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| <h2 title="Interface MessageHandler" class="title">Interface MessageHandler</h2> |
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| <dd><a href="../../jakarta/websocket/MessageHandler.Partial.html" title="interface in jakarta.websocket">MessageHandler.Partial</a><T>, <a href="../../jakarta/websocket/MessageHandler.Whole.html" title="interface in jakarta.websocket">MessageHandler.Whole</a><T></dd> |
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| <pre>public interface <span class="typeNameLabel">MessageHandler</span></pre> |
| <div class="block">Developers implement MessageHandlers in order to receive incoming messages during a web socket conversation. Each web |
| socket session uses no more than one thread at a time to call its MessageHandlers. This means that, provided each |
| message handler instance is used to handle messages for one web socket session, at most one thread at a time can be |
| calling any of its methods. Developers who wish to handle messages from multiple clients within the same message |
| handlers may do so by adding the same instance as a handler on each of the Session objects for the clients. In that |
| case, they will need to code with the possibility of their MessageHandler being called concurrently by multiple |
| threads, each one arising from a different client session. |
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| See <a href="../../jakarta/websocket/Endpoint.html" title="class in jakarta.websocket"><code>Endpoint</code></a> for a usage example.</div> |
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| <td class="colFirst"><code>static interface </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/websocket/MessageHandler.Partial.html" title="interface in jakarta.websocket">MessageHandler.Partial</a><<a href="../../jakarta/websocket/MessageHandler.Partial.html" title="type parameter in MessageHandler.Partial">T</a>></span></code> |
| <div class="block">This kind of handler is notified by the implementation as it becomes ready to deliver parts of a whole message.</div> |
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| <td class="colFirst"><code>static interface </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/websocket/MessageHandler.Whole.html" title="interface in jakarta.websocket">MessageHandler.Whole</a><<a href="../../jakarta/websocket/MessageHandler.Whole.html" title="type parameter in MessageHandler.Whole">T</a>></span></code> |
| <div class="block">This kind of handler is notified by the container on arrival of a complete message.</div> |
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