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As soon as a TLS backend gets ALPN conformation about the specific HTTP
version it can now set the multiplex situation for the "bundle" and
trigger moving potentially queued up transfers to the CONNECT state.
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With transfers being queued up, we only move one at a a time back to the
CONNECT state but now we mark moved transfers so that when a moved
transfer is confirmed "successful" (it connected) it will trigger the
move of another pending transfer. Previously, it would otherwise wait
until the transfer was done before doing this. This makes queued up
pending transfers get processed (much) faster.
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The list of names must be in sync with the defined states in the header
file!
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Remove the code too. The functionality has been disabled in code since
7.62.0. Setting this option will from now on simply be ignored and have
no function.
Closes #3654
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Fixes #3745
Closes #3746
The following snippet
```
int main()
{
CURL* hCurlHandle = curl_easy_init();
curl_easy_setopt(hCurlHandle, CURLOPT_URL, "http://example.com");
curl_easy_setopt(hCurlHandle, CURLOPT_PROXY, "1");
curl_easy_perform(hCurlHandle);
curl_easy_cleanup(hCurlHandle);
return 0;
}
```
triggers the following Valgrind warning
```
==4125== Invalid read of size 8
==4125== at 0x4E7D1EE: Curl_llist_remove (llist.c:97)
==4125== by 0x4E7EF5C: detach_connnection (multi.c:798)
==4125== by 0x4E80545: multi_runsingle (multi.c:1451)
==4125== by 0x4E8197C: curl_multi_perform (multi.c:2072)
==4125== by 0x4E766A0: easy_transfer (easy.c:625)
==4125== by 0x4E76915: easy_perform (easy.c:719)
==4125== by 0x4E7697C: curl_easy_perform (easy.c:738)
==4125== by 0x4008BE: main (in /home/even/curl/test)
==4125== Address 0x9b3d1d0 is 1,120 bytes inside a block of size 1,600 free'd
==4125== at 0x4C2ECF0: free (vg_replace_malloc.c:530)
==4125== by 0x4E62C36: conn_free (url.c:756)
==4125== by 0x4E62D34: Curl_disconnect (url.c:818)
==4125== by 0x4E48DF9: Curl_once_resolved (hostip.c:1097)
==4125== by 0x4E8052D: multi_runsingle (multi.c:1446)
==4125== by 0x4E8197C: curl_multi_perform (multi.c:2072)
==4125== by 0x4E766A0: easy_transfer (easy.c:625)
==4125== by 0x4E76915: easy_perform (easy.c:719)
==4125== by 0x4E7697C: curl_easy_perform (easy.c:738)
==4125== by 0x4008BE: main (in /home/even/curl/test)
==4125== Block was alloc'd at
==4125== at 0x4C2F988: calloc (vg_replace_malloc.c:711)
==4125== by 0x4E6438E: allocate_conn (url.c:1654)
==4125== by 0x4E685B4: create_conn (url.c:3496)
==4125== by 0x4E6968F: Curl_connect (url.c:4023)
==4125== by 0x4E802E7: multi_runsingle (multi.c:1368)
==4125== by 0x4E8197C: curl_multi_perform (multi.c:2072)
==4125== by 0x4E766A0: easy_transfer (easy.c:625)
==4125== by 0x4E76915: easy_perform (easy.c:719)
==4125== by 0x4E7697C: curl_easy_perform (easy.c:738)
==4125== by 0x4008BE: main (in /home/even/curl/test)
```
This has been bisected to commit 2f44e94
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14109
Credit to OSS Fuzz
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As previously planned and documented in DEPRECATE.md, all pipelining
code is removed.
Closes #3651
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Make sure to downgrade to 1.1 even when we get this HTTP/2 stream error
on first flight.
Reported-by: niner on github
Fixes #3696
Closes #3707
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* Adjusted unit tests 2056, 2057
* do not generally close connections with CURLAUTH_NEGOTIATE after every request
* moved negotiatedata from UrlState to connectdata
* Added stream rewind logic for CURLAUTH_NEGOTIATE
* introduced negotiatedata::GSS_AUTHDONE and negotiatedata::GSS_AUTHSUCC
* Consider authproblem state for CURLAUTH_NEGOTIATE
* Consider reuse_forbid for CURLAUTH_NEGOTIATE
* moved and adjusted negotiate authentication state handling from
output_auth_headers into Curl_output_negotiate
* Curl_output_negotiate: ensure auth done is always set
* Curl_output_negotiate: Set auth done also if result code is
GSS_S_CONTINUE_NEEDED/SEC_I_CONTINUE_NEEDED as this result code may
also indicate the last challenge request (only works with disabled
Expect: 100-continue and CURLOPT_KEEP_SENDING_ON_ERROR -> 1)
* Consider "Persistent-Auth" header, detect if not present;
Reset/Cleanup negotiate after authentication if no persistent
authentication
* apply changes introduced with #2546 for negotiate rewind logic
Fixes #1261
Closes #1975
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This code was once used for the non multi-interface using code path, but
ever since easy_perform was turned into a wrapper around the multi
interface, this code path never runs.
