/* -*- c++ -*- */
/*
- * Copyright 2007,2008,2009 Free Software Foundation, Inc.
+ * Copyright 2007,2008,2009,2010 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
#include <gr_udp_sink.h>
#include <gr_io_signature.h>
#include <stdexcept>
-#if defined(HAVE_SOCKET)
-#include <netdb.h>
+#include <errno.h>
#include <stdio.h>
+#include <string.h>
+#if defined(HAVE_NETDB_H)
typedef void* optval_t;
-#else
+#elif defined(HAVE_WINDOWS_H)
+// if not posix, assume winsock
+#define USING_WINSOCK
+#include <winsock2.h>
+#include <ws2tcpip.h>
#define SHUT_RDWR 2
-#define inet_aton(N,A) ( (A)->s_addr = inet_addr(N), ( (A)->s_addr != INADDR_NONE ) )
typedef char* optval_t;
#endif
#define SNK_VERBOSE 0
+static int is_error( int perr )
+{
+ // Compare error to posix error code; return nonzero if match.
+#if defined(USING_WINSOCK)
+#define ENOPROTOOPT 109
+#define ECONNREFUSED 111
+ // All codes to be checked for must be defined below
+ int werr = WSAGetLastError();
+ switch( werr ) {
+ case WSAETIMEDOUT:
+ return( perr == EAGAIN );
+ case WSAENOPROTOOPT:
+ return( perr == ENOPROTOOPT );
+ case WSAECONNREFUSED:
+ return( perr == ECONNREFUSED );
+ default:
+ fprintf(stderr,"gr_udp_source/is_error: unknown error %d\n", perr );
+ throw std::runtime_error("internal error");
+ }
+ return 0;
+#else
+ return( perr == errno );
+#endif
+}
+
+static void report_error( const char *msg1, const char *msg2 )
+{
+ // Deal with errors, both posix and winsock
+#if defined(USING_WINSOCK)
+ int werr = WSAGetLastError();
+ fprintf(stderr, "%s: winsock error %d\n", msg1, werr );
+#else
+ perror(msg1);
+#endif
+ if( msg2 != NULL )
+ throw std::runtime_error(msg2);
+ return;
+}
+
gr_udp_sink::gr_udp_sink (size_t itemsize,
const char *src, unsigned short port_src,
const char *dst, unsigned short port_dst,
: gr_sync_block ("udp_sink",
gr_make_io_signature (1, 1, itemsize),
gr_make_io_signature (0, 0, 0)),
- d_itemsize (itemsize), d_updated(false), d_payload_size(payload_size)
+ d_itemsize (itemsize), d_payload_size(payload_size)
{
int ret = 0;
+ struct addrinfo *ip_src; // store the source ip info
+ struct addrinfo *ip_dst; // store the destination ip info
+
+#if defined(USING_WINSOCK) // for Windows (with MinGW)
+ // initialize winsock DLL
+ WSADATA wsaData;
+ int iResult = WSAStartup( MAKEWORD(2,2), &wsaData );
+ if( iResult != NO_ERROR ) {
+ report_error( "gr_udp_source WSAStartup", "can't open socket" );
+ }
+#endif
// Set up the address stucture for the source address and port numbers
// Get the source IP address from the host name
- struct hostent *hsrc = gethostbyname(src);
- if(hsrc) { // if the source was provided as a host namex
- d_ip_src = *(struct in_addr*)hsrc->h_addr_list[0];
- }
- else { // assume it was specified as an IP address
- if((ret=inet_aton(src, &d_ip_src)) == 0) { // format IP address
- perror("Not a valid source IP address or host name");
- throw std::runtime_error("can't initialize source socket");
- }
- }
+ struct addrinfo hints;
+ memset( (void*)&hints, 0, sizeof(hints) );
+ hints.ai_family = AF_INET;
+ hints.ai_socktype = SOCK_DGRAM;
+ hints.ai_protocol = IPPROTO_UDP;
+ char port_str[7];
+ sprintf( port_str, "%d", port_src );
+ ret = getaddrinfo( src, port_str, &hints, &ip_src );
+ if( ret != 0 )
+ report_error("gr_udp_source/getaddrinfo",
+ "can't initialize source socket" );
// Get the destination IP address from the host name
- struct hostent *hdst = gethostbyname(dst);
- if(hdst) { // if the source was provided as a host namex
- d_ip_dst = *(struct in_addr*)hdst->h_addr_list[0];
- }
