Removed an unused variable and one do-while loop that wasn't used either.
Added a few comments while at it.

fix compiler warning: enumerated type mixed with another type

minor spell and language fix of a comment

- Ben Van Hof filed bug report #1945240: "libcurl sometimes sends body twice
when using CURL_AUTH_ANY" (http://curl.haxx.se/bug/view.cgi?id=1945240).
The problem was that when libcurl rew

- Ben Van Hof filed bug report #1945240: "libcurl sometimes sends body twice
when using CURL_AUTH_ANY" (http://curl.haxx.se/bug/view.cgi?id=1945240).
The problem was that when libcurl rewound a stream meant for upload when it
would prepare for a second request, it could accidentally continue the
sending of the rewound data on the first request instead of on the second.
Ben also provided test case 1030 that verifies this fix.

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- To make it easier for applications that want lots of magic stuff done on
redirections and thus cannot use CURLOPT_FOLLOWLOCATION easily, we now
introduce the new CURLINFO_REDIRECT_URL o

- To make it easier for applications that want lots of magic stuff done on
redirections and thus cannot use CURLOPT_FOLLOWLOCATION easily, we now
introduce the new CURLINFO_REDIRECT_URL option that lets applications
extract the URL libcurl would've redirected to if it had been told to. This
then enables the application to continue to that URL as it thinks is
suitable, without having to re-implement the magic of creating the new URL
from the Location: header etc. Test 1029 verifies it.

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- Fixed the problem with doing a zero byte SCP transfer, verified with test
case 617 (which was added by Daniel Fandrich 5 Mar 2008).

Change the confusing two variables for the expect 100 continue stuff into
a single state variable to make the code easier to follow and understand.

- Zmey Petroff found a crash when libcurl accessed a NULL pointer, which
happened if you set the connection cache size to 1 and for example failed to
login to an FTP site. Bug report #189

- Zmey Petroff found a crash when libcurl accessed a NULL pointer, which
happened if you set the connection cache size to 1 and for example failed to
login to an FTP site. Bug report #1896698
(http://curl.haxx.se/bug/view.cgi?id=1896698)

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- We no longer support setting the CURLOPT_URL option from inside a callback
such as the CURLOPT_SSL_CTX_FUNCTION one treat that as if it was a Location:
following. The patch that introdu

- We no longer support setting the CURLOPT_URL option from inside a callback
such as the CURLOPT_SSL_CTX_FUNCTION one treat that as if it was a Location:
following. The patch that introduced this feature was done for 7.11.0, but
this code and functionality has been broken since about 7.15.4 (March 2006)
with the introduction of non-blocking OpenSSL "connects".

It was a hack to begin with and since it doesn't work and hasn't worked
correctly for a long time and nobody has even noticed, I consider it a very
suitable subject for plain removal. And so it was done.

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- Dmitry Kurochkin moved several struct fields from the connectdata struct to
the SingleRequest one to make pipelining better. It is a bit tricky to keep
them in the right place, to keep

- Dmitry Kurochkin moved several struct fields from the connectdata struct to
the SingleRequest one to make pipelining better. It is a bit tricky to keep
them in the right place, to keep things related to the actual request or to
the actual connection in the right place.

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Dmitry Kurochkin worked a lot on improving the HTTP Pipelining support that
previously had a number of flaws, perhaps most notably when an application
fired up N transfers at once as then the

Dmitry Kurochkin worked a lot on improving the HTTP Pipelining support that
previously had a number of flaws, perhaps most notably when an application
fired up N transfers at once as then they wouldn't pipeline at all that
nicely as anyone would think... Test case 530 was also updated to take the
improved functionality into account.

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Calls to Curl_failf() are not supposed to provide a trailing newline as the
function itself adds that. Fixed on 50 or something strings!

Georg Lippitsch brought CURLOPT_SEEKFUNCTION and CURLOPT_SEEKDATA to allow
libcurl to seek in a given input stream. This is particularly important when
doing upload resumes when there's alrea

Georg Lippitsch brought CURLOPT_SEEKFUNCTION and CURLOPT_SEEKDATA to allow
libcurl to seek in a given input stream. This is particularly important when
doing upload resumes when there's already a huge part of the file present
remotely. Before, and still if this callback isn't used, libcurl will read
and through away the entire file up to the point to where the resuming
begins (which of course can be a slow opereration depending on file size,
I/O bandwidth and more). This new function will also be preferred to get
used instead of the CURLOPT_IOCTLFUNCTION for seeking back in a stream when
doing multi-stage HTTP auth with POST/PUT.

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corrected comment

fix compiler warning

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.

All static functions that were previously name Curl_* something no longer
use that prefix as we use that prefix only for library-wide internal global
symbols.

struct HandleData is now called struct SingleRequest, and is only for data that
is inited at the start of the DO action. I removed the Curl_transfer_keeper
struct completely, and I had to mov

struct HandleData is now called struct SingleRequest, and is only for data that
is inited at the start of the DO action. I removed the Curl_transfer_keeper
struct completely, and I had to move out a few struct members (that had to
be set before DO or used after DONE) to the UrlState struct. The SingleRequest
struct is accessed with SessionHandle->req.

One of the biggest reasons for doing this was the bunch of duplicate struct
members in HandleData and Curl_transfer_keeper since it was really messy to
keep track of two variables with the same name and basically the same purpose!

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Rearranged code and changed Curl_readwrite_init() and Curl_pre_readwrite() into
do_init() and do_complete() which now are called first and last in the DO
function. It simplified the flow in m

Rearranged code and changed Curl_readwrite_init() and Curl_pre_readwrite() into
do_init() and do_complete() which now are called first and last in the DO
function. It simplified the flow in multi.c and the functions got more
sensible names!

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Make the Transfer() function return earlier without doing any initializations
for the cases where there's nothing to do in here, like for SFTP directory
listings that already is complete when

Make the Transfer() function return earlier without doing any initializations
for the cases where there's nothing to do in here, like for SFTP directory
listings that already is complete when this function gets called. The init
stuff clears byte counters which isn't really desired.

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removed space after if and while before the parenthesis for better source code
consistency

Fix dynamic CURLOPT_POSTFIELDS bug: back to static.
CURLOPT_COPYPOSTFIELDS option added for dynamic.
Fix some OS400 features.

known bug #46: chunked-encoded CONNECT responses from a http proxy now works.
Added test case 1008 to verify. Note that #47 is still there.

Enabled a few more gcc warnings with --enable-debug. Renamed a few
variables to avoid shadowing global declarations.

Philip Langdale provided the new CURLOPT_POST301 option for
curl_easy_setopt() that alters how libcurl functions when following
redirects. It makes libcurl obey the RFC2616 when a 301 respons

Philip Langdale provided the new CURLOPT_POST301 option for
curl_easy_setopt() that alters how libcurl functions when following
redirects. It makes libcurl obey the RFC2616 when a 301 response is received
after a non-GET request is made. Default libcurl behaviour is to change
method to GET in the subsequent request (like it does for response code 302
- because that's what many/most browsers do), but with this CURLOPT_POST301
option enabled it will do what the spec says and do the next request using
the same method again. I.e keep POST after 301.

The curl tool got this option as --post301

Test case 1011 and 1012 were added to verify.

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