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2016-08-05CURLOPT_TCP_NODELAY: now enabled by defaultDaniel Stenberg
After a few wasted hours hunting down the reason for slowness during a TLS handshake that turned out to be because of TCP_NODELAY not being set, I think we have enough motivation to toggle the default for this option. We now enable TCP_NODELAY by default and allow applications to switch it off. This also makes --tcp-nodelay unnecessary, but --no-tcp-nodelay can be used to disable it. Thanks-to: Tim Rühsen Bug: https://curl.haxx.se/mail/lib-2016-06/0143.html
2016-08-04multi: make Curl_expire() work with 0 ms timeoutsDaniel Stenberg
Previously, passing a timeout of zero to Curl_expire() was a magic code for clearing all timeouts for the handle. That is now instead made with the new Curl_expire_clear() function and thus a 0 timeout is fine to set and will trigger a timeout ASAP. This will help removing short delays, in particular notable when doing HTTP/2.
2016-06-22typedefs: use the full structs in internal code...Daniel Stenberg
... and save the typedef'ed names for headers and external APIs.
2016-06-22internals: rename the SessionHandle struct to Curl_easyDaniel Stenberg
2016-05-19http2: use HTTP/2 in the HTTP/1.1-alike headerDaniel Stenberg
... when generating them, not "2.0" as the protocol is called just HTTP/2 and nothing else.
2016-05-12http2: Add space between colon and header valueCory Benfield
curl's representation of HTTP/2 responses involves transforming the response to a format that is similar to HTTP/1.1. Prior to this change, curl would do this by separating header names and values with only a colon, without introducing a space after the colon. While this is technically a valid way to represent a HTTP/1.1 header block, it is much more common to see a space following the colon. This change introduces that space, to ensure that incautious tools are safely able to parse the header block. This also ensures that the difference between the HTTP/1.1 and HTTP/2 response layout is as minimal as possible. Bug: https://github.com/curl/curl/issues/797 Closes #798 Fixes #797
2016-04-29lib: include curl_printf.h as one of the last headersDaniel Stenberg
curl_printf.h defines printf to curl_mprintf, etc. This can cause problems with external headers which may use __attribute__((format(printf, ...))) markers etc. To avoid that they cause problems with system includes, we include curl_printf.h after any system headers. That makes the three last headers to always be, and we keep them in this order: curl_printf.h curl_memory.h memdebug.h None of them include system headers, they all do funny #defines. Reported-by: David Benjamin Fixes #743
2016-04-12http2: Use size_t type for data drain countJay Satiro
Ref: https://github.com/curl/curl/issues/659 Ref: https://github.com/curl/curl/pull/663
2016-04-11http2: Improve header parsingJay Satiro
- Error if a header line is larger than supported. - Warn if cumulative header line length may be larger than supported. - Allow spaces when parsing the path component. - Make sure each header line ends in \r\n. This fixes an out of bounds. - Disallow header continuation lines until we decide what to do. Ref: https://github.com/curl/curl/issues/659 Ref: https://github.com/curl/curl/pull/663
2016-04-11http2: Add Curl_http2_strerror for HTTP/2 error codesJay Satiro
Ref: https://github.com/curl/curl/issues/659 Ref: https://github.com/curl/curl/pull/663
2016-04-11http2: Don't increment drain when one header field is receivedTatsuhiro Tsujikawa
Sicne we write header field in temporary location, not in the memory that upper layer provides, incrementing drain should not happen. Ref: https://github.com/curl/curl/issues/659 Ref: https://github.com/curl/curl/pull/663
2016-04-11http2: Ensure that http2_handle_stream_close is calledTatsuhiro Tsujikawa
This commit ensures that streams which was closed in on_stream_close callback gets passed to http2_handle_stream_close. Previously, this might not happen. To achieve this, we increment drain property to forcibly call recv function for that stream. To more accurately check that we have no pending event before shutting down HTTP/2 session, we sum up drain property into http_conn.drain_total. We only shutdown session if that value is 0. With this commit, when stream was closed before reading response header fields, error code CURLE_HTTP2_STREAM is returned even if HTTP/2 level error is NO_ERROR. This signals the upper layer that stream was closed by error just like TCP connection close in HTTP/1. Ref: https://github.com/curl/curl/issues/659 Ref: https://github.com/curl/curl/pull/663
2016-04-11http2: Process paused data first before tear down http2 sessionTatsuhiro Tsujikawa
This commit ensures that data from network are processed before HTTP/2 session is terminated. This is achieved by pausing nghttp2 whenever different stream than current easy handle receives data. This commit also fixes the bug that sometimes processing hangs when multiple HTTP/2 streams are multiplexed. Ref: https://github.com/curl/curl/issues/659 Ref: https://github.com/curl/curl/pull/663
2016-04-11http2: Check session closure early in http2_recvTatsuhiro Tsujikawa
Ref: https://github.com/curl/curl/issues/659 Ref: https://github.com/curl/curl/pull/663
