Mercurial > hg > nginx
view conf/koi-win @ 6806:75dbab4ea930
Events: improved error event handling for UDP sockets.
Normally, the epoll module calls the read and write handlers depending
on whether EPOLLIN and EPOLLOUT are reported by epoll_wait(). No error
processing is done in the module, the handlers are expected to get an
error when doing I/O.
If an error event is reported without EPOLLIN and EPOLLOUT, the module
set both EPOLLIN and EPOLLOUT to ensure the error event is handled at
least in one active handler.
This works well unless the error is delivered along with only one of
EPOLLIN or EPOLLOUT, and the corresponding handler does not do any I/O.
For example, it happened when getting EPOLLERR|EPOLLOUT from
epoll_wait() upon receiving "ICMP port unreachable" while proxying UDP.
As the write handler had nothing to send it was not able to detect and
log an error, and did not switch to the next upstream.
The fix is to unconditionally set EPOLLIN and EPOLLOUT in case of an
error event. In the aforementioned case, this causes the read handler
to be called which does recv() and detects an error.
In addition to the epoll module, analogous changes were made in
devpoll/eventport/poll.
author | Dmitry Volyntsev <xeioex@nginx.com> |
---|---|
date | Mon, 21 Nov 2016 16:03:42 +0300 |
parents | 400711951595 |
children |
line wrap: on
line source
charset_map koi8-r windows-1251 { 80 88 ; # euro 95 95 ; # bullet 9A A0 ; # 9E B7 ; # · A3 B8 ; # small yo A4 BA ; # small Ukrainian ye A6 B3 ; # small Ukrainian i A7 BF ; # small Ukrainian yi AD B4 ; # small Ukrainian soft g AE A2 ; # small Byelorussian short u B0 B0 ; # ° B3 A8 ; # capital YO B4 AA ; # capital Ukrainian YE B6 B2 ; # capital Ukrainian I B7 AF ; # capital Ukrainian YI B9 B9 ; # numero sign BD A5 ; # capital Ukrainian soft G BE A1 ; # capital Byelorussian short U BF A9 ; # (C) C0 FE ; # small yu C1 E0 ; # small a C2 E1 ; # small b C3 F6 ; # small ts C4 E4 ; # small d C5 E5 ; # small ye C6 F4 ; # small f C7 E3 ; # small g C8 F5 ; # small kh C9 E8 ; # small i CA E9 ; # small j CB EA ; # small k CC EB ; # small l CD EC ; # small m CE ED ; # small n CF EE ; # small o D0 EF ; # small p D1 FF ; # small ya D2 F0 ; # small r D3 F1 ; # small s D4 F2 ; # small t D5 F3 ; # small u D6 E6 ; # small zh D7 E2 ; # small v D8 FC ; # small soft sign D9 FB ; # small y DA E7 ; # small z DB F8 ; # small sh DC FD ; # small e DD F9 ; # small shch DE F7 ; # small ch DF FA ; # small hard sign E0 DE ; # capital YU E1 C0 ; # capital A E2 C1 ; # capital B E3 D6 ; # capital TS E4 C4 ; # capital D E5 C5 ; # capital YE E6 D4 ; # capital F E7 C3 ; # capital G E8 D5 ; # capital KH E9 C8 ; # capital I EA C9 ; # capital J EB CA ; # capital K EC CB ; # capital L ED CC ; # capital M EE CD ; # capital N EF CE ; # capital O F0 CF ; # capital P F1 DF ; # capital YA F2 D0 ; # capital R F3 D1 ; # capital S F4 D2 ; # capital T F5 D3 ; # capital U F6 C6 ; # capital ZH F7 C2 ; # capital V F8 DC ; # capital soft sign F9 DB ; # capital Y FA C7 ; # capital Z FB D8 ; # capital SH FC DD ; # capital E FD D9 ; # capital SHCH FE D7 ; # capital CH FF DA ; # capital hard sign }