Wed, 31 Dec 2014 07:22:50 +0100
Correct previous dual key logic pending first delivery installment.
1 /*
2 * ====================================================================
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 * ====================================================================
20 *
21 * This software consists of voluntary contributions made by many
22 * individuals on behalf of the Apache Software Foundation. For more
23 * information on the Apache Software Foundation, please see
24 * <http://www.apache.org/>.
25 *
26 */
28 package ch.boye.httpclientandroidlib;
30 import java.io.IOException;
32 /**
33 * A generic HTTP connection, useful on client and server side.
34 *
35 * @since 4.0
36 */
37 public interface HttpConnection {
39 /**
40 * Closes this connection gracefully.
41 * This method will attempt to flush the internal output
42 * buffer prior to closing the underlying socket.
43 * This method MUST NOT be called from a different thread to force
44 * shutdown of the connection. Use {@link #shutdown shutdown} instead.
45 */
46 public void close() throws IOException;
48 /**
49 * Checks if this connection is open.
50 * @return true if it is open, false if it is closed.
51 */
52 public boolean isOpen();
54 /**
55 * Checks whether this connection has gone down.
56 * Network connections may get closed during some time of inactivity
57 * for several reasons. The next time a read is attempted on such a
58 * connection it will throw an IOException.
59 * This method tries to alleviate this inconvenience by trying to
60 * find out if a connection is still usable. Implementations may do
61 * that by attempting a read with a very small timeout. Thus this
62 * method may block for a small amount of time before returning a result.
63 * It is therefore an <i>expensive</i> operation.
64 *
65 * @return <code>true</code> if attempts to use this connection are
66 * likely to succeed, or <code>false</code> if they are likely
67 * to fail and this connection should be closed
68 */
69 public boolean isStale();
71 /**
72 * Sets the socket timeout value.
73 *
74 * @param timeout timeout value in milliseconds
75 */
76 void setSocketTimeout(int timeout);
78 /**
79 * Returns the socket timeout value.
80 *
81 * @return positive value in milliseconds if a timeout is set,
82 * <code>0</code> if timeout is disabled or <code>-1</code> if
83 * timeout is undefined.
84 */
85 int getSocketTimeout();
87 /**
88 * Force-closes this connection.
89 * This is the only method of a connection which may be called
90 * from a different thread to terminate the connection.
91 * This method will not attempt to flush the transmitter's
92 * internal buffer prior to closing the underlying socket.
93 */
94 public void shutdown() throws IOException;
96 /**
97 * Returns a collection of connection metrics.
98 *
99 * @return HttpConnectionMetrics
100 */
101 HttpConnectionMetrics getMetrics();
103 }