---
name: "Net::HTTP::NB"
section: "3pm"
platform: "linux"
package: "perl-net-http"
version: "6.24-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/Net::HTTP::NB"
---

# Net::HTTP::NB(3pm)

Non-blocking HTTP client

## NAME

Net::HTTP::NB - Non-blocking HTTP client

## VERSION

version 6.24

## SYNOPSIS

```
 use Net::HTTP::NB;
 my $s = Net::HTTP::NB->new(Host => "www.perl.com") || die $@;
 $s->write_request(GET => "/");
 use IO::Select;
 my $sel = IO::Select->new($s);
 READ_HEADER: {
    die "Header timeout" unless $sel->can_read(10);
    my($code, $mess, %h) = $s->read_response_headers;
    redo READ_HEADER unless $code;
 }
 while (1) {
    die "Body timeout" unless $sel->can_read(10);
    my $buf;
    my $n = $s->read_entity_body($buf, 1024);
    last unless $n;
    print $buf;
 }
```

## DESCRIPTION

Same interface as `"Net::HTTP"` but it will never try multiple reads when the **read\_response\_headers()** or **read\_entity\_body()** methods are invoked.  This make it possible to multiplex multiple Net::HTTP::NB using select without risk blocking.

If **read\_response\_headers()** did not see enough data to complete the headers an empty list is returned.

If **read\_entity\_body()** did not see new entity data in its read the value -1 is returned.

## SEE ALSO

Net::HTTP

## AUTHOR

Gisle Aas \<gisle@activestate.com\>

## COPYRIGHT AND LICENSE

This software is copyright (c) 2001 by Gisle Aas.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.