* [ANN] yahns 1.12.5 -_- sleepy app server for Ruby
@ 2016-06-05 23:12 4% ` Eric Wong
0 siblings, 0 replies; 2+ results
From: Eric Wong @ 2016-06-05 23:12 UTC (permalink / raw)
To: ruby-talk, yahns-public
A Free Software, multi-threaded, non-blocking network
application server designed for low _idle_ power consumption.
It is primarily optimized for applications with occasional users
which see little or no traffic. yahns currently hosts Rack/HTTP
applications, but may eventually support other application
types. Unlike some existing servers, yahns is extremely
sensitive to fatal bugs in the applications it hosts.
* git clone git://yhbt.net/yahns
* https://yahns.yhbt.net/README
* https://yahns.yhbt.net/NEWS.atom.xml
* we only accept plain-text email yahns-public@yhbt.net
* and archive all the mail we receive: https://yhbt.net/yahns-public/
* nntp://news.public-inbox.org/inbox.comp.lang.ruby.yahns
Changes:
yahns 1.12.5 - proxy_pass + rack.hijack fixes
Hopefully the last of the 1.12.x series, this release
fixes a few minor bugs mainly needed for testing.
No upgrade should be necessary for non-proxy_pass users.
4 changes since v1.12.4 from the "maint" branch at
git://yhbt.net/yahns.git
http_client: set state to :ignore before hijack callback
test/test_client_expire: fix for high RLIMIT_NOFILE
proxy_pass: do not chunk HTTP/1.0 with keep-alive
proxy_pass: X-Forwarded-For appends to existing list
lib/yahns/http_client.rb | 6 +++---
lib/yahns/proxy_http_response.rb | 8 ++++++--
lib/yahns/proxy_pass.rb | 5 ++++-
test/test_client_expire.rb | 13 +++++++++++--
test/test_proxy_pass.rb | 10 ++++++++++
5 files changed, 34 insertions(+), 8 deletions(-)
Note: the current "master" branch (at commit 5e211ea003d2)
includes refactorings and new features not included in this
release.
Please note the disclaimer:
yahns is extremely sensitive to fatal bugs in the apps it hosts. There
is no (and never will be) any built-in "watchdog"-type feature to kill
stuck processes/threads. Each yahns process may be handling thousands
of clients; unexpectedly killing the process will abort _all_ of those
connections. Lives may be lost!
yahns hackers are not responsible for your application/library bugs.
Use an application server which is tolerant of buggy applications
if you cannot be bothered to fix all your fatal bugs.
^ permalink raw reply [relevance 4%]
* [PATCH] http_client: set state to :ignore before hijack callback
@ 2016-05-09 22:20 7% Eric Wong
0 siblings, 0 replies; 2+ results
From: Eric Wong @ 2016-05-09 22:20 UTC (permalink / raw)
To: yahns-public
We need to set state as early as possible as any modification of our
HttpClient object is unsafe after it is handed over to the
underlying application. Otherwise, we could be clobbering a state
set inside the hijack but before we hit the case statement in
HttpClient#step_write.
This bug should not affect current (known) uses of rack.hijack;
but will be necessary for upcoming proxy_pass to support unbuffered
proxy responses.
---
lib/yahns/http_client.rb | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/lib/yahns/http_client.rb b/lib/yahns/http_client.rb
index 272db85..1d64e08 100644
--- a/lib/yahns/http_client.rb
+++ b/lib/yahns/http_client.rb
@@ -22,8 +22,7 @@ def step_write
case rv = @state.wbuf_flush(self)
when :wait_writable, :wait_readable
return rv # tell epoll/kqueue to wait on this more
- when :ignore # :ignore on hijack
- @state = :ignore
+ when :ignore # :ignore on hijack, @state already set in hijack_cleanup
return :ignore
when Yahns::StreamFile
@state = rv # continue looping
@@ -254,8 +253,9 @@ def yahns_read(bytes, buf)
# (and complicated) as our hijack support will allow "un-hijacking"
# the socket.
def hijack_cleanup
- # prevent socket from holding process up
+ # prevent socket from holding process exit up
Thread.current[:yahns_fdmap].forget(self)
+ @state = :ignore
@input = nil # keep env["rack.input"] accessible, though
end
--
e
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2016-04-08 20:01 [ANN] yahns 1.12.3 -_- sleepy app server for Ruby Eric Wong
2016-05-02 19:47 ` [ANN] yahns 1.12.4 " Eric Wong
2016-06-05 23:12 4% ` [ANN] yahns 1.12.5 " Eric Wong
2016-05-09 22:20 7% [PATCH] http_client: set state to :ignore before hijack callback Eric Wong
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