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package org.apache.http;

import org.apache.http.protocol.HttpContext;

/**
 * Interface for deciding whether a connection can be re-used for
 * subsequent requests and should be kept alive.
 * 

* Implementations of this interface must be thread-safe. Access to shared * data must be synchronized as methods of this interface may be executed * from multiple threads. * * @since 4.0 */ public interface ConnectionReuseStrategy { /** * Decides whether a connection can be kept open after a request. * If this method returns {@code false}, the caller MUST * close the connection to correctly comply with the HTTP protocol. * If it returns {@code true}, the caller SHOULD attempt to * keep the connection open for reuse with another request. *

* One can use the HTTP context to retrieve additional objects that * may be relevant for the keep-alive strategy: the actual HTTP * connection, the original HTTP request, target host if known, * number of times the connection has been reused already and so on. *

*

* If the connection is already closed, {@code false} is returned. * The stale connection check MUST NOT be triggered by a * connection reuse strategy. *

* * @param response * The last response received over that connection. * @param context the context in which the connection is being * used. * * @return {@code true} if the connection is allowed to be reused, or * {@code false} if it MUST NOT be reused */ boolean keepAlive(HttpResponse response, HttpContext context); }




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