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Net::HTTP::NB blocks on connect()

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#68 4 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
perl
Domain
networking

Research direction

Start at the Net::HTTP::NB->new entry point with Blocking => 0 and reproduce the reported strace showing connect() returning synchronously. Trace how the blocking option is applied during socket setup, then establish whether non-blocking connect() is expected or identify the change and regression coverage needed to make it so.

Written by the indexing model from the issue text.

Description

Saw this in an strace:

socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) = 3<TCP:[4870277]>
ioctl(3<TCP:[4870277]>, TCGETS, 0x7ea8924c) = -1 ENOTTY (Inappropriate ioctl for
 device)
_llseek(3<TCP:[4870277]>, 0, 0x7ea892a8, SEEK_CUR) = -1 ESPIPE (Illegal seek)
ioctl(3<TCP:[4870277]>, TCGETS, 0x7ea8924c) = -1 ENOTTY (Inappropriate ioctl for
 device)
_llseek(3<TCP:[4870277]>, 0, 0x7ea892a8, SEEK_CUR) = -1 ESPIPE (Illegal seek)
fcntl64(3<TCP:[4870277]>, F_SETFD, FD_CLOEXEC) = 0
connect(3<TCP:[4870277]>, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_
addr("208.74.123.84")}, 16) = 0

This comes from just calling:

my $s = Net::HTTP::NB->new(
    Host => 'cpanel.net',
    Blocking => 0,
) or die;

Is this a bug, or a known part of the design? Is there any way to get a non-blocking connect()?

Dominant language
Perl
Stars
20
Forks
27
No merged PRs in 30d

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