tests: remove leading spaces from some tags

The threee tags `<name>`, `</name>` and `<command>` were frequently used
with a leading space that this removes. The reason this habbit is so

tests: remove leading spaces from some tags

The threee tags `<name>`, `</name>` and `<command>` were frequently used
with a leading space that this removes. The reason this habbit is so
widespread in testcases is probably that they have been copy and pasted.

Hence, fixing them all now might curb this practice from now on.

Closes #12028

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misc: better random strings

Generate alphanumerical random strings.

Prior this change curl used to create random hex strings. This was
mostly okay, but having alphanumerical ran

misc: better random strings

Generate alphanumerical random strings.

Prior this change curl used to create random hex strings. This was
mostly okay, but having alphanumerical random strings is better: The
strings have more entropy in the same space.

The MIME multipart boundary used to be mere 64-bits of randomness due
to being 16 hex chars. With these changes the boundary is 22
alphanumerical chars, or little over 130 bits of randomness.

Closes #11838

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test650: fix an end tag typo

lib: move mimepost data from ->req.p.http to ->state

When the legacy CURLOPT_HTTPPOST option is used, it gets converted into
the modem mimpost struct at first use. This data is (now) kep

lib: move mimepost data from ->req.p.http to ->state

When the legacy CURLOPT_HTTPPOST option is used, it gets converted into
the modem mimpost struct at first use. This data is (now) kept for the
entire transfer and not only per single HTTP request. This re-enables
rewind in the beginning of the second request instead of in end of the
first, as brought by 1b39731.

The request struct is per-request data only.

Extend test 650 to verify.

Fixes #11680
Reported-by: yushicheng7788 on github
Closes #11682

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configure, cmake, lib: more form api deprecation

Introduce a --enable-form-api configure option to control its inclusion
in builds. The condition name defined for it is CURL_DISABLE_FORM

configure, cmake, lib: more form api deprecation

Introduce a --enable-form-api configure option to control its inclusion
in builds. The condition name defined for it is CURL_DISABLE_FORM_API.

Form api code is dependent of MIME: configure and CMake handle this
dependency automatically: CMake by making it a dependent option
explicitly, configure by inheriting the MIME value by default and
rejecting explicit incompatible values.

"form-api" is now a new hidden test feature.

Update libcurl modules to respect this option and adjust tests
accordingly.

Closes #9621

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tests: use %LOGDIR to refer to the log directory

This will allow it be set dynamically.

Ref: #10818

tests: skip mime/form tests when mime is not built-in

Closes #9596

tests: ignore case of chunked hex numbers in tests

When hyper is used, it emits uppercase hexadecimal numbers for chunked
encoding lengths. Without hyper, lowercase hexadecimal numbers a

tests: ignore case of chunked hex numbers in tests

When hyper is used, it emits uppercase hexadecimal numbers for chunked
encoding lengths. Without hyper, lowercase hexadecimal numbers are used.
This change adds preprocessor statements to tests where this is an
issue, and adapts the fixtures to match.

Closes #6987

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tests: use %TESTNUMBER instead of fixed number

This makes the tests easier to copy and relocate to other test numbers
without having to update content.

Closes #6738

tests: fixup several tests

missing CRs and modified %hostip

lib556/test556: use a real HTTP version to make test reuse more convenient

make sure the weekday in Date headers

tests: fixup several tests

missing CRs and modified %hostip

lib556/test556: use a real HTTP version to make test reuse more convenient

make sure the weekday in Date headers matches the date

test61: replace stray "^M" (5e 4d) at the end of a cookie with a '^M' (0d)

Gets the test working with external proxies like Privoxy again.

Closes #6463

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mime: do not perform more than one read in a row

Input buffer filling may delay the data sending if data reads are slow.
To overcome this problem, file and callback data reads do not acc

mime: do not perform more than one read in a row

Input buffer filling may delay the data sending if data reads are slow.
To overcome this problem, file and callback data reads do not accumulate
in buffer anymore. All other data (memory data and mime framing) are
considered as fast and still concatenated in buffer.
As this may highly impact performance in terms of data overhead, an early
end of part data check is added to spare a read call.
When encoding a part's data, an encoder may require more bytes than made
available by a single read. In this case, the above rule does not apply
and reads are performed until the encoder is able to deliver some data.

Tests 643, 644, 645, 650 and 654 have been adapted to the output data
changes, with test data size reduced to avoid the boredom of long lists of
1-byte chunks in verification data.
New test 667 checks mimepost using single-byte read callback with encoder.
New test 668 checks the end of part data early detection.

Fixes #4826
Reported-by: MrdUkk on github

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Revert "mime: do not perform more than one read in a row"

This reverts commit ed0f357f7d25566110d4302f33759f4ffb5a6f83.

mime: do not perform more than one read in a row

Input buffer filling may delay the data sending if data reads are slow.
To overcome this problem, file and callback data reads do not acc

mime: do not perform more than one read in a row

Input buffer filling may delay the data sending if data reads are slow.
To overcome this problem, file and callback data reads do not accumulate
in buffer anymore. All other data (memory data and mime framing) are
considered as fast and still concatenated in buffer.
As this may highly impact performance in terms of data overhead, an early
end of part data check is added to spare a read call.
When encoding a part's data, an encoder may require more bytes than made
available by a single read. In this case, the above rule does not apply
and reads are performed until the encoder is able to deliver some data.

Tests 643, 644, 645, 650 and 654 have been adapted to the output data
changes, with test data size reduced to avoid the boredom of long lists of
1-byte chunks in verification data.
New test 664 checks mimepost using single-byte read callback with encoder.
New test 665 checks the end of part data early detection.

Fixes #4826
Reported-by: MrdUkk on github

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mime: keep "text/plain" content type if user-specified.

Include test cases in 554, 587, 650.

Fixes https://github.com/curl/curl/issues/1986

test650: Use variable replacement to set the host address and port

Otherwise, the test fails when the -b test option is used to set a
different test port range.

form API: add new test 650.

Now that the form API is deprecated and not used anymore in curl tool,
a lot of its features left untested. Test 650 attempts to check all these
features

form API: add new test 650.

Now that the form API is deprecated and not used anymore in curl tool,
a lot of its features left untested. Test 650 attempts to check all these
features not tested elsewhere.

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