[PATCH gwhttpd 0/7] gwhttpd updates

[Ammar Faizi <ammarfaizi2@gnuweeb.org>]

Hi,

This series contains gwhttpd refactoring and updates. I am going
to add directory traversing support feature, but before that,
several cleanups need to get done. And here it is...

Summary below...

## Patch 1
Don't continue executing the next line if we fail to parse the
HTTP header, that's the wrong path, we should stop the client
early.

## Patch 2
This mlock is just optional, don't bother showing error.

## Patch 3
Let the caller close the connection, we need to have more decisions
in the caller rather than closing it directly.

## Patch 4
Print a log message that we are interrupted, this makes the app user
friendly because the user can explicitly see from the output that the
app is interrupted.

## Patch 5
The HTTP header parser was prone and doesn't handle many edge cases.
This is a full refactor of HTTP header parser. While in there, add
more HTTP method supports.

## Patch 6
When we fail to send() due to EAGAIN, we retry the send(). However,
if we are spinning on this retry for so long, this will eat CPU cycle
and slow down the entire application. We should stop retrying at
some point. Add a loop counter and return -ENETDOWN if we are failing
too many times in the send() retry loop cycle.

## Patch 7
A patch for Makefile. Add a command to clean the binary file.

Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
---

Ammar Faizi (7):
  gwhttpd: Do an early return when parse_http_header fails
  gwhttpd: Don't print any error when mlock fails
  gwhttpd: Replace `send_error_and_close` with `send_http_error()`
  gwhttpd: Add log in the interrupt handler
  gwhttpd: Refactor HTTP header parser
  gwhttpd: Avoid endless busy spinning on `send()`
  Makefile: Add "make clean" command

 Makefile    |   3 +
 gwhttpd.cpp | 220 +++++++++++++++++++++++++++++++++++++---------------
 2 files changed, 161 insertions(+), 62 deletions(-)

base-commit: 944b77d9aaac4a88729da6ec2f76447a9c3562ab
-- 
Ammar Faizi