- else { // assume it was specified as an IP address
- if((ret=inet_aton(dst, &d_ip_dst)) == 0) { // format IP address
- perror("Not a valid destination IP address or host name");
- throw std::runtime_error("can't initialize destination socket");
- }
- }
-
- d_port_src = htons(port_src); // format port number
- d_port_dst = htons(port_dst); // format port number
-
- d_sockaddr_src.sin_family = AF_INET;
- d_sockaddr_src.sin_addr = d_ip_src;
- d_sockaddr_src.sin_port = d_port_src;
-
- d_sockaddr_dst.sin_family = AF_INET;
- d_sockaddr_dst.sin_addr = d_ip_dst;
- d_sockaddr_dst.sin_port = d_port_dst;
-
- open();
-}
-
-// public constructor that returns a shared_ptr
-
-gr_udp_sink_sptr
-gr_make_udp_sink (size_t itemsize,
- const char *src, unsigned short port_src,
- const char *dst, unsigned short port_dst,
- int payload_size)
-{
- return gr_udp_sink_sptr (new gr_udp_sink (itemsize,
- src, port_src,
- dst, port_dst,
- payload_size));
-}
-
-gr_udp_sink::~gr_udp_sink ()
-{
- close();
-}
-
-bool
-gr_udp_sink::open()
-{
- gruel::scoped_lock guard(d_mutex); // hold mutex for duration of this function
+ sprintf( port_str, "%d", port_dst );
+ ret = getaddrinfo( dst, port_str, &hints, &ip_dst );
+ if( ret != 0 )
+ report_error("gr_udp_source/getaddrinfo",
+ "can't initialize destination socket" );
// create socket
- if((d_socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1) {
- perror("socket open");
- throw std::runtime_error("can't open socket");
+ d_socket = socket(ip_src->ai_family, ip_src->ai_socktype,
+ ip_src->ai_protocol);
+ if(d_socket == -1) {
+ report_error("socket open","can't open socket");
}
// Turn on reuse address
int opt_val = true;
if(setsockopt(d_socket, SOL_SOCKET, SO_REUSEADDR, (optval_t)&opt_val, sizeof(int)) == -1) {
- perror("SO_REUSEADDR");
- throw std::runtime_error("can't set socket option SO_REUSEADDR");
+ report_error("SO_REUSEADDR","can't set socket option SO_REUSEADDR");
}
// Don't wait when shutting down
lngr.l_onoff = 1;
lngr.l_linger = 0;
if(setsockopt(d_socket, SOL_SOCKET, SO_LINGER, (optval_t)&lngr, sizeof(linger)) == -1) {
- perror("SO_LINGER");
- throw std::runtime_error("can't set socket option SO_LINGER");
+ if( !is_error(ENOPROTOOPT) ) { // no SO_LINGER for SOCK_DGRAM on Windows
+ report_error("SO_LINGER","can't set socket option SO_LINGER");
+ }
}
// bind socket to an address and port number to listen on
- if(bind (d_socket, (sockaddr*)&d_sockaddr_src, sizeof(struct sockaddr)) == -1) {
- perror("socket bind");
- throw std::runtime_error("can't bind socket");
+ if(bind (d_socket, ip_src->ai_addr, ip_src->ai_addrlen) == -1) {
+ report_error("socket bind","can't bind socket");
}
// Not sure if we should throw here or allow retries
- if(connect(d_socket, (sockaddr*)&d_sockaddr_dst, sizeof(struct sockaddr)) == -1) {
- perror("socket connect");
- throw std::runtime_error("can't connect to socket");
+ if(connect(d_socket, ip_dst->ai_addr, ip_dst->ai_addrlen) == -1) {
+ report_error("socket connect","can't connect to socket");
}
- d_updated = true;
- return d_socket != 0;
+ freeaddrinfo(ip_src);
+ freeaddrinfo(ip_dst);
}
-void
-gr_udp_sink::close()
+// public constructor that returns a shared_ptr
+
+gr_udp_sink_sptr
+gr_make_udp_sink (size_t itemsize,
+ const char *src, unsigned short port_src,
+ const char *dst, unsigned short port_dst,
+ int payload_size)
{
- gruel::scoped_lock guard(d_mutex); // hold mutex for duration of this function
+ return gr_udp_sink_sptr (new gr_udp_sink (itemsize,
+ src, port_src,
+ dst, port_dst,
+ payload_size));
+}
+gr_udp_sink::~gr_udp_sink ()
+{
if (d_socket){
shutdown(d_socket, SHUT_RDWR);
+#if defined(USING_WINSOCK)
+ closesocket(d_socket);
+#else
+ ::close(d_socket);
+#endif
d_socket = 0;
}
- d_updated = true;
+
+#if defined(USING_WINSOCK) // for Windows (with MinGW)
+ // free winsock resources
+ WSACleanup();
+#endif
}
int
ssize_t total_size = noutput_items*d_itemsize;
#if SNK_VERBOSE
- printf("Entered upd_sink\n");
+ printf("Entered udp_sink\n");
#endif
while(bytes_sent < total_size) {
r = send(d_socket, (in+bytes_sent), bytes_to_send, 0);
if(r == -1) { // error on send command
- perror("udp_sink"); // there should be no error case where this function
- return -1; // should not exit immediately
+ if( is_error(ECONNREFUSED) )
+ r = bytes_to_send; // discard data until receiver is started
+ else {
+ report_error("udp_sink",NULL); // there should be no error case where
+ return -1; // this function should not exit immediately
+ }
}
bytes_sent += r;
/* -*- c++ -*- */
/*
- * Copyright 2007,2008,2009 Free Software Foundation, Inc.
+ * Copyright 2007,2008,2009,2010 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
#define INCLUDED_GR_UDP_SINK_H
#include <gr_sync_block.h>
-#include <boost/thread.hpp>
-#if defined(HAVE_SOCKET)
-#include <sys/socket.h>
-#include <arpa/inet.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 <windows.h>
-#endif
-#if defined(HAVE_NETINET_IN_H)
-#include <netinet/in.h>
+#include <ws2tcpip.h>
#endif
#include <gruel/thread.h>
int payload_size);
private:
size_t d_itemsize;
- bool d_updated;
- gruel::mutex d_mutex;
int d_payload_size; // maximum transmission unit (packet length)
int d_socket; // handle to socket
- int d_socket_rcv; // handle to socket retuned in the accept call
- struct in_addr d_ip_src; // store the source ip info
- struct in_addr d_ip_dst; // store the destination ip info
- unsigned short d_port_src; // the port number to open for connections to this service
- unsigned short d_port_dst; // port number of the remove system
- struct sockaddr_in d_sockaddr_src; // store the source sockaddr data (formatted IP address and port number)
- struct sockaddr_in d_sockaddr_dst; // store the destination sockaddr data (formatted IP address and port number)
protected:
/*!
public:
~gr_udp_sink ();
- /*!
- * \brief open a socket specified by the port and ip address info
- *
- * Opens a socket, binds to the address, and makes connectionless association
- * over UDP. If any of these fail, the fuction retuns the error and exits.
- */
- bool open();
-
- /*!
- * \brief Close current socket.
- *
- * Shuts down read/write on the socket
- */
- void close();
-
/*! \brief return the PAYLOAD_SIZE of the socket */
int payload_size() { return d_payload_size; }
/* -*- c++ -*- */
/*
- * Copyright 2007,2008,2009 Free Software Foundation, Inc.
+ * Copyright 2007,2008,2009,2010 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
#include <errno.h>
#include <stdio.h>
#include <string.h>
-#if defined(HAVE_SOCKET)
+#if defined(HAVE_NETDB_H)
#include <netdb.h>
typedef void* optval_t;
-#else
+#elif defined(HAVE_WINDOWS_H)
+// if not posix, assume winsock
+#define USING_WINSOCK
+#include <winsock2.h>
+#include <ws2tcpip.h>
#define SHUT_RDWR 2
-#define inet_aton(N,A) ( (A)->s_addr = inet_addr(N), ( (A)->s_addr != INADDR_NONE ) )
typedef char* optval_t;
#endif
+#define USE_SELECT 1 // non-blocking receive on all platforms
+#define USE_RCV_TIMEO 0 // non-blocking receive on all but Cygwin
#define SRC_VERBOSE 0
+static int is_error( int perr )
+{
+ // Compare error to posix error code; return nonzero if match.
+#if defined(USING_WINSOCK)
+#define ENOPROTOOPT 109
+ // All codes to be checked for must be defined below
+ int werr = WSAGetLastError();
+ switch( werr ) {
+ case WSAETIMEDOUT:
+ return( perr == EAGAIN );
+ case WSAENOPROTOOPT:
+ return( perr == ENOPROTOOPT );
+ default:
+ fprintf(stderr,"gr_udp_source/is_error: unknown error %d\n", perr );
+ throw std::runtime_error("internal error");
+ }
+ return 0;
+#else
+ return( perr == errno );
+#endif
+}
+
+static void report_error( char *msg1, char *msg2 )
+{
+ // Deal with errors, both posix and winsock
+#if defined(USING_WINSOCK)
+ int werr = WSAGetLastError();
+ fprintf(stderr, "%s: winsock error %d\n", msg1, werr );
+#else
+ perror(msg1);
+#endif
+ if( msg2 != NULL )
+ throw std::runtime_error(msg2);
+ return;
+}
+
gr_udp_source::gr_udp_source(size_t itemsize, const char *src,
- unsigned short port_src, int payload_size)
+ unsigned short port_src, int payload_size,
+ bool wait)
: gr_sync_block ("udp_source",
gr_make_io_signature(0, 0, 0),
gr_make_io_signature(1, 1, itemsize)),
- d_itemsize(itemsize), d_updated(false), d_payload_size(payload_size), d_residual(0), d_temp_offset(0)
+ d_itemsize(itemsize), d_payload_size(payload_size), d_wait(wait), d_residual(0), d_temp_offset(0)
{
int ret = 0;
+ struct addrinfo *ip_src; // store the source IP address to use
+
+#if defined(USING_WINSOCK) // for Windows (with MinGW)
+ // initialize winsock DLL
+ WSADATA wsaData;
+ int iResult = WSAStartup( MAKEWORD(2,2), &wsaData );
+ if( iResult != NO_ERROR ) {
+ report_error( "gr_udp_source WSAStartup", "can't open socket" );
+ }
+#endif
// Set up the address stucture for the source address and port numbers
// Get the source IP address from the host name
- struct hostent *hsrc = gethostbyname(src);
- if(hsrc) { // if the source was provided as a host namex
- d_ip_src = *(struct in_addr*)hsrc->h_addr_list[0];
- }
- else { // assume it was specified as an IP address
- if((ret=inet_aton(src, &d_ip_src)) == 0) { // format IP address
- perror("Not a valid source IP address or host name");
- throw std::runtime_error("can't initialize source socket");
- }
- }
-
- d_port_src = htons(port_src); // format port number
-
- d_sockaddr_src.sin_family = AF_INET;
- d_sockaddr_src.sin_addr = d_ip_src;
- d_sockaddr_src.sin_port = d_port_src;
+ struct addrinfo hints;
+ memset( (void*)&hints, 0, sizeof(hints) );
+ hints.ai_family = AF_INET;
+ hints.ai_socktype = SOCK_DGRAM;
+ hints.ai_protocol = IPPROTO_UDP;
+ char port_str[7];
+ sprintf( port_str, "%d", port_src );
+ ret = getaddrinfo( src, port_str, &hints, &ip_src );
+ if( ret != 0 )
+ report_error("gr_udp_source/getaddrinfo",
+ "can't initialize source socket" );
d_temp_buff = new char[d_payload_size]; // allow it to hold up to payload_size bytes
-
- open();
-}
-
-gr_udp_source_sptr
-gr_make_udp_source (size_t itemsize, const char *ipaddr,
- unsigned short port, int payload_size)
-{
- return gr_udp_source_sptr (new gr_udp_source (itemsize, ipaddr,
- port, payload_size));
-}
-gr_udp_source::~gr_udp_source ()
-{
- delete [] d_temp_buff;
- close();
-}
-
-bool
-gr_udp_source::open()
-{
- gruel::scoped_lock guard(d_mutex); // hold mutex for duration of this function
// create socket
- d_socket = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
+ d_socket = socket(ip_src->ai_family, ip_src->ai_socktype,
+ ip_src->ai_protocol);
if(d_socket == -1) {
- perror("socket open");
- throw std::runtime_error("can't open socket");
+ report_error("socket open","can't open socket");
}
// Turn on reuse address
int opt_val = 1;
if(setsockopt(d_socket, SOL_SOCKET, SO_REUSEADDR, (optval_t)&opt_val, sizeof(int)) == -1) {
- perror("SO_REUSEADDR");
- throw std::runtime_error("can't set socket option SO_REUSEADDR");
+ report_error("SO_REUSEADDR","can't set socket option SO_REUSEADDR");
