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netsdr: replace boost asio sockets with native bsd sockets 

until we find out what's exactly interfering with fosphor when using
python based flowgraphs (osmocom_fft). c++ flowgraphs are not affected.
wip-signat
Dimitri Stolnikov 2013-11-01 15:54:14 +01:00
parent b844149628
commit e1b699fda0
2 changed files with 223 additions and 17 deletions
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221
lib/netsdr/netsdr_source_c.cc
View File

@ -27,13 +27,25 @@
#include "config.h"
#endif
#ifndef USE_ASIO
#include <netinet/in.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>
#include <arpa/inet.h>
#include <netdb.h>
#endif
#include <iostream>
#include <boost/assign.hpp>
#include <boost/format.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/algorithm/string.hpp>
#ifdef USE_ASIO
#include <boost/asio/deadline_timer.hpp>
#endif
#include <gnuradio/io_signature.h>
@ -41,7 +53,9 @@
#include "netsdr_source_c.h"
using namespace boost::assign;
#ifdef USE_ASIO
using boost::asio::deadline_timer;
#endif
#define DEFAULT_HOST "127.0.0.1" /* We assume a running moetronix server */
#define DEFAULT_PORT 50000
@ -76,10 +90,15 @@ netsdr_source_c::netsdr_source_c (const std::string &args)
: gr::sync_block ("netsdr_source_c",
gr::io_signature::make (MIN_IN, MAX_IN, sizeof (gr_complex)),
gr::io_signature::make (MIN_OUT, MAX_OUT, sizeof (gr_complex))),
#ifdef USE_ASIO
_io_service(),
_resolver(_io_service),
_t(_io_service),
_u(_io_service),
#else
_tcp(-1),
_udp(-1),
#endif
_running(false),
_sequence(0),
_nchan(1)
@ -133,7 +152,7 @@ netsdr_source_c::netsdr_source_c (const std::string &args)
if ( label.length() )
std::cerr << "Using " + label << " ";
#ifdef USE_ASIO
tcp::resolver::query query(tcp::v4(), host.c_str(), port_str.c_str());
tcp::resolver::iterator iterator = _resolver.resolve(query);
@ -155,6 +174,84 @@ netsdr_source_c::netsdr_source_c (const std::string &args)
_u.set_option(udp::socket::reuse_address(true));
_t.set_option(udp::socket::reuse_address(true));
#else
if ( (_tcp = socket(AF_INET, SOCK_STREAM, 0) ) < 0)
{
throw std::runtime_error("Could not create TCP socket");
}
int sockoptval = 1;
setsockopt(_tcp, SOL_SOCKET, SO_REUSEADDR, &sockoptval, sizeof(int));
sockoptval = 1;
setsockopt(_tcp, IPPROTO_TCP, TCP_NODELAY, &sockoptval, sizeof(int));
/* don't wait when shutting down */
linger lngr;
lngr.l_onoff = 1;
lngr.l_linger = 0;
setsockopt(_tcp, SOL_SOCKET, SO_LINGER, &lngr, sizeof(linger));
struct hostent *hp; /* host information */
struct sockaddr_in host_sa; /* local address */
struct sockaddr_in peer_sa; /* remote address */
/* look up the address of the server given its name */
hp = gethostbyname( host.c_str() );
if (!hp) {
close(_tcp);
throw std::runtime_error(std::string(hstrerror(h_errno)) + " (" + host + ")");
}
/* fill in the hosts's address and data */
memset(&host_sa, 0, sizeof(host_sa));
host_sa.sin_family = AF_INET;
host_sa.sin_addr.s_addr = htonl(INADDR_ANY);
host_sa.sin_port = htons(0);
if ( bind(_tcp, (struct sockaddr *)&host_sa, sizeof(host_sa)) < 0 )
{
close(_tcp);
throw std::runtime_error("Bind of TCP socket failed: " + std::string(strerror(errno)));
}
/* fill in the server's address and data */
memset(&peer_sa, 0, sizeof(peer_sa));
peer_sa.sin_family = AF_INET;
peer_sa.sin_port = htons(port);
/* put the host's address into the server address structure */
memcpy((void *)&peer_sa.sin_addr, hp->h_addr_list[0], hp->h_length);
/* connect to server */
if ( connect(_tcp, (struct sockaddr *)&peer_sa, sizeof(peer_sa)) < 0 )
{
close(_tcp);
throw std::runtime_error(std::string(strerror(errno)) + " (" + host + ":" + port_str + ")");
}
if ( (_udp = socket(AF_INET, SOCK_DGRAM, 0)) < 0 )
{
close(_tcp);
throw std::runtime_error("Could not create UDP socket");
}
sockoptval = 1;
