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- <article class="main-content">
- <section class="section">
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- <h1>NetworkReachabilityManager</h1>
- <div class="declaration">
- <div class="language">
- <pre class="highlight"><code><span class="kd">public</span> <span class="kd">class</span> <span class="kt">NetworkReachabilityManager</span></code></pre>
- </div>
- </div>
- <p>The <code>NetworkReachabilityManager</code> class listens for reachability changes of hosts and addresses for both WWAN and
- WiFi network interfaces.</p>
- <p>Reachability can be used to determine background information about why a network operation failed, or to retry
- network requests when a connection is established. It should not be used to prevent a user from initiating a network
- request, as it’s possible that an initial request may be required to establish reachability.</p>
- </div>
- </section>
- <section class="section">
- <div class="section-content">
- <div class="task-group">
- <ul class="item-container">
- <li class="item">
- <div>
- <code>
- <a name="/s:9Alamofire26NetworkReachabilityManagerC0bC6StatusO"></a>
- <a name="//apple_ref/swift/Enum/NetworkReachabilityStatus" class="dashAnchor"></a>
- <a class="token" href="#/s:9Alamofire26NetworkReachabilityManagerC0bC6StatusO">NetworkReachabilityStatus</a>
- </code>
- </div>
- <div class="height-container">
- <div class="pointer-container"></div>
- <section class="section">
- <div class="pointer"></div>
- <div class="abstract">
- <p>Defines the various states of network reachability.</p>
- <ul>
- <li>unknown: It is unknown whether the network is reachable.</li>
- <li>notReachable: The network is not reachable.</li>
- <li>reachable: The network is reachable.</li>
- </ul>
- <a href="../Classes/NetworkReachabilityManager/NetworkReachabilityStatus.html" class="slightly-smaller">See more</a>
- </div>
- <div class="declaration">
- <h4>Declaration</h4>
- <div class="language">
- <p class="aside-title">Swift</p>
- <pre class="highlight"><code><span class="kd">public</span> <span class="kd">enum</span> <span class="kt">NetworkReachabilityStatus</span></code></pre>
- </div>
- </div>
- </section>
- </div>
- </li>
- <li class="item">
- <div>
- <code>
- <a name="/s:9Alamofire26NetworkReachabilityManagerC14ConnectionTypeO"></a>
- <a name="//apple_ref/swift/Enum/ConnectionType" class="dashAnchor"></a>
- <a class="token" href="#/s:9Alamofire26NetworkReachabilityManagerC14ConnectionTypeO">ConnectionType</a>
- </code>
- </div>
- <div class="height-container">
- <div class="pointer-container"></div>
- <section class="section">
- <div class="pointer"></div>
- <div class="abstract">
- <p>Defines the various connection types detected by reachability flags.</p>
- <ul>
- <li>ethernetOrWiFi: The connection type is either over Ethernet or WiFi.</li>
- <li>wwan: The connection type is a WWAN connection.</li>
- </ul>
- <a href="../Classes/NetworkReachabilityManager/ConnectionType.html" class="slightly-smaller">See more</a>
- </div>
- <div class="declaration">
- <h4>Declaration</h4>
- <div class="language">
- <p class="aside-title">Swift</p>
- <pre class="highlight"><code><span class="kd">public</span> <span class="kd">enum</span> <span class="kt">ConnectionType</span></code></pre>
- </div>
- </div>
- </section>
- </div>
- </li>
- <li class="item">
- <div>
- <code>
- <a name="/s:9Alamofire26NetworkReachabilityManagerC8Listenera"></a>
- <a name="//apple_ref/swift/Alias/Listener" class="dashAnchor"></a>
- <a class="token" href="#/s:9Alamofire26NetworkReachabilityManagerC8Listenera">Listener</a>
- </code>
- </div>
- <div class="height-container">
- <div class="pointer-container"></div>
- <section class="section">
- <div class="pointer"></div>
- <div class="abstract">
- <p>A closure executed when the network reachability status changes. The closure takes a single argument: the
- network reachability status.</p>
- </div>
- <div class="declaration">
- <h4>Declaration</h4>
- <div class="language">
- <p class="aside-title">Swift</p>
