Provide minimal support for Windows (fix #146)

[arteymix]

Here's what's remaining:

• setup Travis CI to perform cross-compilation and run tests with Wine
• find or build a DLL for libfcgi
• dist the framework for Windows
• find an alternative to Server.fork
• find an alternative for graceful shutdown

[codecov-io]

Codecov Report

Merging #198 into master will increase coverage by 0.66%.
The diff coverage is 80%.

@@            Coverage Diff             @@
##           master     #198      +/-   ##
==========================================
+ Coverage   62.39%   63.06%   +0.66%     
==========================================
  Files          40       40              
  Lines        1367     1359       -8     
  Branches      170      166       -4     
==========================================
+ Hits          853      857       +4     
+ Misses        446      436      -10     
+ Partials       68       66       -2

Impacted Files	Coverage Δ
src/vsgi/vsgi-server.vala	70% <ø> (ø)	✅
src/vsgi/vsgi-socket-server.vala	81.81% <100%> (+3.03%)	✅
src/vsgi/vsgi-application.vala	31.7% <75%> (+6.15%)	✅

---

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[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@2731149). Click here to learn what that means.
The diff coverage is 20%.

@@            Coverage Diff            @@
##             master     #198   +/-   ##
=========================================
  Coverage          ?   61.32%           
=========================================
  Files             ?       44           
  Lines             ?     1453           
  Branches          ?      177           
=========================================
  Hits              ?      891           
  Misses            ?      499           
  Partials          ?       63

Impacted Files	Coverage Δ
src/vsgi/vsgi-server.vala	73.33% <ø> (ø)
src/vsgi/vsgi-application.vala	0% <0%> (ø)
src/vsgi/vsgi-socket-server.vala	81.81% <100%> (ø)

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[ZanderBrown]

Num	Test	Status	Time
1/18	legacy	OK	0.64 s
2/18	auth	OK	0.64 s
3/18	multipart	OK	0.64 s
4/18	request	OK	0.64 s
5/18	response	OK	0.20 s
6/18	server	FAIL	0.20 s
7/18	http server	FAIL	0.20 s
8/18	socket server	OK	0.20 s
9/18	loader	OK	0.51 s
10/18	authenticate	OK	0.51 s
11/18	basepath	OK	0.51 s
12/18	basic	OK	0.51 s
13/18	content negotiation	OK	0.18 s
14/18	context	OK	0.25 s
15/18	safely	OK	0.25 s
16/18	router	OK	0.25 s
17/18	rule route	FAIL	0.20 s
18/18	status	OK	0.13 s

Response	Count
OK:	15
FAIL:	3
SKIP:	0
TIMEOUT:	0

The output from the failed tests:

 6/18 server                                  FAIL     0.20 s

--- command ---
C:/msys32/home/user/valum/build/tests/server-test.exe
--- stdout ---
/server/fork:
-------

 7/18 http server                             FAIL     0.20 s

--- command ---
G_TEST_SRCDIR='C:/msys32/home/user/valum/tests' C:/msys32/home/user/valum/build/tests/http-server-test.exe
--- stdout ---
/http_server/https:
-------

17/18 rule route                              FAIL     0.20 s

--- command ---
C:/msys32/home/user/valum/build/tests/rule-route-test.exe
--- stdout ---
/rule_route/to_url_from_hash: OK
/rule_route/to_url: OK
/rule_route/to_url/exclude_rule_specific_characters: OK
/rule_route/to_url/optional: OK
/rule_route/to_url/error_on_missing_parameter:
-------

Full log written to C:/msys32/home/user/valum/build/meson-logs/testlog.txt
FAILED: test
"C:/msys32/mingw32/bin/python3.exe" "C:/msys32/mingw32/bin/mesontest.py" "--no-rebuild" "--print-errorlogs"
ninja: build stopped: subcommand failed.

[arteymix]

@ZanderBrown I'm aware of that :) I need to setup AppVeyor to automate the tests because I don't run Windows, though I really have no clue about doing that

[elegaanz]

I have Windows on my computer, I can help on this if you want. 😃

[ZanderBrown]

@arteymix I suspected you where aware, my comment was intended more to show your progress (i.e. most stuff works). Built on Win10 32bit (MSYS2 MinGW)

[arteymix]

@Bat41 Good luck!

Forking should be a no-op on non-supporting platform.

Server errors might be related with dynamic loading of implementations. It's using rpath, which is not supported I think. We might need to use an absolute path for implementations.

The rule thing needs debugging.

[ZanderBrown]

A further cause of issues maybe Windows Firewall which did popup during the tests (Admin permission is needed to publically open a port)

[arteymix]

@ZanderBrown

Looks strange that you need admin right for using an unpriviledged port. It seems to me that tests are using 3003, no?

[ZanderBrown]

In my experience opening any port to the wider network sets of Windows Firewall