wrap long lines and do some indent policing

Chris Conroy brought support for RTSP transfers, and with it comes 8(!) new
libcurl options for controlling what to get and how to receive posssibly
interleaved RTP data. Initial commit.

- Fabian Keil ran clang on the (lib)curl code, found a bunch of warnings and
contributed a range of patches to fix them.

Internal cleanup: KEEP_WRITE and KEEP_READ are now called KEEP_SEND and
KEEP_RECV to better match the general terminology: receive and send is what we
do from the (remote) servers. We read an

Internal cleanup: KEEP_WRITE and KEEP_READ are now called KEEP_SEND and
KEEP_RECV to better match the general terminology: receive and send is what we
do from the (remote) servers. We read and write from and to the local fs.

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libcurl's memory.h renamed to curl_memory.h

- Frank Hempel found out a bug and provided the fix:

curl_easy_duphandle did not necessarily duplicate the CURLOPT_COOKIEFILE
option. It only enabled the cookie engine in the destina

- Frank Hempel found out a bug and provided the fix:

curl_easy_duphandle did not necessarily duplicate the CURLOPT_COOKIEFILE
option. It only enabled the cookie engine in the destination handle if
data->cookies is not NULL (where data is the source handle). In case of a
newly initialized handle which just had the cookie support enabled by a
curl_easy_setopt(handle, CURL_COOKIEFILE, "")-call, handle->cookies was
still NULL because the setopt-call only appends the value to
data->change.cookielist, hence duplicating this handle would not have the
cookie engine switched on.

We also concluded that the slist-functionality would be suitable for being
put in its own module rather than simply hanging out in lib/sendf.c so I
created lib/slist.[ch] for them.

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Created a CURLMIN macro to match CURLMAX

Christian Krause fixed a build failure when building with gss support
enabled and FTP disabled.

- Fixed a potential data loss in Curl_client_write() when the transfer is
paused.

Marked with TODO comments a number of problems in the Kerberos code detected
while investigating the issue in http://curl.haxx.se/mail/lib-2008-09/0262.html
I'm hesitant to fix them because I

Marked with TODO comments a number of problems in the Kerberos code detected
while investigating the issue in http://curl.haxx.se/mail/lib-2008-09/0262.html
I'm hesitant to fix them because I have no way of testing the result.

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Changed some arrays of char* to arrays of char[] to reduce data size and
run-time relocations.

fix compiler warning: enumerated type mixed with another type

made Curl_read_plain() return an 'int' instead of CURLcode since it actually
returns -1 in EAGAIN cases and that's not valid CURLcode

- Made the SOCKS code use the new Curl_read_plain() function to fix the bug
Markus Moeller reported: http://curl.haxx.se/mail/archive-2008-09/0016.html

- recv() errors other than those

- Made the SOCKS code use the new Curl_read_plain() function to fix the bug
Markus Moeller reported: http://curl.haxx.se/mail/archive-2008-09/0016.html

- recv() errors other than those equal to EAGAIN now cause proper
CURLE_RECV_ERROR to get returned. This made test case 160 fail so I've now
disabled it until we can figure out another way to exercise that logic.

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remove unnecessary typecasting of malloc()

Use realloc when paused in Curl_client_write

- Introducing CURLOPT_CERTINFO and the corresponding CURLINFO_CERTINFO. By
enabling this feature with CURLOPT_CERTINFO for a request using SSL (HTTPS
or FTPS), libcurl will gather lots of

- Introducing CURLOPT_CERTINFO and the corresponding CURLINFO_CERTINFO. By
enabling this feature with CURLOPT_CERTINFO for a request using SSL (HTTPS
or FTPS), libcurl will gather lots of server certificate info and that info
can then get extracted by a client after the request has completed with
curl_easy_getinfo()'s CURLINFO_CERTINFO option. Linus Nielsen Feltzing
helped me test and smoothen out this feature.

Unfortunately, this feature currently only works with libcurl built to use
OpenSSL.

This feature was sponsored by networking4all.com - thanks!

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Made some variables const

- Hans-Jurgen May pointed out that trying SCP or SFTP over a SOCKS proxy
crashed libcurl. This is now addressed by making sure we use "plain send"
internally when doing the socks handshak

- Hans-Jurgen May pointed out that trying SCP or SFTP over a SOCKS proxy
crashed libcurl. This is now addressed by making sure we use "plain send"
internally when doing the socks handshake instead of the Curl_write()
function which is designed to use the "target" protocol. That's then SCP or
SFTP in this case. I also took the opportunity and cleaned up some ssh-
related #ifdefs in the code for readability.

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- Make Curl_write and it's callees accept a const pointer, in preparation
of tetetest's patch for curl_easy_send()

- Based on initial work done by Gautam Kachroo to address a bug, we now keep
better control at the exact state of the connection's SSL status so that we
know exactly when it has completed

- Based on initial work done by Gautam Kachroo to address a bug, we now keep
better control at the exact state of the connection's SSL status so that we
know exactly when it has completed the SSL negotiation or not so that there
won't be accidental re-uses of connections that are wrongly believed to be
in SSL-completed-negotiate state.

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this was modified this year so we bump the copyright year

Dmitry Kurochkin removed the cancelled state for pipelining, as we agreed
that it is bad anyway. Starting now, removing a handle that is in used in a
pipeline will break the pipeline - it'll

Dmitry Kurochkin removed the cancelled state for pipelining, as we agreed
that it is bad anyway. Starting now, removing a handle that is in used in a
pipeline will break the pipeline - it'll be set back up again but still...

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Introducing curl_easy_pause() and new magic return codes for both the read
and the write callbacks that now can make a connection's reading and/or
writing get paused.

Andrew Moise filed bug report #1847501
(http://curl.haxx.se/bug/view.cgi?id=1847501) and pointed out a memcpy()
that should be memmove() in the convert_lineends() function.