[#boost-urls-ipv4_address-max_str_len]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/ipv4_address.adoc[ipv4_address]::max_str_len
:relfileprefix: ../../../
:mrdocs:


The number of characters in the longest possible IPv4 string.

== Synopsis


Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/ipv4_address.hpp#L60[boost/url/ipv4_address.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
inline constexpr static
std::size_t max_str_len = 15;
----

== Description


The longest ipv4 address string is "255.255.255.255".





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