3 * Copyright 2007 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 3, 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 gr_make_udp_sink (size_t itemsize,
36 const char *src, unsigned short port_src,
37 const char *dst, unsigned short port_dst,
38 int payload_size=1472);
41 * \brief Write stream to an UDP socket.
44 * \param itemsize The size (in bytes) of the item datatype
45 * \param src The source address as either the host name or the 'numbers-and-dots'
47 * \param port_src Destination port to bind to (0 allows socket to choose an appropriate port)
48 * \param dst The destination address as either the host name or the 'numbers-and-dots'
50 * \param port_dst Destination port to connect to
51 * \param payload_size UDP payload size by default set to
52 * 1472 = (1500 MTU - (8 byte UDP header) - (20 byte IP header))
55 class gr_udp_sink : public gr_sync_block
57 friend gr_udp_sink_sptr gr_make_udp_sink (size_t itemsize,
58 const char *src, unsigned short port_src,
59 const char *dst, unsigned short port_dst,
66 int d_payload_size; // maximum transmission unit (packet length)
67 int d_socket; // handle to socket
68 int d_socket_rcv; // handle to socket retuned in the accept call
69 struct in_addr d_ip_src; // store the source ip info
70 struct in_addr d_ip_dst; // store the destination ip info
71 unsigned short d_port_src; // the port number to open for connections to this service
72 unsigned short d_port_dst; // port number of the remove system
73 sockaddr_in d_sockaddr_src; // store the source sockaddr data (formatted IP address and port number)
74 sockaddr_in d_sockaddr_dst; // store the destination sockaddr data (formatted IP address and port number)
78 * \brief UDP Sink Constructor
80 * \param itemsize The size (in bytes) of the item datatype
81 * \param src The source address as either the host name or the 'numbers-and-dots'
83 * \param port_src Destination port to bind to (0 allows socket to choose an appropriate port)
84 * \param dst The destination address as either the host name or the 'numbers-and-dots'
86 * \param port_dst Destination port to connect to
87 * \param payload_size UDP payload size by default set to
88 * 1472 = (1500 MTU - (8 byte UDP header) - (20 byte IP header))
90 gr_udp_sink (size_t itemsize,
91 const char *src, unsigned short port_src,
92 const char *dst, unsigned short port_dst,
99 * \brief open a socket specified by the port and ip address info
101 * Opens a socket, binds to the address, and makes connectionless association
102 * over UDP. If any of these fail, the fuction retuns the error and exits.
107 * \brief Close current socket.
109 * Shuts down read/write on the socket
113 /*! \brief return the PAYLOAD_SIZE of the socket */
114 int payload_size() { return d_payload_size; }
116 // should we export anything else?
118 int work (int noutput_items,
119 gr_vector_const_void_star &input_items,
120 gr_vector_void_star &output_items);
123 #endif /* INCLUDED_GR_UDP_SINK_H */