3 Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
28 // Debug printing options
29 // Set to 1 for debug output
31 // This is prepended to everything printed here
34 bool g_sockets_initialized = false;
40 if(WSAStartup( MAKEWORD(2,2), &WsaData ) != NO_ERROR)
41 throw SocketException("WSAStartup failed");
44 g_sockets_initialized = true;
47 void sockets_cleanup()
60 Address::Address(unsigned int address, unsigned short port)
66 Address::Address(unsigned int a, unsigned int b,
67 unsigned int c, unsigned int d,
70 m_address = (a<<24) | (b<<16) | ( c<<8) | d;
74 bool Address::operator==(Address &address)
76 return (m_address == address.m_address
77 && m_port == address.m_port);
80 bool Address::operator!=(Address &address)
82 return !(*this == address);
85 void Address::Resolve(const char *name)
87 struct addrinfo *resolved;
88 int e = getaddrinfo(name, NULL, NULL, &resolved);
90 throw ResolveError("");
92 FIXME: This is an ugly hack; change the whole class
93 to store the address as sockaddr
95 struct sockaddr_in *t = (struct sockaddr_in*)resolved->ai_addr;
96 m_address = ntohl(t->sin_addr.s_addr);
97 freeaddrinfo(resolved);
100 std::string Address::serializeString() const
102 unsigned int a, b, c, d;
103 a = (m_address & 0xFF000000)>>24;
104 b = (m_address & 0x00FF0000)>>16;
105 c = (m_address & 0x0000FF00)>>8;
106 d = (m_address & 0x000000FF);
107 return itos(a)+"."+itos(b)+"."+itos(c)+"."+itos(d);
110 unsigned int Address::getAddress() const
115 unsigned short Address::getPort() const
120 void Address::setAddress(unsigned int address)
125 void Address::setAddress(unsigned int a, unsigned int b,
126 unsigned int c, unsigned int d)
128 m_address = (a<<24) | (b<<16) | ( c<<8) | d;
131 void Address::setPort(unsigned short port)
136 void Address::print(std::ostream *s) const
138 (*s)<<((m_address>>24)&0xff)<<"."
139 <<((m_address>>16)&0xff)<<"."
140 <<((m_address>>8)&0xff)<<"."
141 <<((m_address>>0)&0xff)<<":"
145 void Address::print() const
150 UDPSocket::UDPSocket()
152 if(g_sockets_initialized == false)
153 throw SocketException("Sockets not initialized");
155 m_handle = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
158 dstream<<DPS<<"UDPSocket("<<(int)m_handle<<")::UDPSocket()"<<std::endl;
162 throw SocketException("Failed to create socket");
166 DWORD nonblocking = 0;
167 if(ioctlsocket(m_handle, FIONBIO, &nonblocking) != 0)
169 throw SocketException("Failed set non-blocking mode");
173 if(fcntl(m_handle, F_SETFL, O_NONBLOCK, nonblocking) == -1)
175 throw SocketException("Failed set non-blocking mode");
182 UDPSocket::~UDPSocket()
185 dstream<<DPS<<"UDPSocket("<<(int)m_handle<<")::~UDPSocket()"<<std::endl;
188 closesocket(m_handle);
194 void UDPSocket::Bind(unsigned short port)
197 dstream<<DPS<<"UDPSocket("<<(int)m_handle
198 <<")::Bind(): port="<<port<<std::endl;
201 address.sin_family = AF_INET;
202 address.sin_addr.s_addr = INADDR_ANY;
203 address.sin_port = htons(port);
205 if(bind(m_handle, (const sockaddr*)&address, sizeof(sockaddr_in)) < 0)
207 #ifndef DISABLE_ERRNO
208 dstream<<(int)m_handle<<": Bind failed: "<<strerror(errno)<<std::endl;
210 throw SocketException("Failed to bind socket");
214 void UDPSocket::Send(const Address & destination, const void * data, int size)
216 bool dumping_packet = false;
217 if(INTERNET_SIMULATOR)
218 dumping_packet = (myrand()%10==0); //easy
219 //dumping_packet = (myrand()%4==0); // hard
222 /*dstream<<DPS<<"UDPSocket("<<(int)m_handle
223 <<")::Send(): destination=";*/
225 dstream<<(int)m_handle<<" -> ";
227 dstream<<", size="<<size<<", data=";
228 for(int i=0; i<size && i<20; i++){
229 if(i%2==0) DEBUGPRINT(" ");
230 unsigned int a = ((const unsigned char*)data)[i];
231 DEBUGPRINT("%.2X", a);
236 dstream<<" (DUMPED BY INTERNET_SIMULATOR)";
239 else if(dumping_packet)
241 // Lol let's forget it
242 dstream<<"UDPSocket::Send(): "
243 "INTERNET_SIMULATOR: dumping packet."
251 address.sin_family = AF_INET;
252 address.sin_addr.s_addr = htonl(destination.getAddress());
253 address.sin_port = htons(destination.getPort());
255 int sent = sendto(m_handle, (const char*)data, size,
256 0, (sockaddr*)&address, sizeof(sockaddr_in));
260 throw SendFailedException("Failed to send packet");
264 int UDPSocket::Receive(Address & sender, void * data, int size)
266 if(WaitData(m_timeout_ms) == false)
272 socklen_t address_len = sizeof(address);
274 int received = recvfrom(m_handle, (char*)data,
275 size, 0, (sockaddr*)&address, &address_len);
280 unsigned int address_ip = ntohl(address.sin_addr.s_addr);
281 unsigned int address_port = ntohs(address.sin_port);
283 sender = Address(address_ip, address_port);
286 //dstream<<DPS<<"UDPSocket("<<(int)m_handle<<")::Receive(): sender=";
287 dstream<<DPS<<(int)m_handle<<" <- ";
289 //dstream<<", received="<<received<<std::endl;
290 dstream<<", size="<<received<<", data=";
291 for(int i=0; i<received && i<20; i++){
292 if(i%2==0) DEBUGPRINT(" ");
293 unsigned int a = ((const unsigned char*)data)[i];
294 DEBUGPRINT("%.2X", a);
304 int UDPSocket::GetHandle()
309 void UDPSocket::setTimeoutMs(int timeout_ms)
311 m_timeout_ms = timeout_ms;
314 bool UDPSocket::WaitData(int timeout_ms)
319 // Initialize the set
321 FD_SET(m_handle, &readset);
323 // Initialize time out struct
326 tv.tv_usec = timeout_ms * 1000;
328 result = select(m_handle+1, &readset, NULL, NULL, &tv);
332 /*dstream<<"Select timed out (timeout_ms="
333 <<timeout_ms<<")"<<std::endl;*/
336 else if(result < 0 && errno == EINTR){
341 #ifndef DISABLE_ERRNO
342 dstream<<(int)m_handle<<": Select failed: "<<strerror(errno)<<std::endl;
345 int e = WSAGetLastError();
346 dstream<<(int)m_handle<<": WSAGetLastError()="<<e<<std::endl;
347 if(e == 10004 /*=WSAEINTR*/)
349 dstream<<"WARNING: Ignoring WSAEINTR."<<std::endl;
353 throw SocketException("Select failed");
355 else if(FD_ISSET(m_handle, &readset) == false){
357 //dstream<<"Select reported no data in m_handle"<<std::endl;
362 //dstream<<"Select reported data in m_handle"<<std::endl;