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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
// $Id$
#include "RMCast_UDP_Proxy.h"
#include "RMCast_Module.h"
#include "RMCast_IO_UDP.h"
#include "ace/Message_Block.h"
#if !defined (__ACE_INLINE__)
# include "RMCast_UDP_Proxy.i"
#endif /* ! __ACE_INLINE__ */
ACE_RCSID(ace, RMCast_UDP_Proxy, "$Id$")
ACE_RMCast_UDP_Proxy::ACE_RMCast_UDP_Proxy (ACE_RMCast_IO_UDP *io_udp,
const ACE_INET_Addr &addr)
: io_udp_ (io_udp)
, peer_addr_ (addr)
{
}
ACE_RMCast_UDP_Proxy::~ACE_RMCast_UDP_Proxy (void)
{
}
int
ACE_RMCast_UDP_Proxy::receive_message (char *buffer, size_t size)
{
int type = buffer[0];
// @@ What should we do with invalid messages like this?
//
if (type < 0 || type >= ACE_RMCast::MT_LAST)
return 0;
if (type == ACE_RMCast::MT_POLL)
{
ACE_RMCast::Poll poll;
poll.source = this;
return this->poll (poll);
}
else if (type == ACE_RMCast::MT_ACK_JOIN)
{
ACE_RMCast::Ack_Join ack_join;
ack_join.source = this;
const size_t header_size = 1 + sizeof(ACE_UINT32);
if (size < header_size)
{
// The message is too small
return 0;
}
ACE_UINT32 tmp;
ACE_OS::memcpy (&tmp, buffer + 1,
sizeof(tmp));
ack_join.next_sequence_number = ACE_NTOHL (tmp);
return this->ack_join (ack_join);
}
else if (type == ACE_RMCast::MT_ACK_LEAVE)
{
ACE_RMCast::Ack_Leave ack_leave;
ack_leave.source = this;
return this->ack_leave (ack_leave);
}
else if (type == ACE_RMCast::MT_DATA)
{
ACE_RMCast::Data data;
data.source = this;
const size_t header_size = 1 + 3 * sizeof(ACE_UINT32);
if (size < header_size)
{
// The message is too small
return 0;
}
ACE_UINT32 tmp;
ACE_OS::memcpy (&tmp, buffer + 1,
sizeof(tmp));
data.sequence_number = ACE_NTOHL (tmp);
ACE_OS::memcpy (&tmp, buffer + 1 + sizeof(tmp),
sizeof(tmp));
data.total_size = ACE_NTOHL (tmp);
ACE_OS::memcpy (&tmp, buffer + 1 + 2 * sizeof(tmp),
sizeof(tmp));
data.fragment_offset = ACE_NTOHL (tmp);
// Pass it up the module...
ACE_Message_Block *mb;
ACE_NEW_RETURN (mb, ACE_Message_Block, -1);
mb->size (size - header_size);
mb->copy (buffer + header_size, size - header_size);
data.payload = mb;
return this->data (data);
}
else if (type == ACE_RMCast::MT_JOIN)
{
ACE_RMCast::Join join;
join.source = this;
return this->join (join);
}
else if (type == ACE_RMCast::MT_LEAVE)
{
ACE_RMCast::Leave leave;
leave.source = this;
return this->leave (leave);
}
else if (type == ACE_RMCast::MT_ACK)
{
ACE_RMCast::Ack ack;
ack.source = this;
const size_t header_size = 1 + sizeof(ACE_UINT32);
if (size < header_size)
{
// The message is too small
return 0;
}
ACE_UINT32 tmp;
ACE_OS::memcpy (&tmp, buffer + 1,
sizeof(tmp));
ack.next_expected = ACE_NTOHL (tmp);
ACE_OS::memcpy (&tmp, buffer + 1 + sizeof(ACE_UINT32),
sizeof(tmp));
ack.highest_received = ACE_NTOHL (tmp);
return this->ack (ack);
}
return 0;
}
int
ACE_RMCast_UDP_Proxy::reply_data (ACE_RMCast::Data &data)
{
return this->io_udp_->send_data (data, this->peer_addr_);
}
int
ACE_RMCast_UDP_Proxy::reply_poll (ACE_RMCast::Poll &poll)
{
return this->io_udp_->send_poll (poll, this->peer_addr_);
}
int
ACE_RMCast_UDP_Proxy::reply_ack_join (ACE_RMCast::Ack_Join &ack_join)
{
(void) this->ACE_RMCast_Proxy::reply_ack_join (ack_join);
return this->io_udp_->send_ack_join (ack_join, this->peer_addr_);
}
int
ACE_RMCast_UDP_Proxy::reply_ack_leave (ACE_RMCast::Ack_Leave &ack_leave)
{
return this->io_udp_->send_ack_leave (ack_leave, this->peer_addr_);
}
int
ACE_RMCast_UDP_Proxy::reply_ack (ACE_RMCast::Ack &ack)
{
return this->io_udp_->send_ack (ack, this->peer_addr_);
}
int
ACE_RMCast_UDP_Proxy::reply_join (ACE_RMCast::Join &join)
{
return this->io_udp_->send_join (join, this->peer_addr_);
}
int
ACE_RMCast_UDP_Proxy::reply_leave (ACE_RMCast::Leave &leave)
{
return this->io_udp_->send_leave (leave, this->peer_addr_);
}
|
