3 * Copyright 2007,2008,2009 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 #if defined(HAVE_NETDB_H)
29 #include <sys/socket.h> // usually #included by <netdb.h>?
30 #elif defined(HAVE_WINDOWS_H)
35 #include <gruel/thread.h>
38 typedef boost::shared_ptr<gr_udp_sink> gr_udp_sink_sptr;
41 gr_make_udp_sink (size_t itemsize,
42 const char *src, unsigned short port_src,
43 const char *dst, unsigned short port_dst,
44 int payload_size=1472);
47 * \brief Write stream to an UDP socket.
50 * \param itemsize The size (in bytes) of the item datatype
51 * \param src The source address as either the host name or the 'numbers-and-dots'
53 * \param port_src Destination port to bind to (0 allows socket to choose an appropriate port)
54 * \param dst The destination address as either the host name or the 'numbers-and-dots'
56 * \param port_dst Destination port to connect to
57 * \param payload_size UDP payload size by default set to
58 * 1472 = (1500 MTU - (8 byte UDP header) - (20 byte IP header))
61 class gr_udp_sink : public gr_sync_block
63 friend gr_udp_sink_sptr gr_make_udp_sink (size_t itemsize,
64 const char *src, unsigned short port_src,
65 const char *dst, unsigned short port_dst,
72 int d_payload_size; // maximum transmission unit (packet length)
73 int d_socket; // handle to socket
74 struct addrinfo *d_ip_src; // store the source ip info
75 struct addrinfo *d_ip_dst; // store the destination ip info
79 * \brief UDP Sink Constructor
81 * \param itemsize The size (in bytes) of the item datatype
82 * \param src The source address as either the host name or the 'numbers-and-dots'
84 * \param port_src Destination port to bind to (0 allows socket to choose an appropriate port)
85 * \param dst The destination address as either the host name or the 'numbers-and-dots'
87 * \param port_dst Destination port to connect to
88 * \param payload_size UDP payload size by default set to
89 * 1472 = (1500 MTU - (8 byte UDP header) - (20 byte IP header))
91 gr_udp_sink (size_t itemsize,
92 const char *src, unsigned short port_src,
93 const char *dst, unsigned short port_dst,
100 * \brief open a socket specified by the port and ip address info
102 * Opens a socket, binds to the address, and makes connectionless association
103 * over UDP. If any of these fail, the fuction retuns the error and exits.
108 * \brief Close current socket.
110 * Shuts down read/write on the socket
114 /*! \brief return the PAYLOAD_SIZE of the socket */
115 int payload_size() { return d_payload_size; }
117 // should we export anything else?
119 int work (int noutput_items,
120 gr_vector_const_void_star &input_items,
121 gr_vector_void_star &output_items);
124 #endif /* INCLUDED_GR_UDP_SINK_H */