2016-04-11http2: Add handling stream level errorTatsuhiro Tsujikawa
Previously, when a stream was closed with other than NGHTTP2_NO_ERROR by RST_STREAM, underlying TCP connection was dropped. This is undesirable since there may be other streams multiplexed and they are very much fine. This change introduce new error code CURLE_HTTP2_STREAM, which indicates stream error that only affects the relevant stream, and connection should be kept open. The existing CURLE_HTTP2 means connection error in general. Ref: https://github.com/curl/curl/issues/659 Ref: https://github.com/curl/curl/pull/663
2016-04-11http2: drain the socket better...Daniel Stenberg
... but ignore EAGAIN if the stream has ended so that we don't end up in a loop. This is a follow-up to c8ab613 in order to avoid the problem d261652 was made to fix. Reported-by: Jay Satiro Clues-provided-by: Tatsuhiro Tsujikawa Discussed in #750
2016-04-06HTTP2: Add a space character after the status codeMichael Kaufmann
The space character after the status code is mandatory, even if the reason phrase is empty (see RFC 7230 section 3.1.2) Closes #755
2016-04-05http2: fix connection reuse when PING comes after last DATADaniel Stenberg
It turns out the google GFE HTTP/2 servers send a PING frame immediately after a stream ends and its last DATA has been received by curl. So if we don't drain that from the socket, it makes the socket readable in subsequent checks and libcurl then (wrongly) assumes the connection is dead when trying to reuse the connection. Reported-by: Joonas Kuorilehto Discussed in #750
2016-04-02http2: make use of the nghttp2 error callbackDaniel Stenberg
It offers extra info from nghttp2 in certain error cases. Like for example when trying prior-knowledge http2 on a server that doesn't speak http2 at all. The error message is passed on as a verbose message to libcurl. Discussed in #722 The error callback was added in nghttp2 1.9.0
2016-03-29http2: set correct scheme in handler structs [regression]Daniel Stenberg
Since commit a5aec58 the handler schemes need to match for the connections to be reused and for HTTP/2 multiplexing to work, reusing connections is very important! Closes #736
2016-02-03URLs: change all http:// URLs to https://Daniel Stenberg
2016-01-08http2: handle the received SETTINGS frameDaniel Stenberg
This regression landed in 5778e6f5 and made libcurl not act on received settings and instead stayed with its internal defaults. Bug: http://curl.haxx.se/mail/lib-2016-01/0031.html Reported-by: Bankde
2016-01-08http2: Fix PUSH_PROMISE headers being treated as trailersTatsuhiro Tsujikawa
Discussed in https://github.com/bagder/curl/pull/564
2016-01-06http2: Fix client write for trailers on stream closeJay Satiro
Check that the trailer buffer exists before attempting a client write for trailers on stream close. Refer to comments in https://github.com/bagder/curl/pull/564
2015-12-15http2: Support trailer fieldsTatsuhiro Tsujikawa
This commit adds trailer support in HTTP/2. In HTTP/1.1, chunked encoding must be used to send trialer fields. HTTP/2 deprecated any trandfer-encoding, including chunked. But trailer fields are now always available. Since trailer fields are relatively rare these days (gRPC uses them extensively though), allocating buffer for trailer fields is done when we detect that HEADERS frame containing trailer fields is started. We use Curl_add_buffer_* functions to buffer all trailers, just like we do for regular header fields. And then deliver them when stream is closed. We have to be careful here so that all data are delivered to upper layer before sending trailers to the application. We can deliver trailer field one by one using NGHTTP2_ERR_PAUSE mechanism, but current method is far more simple. Another possibility is use chunked encoding internally for HTTP/2 traffic. I have not tested it, but it could add another overhead. Closes #564
2015-12-08http2: Fix hanging paused streamTatsuhiro Tsujikawa
When NGHTTP2_ERR_PAUSE is returned from data_source_read_callback, we might not process DATA frame fully. Calling nghttp2_session_mem_recv() again will continue to process DATA frame, but if there is no incoming frames, then we have to call it again with 0-length data. Without this, on_stream_close callback will not be called, and stream could be hanged. Bug: http://curl.haxx.se/mail/lib-2015-11/0103.html Reported-by: Francisco Moraes
2015-11-30http2: convert some verbose output into debug-only outputDaniel Stenberg
2015-11-30http2 push: add missing inits of new streamDaniel Stenberg
- set the correct stream_id for pushed streams - init maxdownload and size properly
2015-11-30http2 push: set weight for new streamDaniel Stenberg
give the new stream the old one's stream_weight internally to avoid sending a PRIORITY frame unless asked for it
2015-11-24Revert "cleanup: general removal of TODO (and similar) comments"Daniel Stenberg
This reverts commit 64e959ffe37c436503f9fed1ce2d6ee6ae50bd9a. Feedback-by: Dan Fandrich URL: http://curl.haxx.se/mail/lib-2015-11/0062.html
2015-11-16http2: minor comment typoDaniel Stenberg
2015-11-13cleanup: general removal of TODO (and similar) commentsDaniel Stenberg
They tend to never get updated anyway so they're frequently inaccurate and we never go back to revisit them anyway. We document issues to work on properly in KNOWN_BUGS and TODO instead.
