refactor some code out to write_pidfile() in util.c

Use a long int data type to handle getpid() result

Fix buffer size specification.

Improve handling of boundary conditions for huge requests.

Minor variable type cleanups.

Disable "swsbounce" mode when the received request
isn't for the same test and part number.

proper initialization of httprequest, no longer zeroing out twice
the whole 150000+ bytes struct, and also removing an equally big
additional buffer for pipelining treatment.

improve request initialization for test harness HTTP server

Dmitry Kurochkin's test harness HTTP server pipelining fix fot test 530

Detect, log and avoid storing a request with a negative size.

Allow test server to handle binary POSTs.
Tests 35, 544 545 added: binary data POSTs.

also log error message string

On error, close "log/server.response"

If TCP_NODELAY is not defined we can't disable the Nagle algorithm

Disable the Nagle algorithm and send back responses in small chunks in an
attempt to force smaller bits to get read by clients.

Oops missing var

add debug messages for initialization failures

use macros ERRNO, SET_ERRNO(), SOCKERRNO and SET_SOCKERRNO() for errno handling

compiler warning fix

enhance HTTP server request input writing,
retrying upon EINTR errors.

Venkat Akella found out that libcurl did not like HTTP responses that simply
responded with a single status line and no headers nor body. Starting now, a
HTTP response on a persistent connect

Venkat Akella found out that libcurl did not like HTTP responses that simply
responded with a single status line and no headers nor body. Starting now, a
HTTP response on a persistent connection (i.e not set to be closed after the
response has been taken care of) must have Content-Length or chunked
encoding set, or libcurl will simply assume that there is no body.

To my horror I learned that we had no less than 57(!) test cases that did bad
HTTP responses like this, and even the test http server (sws) responded badly
when queried by the test system if it is the test system. So although the
actual fix for the problem was tiny, going through all the newly failing test
cases got really painful and boring.

show more ...

Tor Arntsen spotted this mistake

Avoid trying to compare more than strlen bytes.

Replace is*() macros with our own IS*() ones.

Remove redundant __CYGWIN__ symbol check

Cygwin preprocessor adjustments

test 530 is the first ever HTTP pipelining test for libcurl