3 * Copyright 2004 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
23 #ifndef INCLUDED_GR_UDP_SINK_H
24 #define INCLUDED_GR_UDP_SINK_H
26 #include <gr_sync_block.h>
27 #include <omnithread.h>
28 #include <sys/socket.h>
29 #include <arpa/inet.h>
32 typedef boost::shared_ptr<gr_udp_sink> gr_udp_sink_sptr;
35 * \brief Write stream to an Udp port (over UDP).
40 gr_make_udp_sink (size_t itemsize,
41 const char *ipaddrl, unsigned short portl,
42 const char *ipaddrr, unsigned short portr,
43 unsigned int mtu=540);
45 class gr_udp_sink : public gr_sync_block
47 friend gr_udp_sink_sptr gr_make_udp_sink (size_t itemsize,
48 const char *ipaddrl, unsigned short portl,
49 const char *ipaddrr, unsigned short portr,
56 unsigned int d_mtu; // maximum transmission unit (packet length)
57 int d_socket; // handle to socket
58 int d_socket_rcv; // handle to socket retuned in the accept call
59 struct in_addr d_ipaddr_local; // store the local IP address to use
60 struct in_addr d_ipaddr_remote; // store the remote IP address that connected to us
61 unsigned short d_port_local; // the port number to open for connections to this service
62 unsigned short d_port_remote; // port number of the remove system
63 sockaddr_in d_sockaddr_local; // store the local sockaddr data (formatted IP address and port number)
64 sockaddr_in d_sockaddr_remote; // store the remote sockaddr data (formatted IP address and port number)
67 gr_udp_sink (size_t itemsize,
68 const char *ipaddrl, unsigned short portl,
69 const char *ipaddrr, unsigned short portr,
76 * \brief open a socket specified by the port and ip address info
78 * Opens a socket, binds to the address, and makes connectionless association
79 * over UDP. If any of these fail, the fuction retuns the error and exits.
84 * \brief Close current socket.
86 * Shuts down read/write on the socket
90 /*! \brief set the MTU of the socket */
91 void set_mtu(unsigned int mtu) { d_mtu = mtu; }
93 /*! \brief return the MTU of the socket */
94 unsigned int mtu() { return d_mtu; }
96 // should we export anything else?
98 int work (int noutput_items,
99 gr_vector_const_void_star &input_items,
100 gr_vector_void_star &output_items);
103 #endif /* INCLUDED_GR_UDP_SINK_H */