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 20a7dc9240.
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url::set_host_ipv4

Set the host to an address.

Synopsis
url&
set_host_ipv4(
    ipv4_address const& addr);
Description

The host is set to the specified IPv4 address. The host type is host_type::ipv4.

Example
assert( url("http://www.example.com").set_host_ipv4( ipv4_address( "127.0.0.1" ) ).buffer() == "http://127.0.0.1" );
Complexity

Linear in this->size().

Postconditions
this->has_authority() == true && this->host_ipv4_address() == addr && this->host_type() == host_type::ipv4
Exception Safety

Strong guarantee. Calls to allocate may throw.

Parameters

Name

Description

addr

The address to set.

BNF
IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet

dec-octet   = DIGIT                 ; 0-9
            / %x31-39 DIGIT         ; 10-99
            / "1" 2DIGIT            ; 100-199
            / "2" %x30-34 DIGIT     ; 200-249
            / "25" %x30-35          ; 250-255
Specification
See Also

set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv6, set_host_ipvfuture, set_host_name.


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