datagram_service.c
3.14 KB
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
/**
* \file
*
* \author Georg Hopp
*
* \copyright
* Copyright © 2014 Georg Hopp
*
* 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 3 of the License, or
* (at your option) any later version.
*
* 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. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdarg.h>
#include <stdint.h>
#include <sys/types.h>
#include "trbase.h"
#include "trio.h"
#include "trdata.h"
#include "tr/datagram_service.h"
#include "tr/interface/protocol.h"
#include "tr/interface/comm_end_point.h"
static
int
datagramServiceCtor(void * _this, va_list * params)
{
TR_PARENTCALL(TR_DatagramService, _this, TR_Class, ctor, params);
return 0;
}
static
void
datagramServiceDtor(void * _this)
{
TR_PARENTCALL(TR_DatagramService, _this, TR_Class, dtor);
}
static
TR_ProtoMessage
datagramServiceNextMessage(void * _this)
{
TR_CommEndPoint comm = _this;
TR_RemoteData data = TR_queueGet(comm->read_buffer);
TR_ProtoMessage ret_message = NULL;
size_t end;
if (NULL == data) return ret_message;
ret_message = TR_protoCreateMessage(comm->protocol, data->remote);
end = TR_protoParse(comm->protocol, ret_message, data);
if (end != ((TR_SizedData)data)->size) {
/**
* TODO
* This means that the parser has not consumed all of the data.
* We do not know the reason, but with HTTP this should only occur
* when the message is complete... anyway, to prevent us from
* looping forever because a protocol implementation is buggy
* we should close the connection after end was 0 the second time.
* This can be done by firing a close event.
*/
switch(end) {
default:
{
TR_RemoteData new_data = TR_new(
TR_RemoteData,
((TR_SizedData)data)->data + end,
((TR_SizedData)data)->size - end,
data->remote);
TR_delete(data);
data = new_data;
}
// intended drop through
case 0:
TR_queuePutFirst(comm->read_buffer, data);
}
}
if (! ret_message->ready) {
TR_delete(ret_message);
}
return ret_message;
}
static
int
datagramServiceCompose(void * _this, TR_ProtoMessage message)
{
TR_RemoteData data =
TR_protoCompose(((TR_CommEndPoint)_this)->protocol, message);
if (! data) {
return FALSE;
}
TR_queuePut(((TR_CommEndPoint)_this)->write_buffer, data);
return TRUE;
}
intptr_t datagramService_events[TR_CEP_EVENT_MAX + 1];
TR_INIT_IFACE(TR_Class, datagramServiceCtor, datagramServiceDtor, NULL);
TR_INIT_IFACE(
TR_CommEndPoint,
datagramServiceNextMessage,
datagramServiceCompose);
TR_CREATE_CLASS(
TR_DatagramService,
TR_CommEndPoint,
NULL,
TR_IF(TR_Class),
TR_IF(TR_CommEndPoint)) = {
{{
NULL,
TR_CEP_EVENT_MAX + 1,
datagramService_events
}}
};
// vim: set ts=4 sw=4: