#define INCLUDED_GR_UDP_SOURCE_H
#include <gr_sync_block.h>
-#if defined(HAVE_NETDB_H)
-#include <netdb.h>
-#include <sys/socket.h> // usually #included by <netdb.h>?
-#elif defined(HAVE_WINDOWS_H)
-#include <winsock2.h>
-#include <ws2tcpip.h>
-#endif
-
#include <gruel/thread.h>
class gr_udp_source;
typedef boost::shared_ptr<gr_udp_source> gr_udp_source_sptr;
-gr_udp_source_sptr gr_make_udp_source(size_t itemsize, const char *src,
- unsigned short port_src,
- int payload_size=1472, bool wait=true);
+gr_udp_source_sptr gr_make_udp_source(size_t itemsize, const char *host,
+ unsigned short port,
+ int payload_size=1472,
+ bool eof=true, bool wait=true);
/*!
* \brief Read stream from an UDP socket.
* \ingroup source_blk
*
* \param itemsize The size (in bytes) of the item datatype
- * \param src The source address as either the host name or the 'numbers-and-dots'
- * IP address
- * \param port_src The port number on which the socket listens for data
- * \param payload_size UDP payload size by default set to
- * 1472 = (1500 MTU - (8 byte UDP header) - (20 byte IP header))
- * \param wait Wait for data if not immediately available (default: true)
+ * \param host The name or IP address of the receiving host; can be
+ * NULL, None, or "0.0.0.0" to allow reading from any
+ * interface on the host
+ * \param port The port number on which to receive data; use 0 to
+ * have the system assign an unused port number
+ * \param payload_size UDP payload size by default set to 1472 =
+ * (1500 MTU - (8 byte UDP header) - (20 byte IP header))
+ * \param eof Interpret zero-length packet as EOF (default: true)
+ * \param wait Wait for data if not immediately available
+ * (default: true)
*
*/
class gr_udp_source : public gr_sync_block
{
- friend gr_udp_source_sptr gr_make_udp_source(size_t itemsize, const char *src,
- unsigned short port_src,
- int payload_size, bool wait);
+ friend gr_udp_source_sptr gr_make_udp_source(size_t itemsize,
+ const char *host,
+ unsigned short port,
+ int payload_size,
+ bool eof, bool wait);
private:
size_t d_itemsize;
-
- int d_payload_size; // maximum transmission unit (packet length)
- bool d_wait; // wait if data if not immediately available
- int d_socket; // handle to socket
+ int d_payload_size; // maximum transmission unit (packet length)
+ bool d_eof; // zero-length packet is EOF
+ bool d_wait; // wait if data if not immediately available
+ int d_socket; // handle to socket
char *d_temp_buff; // hold buffer between calls
ssize_t d_residual; // hold information about number of bytes stored in the temp buffer
size_t d_temp_offset; // point to temp buffer location offset
* \brief UDP Source Constructor
*
* \param itemsize The size (in bytes) of the item datatype
- * \param src The source address as either the host name or the 'numbers-and-dots'
- * IP address
- * \param port_src The port number on which the socket listens for data
- * \param payload_size UDP payload size by default set to
- * 1472 = (1500 MTU - (8 byte UDP header) - (20 byte IP header))
- * \param wait Wait for data if not immediately available (default: true)
+ * \param host The name or IP address of the receiving host; can be
+ * NULL, None, or "0.0.0.0" to allow reading from any
+ * interface on the host
+ * \param port The port number on which to receive data; use 0 to
+ * have the system assign an unused port number
+ * \param payload_size UDP payload size by default set to 1472 =
+ * (1500 MTU - (8 byte UDP header) - (20 byte IP header))
+ * \param eof Interpret zero-length packet as EOF (default: true)
+ * \param wait Wait for data if not immediately available
+ * (default: true)
*/
- gr_udp_source(size_t itemsize, const char *src, unsigned short port_src,
- int payload_size, bool wait);
+ gr_udp_source(size_t itemsize, const char *host, unsigned short port,
+ int payload_size, bool eof, bool wait);
public:
~gr_udp_source();
/*! \brief return the PAYLOAD_SIZE of the socket */
int payload_size() { return d_payload_size; }
+ /*! \breif return the port number of the socket */
+ int get_port();
+
// should we export anything else?
int work(int noutput_items,