- <pre class="highlight"><code><span class="kd">public</span> <span class="kd">typealias</span> <span class="kt">Listener</span> <span class="o">=</span> <span class="p">(</span><span class="kt"><a href="../Classes/NetworkReachabilityManager/NetworkReachabilityStatus.html">NetworkReachabilityStatus</a></span><span class="p">)</span> <span class="o">-></span> <span class="kt">Void</span></code></pre>
- </div>
- </div>
- </section>
- </div>
- </li>
- </ul>
- </div>
- <div class="task-group">
- <div class="task-name-container">
- <a name="/Properties"></a>
- <a name="//apple_ref/swift/Section/Properties" class="dashAnchor"></a>
- <a href="#/Properties">
- <h3 class="section-name">Properties</h3>
- </a>
- </div>
- <ul class="item-container">
- <li class="item">
- <div>
- <code>
- <a name="/s:9Alamofire26NetworkReachabilityManagerC11isReachableSbv"></a>
- <a name="//apple_ref/swift/Property/isReachable" class="dashAnchor"></a>
- <a class="token" href="#/s:9Alamofire26NetworkReachabilityManagerC11isReachableSbv">isReachable</a>
- </code>
- </div>
- <div class="height-container">
- <div class="pointer-container"></div>
- <section class="section">
- <div class="pointer"></div>
- <div class="abstract">
- <p>Whether the network is currently reachable.</p>
- </div>
- <div class="declaration">
- <h4>Declaration</h4>
- <div class="language">
- <p class="aside-title">Swift</p>
- <pre class="highlight"><code><span class="kd">public</span> <span class="k">var</span> <span class="nv">isReachable</span><span class="p">:</span> <span class="kt">Bool</span></code></pre>
- </div>
- </div>
- </section>
- </div>
- </li>
- <li class="item">
- <div>
- <code>
- <a name="/s:9Alamofire26NetworkReachabilityManagerC17isReachableOnWWANSbv"></a>
- <a name="//apple_ref/swift/Property/isReachableOnWWAN" class="dashAnchor"></a>
- <a class="token" href="#/s:9Alamofire26NetworkReachabilityManagerC17isReachableOnWWANSbv">isReachableOnWWAN</a>
- </code>
- </div>
- <div class="height-container">
- <div class="pointer-container"></div>
- <section class="section">
- <div class="pointer"></div>
- <div class="abstract">
- <p>Whether the network is currently reachable over the WWAN interface.</p>
- </div>
- <div class="declaration">
- <h4>Declaration</h4>
- <div class="language">
- <p class="aside-title">Swift</p>
- <pre class="highlight"><code><span class="kd">public</span> <span class="k">var</span> <span class="nv">isReachableOnWWAN</span><span class="p">:</span> <span class="kt">Bool</span></code></pre>
- </div>
- </div>
- </section>
- </div>
- </li>
- <li class="item">
- <div>
- <code>
- <a name="/s:9Alamofire26NetworkReachabilityManagerC27isReachableOnEthernetOrWiFiSbv"></a>
- <a name="//apple_ref/swift/Property/isReachableOnEthernetOrWiFi" class="dashAnchor"></a>
- <a class="token" href="#/s:9Alamofire26NetworkReachabilityManagerC27isReachableOnEthernetOrWiFiSbv">isReachableOnEthernetOrWiFi</a>
- </code>
- </div>
- <div class="height-container">
- <div class="pointer-container"></div>
- <section class="section">
- <div class="pointer"></div>
- <div class="abstract">
- <p>Whether the network is currently reachable over Ethernet or WiFi interface.</p>
- </div>
- <div class="declaration">
- <h4>Declaration</h4>
- <div class="language">
- <p class="aside-title">Swift</p>
- <pre class="highlight"><code><span class="kd">public</span> <span class="k">var</span> <span class="nv">isReachableOnEthernetOrWiFi</span><span class="p">:</span> <span class="kt">Bool</span></code></pre>
- </div>
- </div>
- </section>
- </div>
- </li>
- <li class="item">
- <div>
- <code>
- <a name="/s:9Alamofire26NetworkReachabilityManagerC07networkC6StatusAC0bcF0Ov"></a>
- <a name="//apple_ref/swift/Property/networkReachabilityStatus" class="dashAnchor"></a>
- <a class="token" href="#/s:9Alamofire26NetworkReachabilityManagerC07networkC6StatusAC0bcF0Ov">networkReachabilityStatus</a>
- </code>
- </div>
- <div class="height-container">
- <div class="pointer-container"></div>
- <section class="section">
- <div class="pointer"></div>
- <div class="abstract">
