=address,undefined,leak,user-poison]' configure parameter (instead of '--enable-sanitizer'), implemented custom memory poisoning for memory pools. Improvements and enhancements: * Doxy function descriptions was corrected, clarified, extended, and improved. Now it should be much easier to learn MHD just by reading the headers. * Completely rewritten reply header forming. New implementation is more robust, simpler maintainable and expandable, and better follows RFC HTTP specifications. * Performance improvements: now HTTP version and request method are decoded one time only (previously MHD used string comparison many times during processing the data). * Rewritten request chunked payload decoding. The new implementation better conforms to the HTTP RFC, detects format problems earlier, replies to the clients with description of detected problems, handles untypical (but syntactically correct) values properly. * Added special replies for wrong/unsupported HTTP versions in requests, broken HTTP chunked encoding in requests, * As required by HTTP RFC, added automatic error replies if client used broken chunked encoding, too large chunk size, too large payload size, or broken Content-Length header. * Optimized connection's memory pool handling. * Changed timeout precision from one second to one millisecond. * Added some checks for incorrect user data, reporting problems in MHD log. * Improved performance of hash calculations functions by using compiler built-ins (if available). * Implemented SHA-1 calculations (required for WebSockets). * Added universal MSVC project that works with any (sufficiently new) version of MSVC. * Developed simple HTTP client to test MHD under very special conditions. * Implemented 45 new tests. * Improved existing tests to test more aspects of MHD. * Added check for correct results of system and libcurl functions. * Response headers are checked during forming of responses. * HTTPS tests were improved. * Added rebuild on W32 of all required files if files are missing. * Many internal optimisations and improvements. Functionality changes: * Keep-alive header is omitted by default for HTTP/1.1 connections. Use of header can be enforced by response flag. * Chunked encoding is used for HTTP/1.1 non-keep-alive connections for responses with unknown size. Previously MHD used "indication of the end of the response by closing connection" in such cases, however it is not correct for HTTP/1.1 connections as per HTTP RFC. * As required by HTTP RFC, use HTTP/1.1 version instead of HTTP/1.0 in reply headers when client is HTTP/1.0 . HTTP/1.0 version can be enforced by response flag. * User response headers are used in replies in the same order as was added by application. * Allowed tab characters in response header values. * All custom "Connection:" response headers are automatically combined into single "Connection:" header. * "keep-alive" token silently dropped from custom "Connection:" response header. "Keep-alive" cannot be enforced and used automatically if possible. * Allow tab character in custom response header value. * Disallow space character in custom response header value. * Do not allow responses with 1xx codes for HTTP/1.0 requests. * Detected and reported incorrect "Upgrade" responses. * W32 targets are changed to Vista+ by default. XP is supported still. Fixes: # Fixed short busy-waiting (up to one second) when connection is going to be expired and closed. # Fixed handling of errors during start of new connection, fixed inability to accept new connections in thread-per-connection mode due to the missing decrement of number of daemon's connections if start of new thread is failed. # Fixed incorrect parsing of LFLF, LFCR, CRCR, and bare CR as single linefeed in request header and request chunked payload. Now only CRLF or bare LF are recognized as linefeed. # Fixed response chunked encoding handling. Now it works properly with non-keep-alive connection, with fixed size replies (if chunked was enforced by header), and in other situations. # Other fixes for chunked replies. # Fixed handling of custom connection timeout in thread-per- connection mode. # Fixed wrongly used MHD_REQUEST_TERMINATED_COMPLETED_OK code for application notification when MHD_REQUEST_TERMINATED_WITH_ERROR code must be used. # Fixed code MHD_REQUEST_TERMINATED_READ_ERROR not reported (code MHD_REQUEST_TERMINATED_WITH_ERROR was incorrectly used instead). # Fixed handling of request chunked encoding with untypical formatting. # Fixed processing of last part of hex-encoded values under certain conditions. # Fixed value returned for MHD_CONNECTION_INFO_REQUEST_HEADER_SIZE. # Fixed returned value for MHD_FEATURE_AUTOSUPPRESS_SIGPIPE on W32, now it is MHD_YES as W32 does not need SIGPIPE suppression. # Fixed portability of bitwise NOT for enums values. # Fixed SHA-256 and MD5 calculations with unaligned data. # Fixed incorrect caseless matching for HTTP version. # Fixed incorrect caseless matching for request method. # Fixed compatibility with old GnuTLS versions. # Fixed compiler warnings on 32-bits platforms. # Fixed blocking sockets setting in tests and examples for W32. # Fixed examples to really use libmagic if present. # HTTPS tests were fixed. # Fixed libcurl test with case-insensitive match for HTTP methods, method names must use case-sensitive match. # Fixed tests compatibility with old libcurl versions. # Fixed build on W32 with llvm-dlltool (this tool is too oversimplified) You can download GNU libmicrohttpd from * https://ftp.gnu.org/gnu/libmicrohttpd/ and all GNU FTP mirrors. * Our git repository at https://gnunet.org/git/libmicrohttpd.git Please report bugs to our bugtracker at https://bugs.gnunet.org/set_project.php?project_id=10. The documentation (including a reference manual and tutorial) can be found at https://gnu.org/s/libmicrohttpd. -- Best Wishes, Evgeny
OpenPGP_signature
Description: OpenPGP digital signature
-- If you have a working or partly working program that you'd like to offer to the GNU project as a GNU package, see https://www.gnu.org/help/evaluation.html.