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<title>Nine Nines: Upcoming changes in Ranch 2.0</title>
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<h1 class="lined-header"><span>Upcoming changes in Ranch 2.0</span></h1>
<p>The following changes will be done in Ranch 2.0. In most cases an alternative is already available in the most recent Ranch version.</p>
<ul><li>The function <code>ranch:start_listener/6</code> has been deprecated in favor of <code>ranch:start_listener/5</code>. The number of acceptors was removed and will be taken from the transport options.
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<li>The function <code>ranch:child_spec/6</code> has also been deprecated, in favor of <code>ranch:child_spec/5</code>.
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<li>The function <code>ranch:accept_ack/1</code> has been deprecated in favor of <code>ranch:handshake/1,2</code>.
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<li>The function <code>ranch:info/1,2</code> will return a map containing each listener's information rather than a list of key/values. The <code>num_acceptors</code> key will be removed.
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<li>The socket will no longer be passed to the protocol when starting it. It will be available as a return value from <code>ranch:handshake/1,2</code> only.
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<li>Starting from Ranch 2.0 it will no longer be allowed to pass Ranch options along with socket options as a proplist. The only forms allowed will be the <code>ranch:opts()</code> map or socket options as-is. The <code>ranch:opts()</code> map must be used in case socket options also use a map.
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<li>The <code>socket</code> option will be removed. A more viable solution is to define a custom transport module that returns a fresh socket when <code>Transport:listen/1</code> is called.
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