Closes #3666
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- Change closure handle to receive verbose setting from the easy handle
most recently added via curl_multi_add_handle.
The closure handle is a special easy handle used for closing cached
connections. It receives limited settings from the easy handle most
recently added to the multi handle. Prior to this change that did not
include verbose which was a problem because on connection shutdown
verbose mode was not acknowledged.
Ref: https://github.com/curl/curl/pull/3598
Co-authored-by: Daniel Stenberg
Closes https://github.com/curl/curl/pull/3618
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Introduced in 8b6314ccfb, but not used anymore in current code. Unclear
since when.
Closes #3626
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Failing to do so would make the CURLINFO_TOTAL_TIME timeout to not get
updated correctly and could end up getting reported to the application
completely wrong (way too small).
Reported-by: accountantM on github
Fixes #3602
Closes #3605
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The variable wasn't properly reset within the loop and thus could remain
set for sockets that hadn't been set before and miss notifying the app.
This is a follow-up to 4c35574 (shipped in curl 7.64.0)
Reported-by: buzo-ffm on github
Detected-by: Jan Alexander Steffens
Fixes #3585
Closes #3589
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Mostly a false positive, but this makes the code easier to read anyway.
Detected by scan-build.
Closes #3563
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Closes #3557
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Reported-by: James Brown
Bug: https://curl.haxx.se/mail/archive-2019-02/0013.html
Closes #3558
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... and added braces to two function calls which fixes warnings if they
are replace by empty macros at build-time.
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urlapi: turn three local-only functions into statics
conncache: make conncache_find_first_connection static
multi: make detach_connnection static
connect: make getaddressinfo static
curl_ntlm_core: make hmac_md5 static
http2: make two functions static
http: make http_setup_conn static
connect: make tcpnodelay static
tests: make UNITTEST a thing to mark functions with, so they can be static for
normal builds and non-static for unit test builds
... and mark Curl_shuffle_addr accordingly.
url: make up_free static
setopt: make vsetopt static
curl_endian: make write32_le static
rtsp: make rtsp_connisdead static
warnless: remove unused functions
memdebug: remove one unused function, made another static
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To make sure Curl_timeleft() also thinks the timeout has been reached
when one of the EXPIRE_*TIMEOUTs expires.
Bug: https://curl.haxx.se/mail/lib-2019-01/0073.html
Reported-by: Zhao Yisha
Closes #3501
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Found by scan-build. Follow-up to 4c35574bb785ce.
Closes #3471
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We use "conn" everywhere to be a pointer to the connection.
Introduces two functions that "attaches" and "detaches" the connection
to and from the transfer.
Going forward, we should favour using "data->conn" (since a transfer
always only has a single connection or none at all) to "conn->data"
(since a connection can have none, one or many transfers associated with
it and updating conn->data to be correct is error prone and a frequent
reason for internal issues).
Closes #3442
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Fixes #3436
Closes #3448
Problem 1
After LOTS of scratching my head, I eventually realized that even when doing
10 uploads in parallel, sometimes the socket callback to the application that
tells it what to wait for on the socket, looked like it would reflect the
status of just the single transfer that just changed state.
Digging into the code revealed that this was indeed the truth. When multiple
transfers are using the same connection, the application did not correctly get
the *combined* flags for all transfers which then could make it switch to READ
(only) when in fact most transfers wanted to get told when the socket was
WRITEABLE.
Problem 1b
A separate but related regression had also been introduced by me when I
cleared connection/transfer association better a while ago, as now the logic
couldn't find the connection and see if that was marked as used by more
transfers and then it would also prematurely remove the socket from the socket
hash table even in times other transfers were still using it!
Fix 1
Make sure that each socket stored in the socket hash has a "combined" action
field of what to ask the application to wait for, that is potentially the ORed
action of multiple parallel transfers. And remove that socket hash entry only
if there are no transfers left using it.
Problem 2
The socket hash entry stored an association to a single transfer using that
socket - and when curl_multi_socket_action() was called to tell libcurl about
activities on that specific socket only that transfer was "handled".
This was WRONG, as a single socket/connection can be used by numerous parallel
transfers and not necessarily a single one.
Fix 2
We now store a list of handles in the socket hashtable entry and when libcurl
is told there's traffic for a particular socket, it now iterates over all
known transfers using that single socket.
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Added Curl_resolver_kill() for all three resolver modes, which only
blocks when necessary, along with test 1592 to confirm
curl_multi_remove_handle() doesn't block unless it must.
