boost::urls::url::set_encoded_zone_id :: Boost Libraries Documentation

# boost::urls::url::set_encoded_zone_id

Set the zone ID for an IPv6 address (percent‐encoded).

## Synopsis

Declared in `<boost/url/url.hpp>`

    url&
    set_encoded_zone_id(pct_string_view const& s);

## Description

This function sets the zone ID for the host if the host is an IPv6 address. Escapes in the string are preserved, and reserved characters in the string are percent‐escaped in the result.

## Example

    assert( u.set_host_ipv6( ipv6_address( "fe80::1" ) ).set_encoded_zone_id( "eth0" ).buffer() == "https://[fe80::1%25eth0]" );

## Complexity

Linear in `this‐>size()`.

## Exception Safety

Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.

## Specification

- RFC 6874

## Return Value

`*this`

## Parameters

Name | Description
s | The zone ID to set.

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