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| <h2 title="Enum ConnectivityState" class="title">Enum ConnectivityState</h2> |
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| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang" class="externalLink">java.lang.Enum</a><<a href="ConnectivityState.html" title="enum in io.grpc">ConnectivityState</a>></li> |
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| <pre><a href="ExperimentalApi.html" title="annotation in io.grpc">@ExperimentalApi</a>("https://github.com/grpc/grpc-java/issues/4359") |
| public enum <span class="typeNameLabel">ConnectivityState</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang" class="externalLink">Enum</a><<a href="ConnectivityState.html" title="enum in io.grpc">ConnectivityState</a>></pre> |
| <div class="block">The connectivity states.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="https://github.com/grpc/grpc/blob/master/doc/connectivity-semantics-and-api.md"> |
| more information</a></dd> |
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| </tr> |
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| <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CONNECTING">CONNECTING</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">The channel is trying to establish a connection and is waiting to make progress on one of the |
| steps involved in name resolution, TCP connection establishment or TLS handshake.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IDLE">IDLE</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">This is the state where the channel is not even trying to create a connection because of a |
| lack of new or pending RPCs.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#READY">READY</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">The channel has successfully established a connection all the way through TLS handshake (or |
| equivalent) and all subsequent attempt to communicate have succeeded (or are pending without |
| any known failure ).</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SHUTDOWN">SHUTDOWN</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">This channel has started shutting down.</div> |
| </td> |
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| <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#TRANSIENT_FAILURE">TRANSIENT_FAILURE</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">There has been some transient failure (such as a TCP 3-way handshake timing out or a socket |
| error).</div> |
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| <td class="colFirst"><code>static <a href="ConnectivityState.html" title="enum in io.grpc">ConnectivityState</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#valueOf(java.lang.String)">valueOf</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> name)</code></th> |
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| <div class="block">Returns the enum constant of this type with the specified name.</div> |
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| <td class="colFirst"><code>static <a href="ConnectivityState.html" title="enum in io.grpc">ConnectivityState</a>[]</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#values()">values</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns an array containing the constants of this enum type, in |
| the order they are declared.</div> |
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| <a id="CONNECTING"> |
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| <h4>CONNECTING</h4> |
| <pre>public static final <a href="ConnectivityState.html" title="enum in io.grpc">ConnectivityState</a> CONNECTING</pre> |
| <div class="block">The channel is trying to establish a connection and is waiting to make progress on one of the |
| steps involved in name resolution, TCP connection establishment or TLS handshake. This may be |
| used as the initial state for channels upon creation.</div> |
| </li> |
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| <a id="READY"> |
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| <h4>READY</h4> |
| <pre>public static final <a href="ConnectivityState.html" title="enum in io.grpc">ConnectivityState</a> READY</pre> |
| <div class="block">The channel has successfully established a connection all the way through TLS handshake (or |
| equivalent) and all subsequent attempt to communicate have succeeded (or are pending without |
| any known failure ).</div> |
| </li> |
| </ul> |
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| <h4>TRANSIENT_FAILURE</h4> |
| <pre>public static final <a href="ConnectivityState.html" title="enum in io.grpc">ConnectivityState</a> TRANSIENT_FAILURE</pre> |
| <div class="block">There has been some transient failure (such as a TCP 3-way handshake timing out or a socket |
| error). Channels in this state will eventually switch to the CONNECTING state and try to |
| establish a connection again. Since retries are done with exponential backoff, channels that |
| fail to connect will start out spending very little time in this state but as the attempts |
| fail repeatedly, the channel will spend increasingly large amounts of time in this state. For |
| many non-fatal failures (e.g., TCP connection attempts timing out because the server is not |
| yet available), the channel may spend increasingly large amounts of time in this state.</div> |
| </li> |
| </ul> |
| <a id="IDLE"> |
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| </a> |
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| <li class="blockList"> |
| <h4>IDLE</h4> |
| <pre>public static final <a href="ConnectivityState.html" title="enum in io.grpc">ConnectivityState</a> IDLE</pre> |
| <div class="block">This is the state where the channel is not even trying to create a connection because of a |
| lack of new or pending RPCs. New RPCs MAY be created in this state. Any attempt to start an |
| RPC on the channel will push the channel out of this state to connecting. When there has been |
| no RPC activity on a channel for a configurable IDLE_TIMEOUT, i.e., no new or pending (active) |
| RPCs for this period, channels that are READY or CONNECTING switch to IDLE. Additionaly, |
| channels that receive a GOAWAY when there are no active or pending RPCs should also switch to |
| IDLE to avoid connection overload at servers that are attempting to shed connections.</div> |
| </li> |
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| <h4>SHUTDOWN</h4> |
| <pre>public static final <a href="ConnectivityState.html" title="enum in io.grpc">ConnectivityState</a> SHUTDOWN</pre> |
| <div class="block">This channel has started shutting down. Any new RPCs should fail immediately. Pending RPCs |
| may continue running till the application cancels them. Channels may enter this state either |
| because the application explicitly requested a shutdown or if a non-recoverable error has |
| happened during attempts to connect communicate . (As of 6/12/2015, there are no known errors |
| (while connecting or communicating) that are classified as non-recoverable) Channels that |
| enter this state never leave this state.</div> |
| </li> |
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| <h4>values</h4> |
| <pre class="methodSignature">public static <a href="ConnectivityState.html" title="enum in io.grpc">ConnectivityState</a>[] values()</pre> |
| <div class="block">Returns an array containing the constants of this enum type, in |
| the order they are declared. This method may be used to iterate |
| over the constants as follows: |
| <pre> |
| for (ConnectivityState c : ConnectivityState.values()) |
| System.out.println(c); |
| </pre></div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an array containing the constants of this enum type, in the order they are declared</dd> |
| </dl> |
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| <h4>valueOf</h4> |
| <pre class="methodSignature">public static <a href="ConnectivityState.html" title="enum in io.grpc">ConnectivityState</a> valueOf​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> name)</pre> |
| <div class="block">Returns the enum constant of this type with the specified name. |
| The string must match <i>exactly</i> an identifier used to declare an |
| enum constant in this type. (Extraneous whitespace characters are |
| not permitted.)</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - the name of the enum constant to be returned.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the enum constant with the specified name</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang" class="externalLink">IllegalArgumentException</a></code> - if this enum type has no constant with the specified name</dd> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang" class="externalLink">NullPointerException</a></code> - if the argument is null</dd> |
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