}
// Don't wait when shutting down
lngr.l_onoff = 1;
lngr.l_linger = 0;
if(setsockopt(d_socket, SOL_SOCKET, SO_LINGER, (optval_t)&lngr, sizeof(linger)) == -1) {
- perror("SO_LINGER");
- throw std::runtime_error("can't set socket option SO_LINGER");
+ if( !is_error(ENOPROTOOPT) ) { // no SO_LINGER for SOCK_DGRAM on Windows
+ report_error("SO_LINGER","can't set socket option SO_LINGER");
+ }
}
+#if USE_RCV_TIMEO
// Set a timeout on the receive function to not block indefinitely
// This value can (and probably should) be changed
+ // Ignored on Cygwin
+#if defined(USING_WINSOCK)
+ DWORD timeout = 1000; // milliseconds
+#else
timeval timeout;
timeout.tv_sec = 1;
timeout.tv_usec = 0;
+#endif
if(setsockopt(d_socket, SOL_SOCKET, SO_RCVTIMEO, (optval_t)&timeout, sizeof(timeout)) == -1) {
- perror("SO_RCVTIMEO");
- throw std::runtime_error("can't set socket option SO_RCVTIMEO");
+ report_error("SO_RCVTIMEO","can't set socket option SO_RCVTIMEO");
}
+#endif // USE_RCV_TIMEO
// bind socket to an address and port number to listen on
- if(bind (d_socket, (sockaddr*)&d_sockaddr_src, sizeof(struct sockaddr)) == -1) {
- perror("socket bind");
- throw std::runtime_error("can't bind socket");
+ if(bind (d_socket, ip_src->ai_addr, ip_src->ai_addrlen) == -1) {
+ report_error("socket bind","can't bind socket");
}
-
- d_updated = true;
- return d_socket != 0;
+ freeaddrinfo(ip_src);
+
+}
+
+gr_udp_source_sptr
+gr_make_udp_source (size_t itemsize, const char *ipaddr,
+ unsigned short port, int payload_size, bool wait)
+{
+ return gr_udp_source_sptr (new gr_udp_source (itemsize, ipaddr,
+ port, payload_size, wait));
}
-void
-gr_udp_source::close()
+gr_udp_source::~gr_udp_source ()
{
- gruel::scoped_lock guard(d_mutex); // hold mutex for duration of this function
+ delete [] d_temp_buff;
if (d_socket){
shutdown(d_socket, SHUT_RDWR);
+#if defined(USING_WINSOCK)
+ closesocket(d_socket);
+#else
+ ::close(d_socket);
+#endif
d_socket = 0;
}
- d_updated = true;
+
+#if defined(USING_WINSOCK) // for Windows (with MinGW)
+ // free winsock resources
+ WSACleanup();
+#endif
}
int
d_temp_offset = d_temp_offset+d_residual;
}
+#if USE_SELECT
+ // Use select() to determine when socket is readable
+ fd_set readfds;
+ timeval timeout;
+ timeout.tv_sec = 1;
+ timeout.tv_usec = 0;
+#endif
+
while(1) {
// get the data into our output buffer and record the number of bytes
+
+#if USE_SELECT
+ // RCV_TIMEO doesn't work on all systems (e.g., Cygwin)
+ // use select() instead of, or in addition to RCV_TIMEO
+ FD_ZERO(&readfds);
+ FD_SET(d_socket, &readfds);
+ r = select(FD_SETSIZE, &readfds, NULL, NULL, &timeout);
+ if(r < 0) {
+ report_error("udp_source/select",NULL);
+ return -1;
+ }
+ else if(r == 0 ) { // timed out
+ if( d_wait ) {
+ // Allow boost thread interrupt, then try again
+ boost::this_thread::interruption_point();
+ continue;
+ }
+ else
+ return -1;
+ }
+#endif // USE_SELECT
+
// This is a non-blocking call with a timeout set in the constructor
r = recv(d_socket, d_temp_buff, d_payload_size, 0); // get the entire payload or the what's available
// Check if there was a problem; forget it if the operation just timed out
if(r == -1) {
- if(errno == EAGAIN) { // handle non-blocking call timeout
+ if( is_error(EAGAIN) ) { // handle non-blocking call timeout
#if SRC_VERBOSE
printf("UDP receive timed out\n");
#endif
- // Break here to allow the rest of the flow graph time to run and so ctrl-C breaks
- break;
+ if( d_wait ) {
+ // Allow boost thread interrupt, then try again
+ boost::this_thread::interruption_point();
+ continue;
+ }
+ else
+ return -1;
}
else {
- perror("udp_source");
+ report_error("udp_source/recv",NULL);
return -1;
}
}
/* -*- c++ -*- */
/*
- * Copyright 2007,2008,2009 Free Software Foundation, Inc.
