ngtcp2: Fix http3 upload stall

Closes #6521

ngtcp2: Fix stack buffer overflow

Closes #6521

warnless.h: remove the prototype for curlx_ultosi

Follow-up to 217552503ff3

warnless: remove curlx_ultosi

... not used anywhere

Closes #6530

lib: remove conn->data uses

Closes #6515

pingpong: remove the 'conn' struct member

... as it's superfluous now when Curl_easy is passed in and we can
derive the connection from that instead and avoid the duplicate copy.

pingpong: remove the 'conn' struct member

... as it's superfluous now when Curl_easy is passed in and we can
derive the connection from that instead and avoid the duplicate copy.

Closes #6525

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hostip/proxy: remove conn->data use

Closes #6513

url: reduce conn->data references

... there are a few left but let's keep them to last

Closes #6512

scripts/singleuse: add curl_easy_option*

test410: fix for windows

- Pass the very long request header via file instead of command line.

Prior to this change the 49k very long request header string was passed
via comman

test410: fix for windows

- Pass the very long request header via file instead of command line.

Prior to this change the 49k very long request header string was passed
via command line and on Windows that is too long so it was truncated and
the test would fail (specifically msys CI).

Closes https://github.com/curl/curl/pull/6516

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libssh2: move data from connection object to transfer object

Readdir data, filenames and attributes are strictly related to the
transfer and not the connection. This also reduces the tot

libssh2: move data from connection object to transfer object

Readdir data, filenames and attributes are strictly related to the
transfer and not the connection. This also reduces the total size of the
fixed connectdata struct.

Closes #6519

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RELEASE-NOTES: synced

lib: remove conn->data uses

Closes #6499

hyper: remove the conn->data references

Closes #6508

travis: build ngtcp2 --with-gnutls

... since they disable it by default since a few days back.

Closes #6506
Fixes #6493

hostip: remove conn->data from resolver functions

This also moves the 'async' struct from the connectdata struct into the
Curl_easy struct, which seems like a better home for it.

hostip: remove conn->data from resolver functions

This also moves the 'async' struct from the connectdata struct into the
Curl_easy struct, which seems like a better home for it.

Closes #6497

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strerror: skip errnum >= 0 assertion on windows

On Windows an error number may be greater than INT_MAX and negative once
cast to int.

The assertion is checked only in debug buil

strerror: skip errnum >= 0 assertion on windows

On Windows an error number may be greater than INT_MAX and negative once
cast to int.

The assertion is checked only in debug builds.

Closes https://github.com/curl/curl/pull/6504

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doh: make Curl_doh_is_resolved survive a NULL pointer

... if Curl_doh() returned a NULL, this function gets called anyway as
in a asynch procedure. Then the doh struct pointer is NULL an

doh: make Curl_doh_is_resolved survive a NULL pointer

... if Curl_doh() returned a NULL, this function gets called anyway as
in a asynch procedure. Then the doh struct pointer is NULL and signifies
an OOM situation.

Follow-up to 6246a1d8c6776

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wolfssh: remove conn->data references

... and repair recent build breakage

Closes #6507

http: empty reply connection are not left intact

... so mark the connection as closed in this condition to prevent that
verbose message to wrongly appear.

Reported-by: Matt Holt

http: empty reply connection are not left intact

... so mark the connection as closed in this condition to prevent that
verbose message to wrongly appear.

Reported-by: Matt Holt
Bug: https://twitter.com/mholt6/status/1352130240265375744
Closes #6503

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chunk/encoding: remove conn->data references

... by anchoring more functions on Curl_easy instead of connectdata

Closes #6498

lib: save a bit of space with some structure packing

- Reorder some internal struct members so that less padding is used.

This is an attempt at saving a bit of space by packing some

lib: save a bit of space with some structure packing

- Reorder some internal struct members so that less padding is used.

This is an attempt at saving a bit of space by packing some structs
(using pahole to find the holes) where it might make sense to do
so without losing readability.

I.e., I tried to avoid separating fields that seem grouped
together (like the cwd... fields in struct ftp_conn for instance).
Also abstained from touching fields behind conditional macros as
that quickly can get complicated.

Closes https://github.com/curl/curl/pull/6483

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INSTALL.md: fix typo

Found-by: Marcel Raad

http: get CURLOPT_REQUEST_TARGET working with a HTTP proxy

Added test 1613 to verify.

Closes #6490

Merge branch 'bagder/curl_range-data-conn'