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      1 /*
      2  * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/params/CoreConnectionPNames.java $
      3  * $Revision: 576077 $
      4  * $Date: 2007-09-16 04:50:22 -0700 (Sun, 16 Sep 2007) $
      5  *
      6  * ====================================================================
      7  * Licensed to the Apache Software Foundation (ASF) under one
      8  * or more contributor license agreements.  See the NOTICE file
      9  * distributed with this work for additional information
     10  * regarding copyright ownership.  The ASF licenses this file
     11  * to you under the Apache License, Version 2.0 (the
     12  * "License"); you may not use this file except in compliance
     13  * with the License.  You may obtain a copy of the License at
     14  *
     15  *   http://www.apache.org/licenses/LICENSE-2.0
     16  *
     17  * Unless required by applicable law or agreed to in writing,
     18  * software distributed under the License is distributed on an
     19  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     20  * KIND, either express or implied.  See the License for the
     21  * specific language governing permissions and limitations
     22  * under the License.
     23  * ====================================================================
     24  *
     25  * This software consists of voluntary contributions made by many
     26  * individuals on behalf of the Apache Software Foundation.  For more
     27  * information on the Apache Software Foundation, please see
     28  * <http://www.apache.org/>.
     29  *
     30  */
     31 
     32 package org.apache.http.params;
     33 
     34 
     35 /**
     36  * Defines parameter names for connections in HttpCore.
     37  *
     38  * @version $Revision: 576077 $
     39  *
     40  * @since 4.0
     41  */
     42 public interface CoreConnectionPNames {
     43 
     44     /**
     45      * Defines the default socket timeout (<tt>SO_TIMEOUT</tt>) in milliseconds which is the
     46      * timeout for waiting for data. A timeout value of zero is interpreted as an infinite
     47      * timeout. This value is used when no socket timeout is set in the
     48      * method parameters.
     49      * <p>
     50      * This parameter expects a value of type {@link Integer}.
     51      * </p>
     52      * @see java.net.SocketOptions#SO_TIMEOUT
     53      */
     54     public static final String SO_TIMEOUT = "http.socket.timeout";
     55 
     56     /**
     57      * Determines whether Nagle's algorithm is to be used. The Nagle's algorithm
     58      * tries to conserve bandwidth by minimizing the number of segments that are
     59      * sent. When applications wish to decrease network latency and increase
     60      * performance, they can disable Nagle's algorithm (that is enable TCP_NODELAY).
     61      * Data will be sent earlier, at the cost of an increase in bandwidth consumption.
     62      * <p>
     63      * This parameter expects a value of type {@link Boolean}.
     64      * </p>
     65      * @see java.net.SocketOptions#TCP_NODELAY
     66      */
     67     public static final String TCP_NODELAY = "http.tcp.nodelay";
     68 
     69     /**
     70      * Determines the size of the internal socket buffer used to buffer data
     71      * while receiving / transmitting HTTP messages.
     72      * <p>
     73      * This parameter expects a value of type {@link Integer}.
     74      * </p>
     75      */
     76     public static final String SOCKET_BUFFER_SIZE = "http.socket.buffer-size";
     77 
     78     /**
     79      * Sets SO_LINGER with the specified linger time in seconds. The maximum timeout
     80      * value is platform specific. Value <tt>0</tt> implies that the option is disabled.
     81      * Value <tt>-1</tt> implies that the JRE default is used. The setting only affects
     82      * socket close.
     83      * <p>
     84      * This parameter expects a value of type {@link Integer}.
     85      * </p>
     86      * @see java.net.SocketOptions#SO_LINGER
     87      */
     88     public static final String SO_LINGER = "http.socket.linger";
     89 
     90     /**
     91      * Determines the timeout until a connection is etablished. A value of zero
     92      * means the timeout is not used. The default value is zero.
     93      * <p>
     94      * This parameter expects a value of type {@link Integer}.
     95      * </p>
     96      */
     97     public static final String CONNECTION_TIMEOUT = "http.connection.timeout";
     98 
     99     /**
    100      * Determines whether stale connection check is to be used. Disabling
    101      * stale connection check may result in slight performance improvement
    102      * at the risk of getting an I/O error when executing a request over a
    103      * connection that has been closed at the server side.
    104      * <p>
    105      * This parameter expects a value of type {@link Boolean}.
    106      * </p>
    107      */
    108     public static final String STALE_CONNECTION_CHECK = "http.connection.stalecheck";
    109 
    110     /**
    111      * Determines the maximum line length limit. If set to a positive value, any HTTP
    112      * line exceeding this limit will cause an IOException. A negative or zero value
    113      * will effectively disable the check.
    114      * <p>
    115      * This parameter expects a value of type {@link Integer}.
    116      * </p>
    117      */
    118     public static final String MAX_LINE_LENGTH = "http.connection.max-line-length";
    119 
    120     /**
    121      * Determines the maximum HTTP header count allowed. If set to a positive value,
    122      * the number of HTTP headers received from the data stream exceeding this limit
    123      * will cause an IOException. A negative or zero value will effectively disable
    124      * the check.
    125      * <p>
    126      * This parameter expects a value of type {@link Integer}.
    127      * </p>
    128      */
    129     public static final String MAX_HEADER_COUNT = "http.connection.max-header-count";
    130 
    131 }
    132