setsockopt(_udp, SOL_SOCKET, SO_REUSEADDR, &sockoptval, sizeof(int));
/* fill in the hosts's address and data */
memset(&host_sa, 0, sizeof(host_sa));
host_sa.sin_family = AF_INET;
host_sa.sin_addr.s_addr = htonl(INADDR_ANY);
host_sa.sin_port = htons(DEFAULT_PORT);
if ( bind(_udp, (struct sockaddr *)&host_sa, sizeof(host_sa)) < 0 )
{
close(_tcp);
close(_udp);
throw std::runtime_error("Bind of UDP socket failed: " + std::string(strerror(errno)));
}
#endif
// request & print device information
std::vector< unsigned char > response;
@ -240,7 +337,10 @@ netsdr_source_c::netsdr_source_c (const std::string &args)
*/
netsdr_source_c::~netsdr_source_c ()
{
#ifndef USE_ASIO
close(_tcp);
close(_udp);
#endif
}
void netsdr_source_c::apply_channel( unsigned char *cmd, size_t chan_pos, size_t chan )
@ -279,6 +379,7 @@ bool netsdr_source_c::transaction( const unsigned char *cmd, size_t size )
bool netsdr_source_c::transaction( const unsigned char *cmd, size_t size,
std::vector< unsigned char > &response )
{
size_t rx_bytes = 0;
unsigned char data[1024*2];
response.clear();
@ -289,9 +390,30 @@ bool netsdr_source_c::transaction( const unsigned char *cmd, size_t size,
printf("\n");
#endif
#ifdef USE_ASIO
_t.write_some( boost::asio::buffer(cmd, size) );
size_t rx_bytes = _t.read_some( boost::asio::buffer(data, sizeof(data)) );
rx_bytes = _t.read_some( boost::asio::buffer(data, sizeof(data)) );
#else
write(_tcp, cmd, size);
int nbytes = read(_tcp, data, 2); /* read header */
if ( nbytes != 2 )
return false;
int length = (data[1] & 0x1f) | data[0];
if ( (length < 2) || (length > (int)sizeof(data)) )
return false;
length -= 2; /* subtract header size */
nbytes = read(_tcp, &data[2], length); /* read payload */
if ( nbytes != length )
return false;
rx_bytes = 2 + length; /* header + payload */
#endif
response.resize( rx_bytes );
memcpy( response.data(), data, rx_bytes );
@ -332,14 +454,23 @@ int netsdr_source_c::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items )
{
udp::endpoint ep;
unsigned char data[1024*2];
if ( ! _running )
return WORK_DONE;
#ifdef USE_ASIO
udp::endpoint ep;
size_t rx_bytes = _u.receive_from( boost::asio::buffer(data, sizeof(data)), ep );
#else
struct sockaddr_in sa_in; /* remote address */
socklen_t addrlen = sizeof(sa_in); /* length of addresses */
ssize_t rx_bytes = recvfrom(_udp, data, sizeof(data), 0, (struct sockaddr *)&sa_in, &addrlen);
if ( rx_bytes <= 0 )
{
std::cerr << "recvfrom returned " << rx_bytes << std::endl;
return WORK_DONE;
}
#endif
#define HEADER_SIZE 2
#define SEQNUM_SIZE 2
@ -365,7 +496,13 @@ int netsdr_source_c::work(int noutput_items,
if ( diff > 1 )
{
std::cerr << "Lost " << diff << " packets from NetSDR at " << ep << std::endl;
std::cerr << "Lost " << diff << " packets from "
#ifdef USE_ASIO
<< ep
#else
<< inet_ntoa(sa_in.sin_addr) << ":" << ntohs(sa_in.sin_port)
#endif
<< std::endl;
}
_sequence = (0xffff == sequence) ? 0 : sequence;
@ -443,6 +580,7 @@ typedef struct
uint16_t port;
} unit_t;
#ifdef USE_ASIO
static void handle_receive( const boost::system::error_code& ec,
std::size_t length,
boost::system::error_code* out_ec,
@ -457,16 +595,17 @@ static void handle_timer( const boost::system::error_code& ec,
{
*out_ec = boost::asio::error::timed_out;
}
#endif
static std::vector < unit_t > discover_netsdr()
{
std::vector < unit_t > units;
#ifdef USE_ASIO
boost::system::error_code ec;
boost::asio::io_service ios;
udp::socket socket(ios);
deadline_timer timer(ios);
unsigned char data[1024*2];
timer.expires_at(boost::posix_time::pos_infin);
@ -482,7 +621,47 @@ static std::vector < unit_t > discover_netsdr()
socket.set_option(udp::socket::reuse_address(true));
socket.set_option(boost::asio::socket_base::broadcast(true));
#else
int sock;
if ( (sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0 )
return units;
int sockoptval = 1;
setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &sockoptval, sizeof(int));
sockoptval = 1;
setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &sockoptval, sizeof(int));
struct sockaddr_in host_sa; /* local address */
struct sockaddr_in peer_sa; /* remote address */
/* fill in the server's address and data */
memset((char*)&peer_sa, 0, sizeof(peer_sa));
peer_sa.sin_family = AF_INET;
peer_sa.sin_addr.s_addr = htonl(INADDR_BROADCAST);
peer_sa.sin_port = htons(DISCOVER_SERVER_PORT);
/* fill in the hosts's address and data */
memset(&host_sa, 0, sizeof(host_sa));
host_sa.sin_family = AF_INET;
host_sa.sin_addr.s_addr = htonl(INADDR_ANY);
host_sa.sin_port = htons(DISCOVER_CLIENT_PORT);
if ( bind(sock, (struct sockaddr *)&host_sa, sizeof(host_sa)) < 0 )
{
close(sock);
return units;
}
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 100000;
if ( setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) < 0 )
{
close(sock);
return units;
}
#endif
discover_common_msg_t tx_msg;
memset( (void *)&tx_msg, 0, sizeof(discover_common_msg_t) );
@ -491,19 +670,24 @@ static std::vector < unit_t > discover_netsdr()
tx_msg.key[0] = KEY0;
tx_msg.key[1] = KEY1;
tx_msg.op = MSG_REQ;
#ifdef USE_ASIO
udp::endpoint ep(boost::asio::ip::address_v4::broadcast(), DISCOVER_SERVER_PORT);
socket.send_to(boost::asio::buffer(&tx_msg, sizeof(tx_msg)), ep);
#else
sendto(sock, &tx_msg, sizeof(tx_msg), 0, (struct sockaddr *)&peer_sa, sizeof(peer_sa));
#endif
while ( true )
{
std::size_t rx_bytes = 0;
unsigned char data[1024*2];
#ifdef USE_ASIO
// Set up the variables that receive the result of the asynchronous
// operation. The error code is set to would_block to signal that the
// operation is incomplete. Asio guarantees that its asynchronous
// operations will never fail with would_block, so any other value in
// ec indicates completion.
ec = boost::asio::error::would_block;
std::size_t rx_bytes = 0;
// Start the asynchronous receive operation. The handle_receive function
// used as a callback will update the ec and rx_bytes variables.
@ -536,6 +720,14 @@ static std::vector < unit_t > discover_netsdr()
{
timer.cancel();
}
#else
socklen_t addrlen = sizeof(peer_sa); /* length of addresses */
int nbytes = recvfrom(sock, data, sizeof(data), 0, (struct sockaddr *)&peer_sa, &addrlen);
if ( nbytes <= 0 )
break;
rx_bytes = nbytes;
#endif
if ( rx_bytes >= sizeof(discover_common_msg_t) )
{
@ -562,8 +754,11 @@ static std::vector < unit_t > discover_netsdr()
}
}
}
#ifdef USE_ASIO
socket.close(ec);
#else
close(sock);
#endif
return units;
}
@ -584,7 +779,7 @@ std::vector<std::string> netsdr_source_c::get_devices( bool fake )
}
if ( devices.empty() && fake )
devices += str(boost::format("netsdr=%s:%d,label='RFSPACE NetSDR'")
devices += str(boost::format("netsdr=%s:%d,label='RFSPACE NetSDR Server'")
% DEFAULT_HOST % DEFAULT_PORT);
return devices;

19
lib/netsdr/netsdr_source_c.h
View File

@ -20,20 +20,27 @@
#ifndef INCLUDED_NETSDR_SOURCE_C_H
#define INCLUDED_NETSDR_SOURCE_C_H
#include <boost/asio.hpp>
//#define USE_ASIO
#ifdef USE_ASIO
#include <boost/asio.hpp>
#endif
#include <gnuradio/thread/thread.h>
#include <gnuradio/block.h>
#include <gnuradio/sync_block.h>
#include "osmosdr/ranges.h"
#include "source_iface.h"
#ifdef USE_ASIO
using boost::asio::ip::tcp;
using boost::asio::ip::udp;
#endif
class netsdr_source_c;
#ifndef SOCKET
#define SOCKET int
#endif
/*
* We use boost::shared_ptr's instead of raw pointers for all access
* to gr_blocks (and many other data structures). The shared_ptr gets
@ -118,11 +125,15 @@ private: /* functions */
std::vector< unsigned char > &response );
private: /* members */
#ifdef USE_ASIO
boost::asio::io_service _io_service;
tcp::resolver _resolver;
tcp::socket _t;
udp::socket _u;
#else
SOCKET _tcp;
SOCKET _udp;
#endif
bool _running;
uint16_t _sequence;