2015-11-10http2: rectify the http2 version #if checkDaniel Stenberg
We need 1.0.0 or later. Also verified by configure.
2015-10-23http2: s/priority/weightDaniel Stenberg
2015-10-23http2: on_frame_recv: trust the conn/data inputDaniel Stenberg
Removed wrong assert()s The 'conn' passed in as userdata can be used and there can be other sessionhandles ('data') than the single one this checked for.
2015-10-23http2: added three stream prio/deps optionsDaniel Stenberg
CURLOPT_STREAM_DEPENDS CURLOPT_STREAM_DEPENDS_E CURLOPT_STREAM_PRIORITY
2015-10-16http2: Don't pass unitialized name+len pairs to nghttp2_submit_requestAnders Bakken
bug introduced by 18691642931e5c7ac8af83ac3a84fbcb36000f96. Closes #493
2015-10-09http2: Fix http2_recv to return -1 if recv returned -1Jay Satiro
If the underlying recv called by http2_recv returns -1 then that is the value http2_recv returns to the caller.
2015-09-27http2: set TCP_NODELAY unconditionallyDaniel Stenberg
For a single-stream download from localhost, we managed to increase transfer speed from 1.6MB/sec to around 400MB/sec, mostly because of this single fix.
2015-09-27http2: avoid superfluous Curl_expire() callsDaniel Stenberg
... only call it when there is data arriving for another handle than the one that is currently driving it. Improves single-stream download performance quite a lot. Thanks-to: Tatsuhiro Tsujikawa Bug: http://curl.haxx.se/mail/lib-2015-09/0097.html
2015-09-13http2: removed unused functionDaniel Stenberg
2015-09-03http2: don't pass on Connection: headersDaniel Stenberg
RFC 7540 section 8.1.2.2 states: "An endpoint MUST NOT generate an HTTP/2 message containing connection-specific header fields; any message containing connection-specific header fields MUST be treated as malformed" Closes #401
2015-08-24http2: remove dead codeDaniel Stenberg
Leftovers from when we removed the private socket hash. Coverity CID 1317365, "Logically dead code"
2015-08-24http2: on_frame_recv: get a proper 'conn' for the debug loggingDaniel Stenberg
"Explicit null dereferenced (FORWARD_NULL)" Coverity CID 1317366
2015-08-11http2: discard frames with no SessionHandleAnders Bakken
Return 0 instead of NGHTTP2_ERR_CALLBACK_FAILURE if we can't locate the SessionHandle. Apparently mod_h2 will sometimes send a frame for a stream_id we're finished with. Use nghttp2_session_get_stream_user_data and nghttp2_session_set_stream_user_data to identify SessionHandles instead of a hash. Closes #372
2015-07-30http: move HTTP/2 cleanup code off http_disconnect()Kamil Dudka
Otherwise it would never be called for an HTTP/2 connection, which has its own disconnect handler. I spotted this while debugging <https://bugzilla.redhat.com/1248389> where the http_disconnect() handler was called on an FTP session handle causing 'dnf' to crash. conn->data->req.protop of type (struct FTP *) was reinterpreted as type (struct HTTP *) which resulted in SIGSEGV in Curl_add_buffer_free() after printing the "Connection cache is full, closing the oldest one." message. A previously working version of libcurl started to crash after it was recompiled with the HTTP/2 support despite the HTTP/2 protocol was not actually used. This commit makes it work again although I suspect the root cause (reinterpreting session handle data of incompatible protocol) still has to be fixed. Otherwise the same will happen when mixing FTP and HTTP/2 connections and exceeding the connection cache limit. Reported-by: Tomas Tomecek Bug: https://bugzilla.redhat.com/1248389
2015-07-23http2: verify success of strchr() in http2_send()Kamil Dudka
Detected by Coverity. Error: NULL_RETURNS: lib/http2.c:1301: returned_null: "strchr" returns null (checked 103 out of 109 times). lib/http2.c:1301: var_assigned: Assigning: "hdbuf" = null return value from "strchr". lib/http2.c:1302: dereference: Incrementing a pointer which might be null: "hdbuf". 1300| 1301| hdbuf = strchr(hdbuf, 0x0a); 1302|-> ++hdbuf; 1303| 1304| authority_idx = 0;
2015-07-21http2: satisfy external references even if http2 is not compiled in.Patrick Monnerat
2015-07-20http2: add stream != NULL checks for reliabilityDaniel Stenberg
They should not trigger, but in case of internal problems we at least avoid crashes this way.
2015-06-24http2: Use nghttp2 library error code for error return valueTatsuhiro Tsujikawa
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