- <p>The current network reachability status.</p>
- </div>
- <div class="declaration">
- <h4>Declaration</h4>
- <div class="language">
- <p class="aside-title">Swift</p>
- <pre class="highlight"><code><span class="kd">public</span> <span class="k">var</span> <span class="nv">networkReachabilityStatus</span><span class="p">:</span> <span class="kt"><a href="../Classes/NetworkReachabilityManager/NetworkReachabilityStatus.html">NetworkReachabilityStatus</a></span></code></pre>
- </div>
- </div>
- </section>
- </div>
- </li>
- <li class="item">
- <div>
- <code>
- <a name="/s:9Alamofire26NetworkReachabilityManagerC13listenerQueueSo08DispatchF0Cv"></a>
- <a name="//apple_ref/swift/Property/listenerQueue" class="dashAnchor"></a>
- <a class="token" href="#/s:9Alamofire26NetworkReachabilityManagerC13listenerQueueSo08DispatchF0Cv">listenerQueue</a>
- </code>
- </div>
- <div class="height-container">
- <div class="pointer-container"></div>
- <section class="section">
- <div class="pointer"></div>
- <div class="abstract">
- <p>The dispatch queue to execute the <code><a href="../Classes/NetworkReachabilityManager.html#/s:9Alamofire26NetworkReachabilityManagerC8listeneryAC0bC6StatusOcSgv">listener</a></code> closure on.</p>
- </div>
- <div class="declaration">
- <h4>Declaration</h4>
- <div class="language">
- <p class="aside-title">Swift</p>
- <pre class="highlight"><code><span class="kd">public</span> <span class="k">var</span> <span class="nv">listenerQueue</span><span class="p">:</span> <span class="kt">DispatchQueue</span> <span class="o">=</span> <span class="kt">DispatchQueue</span><span class="o">.</span><span class="n">main</span></code></pre>
- </div>
- </div>
- </section>
- </div>
- </li>
- <li class="item">
- <div>
- <code>
- <a name="/s:9Alamofire26NetworkReachabilityManagerC8listeneryAC0bC6StatusOcSgv"></a>
- <a name="//apple_ref/swift/Property/listener" class="dashAnchor"></a>
- <a class="token" href="#/s:9Alamofire26NetworkReachabilityManagerC8listeneryAC0bC6StatusOcSgv">listener</a>
- </code>
- </div>
- <div class="height-container">
- <div class="pointer-container"></div>
- <section class="section">
- <div class="pointer"></div>
- <div class="abstract">
- <p>A closure executed when the network reachability status changes.</p>
- </div>
- <div class="declaration">
- <h4>Declaration</h4>
- <div class="language">
- <p class="aside-title">Swift</p>
- <pre class="highlight"><code><span class="kd">public</span> <span class="k">var</span> <span class="nv">listener</span><span class="p">:</span> <span class="kt"><a href="../Classes/NetworkReachabilityManager.html#/s:9Alamofire26NetworkReachabilityManagerC8Listenera">Listener</a></span><span class="p">?</span></code></pre>
- </div>
- </div>
- </section>
- </div>
- </li>
- </ul>
- </div>
- <div class="task-group">
- <div class="task-name-container">
- <a name="/Initialization"></a>
- <a name="//apple_ref/swift/Section/Initialization" class="dashAnchor"></a>
- <a href="#/Initialization">
- <h3 class="section-name">Initialization</h3>
- </a>
- </div>
- <ul class="item-container">
- <li class="item">
- <div>
- <code>
- <a name="/s:9Alamofire26NetworkReachabilityManagerCACSgSS4host_tcfc"></a>
- <a name="//apple_ref/swift/Method/init(host:)" class="dashAnchor"></a>
- <a class="token" href="#/s:9Alamofire26NetworkReachabilityManagerCACSgSS4host_tcfc">init(host:)</a>
- </code>
- </div>
- <div class="height-container">
- <div class="pointer-container"></div>
- <section class="section">
- <div class="pointer"></div>
- <div class="abstract">
- <p>Creates a <code>NetworkReachabilityManager</code> instance with the specified host.</p>
- </div>
- <div class="declaration">
- <h4>Declaration</h4>
- <div class="language">
- <p class="aside-title">Swift</p>
- <pre class="highlight"><code><span class="kd">public</span> <span class="n">convenience</span> <span class="nf">init</span><span class="p">?(</span><span class="nv">host</span><span class="p">:</span> <span class="kt">String</span><span class="p">)</span></code></pre>
- </div>
- </div>
- <div>
- <h4>Parameters</h4>
