pipelining: removed

As previously planned and documented in DEPRECATE.md, all pipelining
code is removed.

Closes #3651

http: Implement trailing headers for chunked transfers

This adds the CURLOPT_TRAILERDATA and CURLOPT_TRAILERFUNCTION
options that allow a callback based approach to sending trailing head

http: Implement trailing headers for chunked transfers

This adds the CURLOPT_TRAILERDATA and CURLOPT_TRAILERFUNCTION
options that allow a callback based approach to sending trailing headers
with chunked transfers.

The test server (sws) was updated to take into account the detection of the
end of transfer in the case of trailing headers presence.

Test 1591 checks that trailing headers can be sent using libcurl.

Closes #3350

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snprintf: renamed and we now only use msnprintf()

The function does not return the same value as snprintf() normally does,
so readers may be mislead into thinking the code works differen

snprintf: renamed and we now only use msnprintf()

The function does not return the same value as snprintf() normally does,
so readers may be mislead into thinking the code works differently than
it actually does. A different function name makes this easier to detect.

Reported-by: Tomas Hoger
Assisted-by: Daniel Gustafsson
Fixes #3296
Closes #3297

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whitespace fixes

- replace tabs with spaces where possible
- remove line ending spaces
- remove double/triple newlines at EOF
- fix a non-UTF-8 character
- cleanup a few inde

whitespace fixes

- replace tabs with spaces where possible
- remove line ending spaces
- remove double/triple newlines at EOF
- fix a non-UTF-8 character
- cleanup a few indentations/line continuations
in manual examples

Closes https://github.com/curl/curl/pull/3037

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http: fix for tiny "HTTP/0.9" response

Deal with tiny "HTTP/0.9" (header-less) responses by checking the
status-line early, even before a full "HTTP/" is received to allow
detecting

http: fix for tiny "HTTP/0.9" response

Deal with tiny "HTTP/0.9" (header-less) responses by checking the
status-line early, even before a full "HTTP/" is received to allow
detecting 0.9 properly.

Test 1266 and 1267 added to verify.

Fixes #2420
Closes #2872

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sws: handle EINTR when calling select()

Closes https://github.com/curl/curl/pull/2808

cppcheck: fix warnings

- Get rid of variable that was generating false positive warning
(unitialized)

- Fix issues in tests

- Reduce scope of several variables all over

cppcheck: fix warnings

- Get rid of variable that was generating false positive warning
(unitialized)

- Fix issues in tests

- Reduce scope of several variables all over

etc

Closes #2631

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spelling fixes

Detected using the `codespell` tool (version 1.13.0).

Also secure and fix an URL.

spelling fixes

Detected using the `codespell` tool.

Also contains one URL protocol upgrade.

Closes https://github.com/curl/curl/pull/2334

tests: added netinet/in6.h includes in test servers

tests: add initial gssapi test using stub implementation

The stub implementation is pre-loaded using LD_PRELOAD
and emulates common gssapi uses (only builds if curl is
initially buil

tests: add initial gssapi test using stub implementation

The stub implementation is pre-loaded using LD_PRELOAD
and emulates common gssapi uses (only builds if curl is
initially built with gssapi support).

The initial tests are currently disabled for debug builds
as LD_PRELOAD is not used then.

Ref: https://github.com/curl/curl/pull/1687

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code style: use spaces around pluses

code style: use spaces around equals signs

http: add --strip-path-slash and CURLOPT_STRIP_PATH_SLASH

... to enable sending "OPTIONS *" which wasn't possible previously.

This option currently only works for HTTP.

Add

http: add --strip-path-slash and CURLOPT_STRIP_PATH_SLASH

... to enable sending "OPTIONS *" which wasn't possible previously.

This option currently only works for HTTP.

Added test cases 1298 + 1299 to verify

Fixes #1280
Closes #1462

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http-proxy: deal with EAGAIN

... the previous code would reset the header length wrongly (since
5113ad0424). This makes test 1060 reliable again.

Also: make sws send even smalle

http-proxy: deal with EAGAIN

... the previous code would reset the header length wrongly (since
5113ad0424). This makes test 1060 reliable again.

Also: make sws send even smaller chunks of data to increase the
likeliness of this happening.

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tests/server: make string literals const

assign string literals to const char * instead of char * in order to
avoid a lot of these warnings:
cast from 'const char *' to 'char *' drop

tests/server: make string literals const

assign string literals to const char * instead of char * in order to
avoid a lot of these warnings:
cast from 'const char *' to 'char *' drops const qualifier
[-Wcast-qual]

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code: fix typos and style in comments

A few random typos, and minor whitespace cleanups, found in comments
while reading code.

Closes #1423

sws: use SOCKERRNO, not errno

Reported-by: Gisle Vanem

sws: retry send() on EWOULDBLOCK

Fixes spurious test 1060 and 1061 failures on OpenBSD, Solaris and more.

Bug: https://curl.haxx.se/mail/lib-2017-01/0009.html
Reported-by: Chris

sws: retry send() on EWOULDBLOCK

Fixes spurious test 1060 and 1061 failures on OpenBSD, Solaris and more.

Bug: https://curl.haxx.se/mail/lib-2017-01/0009.html
Reported-by: Christian Weisgerber

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checksrc: warn for assignments within if() expressions

... they're already frowned upon in our source code style guide, this
now enforces the rule harder.

checksrc: code style: use 'char *name' style

s/cURL/curl

We're mostly saying just "curl" in lower case these days so here's a big
cleanup to adapt to this reality. A few instances are left as the
project could still formally be

s/cURL/curl

We're mostly saying just "curl" in lower case these days so here's a big
cleanup to adapt to this reality. A few instances are left as the
project could still formally be considered called cURL.

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tests/util: get a private strncasecompare clone

... since the curlx_* code no longer provides one and we don't link
libcurl to these test servers.

strcasecompare: is the new name for strequal()

... to make it less likely that we forget that the function actually
does case insentive compares. Also replaced several invokes of the

strcasecompare: is the new name for strequal()

... to make it less likely that we forget that the function actually
does case insentive compares. Also replaced several invokes of the
function with a plain strcmp when case sensitivity is not an issue (like
comparing with "-").

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tests/server: comply with our code style