ngtcp2: Fix build error due to symbol name change

- NGTCP2_CRYPTO_LEVEL_APP -> NGTCP2_CRYPTO_LEVEL_APPLICATION

ngtcp2/ngtcp2@76232e9 changed the name.

ngtcp2 master is requ

ngtcp2: Fix build error due to symbol name change

- NGTCP2_CRYPTO_LEVEL_APP -> NGTCP2_CRYPTO_LEVEL_APPLICATION

ngtcp2/ngtcp2@76232e9 changed the name.

ngtcp2 master is required to build curl with http3 support.

Closes https://github.com/curl/curl/pull/6271

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cmake: check for linux/tcp.h

The HAVE_LINUX_TCP_H define was not set by cmake.

Closes #6252

NEW-PROTOCOL: document what needs to be done to add one

Closes #6263

splay: rename Curl_splayremovebyaddr to Curl_splayremove

... and remove the old unused proto for the old Curl_splayremove
version.

Closes #6269

openssl: free mem_buf in error path

To fix a memory-leak.

Closes #6267

openssl: remove #if 0 leftover

Follow-up to 4c9768565ec3a9 (from Sep 2008)

Closes #6268

ntlm: avoid malloc(0) on zero length user and domain

... and simplify the too-long checks somewhat.

Detected by OSS-Fuzz

Closes #6264

RELEASE-NOTES: synced

tests/server/tftpd.c: close upload file in case of abort

Commit c353207 removed the closing right after do_tftp
which covered the case of abort. This handles that case.

Reviewed

tests/server/tftpd.c: close upload file in case of abort

Commit c353207 removed the closing right after do_tftp
which covered the case of abort. This handles that case.

Reviewed-by: Jay Satiro
Reviewed-by: Daniel Stenberg

Follow up to #6209
Closes #6234

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ngtcp2: use the minimal version of QUIC supported by ngtcp2

Closes #6250

ngtcp2: advertise h3 ALPN unconditionally

Closes #6250

vquic/ngtcp2.h: define local_addr as sockaddr_storage

This field needs to be wide enough to hold sockaddr_in6 when
connecting via IPv6. Otherwise, ngtcp2_conn_read_pkt will drop the

vquic/ngtcp2.h: define local_addr as sockaddr_storage

This field needs to be wide enough to hold sockaddr_in6 when
connecting via IPv6. Otherwise, ngtcp2_conn_read_pkt will drop the
packets because of the address mismatch:
I00000022 [...] con ignore packet from unknown path

We can safely assume that struct sockaddr_storage is available, as it
is used in the public interface of ngtcp2.

Closes #6250

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socks: check for DNS entries with the right port number

The resolve call is done with the right port number, but the subsequent
check used the wrong one, which then could find a previous

socks: check for DNS entries with the right port number

The resolve call is done with the right port number, but the subsequent
check used the wrong one, which then could find a previous resolve which
would return and leave the fresh resolve "incomplete" and leaking
memory.

Fixes #6247
Closes #6253

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curl_setup: USE_RESOLVE_ON_IPS is for Apple native resolver use

... so don't define it when instructed to use c-ares!

test506: make it not run in c-ares builds

As the asynch nature of it may trigger events in another order. A c-ares
upgrade made it break.

Reported-by: Marc Hörsken
Fixes #62

test506: make it not run in c-ares builds

As the asynch nature of it may trigger events in another order. A c-ares
upgrade made it break.

Reported-by: Marc Hörsken
Fixes #6247

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runtests: make 'c-ares' a "feature" to depend on

... also added to the docs.

tool_writeout: use off_t getinfo-types instead of doubles

Commit 3b80d3ca46b12e52342 (June 2017) introduced getinfo replacement
variables that use curl_off_t instead of doubles. Switch t

tool_writeout: use off_t getinfo-types instead of doubles

Commit 3b80d3ca46b12e52342 (June 2017) introduced getinfo replacement
variables that use curl_off_t instead of doubles. Switch the --write-out
function over to use them.

Closes #6248

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file: avoid duplicated code sequence

file_disconnect() is identical with file_do() except the function header
but as the arguments are unused anyway so why not just return file_do()

file: avoid duplicated code sequence

file_disconnect() is identical with file_do() except the function header
but as the arguments are unused anyway so why not just return file_do()
directly!

Reviewed-by: Daniel Stenberg
Closes #6249

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infof/failf calls: fix format specifiers

Update a few format specifiers to match what is being printed.

Closes #6241

docs/INTERNALS: remove reference to Curl_sendf()

The function has been removed from common usage. Also removed comment in
gopher.c that still referenced it.

Reported-by: Rikard

docs/INTERNALS: remove reference to Curl_sendf()

The function has been removed from common usage. Also removed comment in
gopher.c that still referenced it.

Reported-by: Rikard Falkeborn
Fixes #6242
Closes #6243

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examples: update .gitignore

Add files that are generated by 'make examples' and remove some that
have been renamed.

The commits that renamed the programs are e9625c5bc6c046a (im

examples: update .gitignore

Add files that are generated by 'make examples' and remove some that
have been renamed.

The commits that renamed the programs are e9625c5bc6c046a (imap.c and
simplesmtp.c were renamed to imap-fetch.c and smtp-send.c) and
ad39e7ec01e7 (pop3slist.c and pop3s.c were renamed to pop3-list.c and
pop3-ssl.c).

Closes #6240

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asyn: use 'struct thread_data *' instead of 'void *'

To reduce use of types that can't be checked at compile time. Also
removes several typecasts.

... and rename the struct fiel

asyn: use 'struct thread_data *' instead of 'void *'

To reduce use of types that can't be checked at compile time. Also
removes several typecasts.

... and rename the struct field from 'os_specific' to 'tdata'.

Closes #6239
Reviewed-by: Jay Satiro

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Makefile.m32: add support for UNICODE builds

It requires the linker to support the `-municode` option.
This is available in more recent mingw-w64 releases.

Ref: https://gcc.gnu.

Makefile.m32: add support for UNICODE builds

It requires the linker to support the `-municode` option.
This is available in more recent mingw-w64 releases.

Ref: https://gcc.gnu.org/onlinedocs/gcc/x86-Windows-Options.html
Ref: https://stackoverflow.com/questions/3571250/wwinmain-unicode-and-mingw/11706847#11706847

Reviewed-by: Jay Satiro
Reviewed-by: Marcel Raad

Closes #6228

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urldata: remove 'void *protop' and create the union 'p'

... to avoid the use of 'void *' for the protocol specific structs done
per transfer.

Closes #6238

winbuild: remove docs from Makefiles and refer to README.md

Reduce risk for conflicting docs and makes it to a single place to fix
and polish.

add these missing options to the r

winbuild: remove docs from Makefiles and refer to README.md

Reduce risk for conflicting docs and makes it to a single place to fix
and polish.

add these missing options to the readme:

ENABLE_OPENSSL_AUTO_LOAD_CONFIG and ENABLE_UNICODE

clarify ENABLE_SCHANNEL default varies

Fixes #6216
Closes #6227
Co-Authored-by: Jay Satiro

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