1 /*
2 * Copyright 2011 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package io.netty.channel.sctp;
17
18 import com.sun.nio.sctp.Association;
19 import io.netty.channel.Channel;
20 import io.netty.channel.ChannelFuture;
21 import io.netty.channel.ChannelPromise;
22
23 import java.net.InetAddress;
24 import java.net.InetSocketAddress;
25 import java.util.Set;
26
27 /**
28 * A SCTP/IP {@link Channel} interface for single SCTP association.
29 *
30 * <p>
31 * The SctpChannel is a message-oriented, connected transport which supports multi-streaming and multi-homing.
32 * </p>
33 */
34 public interface SctpChannel extends Channel {
35 @Override
36 SctpServerChannel parent();
37
38 /**
39 * Returns the underlying SCTP association.
40 */
41 Association association();
42
43 /**
44 * Return the (primary) local address of the SCTP channel.
45 *
46 * Please note that, this return the first local address in the underlying SCTP Channel's
47 * local address iterator to support Netty Channel API. In other words, its the application's
48 * responsibility to keep track of it's local primary address.
49 *
50 * (To set a local address as primary, the application can request by calling local SCTP stack,
51 * with SctpStandardSocketOption.SCTP_PRIMARY_ADDR option).
52 */
53 @Override
54 InetSocketAddress localAddress();
55
56 /**
57 * Return all local addresses of the SCTP channel.
58 * Please note that, it will return more than one address if this channel is using multi-homing
59 */
60 Set<InetSocketAddress> allLocalAddresses();
61
62 /**
63 * Returns the {@link SctpChannelConfig} configuration of the channel.
64 */
65 @Override
66 SctpChannelConfig config();
67
68 /**
69 * Return the (primary) remote address of the SCTP channel.
70 *
71 * Please note that, this return the first remote address in the underlying SCTP Channel's
72 * remote address iterator to support Netty Channel API. In other words, its the application's
73 * responsibility to keep track of it's peer's primary address.
74 *
75 * (The application can request it's remote peer to set a specific address as primary by
76 * calling the local SCTP stack with SctpStandardSocketOption.SCTP_SET_PEER_PRIMARY_ADDR option)
77 */
78 @Override
79 InetSocketAddress remoteAddress();
80
81 /**
82 * Return all remote addresses of the SCTP server channel.
83 * Please note that, it will return more than one address if the remote is using multi-homing.
84 */
85 Set<InetSocketAddress> allRemoteAddresses();
86
87 /**
88 * Bind a address to the already bound channel to enable multi-homing.
89 * The Channel bust be bound and yet to be connected.
90 */
91 ChannelFuture bindAddress(InetAddress localAddress);
92
93 /**
94 * Bind a address to the already bound channel to enable multi-homing.
95 * The Channel bust be bound and yet to be connected.
96 *
97 * Will notify the given {@link ChannelPromise} and return a {@link ChannelFuture}
98 */
99 ChannelFuture bindAddress(InetAddress localAddress, ChannelPromise promise);
100
101 /**
102 * Unbind the address from channel's multi-homing address list.
103 * The address should be added already in multi-homing address list.
104 */
105 ChannelFuture unbindAddress(InetAddress localAddress);
106
107 /**
108 * Unbind the address from channel's multi-homing address list.
109 * The address should be added already in multi-homing address list.
110 *
111 * Will notify the given {@link ChannelPromise} and return a {@link ChannelFuture}
112 */
113 ChannelFuture unbindAddress(InetAddress localAddress, ChannelPromise promise);
114 }
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