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| org.apache.http.impl</FONT> |
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| Class DefaultConnectionReuseStrategy</H2> |
| <PRE> |
| <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A> |
| <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.http.impl.DefaultConnectionReuseStrategy</B> |
| </PRE> |
| <DL> |
| <DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/apache/http/ConnectionReuseStrategy.html" title="interface in org.apache.http">ConnectionReuseStrategy</A></DD> |
| </DL> |
| <HR> |
| <DL> |
| <DT><PRE><FONT SIZE="-1"><A HREF="../../../../org/apache/http/annotation/Immutable.html" title="annotation in org.apache.http.annotation">@Immutable</A> |
| </FONT>public class <B>DefaultConnectionReuseStrategy</B><DT>extends <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A><DT>implements <A HREF="../../../../org/apache/http/ConnectionReuseStrategy.html" title="interface in org.apache.http">ConnectionReuseStrategy</A></DL> |
| </PRE> |
| |
| <P> |
| Default implementation of a strategy deciding about connection re-use. |
| The default implementation first checks some basics, for example |
| whether the connection is still open or whether the end of the |
| request entity can be determined without closing the connection. |
| If these checks pass, the tokens in the <code>Connection</code> header will |
| be examined. In the absence of a <code>Connection</code> header, the |
| non-standard but commonly used <code>Proxy-Connection</code> header takes |
| it's role. A token <code>close</code> indicates that the connection cannot |
| be reused. If there is no such token, a token <code>keep-alive</code> |
| indicates that the connection should be re-used. If neither token is found, |
| or if there are no <code>Connection</code> headers, the default policy for |
| the HTTP version is applied. Since <code>HTTP/1.1</code>, connections are |
| re-used by default. Up until <code>HTTP/1.0</code>, connections are not |
| re-used by default. |
| <P> |
| |
| <P> |
| <DL> |
| <DT><B>Since:</B></DT> |
| <DD>4.0</DD> |
| </DL> |
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| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD><CODE><B><A HREF="../../../../org/apache/http/impl/DefaultConnectionReuseStrategy.html#DefaultConnectionReuseStrategy()">DefaultConnectionReuseStrategy</A></B>()</CODE> |
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| <CODE>protected <A HREF="../../../../org/apache/http/TokenIterator.html" title="interface in org.apache.http">TokenIterator</A></CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../org/apache/http/impl/DefaultConnectionReuseStrategy.html#createTokenIterator(org.apache.http.HeaderIterator)">createTokenIterator</A></B>(<A HREF="../../../../org/apache/http/HeaderIterator.html" title="interface in org.apache.http">HeaderIterator</A> hit)</CODE> |
| |
| <BR> |
| Creates a token iterator from a header iterator.</TD> |
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| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> boolean</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../org/apache/http/impl/DefaultConnectionReuseStrategy.html#keepAlive(org.apache.http.HttpResponse, org.apache.http.protocol.HttpContext)">keepAlive</A></B>(<A HREF="../../../../org/apache/http/HttpResponse.html" title="interface in org.apache.http">HttpResponse</A> response, |
| <A HREF="../../../../org/apache/http/protocol/HttpContext.html" title="interface in org.apache.http.protocol">HttpContext</A> context)</CODE> |
| |
| <BR> |
| Decides whether a connection can be kept open after a request.</TD> |
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| <TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TH> |
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| |
| <A NAME="DefaultConnectionReuseStrategy()"><!-- --></A><H3> |
| DefaultConnectionReuseStrategy</H3> |
| <PRE> |
| public <B>DefaultConnectionReuseStrategy</B>()</PRE> |
| <DL> |
| </DL> |
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| <A NAME="keepAlive(org.apache.http.HttpResponse, org.apache.http.protocol.HttpContext)"><!-- --></A><H3> |
| keepAlive</H3> |
| <PRE> |
| public boolean <B>keepAlive</B>(<A HREF="../../../../org/apache/http/HttpResponse.html" title="interface in org.apache.http">HttpResponse</A> response, |
| <A HREF="../../../../org/apache/http/protocol/HttpContext.html" title="interface in org.apache.http.protocol">HttpContext</A> context)</PRE> |
| <DL> |
| <DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/http/ConnectionReuseStrategy.html#keepAlive(org.apache.http.HttpResponse, org.apache.http.protocol.HttpContext)">ConnectionReuseStrategy</A></CODE></B></DD> |
| <DD>Decides whether a connection can be kept open after a request. |
| If this method returns <code>false</code>, the caller MUST |
| close the connection to correctly comply with the HTTP protocol. |
| If it returns <code>true</code>, the caller SHOULD attempt to |
| keep the connection open for reuse with another request. |
| <br/> |
| 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. |
| <br/> |
| If the connection is already closed, <code>false</code> is returned. |
| The stale connection check MUST NOT be triggered by a |
| connection reuse strategy. |
| <P> |
| <DD><DL> |
| <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/http/ConnectionReuseStrategy.html#keepAlive(org.apache.http.HttpResponse, org.apache.http.protocol.HttpContext)">keepAlive</A></CODE> in interface <CODE><A HREF="../../../../org/apache/http/ConnectionReuseStrategy.html" title="interface in org.apache.http">ConnectionReuseStrategy</A></CODE></DL> |
| </DD> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>response</CODE> - The last response received over that connection.<DD><CODE>context</CODE> - the context in which the connection is being |
| used. |
| <DT><B>Returns:</B><DD><code>true</code> if the connection is allowed to be reused, or |
| <code>false</code> if it MUST NOT be reused</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="createTokenIterator(org.apache.http.HeaderIterator)"><!-- --></A><H3> |
| createTokenIterator</H3> |
| <PRE> |
| protected <A HREF="../../../../org/apache/http/TokenIterator.html" title="interface in org.apache.http">TokenIterator</A> <B>createTokenIterator</B>(<A HREF="../../../../org/apache/http/HeaderIterator.html" title="interface in org.apache.http">HeaderIterator</A> hit)</PRE> |
| <DL> |
| <DD>Creates a token iterator from a header iterator. |
| This method can be overridden to replace the implementation of |
| the token iterator. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>hit</CODE> - the header iterator |
| <DT><B>Returns:</B><DD>the token iterator</DL> |
| </DD> |
| </DL> |
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