Yukihiro "Matz" Matsumoto
f267925d45
Winsock APIs (socket, bind, connect, accept, recv, send, ...) report
errors via WSAGetLastError() and do not set errno, so mrb_sys_fail
on Windows was reading a stale or zero errno. Result: every socket
failure raised SystemCallError with errno 0 ("Success") instead of
the appropriate Errno::* class.
Add mrb_hal_socket_set_errno_from_last_error() to the HAL:
- POSIX: no-op (failed calls already set errno)
- Windows: maps WSAGetLastError() to a POSIX errno via wsa_to_errno()
with 32 cases covering the common Winsock error codes; unmapped
codes fall back to EIO. Each case is #ifdef-guarded against older
MSVC CRTs that lack a particular Exxx.
In src/socket.c, route the 22 socket-API failure sites through a new
sock_sys_fail() helper that calls the HAL translator before
mrb_sys_fail. Also fix mrb_hal_socket_set_nonblock() on Windows,
which was returning -1 without setting errno after ioctlsocket
failure.
POSIX behavior unchanged (verified: TCPSocket connect refused ->
Errno::ECONNREFUSED, bind to privileged port -> Errno::EACCES, bad
sockopt -> Errno::EOPNOTSUPP).
Closes #6819, reported by Asmod4n.
Co-authored-by: Claude <noreply@anthropic.com>
mruby-socket
"mruby-socket" mrbgem provides BSD socket interface for mruby. API is compatible with CRuby's "socket" library.
Example
% vi kame.rb
s = TCPSocket.open("www.kame.net", 80)
s.write("GET / HTTP/1.0\r\n\r\n")
puts s.read
s.close
% mruby kame.rb
HTTP/1.1 200 OK
Date: Tue, 21 May 2013 04:31:30 GMT
...
Requirement
- mruby-io mrbgem
- iij/mruby-mtest mrbgem to run tests
- system must have RFC3493 basic socket interface
- and some POSIX API...
TODO
- add missing methods
- write more tests
- fix possible descriptor leakage (see XXX comments)
UNIXSocket#recv_ioUNIXSocket#send_io
License
Copyright (c) 2013 Internet Initiative Japan Inc. Copyright (c) 2017 mruby developers
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.