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
|
/*****************************************************************
|
| Platinum - Datagram Stream
|
| Copyright (c) 2004-2010, Plutinosoft, LLC.
| All rights reserved.
| http://www.plutinosoft.com
|
| This program is free software; you can redistribute it and/or
| modify it under the terms of the GNU General Public License
| as published by the Free Software Foundation; either version 2
| of the License, or (at your option) any later version.
|
| OEMs, ISVs, VARs and other distributors that combine and
| distribute commercially licensed software with Platinum software
| and do not wish to distribute the source code for the commercially
| licensed software under version 2, or (at your option) any later
| version, of the GNU General Public License (the "GPL") must enter
| into a commercial license agreement with Plutinosoft, LLC.
| licensing@plutinosoft.com
|
| This program is distributed in the hope that it will be useful,
| but WITHOUT ANY WARRANTY; without even the implied warranty of
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
| GNU General Public License for more details.
|
| You should have received a copy of the GNU General Public License
| along with this program; see the file LICENSE.txt. If not, write to
| the Free Software Foundation, Inc.,
| 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
| http://www.gnu.org/licenses/gpl-2.0.html
|
****************************************************************/
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "PltDatagramStream.h"
#include "NptLogging.h"
NPT_SET_LOCAL_LOGGER("platinum.inputdatagramstream")
/*----------------------------------------------------------------------
| PLT_InputDatagramStream::PLT_InputDatagramStream
+---------------------------------------------------------------------*/
PLT_InputDatagramStream::PLT_InputDatagramStream(NPT_UdpSocket* socket,
NPT_Size buffer_size) :
m_Socket(socket),
m_BufferOffset(0)
{
m_Buffer.SetBufferSize(buffer_size);
}
/*----------------------------------------------------------------------
| PLT_InputDatagramStream::~PLT_InputDatagramStream
+---------------------------------------------------------------------*/
PLT_InputDatagramStream::~PLT_InputDatagramStream()
{
}
/*----------------------------------------------------------------------
| PLT_InputDatagramStream::Read
+---------------------------------------------------------------------*/
NPT_Result
PLT_InputDatagramStream::Read(void* buffer,
NPT_Size bytes_to_read,
NPT_Size* bytes_read /*= 0*/)
{
NPT_Result res = NPT_SUCCESS;
if (bytes_read) *bytes_read = 0;
// always try to read from socket if needed even if bytes_to_read is 0
if (m_Buffer.GetDataSize() == 0) {
// read data into it now
NPT_SocketAddress addr;
res = m_Socket->Receive(m_Buffer, &addr);
// update info
m_Socket->GetInfo(m_Info);
m_Info.remote_address = addr;
NPT_LOG_FINE_1("PLT_InputDatagramStream received %d", m_Buffer.GetDataSize());
}
if (bytes_to_read == 0) return res;
if (NPT_SUCCEEDED(res)) {
NPT_Size available = m_Buffer.GetDataSize()-(NPT_Size)m_BufferOffset;
NPT_Size _bytes_to_read = bytes_to_read<available?bytes_to_read:available;
NPT_CopyMemory(buffer, m_Buffer.UseData()+m_BufferOffset, _bytes_to_read);
m_BufferOffset += _bytes_to_read;
if (bytes_read) *bytes_read = _bytes_to_read;
// read buffer entirety, reset for next time
if (m_BufferOffset == m_Buffer.GetDataSize()) {
m_BufferOffset = 0;
m_Buffer.SetDataSize(0);
}
NPT_LOG_FINE_3("PLT_InputDatagramStream requested %d, consumed %d, left %d", bytes_to_read, _bytes_to_read, m_Buffer.GetDataSize());
}
return res;
}
/*----------------------------------------------------------------------
| PLT_OutputDatagramStream::GetInfo
+---------------------------------------------------------------------*/
NPT_Result
PLT_InputDatagramStream::GetInfo(NPT_SocketInfo& info)
{
info = m_Info;
return NPT_SUCCESS;
}
/*----------------------------------------------------------------------
| PLT_OutputDatagramStream::PLT_OutputDatagramStream
+---------------------------------------------------------------------*/
PLT_OutputDatagramStream::PLT_OutputDatagramStream(NPT_UdpSocket* socket,
NPT_Size size,
const NPT_SocketAddress* address) :
m_Socket(socket),
m_Address(address?new NPT_SocketAddress(address->GetIpAddress(), address->GetPort()):NULL)
{
m_Buffer.SetBufferSize(size);
}
/*----------------------------------------------------------------------
| PLT_OutputDatagramStream::~PLT_OutputDatagramStream
+---------------------------------------------------------------------*/
PLT_OutputDatagramStream::~PLT_OutputDatagramStream()
{
delete m_Address;
}
/*----------------------------------------------------------------------
| PLT_OutputDatagramStream::Write
+---------------------------------------------------------------------*/
NPT_Result
PLT_OutputDatagramStream::Write(const void* buffer, NPT_Size bytes_to_write, NPT_Size* bytes_written /* = NULL */)
{
// calculate if we need to increase the buffer
NPT_Int32 overflow = bytes_to_write - m_Buffer.GetBufferSize() + m_Buffer.GetDataSize();
if (overflow > 0) {
m_Buffer.Reserve(m_Buffer.GetBufferSize() + overflow);
}
// copy data in place at the end of what we have there already
NPT_CopyMemory(m_Buffer.UseData() + m_Buffer.GetDataSize(), buffer, bytes_to_write);
m_Buffer.SetDataSize(m_Buffer.GetDataSize() + bytes_to_write);
if (bytes_written) *bytes_written = bytes_to_write;
return NPT_SUCCESS;
}
/*----------------------------------------------------------------------
| PLT_OutputDatagramStream::Flush
+---------------------------------------------------------------------*/
NPT_Result
PLT_OutputDatagramStream::Flush()
{
// send buffer now
m_Socket->Send(m_Buffer, m_Address);
// reset buffer
m_Buffer.SetDataSize(0);
return NPT_SUCCESS;
}
|
