---
name: "Sisimai::RFC791"
section: "3pm"
platform: "linux"
package: "libsisimai-perl"
version: "5.3.0-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Sisimai::RFC791"
---

# Sisimai::RFC791(3pm)

IP related class

## NAME

Sisimai::RFC791 - IP related class

## SYNOPSIS

```
    use Sisimai::RFC791;
    my $p = Sisimai::RFC791->find("mx7.example.jp:[192.0.2.27]"); # ["192.0.2.27"]
```

## DESCRIPTION

`"Sisimai::RFC791"` is a class related to IP

## CLASS METHODS

### "is\_ipv4address(String)"

`"is_ipv4address"` method returns 1 if the argument is an valid IPv4 address.

```
    print Sisimai::RFC791->is_ipv4address("192.0.2.25");   # 1
    print Sisimai::RFC791->is_ipv4address("123.456.78.9"); # 0
```

### "find(String)"

`"find"` method return all the IPv4 address found in the given string.

```
    my $v = "connection refused from 192.0.2.1, DNSBL returned 127.0.0.2";
    my $p = Sisimai::RFC791->find($v); # ["192.0.2.1", "127.0.0.2"]
```

## AUTHOR

azumakuniyuki

## COPYRIGHT

Copyright (C) 2024 azumakuniyuki, All rights reserved.

## LICENSE

This software is distributed under The BSD 2-Clause License.