Re: [Chicken-janitors] #858: spiffy-request-vars' test shows "cannot write to socket - Broken pipe" at random

[Chicken Trac]

#858: spiffy-request-vars' test shows "cannot write to socket - Broken pipe" at
random
-----------------------------+----------------------------------------------
  Reporter:  mario           |       Owner:  mario                              
                     
      Type:  defect          |      Status:  assigned                           
                     
  Priority:  critical        |   Milestone:  4.8.0                              
                     
 Component:  core libraries  |     Version:  4.7.x                              
                     
Resolution:                  |    Keywords:  spiffy-request-vars, cannot write 
to socket, broken pipe
-----------------------------+----------------------------------------------

Comment(by mario):

 Thanks, Felix.  I've run the test case above with your patch applied to
 chicken.  It seems that it doesn't change much, unfortunately.  The client
 still pauses sometimes.  After the pauses, the server issues {{{Error:
 cannot write to socket - Broken pipe 4}}} messages and go on.

 The client still shows

 {{{
 send(4, "User-Agent", 10, 0)            = 10
 send(4, ": ", 2, 0)                     = 2
 send(4, "Chicken Scheme HTTP-client/0.5", 30, 0) = 30
 send(4, "\r\n", 2, 0)                   = 2
 send(4, "\r\n", 2, 0)                   = 2
 recv(4, 0xb70dc71c, 1024, 0)            = -1 EAGAIN (Resource temporarily
 unavailable)
 gettimeofday({1339504932, 16290}, NULL) = 0
 gettimeofday({1339504932, 16338}, NULL) = 0
 gettimeofday({1339504932, 16386}, NULL) = 0
 select(1024, [4], [], NULL, {60, 0}
 }}}

 when paused.

 I notice the pauses are much less frequent when the server is run with
 strace.

 I'm using 5247d0dde5762d7ae984746b4c4f617b8e60ba17

-- 
Ticket URL: <http://bugs.call-cc.org/ticket/858#comment:5>
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Chicken Scheme is a compiler for the Scheme programming language.