Closes #3428
Fixes #3371
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Do not assume/store assocation between a given easy handle and the
connection if it can be avoided.
Long-term, the 'conn->data' pointer should probably be removed as it is a
little too error-prone. Still used very widely though.
Reported-by: masbug on github
Fixes #3391
Closes #3400
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The time_t type is unsigned on some systems and these variables are used
to hold return values from functions that return timediff_t
already. timediff_t is always a signed type.
Closes #3363
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This is a companion patch to cbea2fd2c (NTLM: force the connection to
HTTP/1.1, 2018-12-06): with NTLM, we can switch to HTTP/1.1
preemptively. However, with other (Negotiate) authentication it is not
clear to this developer whether there is a way to make it work with
HTTP/2, so let's try HTTP/2 first and fall back in case we encounter the
error HTTP_1_1_REQUIRED.
Note: we will still keep the NTLM workaround, as it avoids an extra
round trip.
Daniel Stenberg helped a lot with this patch, in particular by
suggesting to introduce the Curl_h2_http_1_1_error() function.
Closes #3349
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
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curl_multi_wait() was erroneously used from within
curl_easy_perform(). It could lead to it believing there was no socket
to wait for and then instead sleep for a while instead of monitoring the
socket and then miss acting on that activity as swiftly as it should
(causing an up to 1000 ms delay).
Reported-by: Antoni Villalonga
Fixes #3305
Closes #3306
Closes #3308
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The function does not return the same value as snprintf() normally does,
so readers may be mislead into thinking the code works differently than
it actually does. A different function name makes this easier to detect.
Reported-by: Tomas Hoger
Assisted-by: Daniel Gustafsson
Fixes #3296
Closes #3297
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When using c-ares for asyn dns, the dns socket fd was silently closed
by c-ares without curl being aware. curl would then 'realize' the fd
has been removed at next call of Curl_resolver_getsock, and only then
notify the CURLMOPT_SOCKETFUNCTION to remove fd from its poll set with
CURL_POLL_REMOVE. At this point the fd is already closed.
By using ares socket state callback (ARES_OPT_SOCK_STATE_CB), this
patch allows curl to be notified that the fd is not longer needed
for neither for write nor read. At this point by calling
Curl_multi_closed we are able to notify multi with CURL_POLL_REMOVE
before the fd is actually closed by ares.
In asyn-ares.c Curl_resolver_duphandle we can't use ares_dup anymore
since it does not allow passing a different sock_state_cb_data
Closes #3238
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If Curl_protocol_connect() returns an error code,
handle the error instead of switching to the next state.
Closes #3170
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Curl_follow() no longer frees the string. Make sure it happens in the
caller function, like we normally handle allocations.
This bug was introduced with the use of the URL API internally, it has
never been in a release version
Reported-by: Dario Weißer
Closes #3149
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Otherwise, closing that handle can still cause surprises!
Reported-by: Martin Ankerl
Fixes #3138
Closes #3147
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Closes #3124
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... a missing multi_done() call.
Credit to OSS-Fuzz
Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=10728
Closes #3063
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Follow-up to #3044 - fix a leak OSS-Fuzz detected
Closes #3057
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... to make it a truly unified URL parser.
Closes #3017
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.... since getsock may update the expiry timer.
Fixes #2996
Closes #3000
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Closes #2668
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Starting 7.62.0, multiplexing is enabled by default in multi handles.
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Transparently. The related curl_multi_setopt() options all still returns
OK when pipelining is selected.
To re-enable the support, the single line change in lib/multi.c needs to
be reverted.
See docs/DEPRECATE.md
Closes #2705
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Saves 16KB on the easy handle for operations that don't need that
buffer.
Part 1 of #2888
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This struct field is never set TRUE in any existing code path. This
change removes the field completely.
Closes #2871
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Fixes #2801
Closes #2812
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It was previously erroneously skipped in some situations.
libtest/libntlmconnect.c wrongly depended on wrong behavior (that it
would get a zero timeout) when no handles are "running" in a multi
handle. That behavior is no longer present with this fix. Now libcurl
will always return a -1 timeout when all handles are completed.
Closes #2733
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... as the usage needs to be counted.
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Fixes #2677
Closes #2679
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When the application just started the transfer and then stops it while
the name resolve in the background thread hasn't completed, we need to
wait for the resolve to complete and then cleanup data accordingly.
Enabled test 1553 again and added test 1590 to also check when the host
name resolves successfully.
Detected by OSS-fuzz.
Closes #1968
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- Get rid of variable that was generating false positive warning
(unitialized)
- Fix issues in tests
- Reduce scope of several variables all over
etc
Closes #2631
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Detected using the `codespell` tool (version 1.13.0).
Also secure and fix an URL.
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