... 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 6246a1d8c6
- 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
... instead of having it static within the Curl_easy struct. This takes
away 1176 bytes (18%) from the Curl_easy struct that aren't used very
often and instead makes the code allocate it when needed.
Closes#6492
The SOCKS code now uses the generic download buffer for temporary
storage during the connection procedure, instead of having its own
private 600 byte buffer that adds to the connectdata struct size. This
works fine because this point the buffer is allocated but is not use for
download yet since the connection hasn't completed.
This reduces the connection struct size by 22% on a 64bit arch!
The SOCKS buffer needs to be at least 600 bytes, and the download buffer
is guaranteed to never be smaller than 1000 bytes.
Closes#6491
By making the `magic` identifier the same size and at the same place
within the structs (easy, multi, share), libcurl will be able to more
reliably detect and safely error out if an application passes in the
wrong handle to APIs. Easier to detect and less likely to cause crashes
if done.
Such mixups can't be detected at compile-time due to them being
typedefed void pointers - unless `CURL_STRICTER` is defined.
Closes#6484
Since curl's own memory debugging system redefines free() calls to track
and fiddle with memory, it cannot be used on memory allocated by 3rd
party libraries.
Third party libraries SHOULD NOT require free() to release allocated
resources for this reason - and libs can use separate healp allocators
on some systems (like Windows) so free() doesn't necessarily work
anyway.
Filed as an issue with libssh: https://bugs.libssh.org/T268Closes#6481
... in most cases instead of 'struct connectdata *' but in some cases in
addition to.
- We mostly operate on transfers and not connections.
- We need the transfer handle to log, store data and more. Everything in
libcurl is driven by a transfer (the CURL * in the public API).
- This work clarifies and separates the transfers from the connections
better.
- We should avoid "conn->data". Since individual connections can be used
by many transfers when multiplexing, making sure that conn->data
points to the current and correct transfer at all times is difficult
and has been notoriously error-prone over the years. The goal is to
ultimately remove the conn->data pointer for this reason.
Closes#6425
... and as a practical side-effect, make sure that the
Curl_easyopts_check() function is asserted in debug builds, which we
want to detect mismatches between the options list in easyoptions.c and
the options in curl.h
Found-by: Gisle Vanem
Bug: 08e8455ddd (commitcomment-45991815)Closes#6461
... so that a function can first use MIMEPOST and then set it to NULL to
reset it back to a blank POST.
Added test 584 to verify the fix.
Reported-by: Christoph M. Becker
Fixes#6455Closes#6456
... instead of at end of the DO state. This makes the timer more
accurate for the protocols that use the DOING state (such as FTP), and
simplifies how the function (now called init_perform) is called.
The timer will then include the entire procedure up to PERFORM -
including all instructions for getting the transfer started.
Closes#6454
