1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
/*
* $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/conn/scheme/SocketFactory.java $
* $Revision: 645850 $
* $Date: 2008-04-08 04:08:52 -0700 (Tue, 08 Apr 2008) $
*
* ====================================================================
* 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.conn.scheme;
import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.params.HttpParams;
/**
* A factory for creating and connecting sockets.
* The factory encapsulates the logic for establishing a socket connection.
* <br/>
* Both {@link java.lang.Object#equals(java.lang.Object) Object.equals()}
* and {@link java.lang.Object#hashCode() Object.hashCode()}
* must be overridden for the correct operation of some connection managers.
*
* @author <a href="mailto:rolandw at apache.org">Roland Weber</a>
* @author Michael Becke
* @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
*/
public interface SocketFactory {
/**
* Creates a new, unconnected socket.
* The socket should subsequently be passed to
* {@link #connectSocket connectSocket}.
*
* @return a new socket
*
* @throws IOException if an I/O error occurs while creating the socket
*/
Socket createSocket()
throws IOException
;
/**
* Connects a socket to the given host.
*
* @param sock the socket to connect, as obtained from
* {@link #createSocket createSocket}.
* <code>null</code> indicates that a new socket
* should be created and connected.
* @param host the host to connect to
* @param port the port to connect to on the host
* @param localAddress the local address to bind the socket to, or
* <code>null</code> for any
* @param localPort the port on the local machine,
* 0 or a negative number for any
* @param params additional {@link HttpParams parameters} for connecting
*
* @return the connected socket. The returned object may be different
* from the <code>sock</code> argument if this factory supports
* a layered protocol.
*
* @throws IOException if an I/O error occurs
* @throws UnknownHostException if the IP address of the target host
* can not be determined
* @throws ConnectTimeoutException if the socket cannot be connected
* within the time limit defined in the <code>params</code>
*/
Socket connectSocket(
Socket sock,
String host,
int port,
InetAddress localAddress,
int localPort,
HttpParams params
) throws IOException, UnknownHostException, ConnectTimeoutException;
/**
* Checks whether a socket provides a secure connection.
* The socket must be {@link #connectSocket connected}
* by this factory.
* The factory will <i>not</i> perform I/O operations
* in this method.
* <br/>
* As a rule of thumb, plain sockets are not secure and
* TLS/SSL sockets are secure. However, there may be
* application specific deviations. For example, a plain
* socket to a host in the same intranet ("trusted zone")
* could be considered secure. On the other hand, a
* TLS/SSL socket could be considered insecure based on
* the cypher suite chosen for the connection.
*
* @param sock the connected socket to check
*
* @return <code>true</code> if the connection of the socket
* should be considered secure, or
* <code>false</code> if it should not
*
* @throws IllegalArgumentException
* if the argument is invalid, for example because it is
* not a connected socket or was created by a different
* socket factory.
* Note that socket factories are <i>not</i> required to
* check these conditions, they may simply return a default
* value when called with an invalid socket argument.
*/
boolean isSecure(Socket sock)
throws IllegalArgumentException
;
}
|
