[ID 20000218.002] timeout problem in IO::Socket

This is a bug report for perl from wmollenvanger@yahoo.com,
generated with the help of perlbug 1.26 running under perl 5.00503.


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[Please enter your report here]
The LWP library I'm using had problems with defined timeouts so I traced
it
back to IO::Socket::connect:

sub connect {
    @_ == 2 || @_ == 3 or croak 'usage: $fh->connect(NAME) or
$fh->connect(PORT, ADDR)';
    my $fh = shift;
    my $addr = @_ == 1 ? shift : sockaddr_in(@_);
    my $timeout = ${*$fh}{'io_socket_timeout'};
    local($SIG{ALRM}) = $timeout ? sub { undef $fh; }
                                 : $SIG{ALRM} || 'DEFAULT';

     eval {
        croak 'connect: Bad address'
            if(@_ == 2 && !defined $_[1]);

        if($timeout) {
            defined $Config{d_alarm} && defined alarm($timeout) or
                $timeout = 0;
        }

        my $ok = connect($fh, $addr);

        alarm(0)
            if($timeout);

        croak "connect: timeout"
            unless defined $fh;

        undef $fh unless $ok;
    };

    $fh;
}

Shouldn't the line were the signal handler is defined read:

local($SIG{ALRM}) = $timeout ? sub { undef $fh; die; }
                                 : $SIG{ALRM} || 'DEFAULT';


otherwise it will 'never' timeout on the connect() call.


Regards,

Wilfred.

[Please do not change anything below this line]
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---
Site configuration information for perl 5.00503:

Configured by root at Mon Aug 30 23:08:56 EDT 1999.

Summary of my perl5 (5.0 patchlevel 5 subversion 3) configuration:
  Platform:
    osname=linux, osvers=2.2.5-22smp, archname=i386-linux
    uname='linux porky.devel.redhat.com 2.2.5-22smp #1 smp wed jun 2
09:11:51 edt 1999 i686 unknown '
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=undef useperlio=undef d_sfio=undef
  Compiler:
    cc='cc', optimize='-O2', gccversion=egcs-2.91.66 19990314/Linux
(egcs-1.1.2
release)
    cppflags='-Dbool=char -DHAS_BOOL -I/usr/local/include'
    ccflags ='-Dbool=char -DHAS_BOOL -I/usr/local/include'
    stdchar='char', d_stdstdio=undef, usevfork=false
    intsize=4, longsize=4, ptrsize=4, doublesize=8
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    alignbytes=4, usemymalloc=n, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lnsl -ldl -lm -lc -lposix -lcrypt
    libc=, so=so, useshrplib=false, libperl=libperl.a
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynamic'

    cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'

Locally applied patches:


---
@INC for perl 5.00503:
    /usr/lib/perl5/5.00503/i386-linux
    /usr/lib/perl5/5.00503
    /usr/lib/perl5/site_perl/5.005/i386-linux
    /usr/lib/perl5/site_perl/5.005
    .

---
Environment for perl 5.00503:
    HOME=/export/home/wilfredm
    LANG=en_US
    LANGUAGE (unset)
    LC_ALL=en_US
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)

PATH=/usr/bin:/bin:/usr/X11R6/bin:/usr/local/bin:/opt/bin:/usr/X11R6/bin:/export/home/wilfredm/bin:/usr/local/ssh/bin:

    PERL_BADLANG (unset)
    SHELL=/bin/bash

• [ID 20000218.002] timeout problem in IO::Socket by Wilfred Mollenvanger
• Re: [ID 20000218.002] timeout problem in IO::Socket by Gisle Aas