5 * Created by Victor Grishchenko, Arno Bakker on 3/9/09.
6 * Copyright 2009 Delft University of Technology. All rights reserved.
13 typedef int socklen_t;
15 #include <arpa/inet.h>
24 tint Datagram::now = Datagram::Time();
25 tint Datagram::start = now;
26 tint Datagram::epoch = now/360000000LL*360000000LL; // make logs mergeable
27 uint32_t Address::LOCALHOST = INADDR_LOOPBACK;
28 uint64_t Datagram::dgrams_up=0, Datagram::dgrams_down=0,
29 Datagram::bytes_up=0, Datagram::bytes_down=0;
31 const char* tintstr (tint time) {
34 static char ret_str[4][32]; // wow
39 time -= Datagram::epoch;
41 int hours = time/TINT_HOUR;
43 int mins = time/TINT_MIN;
45 int secs = time/TINT_SEC;
47 int msecs = time/TINT_MSEC;
49 int usecs = time/TINT_uSEC;
50 sprintf(ret_str[i],"%i_%02i_%02i_%03i_%03i",hours,mins,secs,msecs,usecs);
54 void Address::set_ipv4 (const char* ip_str) {
55 struct hostent *h = gethostbyname(ip_str);
57 print_error("cannot lookup address");
60 addr.sin_addr.s_addr = *(u_long *) h->h_addr_list[0];
65 Address::Address(const char* ip_port) {
67 if (strlen(ip_port)>=1024)
70 strncpy(ipp,ip_port,1024);
71 char* semi = strchr(ipp,':');
77 if (strchr(ipp, '.')) {
79 set_port((uint16_t)0);
81 set_ipv4(INADDR_LOOPBACK);
88 int Datagram::Send () {
89 int r = sendto(sock,(const char *)buf+offset,length-offset,0,
90 (struct sockaddr*)&(addr.addr),sizeof(struct sockaddr_in));
101 int Datagram::Recv () {
102 socklen_t addrlen = sizeof(struct sockaddr_in);
104 length = recvfrom (sock, (char *)buf, MAXDGRAMSZ*2, 0,
105 (struct sockaddr*)&(addr.addr), &addrlen);
108 print_error("error on recv");
117 void Datagram::Wait (int sockcnt, socket_callbacks_t* sockets, tint usec) {
118 struct timeval timeout;
119 timeout.tv_sec = usec/TINT_SEC;
120 timeout.tv_usec = usec%TINT_SEC;
122 fd_set rdfd, wrfd, errfd;
126 for(int i=0; i<sockcnt; i++) {
127 if (sockets[i].may_read!=0)
128 FD_SET(sockets[i].sock,&rdfd);
129 if (sockets[i].may_write!=0)
130 FD_SET(sockets[i].sock,&wrfd);
131 if (sockets[i].on_error!=0)
132 FD_SET(sockets[i].sock,&errfd);
133 if (sockets[i].sock>max_sock_fd)
134 max_sock_fd = sockets[i].sock;
136 int sel = select(max_sock_fd+1, &rdfd, &wrfd, &errfd, &timeout);
139 for (int i=0; i<=sockcnt; i++) {
140 socket_callbacks_t& sct = sockets[i];
141 if (sct.may_read && FD_ISSET(sct.sock,&rdfd))
142 (*(sct.may_read))(sct.sock);
143 if (sct.may_write && FD_ISSET(sockets[i].sock,&wrfd))
144 (*(sct.may_write))(sct.sock);
145 if (sct.on_error && FD_ISSET(sockets[i].sock,&errfd))
146 (*(sct.on_error))(sct.sock);
149 print_error("select fails");
153 tint Datagram::Time () {
154 //HiResTimeOfDay* tod = HiResTimeOfDay::Instance();
155 //tint ret = tod->getTimeUSec();
156 //DLOG(INFO)<<"now is "<<ret;
157 return now = usec_time();
160 SOCKET Datagram::Bind (Address addr_) {
161 struct sockaddr_in addr = addr_;
163 int len = sizeof(struct sockaddr_in), sndbuf=1<<20, rcvbuf=1<<20;
164 #define dbnd_ensure(x) { if (!(x)) { print_error("binding fails"); close_socket(fd); return INVALID_SOCKET; } }
165 dbnd_ensure ( (fd = socket(AF_INET, SOCK_DGRAM, 0)) >= 0 );
166 dbnd_ensure( make_socket_nonblocking(fd) ); // FIXME may remove this
168 dbnd_ensure ( setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (setsockoptptr_t)&sndbuf, sizeof(int)) == 0 );
169 dbnd_ensure ( setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (setsockoptptr_t)&rcvbuf, sizeof(int)) == 0 );
170 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (setsockoptptr_t)&enable, sizeof(int));
171 dbnd_ensure ( ::bind(fd, (sockaddr*)&addr, len) == 0 );
175 void Datagram::Close (SOCKET sock) {
176 if (!close_socket(sock))
177 print_error("on closing a socket");
181 std::string sock2str (struct sockaddr_in addr) {
184 //Vista only: InetNtop(AF_INET,&(addr.sin_addr),ipch,32);
186 struct in_addr inaddr;
187 memcpy(&inaddr, &(addr.sin_addr), sizeof(inaddr));
188 strncpy(ipch, inet_ntoa(inaddr),32);
190 inet_ntop(AF_INET,&(addr.sin_addr),ipch,32);
192 sprintf(ipch+strlen(ipch),":%i",ntohs(addr.sin_port));
193 return std::string(ipch);
197 std::string Datagram::to_string () const { // TODO: pretty-print swift
198 std::string addrs = sock2str(addr);
199 char hex[MAXDGRAMSZ*2];
200 for(int i=offset; i<length; i++)
201 sprintf(hex+i*2,"%02x",buf[i]);
202 std::string hexs(hex+offset*2,(length-offset)*2);
203 return addrs + '\t' + hexs;