+ * Copyright 2007,2008,2009,2010 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
#define INCLUDED_GR_UDP_SOURCE_H
#include <gr_sync_block.h>
-#if defined(HAVE_SOCKET)
-#include <sys/socket.h>
-#include <arpa/inet.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 <windows.h>
-#endif
-#if defined(HAVE_NETINET_IN_H)
-#include <netinet/in.h>
+#include <ws2tcpip.h>
#endif
#include <gruel/thread.h>
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);
+ unsigned short port_src,
+ int payload_size=1472, bool wait=true);
/*!
* \brief Read stream from an UDP socket.
* \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)
*
*/
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);
+ unsigned short port_src,
+ int payload_size, bool wait);
private:
size_t d_itemsize;
- bool d_updated;
- gruel::mutex d_mutex;
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_socket_rcv; // handle to socket retuned in the accept call
- struct in_addr d_ip_src; // store the source IP address to use
- unsigned short d_port_src; // the port number to open for connections to this service
- struct sockaddr_in d_sockaddr_src; // store the source sockaddr data (formatted IP address and port number)
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
* \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)
*/
- gr_udp_source(size_t itemsize, const char *src, unsigned short port_src, int payload_size);
+ gr_udp_source(size_t itemsize, const char *src, unsigned short port_src,
+ int payload_size, bool wait);
public:
~gr_udp_source();
- /*!
- * \brief open a socket specified by the port and ip address info
- *
- * Opens a socket, binds to the address, and waits for a connection
- * over UDP. If any of these fail, the fuction retuns the error and exits.
- */
- bool open();
-
- /*!
- * \brief Close current socket.
- *
- * Shuts down read/write on the socket
- */
- void close();
-
/*! \brief return the PAYLOAD_SIZE of the socket */
int payload_size() { return d_payload_size; }
gr_udp_source_sptr
gr_make_udp_source (size_t itemsize, const char *src,
- unsigned short port_src, int payload_size=1472);
+ unsigned short port_src, int payload_size=1472,
+ bool wait=true);
class gr_udp_source : public gr_sync_block
{
protected:
gr_udp_source (size_t itemsize, const char *src,
- unsigned short port_src, int payload_size);
+ unsigned short port_src, int payload_size, bool wait);
public:
~gr_udp_source ();
- bool open();
- void close();
int payload_size() { return d_payload_size; }
};
from optparse import OptionParser
class dial_tone_sink(gr.top_block):
- def __init__(self, src, port, pkt_size, sample_rate):
+ def __init__(self, src, port, pkt_size, sample_rate, wait):
gr.top_block.__init__(self, "dial_tone_sink")
- udp = gr.udp_source(gr.sizeof_float, src, port, pkt_size)
+ udp = gr.udp_source(gr.sizeof_float, src, port, pkt_size, wait=wait)
sink = audio.sink(sample_rate)
self.connect(udp, sink)
help="packet size.")
parser.add_option("-r", "--sample-rate", type="int", default=8000,
help="audio signal sample rate [default=%default]")
+ parser.add_option("-n", "--no-wait", action="store_true", default=False,
+ help="don't wait for source")
(options, args) = parser.parse_args()
if len(args) != 0:
parser.print_help()
# Create an instance of a hierarchical block
top_block = dial_tone_sink(options.src_name, options.src_port,
- options.packet_size, options.sample_rate)
+ options.packet_size, options.sample_rate,
+ not options.no_wait)
try:
# Run forever
#include <boost/shared_ptr.hpp>
#include <boost/utility.hpp>
+#include <boost/bind.hpp>
#include <vector>
#include <complex>
#include <usrp2/rx_sample_handler.h>
projects / debian / gnuradio / commitdiff