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From Gary Gregory <garydgreg...@gmail.com>
Subject Re: Core 4 and problem with socket timeout to origin server
Date Thu, 17 Aug 2017 14:11:16 GMT
On Thu, Aug 17, 2017 at 8:00 AM, Oleg Kalnichevski <olegk@apache.org> wrote:

> On Wed, 2017-08-16 at 16:37 -0600, Gary Gregory wrote:
> > Oleg,
> >
> > I created a ticket and a branch for
> > https://issues.apache.org/jira/browse/HTTPCORE-482
> >
> > Can you please review/update and merge if OK?
> >
> > Thank you,
> > Gary
> >
>
> Hi Gary
>
> The patch looks perfectly reasonable to me. I'll happily merge it for
> you if you like.
>

Great! Thank you Oleg. I need this ASAP, so if you can't get to it by EOD,
I'll go for it.

Gary


>
> Cheers
>
> Oleg
>
> > On Wed, Aug 16, 2017 at 3:00 PM, Gary Gregory <garydgregory@gmail.com
> > >
> > wrote:
> >
> > > Hi All (Oleg, really)
> > >
> > > I am wondering how to fix/deal with the a timeout occurring in an
> > > async
> > > proxy when an origin server takes too long to reply.
> > >
> > > You can reproduce this issue with our asyn example
> > > NHttpReverseProxy:
> > >
> > > Start it with: http://postman-echo.com 8888
> > >
> > > Then run:
> > >
> > > curl --verbose --max-time 1000 http://localhost:8888/delay/3
> > >
> > > and you will get an EMPTY response from the server, no HTTP status
> > > code
> > > where I would expect a 504 or 500.
> > >
> > > The proxy prints out:
> > >
> > > Reverse proxy to http://postman-echo.com:80
> > > [client->proxy] connection open 127.0.0.1:8888<->127.0.0.1:61128
> > > [client->proxy] 00000001 GET /delay/3 HTTP/1.1
> > > [client->proxy] 00000001 request completed
> > > [proxy->origin] connection open 192.168.0.112:61130<-
> > > >52.44.234.173:80
> > > [proxy->origin] 00000001 GET /delay/3 HTTP/1.1
> > > [proxy->origin] 00000001 request completed
> > > [client->proxy] connection closed 127.0.0.1:8888<->127.0.0.1:61128
> > > [client<-proxy] 00000001 java.net.SocketTimeoutException
> > > [proxy->origin] connection released 192.168.0.112:61130<-
> > > >52.44.234.173:80
> > > [proxy->origin] [total kept alive: 0; total allocated: 0 of 100]
> > > [proxy->origin] connection closed 192.168.0.112:61130<-
> > > >52.44.234.173:80
> > >
> > > Curl prints:
> > >
> > > * STATE: INIT => CONNECT handle 0x600057930; line 1410 (connection
> > > #-5000)
> > > * Added connection 0. The cache now contains 1 members
> > > * STATE: CONNECT => WAITRESOLVE handle 0x600057930; line 1446
> > > (connection
> > > #0)
> > > *   Trying ::1...
> > > * TCP_NODELAY set
> > > * STATE: WAITRESOLVE => WAITCONNECT handle 0x600057930; line 1527
> > > (connection #0)
> > > *   Trying 127.0.0.1...
> > > * TCP_NODELAY set
> > > * Connected to localhost (127.0.0.1) port 8888 (#0)
> > > * STATE: WAITCONNECT => SENDPROTOCONNECT handle 0x600057930; line
> > > 1579
> > > (connection #0)
> > > * Marked for [keep alive]: HTTP default
> > > * STATE: SENDPROTOCONNECT => DO handle 0x600057930; line 1597
> > > (connection
> > > #0)
> > > > GET /delay/3 HTTP/1.1
> > > > Host: localhost:8888
> > > > User-Agent: curl/7.54.1
> > > > Accept: */*
> > > >
> > >
> > > * STATE: DO => DO_DONE handle 0x600057930; line 1676 (connection
> > > #0)
> > > * STATE: DO_DONE => WAITPERFORM handle 0x600057930; line 1801
> > > (connection
> > > #0)
> > > * STATE: WAITPERFORM => PERFORM handle 0x600057930; line 1811
> > > (connection
> > > #0)
> > > * STATE: PERFORM => DONE handle 0x600057930; line 1980 (connection
> > > #0)
> > > * multi_done
> > > * Empty reply from server
> > > * Connection #0 to host localhost left intact
> > > * Expire cleared
> > > *curl: (52) Empty reply from server*
> > >
> > > A bug in the example proxy? In HttpCore? Both? Or something missing
> > > in the
> > > implementation of the example async proxy?
> > >
> > > Thoughts?
> > >
> > > Thank you,
> > > Gary
> > >
>
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