- <table class="graybox">
- <tbody>
- <tr>
- <td>
- <code>
- <em>host</em>
- </code>
- </td>
- <td>
- <div>
- <p>The host used to evaluate network reachability.</p>
- </div>
- </td>
- </tr>
- </tbody>
- </table>
- </div>
- <div>
- <h4>Return Value</h4>
- <p>The new <code>NetworkReachabilityManager</code> instance.</p>
- </div>
- </section>
- </div>
- </li>
- <li class="item">
- <div>
- <code>
- <a name="/s:9Alamofire26NetworkReachabilityManagerCACSgycfc"></a>
- <a name="//apple_ref/swift/Method/init()" class="dashAnchor"></a>
- <a class="token" href="#/s:9Alamofire26NetworkReachabilityManagerCACSgycfc">init()</a>
- </code>
- </div>
- <div class="height-container">
- <div class="pointer-container"></div>
- <section class="section">
- <div class="pointer"></div>
- <div class="abstract">
- <p>Creates a <code>NetworkReachabilityManager</code> instance that monitors the address 0.0.0.0.</p>
- <p>Reachability treats the 0.0.0.0 address as a special token that causes it to monitor the general routing
- status of the device, both IPv4 and IPv6.</p>
- </div>
- <div class="declaration">
- <h4>Declaration</h4>
- <div class="language">
- <p class="aside-title">Swift</p>
- <pre class="highlight"><code><span class="kd">public</span> <span class="n">convenience</span> <span class="nf">init</span><span class="p">?()</span></code></pre>
- </div>
- </div>
- <div>
- <h4>Return Value</h4>
- <p>The new <code>NetworkReachabilityManager</code> instance.</p>
- </div>
- </section>
- </div>
- </li>
- </ul>
- </div>
- <div class="task-group">
- <div class="task-name-container">
- <a name="/Listening"></a>
- <a name="//apple_ref/swift/Section/Listening" class="dashAnchor"></a>
- <a href="#/Listening">
- <h3 class="section-name">Listening</h3>
- </a>
- </div>
- <ul class="item-container">
- <li class="item">
- <div>
- <code>
- <a name="/s:9Alamofire26NetworkReachabilityManagerC14startListeningSbyF"></a>
- <a name="//apple_ref/swift/Method/startListening()" class="dashAnchor"></a>
- <a class="token" href="#/s:9Alamofire26NetworkReachabilityManagerC14startListeningSbyF">startListening()</a>
- </code>
- </div>
- <div class="height-container">
- <div class="pointer-container"></div>
- <section class="section">
- <div class="pointer"></div>
- <div class="abstract">
- <p>Starts listening for changes in network reachability status.</p>
- </div>
- <div class="declaration">
- <h4>Declaration</h4>
- <div class="language">
- <p class="aside-title">Swift</p>
- <pre class="highlight"><code><span class="kd">public</span> <span class="kd">func</span> <span class="nf">startListening</span><span class="p">()</span> <span class="o">-></span> <span class="kt">Bool</span></code></pre>
- </div>
- </div>
- <div>
- <h4>Return Value</h4>
- <p><code>true</code> if listening was started successfully, <code>false</code> otherwise.</p>
- </div>
- </section>
- </div>
- </li>
- <li class="item">
- <div>
- <code>
- <a name="/s:9Alamofire26NetworkReachabilityManagerC13stopListeningyyF"></a>
- <a name="//apple_ref/swift/Method/stopListening()" class="dashAnchor"></a>
- <a class="token" href="#/s:9Alamofire26NetworkReachabilityManagerC13stopListeningyyF">stopListening()</a>
- </code>
- </div>
- <div class="height-container">
- <div class="pointer-container"></div>
- <section class="section">
- <div class="pointer"></div>
- <div class="abstract">
- <p>Stops listening for changes in network reachability status.</p>
- </div>
- <div class="declaration">
- <h4>Declaration</h4>
- <div class="language">
- <p class="aside-title">Swift</p>
- <pre class="highlight"><code><span class="kd">public</span> <span class="kd">func</span> <span class="nf">stopListening</span><span class="p">()</span></code></pre>
- </div>
- </div>
- </section>
- </div>
- </li>
- </ul>
- </div>
- </div>
- </section>
- </article>
- </div>
- <section class="footer">
- <p>© 2017 <a class="link" href="http://alamofire.org/" target="_blank" rel="external">Alamofire Software Foundation</a>. All rights reserved. (Last updated: 2017-12-03)</p>
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