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diff --git a/src/org/apache/http/params/CoreConnectionPNames.java b/src/org/apache/http/params/CoreConnectionPNames.java
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+++ b/src/org/apache/http/params/CoreConnectionPNames.java
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+/*
+ * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/params/CoreConnectionPNames.java $
+ * $Revision: 576077 $
+ * $Date: 2007-09-16 04:50:22 -0700 (Sun, 16 Sep 2007) $
+ *
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+
+package org.apache.http.params;
+
+
+/**
+ * Defines parameter names for connections in HttpCore.
+ * 
+ * @version $Revision: 576077 $
+ * 
+ * @since 4.0
+ */
+public interface CoreConnectionPNames {
+
+    /**
+     * Defines the default socket timeout (<tt>SO_TIMEOUT</tt>) in milliseconds which is the 
+     * timeout for waiting for data. A timeout value of zero is interpreted as an infinite 
+     * timeout. This value is used when no socket timeout is set in the 
+     * method parameters. 
+     * <p>
+     * This parameter expects a value of type {@link Integer}.
+     * </p>
+     * @see java.net.SocketOptions#SO_TIMEOUT
+     */
+    public static final String SO_TIMEOUT = "http.socket.timeout"; 
+
+    /**
+     * Determines whether Nagle's algorithm is to be used. The Nagle's algorithm 
+     * tries to conserve bandwidth by minimizing the number of segments that are 
+     * sent. When applications wish to decrease network latency and increase 
+     * performance, they can disable Nagle's algorithm (that is enable TCP_NODELAY). 
+     * Data will be sent earlier, at the cost of an increase in bandwidth consumption. 
+     * <p>
+     * This parameter expects a value of type {@link Boolean}.
+     * </p>
+     * @see java.net.SocketOptions#TCP_NODELAY
+     */
+    public static final String TCP_NODELAY = "http.tcp.nodelay"; 
+
+    /**
+     * Determines the size of the internal socket buffer used to buffer data
+     * while receiving / transmitting HTTP messages.
+     * <p>
+     * This parameter expects a value of type {@link Integer}.
+     * </p>
+     */
+    public static final String SOCKET_BUFFER_SIZE = "http.socket.buffer-size"; 
+
+    /**
+     * Sets SO_LINGER with the specified linger time in seconds. The maximum timeout 
+     * value is platform specific. Value <tt>0</tt> implies that the option is disabled.
+     * Value <tt>-1</tt> implies that the JRE default is used. The setting only affects 
+     * socket close.  
+     * <p>
+     * This parameter expects a value of type {@link Integer}.
+     * </p>
+     * @see java.net.SocketOptions#SO_LINGER
+     */
+    public static final String SO_LINGER = "http.socket.linger"; 
+
+    /**
+     * Determines the timeout until a connection is etablished. A value of zero 
+     * means the timeout is not used. The default value is zero.
+     * <p>
+     * This parameter expects a value of type {@link Integer}.
+     * </p>
+     */
+    public static final String CONNECTION_TIMEOUT = "http.connection.timeout"; 
+
+    /**
+     * Determines whether stale connection check is to be used. Disabling 
+     * stale connection check may result in slight performance improvement 
+     * at the risk of getting an I/O error when executing a request over a
+     * connection that has been closed at the server side. 
+     * <p>
+     * This parameter expects a value of type {@link Boolean}.
+     * </p>
+     */
+    public static final String STALE_CONNECTION_CHECK = "http.connection.stalecheck"; 
+
+    /**
+     * Determines the maximum line length limit. If set to a positive value, any HTTP 
+     * line exceeding this limit will cause an IOException. A negative or zero value
+     * will effectively disable the check.
+     * <p>
+     * This parameter expects a value of type {@link Integer}.
+     * </p>
+     */
+    public static final String MAX_LINE_LENGTH = "http.connection.max-line-length";
+    
+    /**
+     * Determines the maximum HTTP header count allowed. If set to a positive value, 
+     * the number of HTTP headers received from the data stream exceeding this limit 
+     * will cause an IOException. A negative or zero value will effectively disable 
+     * the check. 
+     * <p>
+     * This parameter expects a value of type {@link Integer}.
+     * </p>
+     */
+    public static final String MAX_HEADER_COUNT = "http.connection.max-header-count";
+
+}