Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for a snapshot of the master branch, built from commit e70692e4d8.
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url_base::host

(Inherited from url_view_base)

Return the host.

Synopsis
template<
    class StringToken = string_token::return_string>
StringToken::result_type
host(
    StringToken&& token = {}) const;
Description

This function returns the host portion of the authority as a string, or the empty string if there is no authority. Any percent-escapes in the string are decoded first.

Example
assert( url_view( "https://www%2droot.example.com/" ).host() == "www-root.example.com" );
Complexity

Linear in this->host().size().

Exception Safety

Calls to allocate may throw.

BNF
host        = IP-literal / IPv4address / reg-name

IP-literal  = "[" ( IPv6address / IPvFuture  ) "]"

reg-name    = *( unreserved / pct-encoded / "-" / ".")
Specification

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