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/* -*- c++ -*- */
/*
* Copyright 2020 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifndef INCLUDED_NETWORK_UDP_SOURCE_H
#define INCLUDED_NETWORK_UDP_SOURCE_H
#include <gnuradio/network/api.h>
#include <gnuradio/sync_block.h>
namespace gr {
namespace network {
/*!
* \brief This block provides a UDP source block that starts a
* listener on the specified port and waits for inbound UDP packets.
* \ingroup networking_tools
*
* \details
* This block provides a UDP source that supports receiving data over
* a UDP stream from external applications. A number of header formats
* are supported including None (raw stream), and other header formats
* that allow for sequence numbers to be tracked. This feature allows
* the flowgraph to be aware of any frames dropped in transit or by
* its receiving stack. However, this needs to be appropriately
* paired with the sending application (it needs to send the same
* header). The UDP packet size can also be adjusted
* to support jumbo frames. For most networks, 1472 is the correct
* UDP data packet size that optimizes network transmission. Adjusting
* this value without a full understanding of the network implications
* can create additional network fragmentation and inefficient packet
* usage so should be avoided. For networks and endpoints supporting
* jumbo frames of 9000, 8972 would be the appropriate size
* (9000 - 28 header bytes). This block does support IPv4 only or
* dual stack IPv4/IPv6 listening as an endpoint with an enable
* IPv6 option that can be set on the block properties page. It can
* also be set to source zeros (no signal) in the event no data
* is being received.
*/
class NETWORK_API udp_source : virtual public gr::sync_block
{
public:
typedef boost::shared_ptr<udp_source> sptr;
/*!
* Build a udp_source block.
*/
static sptr make(size_t itemsize,
size_t vecLen,
int port,
int header_type,
int payloadsize,
bool notify_missed,
bool source_zeros,
bool ipv6);
};
} // namespace network
} // namespace gr
#endif /* INCLUDED_NETWORK_UDP_SOURCE_H */
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