quiche: set 'drain' when returning without having drained the queues

Revert "FTP: url-decode path before evaluation"

This reverts commit 2f036a72d543e96128bd75cb0fedd88815fd42e2.

HTTP3: merged and simplified the two 'running' sections

HTTP3: show an --alt-svc using example too

FTP: url-decode path before evaluation

Closes #4423

openssl: use strerror on SSL_ERROR_SYSCALL

Instead of showing the somewhat nonsensical errno number, use strerror()
to provide a more relatable error message.

Closes #4411

HTTP3: update quic.aiortc.org + add link to server list

Reported-by: Jeremy Lainé

url: don't set appconnect time for non-ssl/non-ssh connections

Prior to this change non-ssl/non-ssh connections that were reused set
TIMER_APPCONNECT [1]. Arguably that was incorrect sin

url: don't set appconnect time for non-ssl/non-ssh connections

Prior to this change non-ssl/non-ssh connections that were reused set
TIMER_APPCONNECT [1]. Arguably that was incorrect since no SSL/SSH
handshake took place.

[1]: TIMER_APPCONNECT is publicly known as CURLINFO_APPCONNECT_TIME in
libcurl and %{time_appconnect} in the curl tool. It is documented as
"the time until the SSL/SSH handshake is completed".

Reported-by: Marcel Hernandez

Ref: https://github.com/curl/curl/issues/3760

Closes https://github.com/curl/curl/pull/3773

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ngtcp2: remove fprintf() calls

- convert some of them to H3BUF() calls to infof()
- remove some of them completely
- made DEBUG_HTTP3 defined only if CURLDEBUG is set for now

ngtcp2: remove fprintf() calls

- convert some of them to H3BUF() calls to infof()
- remove some of them completely
- made DEBUG_HTTP3 defined only if CURLDEBUG is set for now

Closes #4421

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url: fix the NULL hostname compiler warning case

Closes #4403

travis: move the go install to linux-only

... to repair the build again
Closes #4403

altsvc: correct the #ifdef for the ngtcp2 backend

altsvc: save h3 as h3-23

Follow-up to d176a2c7e5

urlapi: question mark within fragment is still fragment

The parser would check for a query part before fragment, which caused it
to do wrong when the fragment contains a question mark.

urlapi: question mark within fragment is still fragment

The parser would check for a query part before fragment, which caused it
to do wrong when the fragment contains a question mark.

Extended test 1560 to verify.

Reported-by: Alex Konev
Fixes #4412
Closes #4413

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HTTP3.md: move -p for mkdir, remove -j for make

- mkdir on OSX/Darwin requires `-p` argument before dir

- portabbly figuring out number of cores is an exercise for somewhere
e

HTTP3.md: move -p for mkdir, remove -j for make

- mkdir on OSX/Darwin requires `-p` argument before dir

- portabbly figuring out number of cores is an exercise for somewhere
else

Closes #4407

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os400: getpeername() and getsockname() return ebcdic AF_UNIX sockaddr,

As libcurl now uses these 2 system functions, wrappers are needed on os400
to convert returned AF_UNIX sockaddrs to

os400: getpeername() and getsockname() return ebcdic AF_UNIX sockaddr,

As libcurl now uses these 2 system functions, wrappers are needed on os400
to convert returned AF_UNIX sockaddrs to ascii.

This is a follow-up to commit 7fb54ef.
See also #4037.
Closes #4214

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strcase: fix raw lowercasing the letter X

Casing mistake in Curl_raw_tolower 'X' wasn't lowercased as 'x' prior to
this change.

Follow-up to 0023fce which added the function sev

strcase: fix raw lowercasing the letter X

Casing mistake in Curl_raw_tolower 'X' wasn't lowercased as 'x' prior to
this change.

Follow-up to 0023fce which added the function several days ago.

Ref: https://github.com/curl/curl/pull/4401#discussion_r327396546

Closes https://github.com/curl/curl/pull/4408

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http2: Expression 'stream->stream_id != - 1' is always true

PVS-Studio warning
Fixes #4402

http2: A value is being subtracted from the unsigned variable

PVS-Studio warning
Fixes #4402

libssh: part of conditional expression is always true: !result

PVS-Studio warning
Fixed #4402

libssh: part of conditional expression is always true

PVS-Studio warning
Fixes #4402

libssh: The expression is excessive or contains a misprint

PVS-Studio warning
Fixes #4402

quiche: The expression must be surrounded by parentheses

PVS-Studio warning
Fixes #4402

vauth: The parameter 'status' must be surrounded by parentheses

PVS-Studio warning
Fixes #4402

doh: allow only http and https in debug mode

Otherwise curl may be told to use for instance pop3 to
communicate with the doh server, which most likely
is not what you want.

doh: allow only http and https in debug mode

Otherwise curl may be told to use for instance pop3 to
communicate with the doh server, which most likely
is not what you want.

Found through fuzzing.

Closes #4406

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