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
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* udp_socket.cc
*
* Fri Aug 18 00:12:25 CEST 2006
* Copyright 2006 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of MIaV.
*
* MIaV 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.
*
* MIaV 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 MIaV; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "udp_socket.h"
#include <errno.h>
// For socket
#include <sys/types.h>
#include <sys/socket.h>
// For UDP
#include <sys/socket.h>
#include <netinet/in.h>
// For inet_ntoa
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "info.h"
UDPSocket::UDPSocket(int port, std::string addr) : Socket(port, addr)
{
sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(sock == -1) MIaV::info->error("Could not create UDP socket: %s", strerror(errno));
}
int UDPSocket::write(void *buf, int size)
{
int n;
if(!connected) {
memset((char *) &sa, sizeof(sa), 0);
sa.sin_family = AF_INET;
sa.sin_port = htons(prt);
if (inet_aton(addr.c_str(), &sa.sin_addr)==0) {
MIaV::info->error("An error occurred in inet_aton! %s", strerror(errno));
}
connected = true;
}
n = sendto(sock, buf, size, 0, (const sockaddr*)&sa, (socklen_t)sizeof(sa));
if(n==-1) {
MIaV::info->error("An error occurred! %s", strerror(errno));
}
return n;
}
int UDPSocket::read(void *buf, int size)
{
int n;
if(!connected) {
struct sockaddr_in si_me;
si_me.sin_family = AF_INET;
si_me.sin_port = htons(prt);
si_me.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(sock, (const sockaddr*)&si_me, (socklen_t)sizeof(si_me))==-1) {
strerr = "UDPSocet failed on bind. ";
strerr.append(strerror(errno));
return -1;
}
connected = true;
}
int slen = sizeof(sa);
n = recvfrom(sock, buf, size, 0, (sockaddr*)&sa, (socklen_t*)&slen);
if(n == -1) {
strerr = "UDPSocet failed on read. ";
strerr.append(strerror(errno));
return -1;
}
// Fill in the host data.
setAddress(inet_ntoa(sa.sin_addr));
setPort(sa.sin_port);
return n;
}
|
